从零开始—仿牛客网讨论社区项目（一）
从零开始—仿牛客网讨论社区项目（SpringBoot、MyBatis、Redis、Kafka、Elasticsearch）
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主要技术架构：
SpringBoot Spring SpringMVC MyBatis Redis Kakfa Elasticsearch Spring Security Spring Actator
1.配置项目环境
在Spring Boot Initializr中或者Idea中初始化一个SpringBoot项目并导出
使用Idea打开导出的项目
2.MyBatis配置
各个层之间的关系如下
在Maven Repository搜索MySql Maven配置文件，在resources文件包内的pom.xml文件中导入相关的配置文件依赖，并在application.properties文件中配置相关的参数。
# ServerProperties
server.port=8080
server.servlet.context-path=/community
# ThymeleafProperties
spring.thymeleaf.cache=false
# DataSourceProperties
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/community?characterEncoding=utf-8&useSSL=false&serverTimezone=Hongkong
#数据库的名称、密码等
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.type=com.zaxxer.hikari.HikariDataSource
#最大连接数、超时时间等
spring.datasource.hikari.maximum-pool-size=15
spring.datasource.hikari.minimum-idle=5
spring.datasource.hikari.idle-timeout=30000
# MybatisProperties
#mapper扫描路径
mybatis.mapper-locations=classpath:mapper/*.xml
#在communtiy下创建实体类
mybatis.type-aliases-package=com.nowcoder.community.entity
mybatis.configuration.useGeneratedKeys=true
mybatis.configuration.mapUnderscoreToCamelCase=true在community文件下创建config entity文件包，在resources文件下创建mapper文件包
在entity文件下创建User类
public class User {
private int id;
private String username;
private String password;
private String salt;
private String email;
private int type;
private int status;
private String activationCode;
private String headerUrl;
private Date createTime;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getSalt() {
return salt;
}
public void setSalt(String salt) {
this.salt = salt;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public int getType() {
return type;
}
public void setType(int type) {
this.type = type;
}
public int getStatus() {
return status;
}
public void setStatus(int status) {
this.status = status;
}
public String getActivationCode() {
return activationCode;
}
public void setActivationCode(String activationCode) {
this.activationCode = activationCode;
}
public String getHeaderUrl() {
return headerUrl;
}
public void setHeaderUrl(String headerUrl) {
this.headerUrl = headerUrl;
}
public Date getCreateTime() {
return createTime;
}
public void setCreateTime(Date createTime) {
this.createTime = createTime;
}
@Override
public String toString() {
return "User{" +
"id=" + id +
", username='" + username + '\'' +
", password='" + password + '\'' +
", salt='" + salt + '\'' +
", email='" + email + '\'' +
", type=" + type +
", status=" + status +
", activationCode='" + activationCode + '\'' +
", headerUrl='" + headerUrl + '\'' +
", createTime=" + createTime +
'}';
}
}在dao文件下创建UserMapper接口访问数据库
@Mapper
public interface UserMapper {
User selectById(int id);
User selectByName(String username);
User selectByEmail(String email);
int insertUser(User user);
int updateStatus(int id, int status);
int updateHeader(int id, String headerUrl);
int updatePassword(int id, String password);
}使用Mapper注解，并在mapper文件下创建user-mapp.xml，使得方法与Sql语句相关联，Mybatis 的xml配置可以在官网找到相关的配置。
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.nowcoder.community.dao.UserMapper">
<sql id="insertFields">
username, password, salt, email, type, status, activation_code, header_url, create_time
</sql>
<sql id="selectFields">
id, username, password, salt, email, type, status, activation_code, header_url, create_time
</sql>
<select id="selectById" resultType="User">
select <include refid="selectFields"></include>
from user
where id = #{id}
</select>
<select id="selectByName" resultType="User">
select <include refid="selectFields"></include>
from user
where username = #{username}
</select>
<select id="selectByEmail" resultType="User">
select <include refid="selectFields"></include>
from user
where email = #{email}
</select>
<insert id="insertUser" parameterType="User" keyProperty="id">
insert into user (<include refid="insertFields"></include>)
values(#{username}, #{password}, #{salt}, #{email}, #{type}, #{status}, #{activationCode}, #{headerUrl}, #{createTime})
</insert>
<update id="updateStatus">
update user set status = #{status} where id = #{id}
</update>
<update id="updateHeader">
update user set header_url = #{headerUrl} where id = #{id}
</update>
<update id="updatePassword">
update user set password = #{password} where id = #{id}
</update>
</mapper>可以使用@Test注解测试相关方法是否正常使用
3.开发社区首页功能：
3.1 开发社区首页显示前10个帖子
在Entity创建DiscussPost类，用于表示发送的相关数据，并在dao文件中创建DiscussPostMapper接口
public class DiscussPost {
private int id;
private int userId;
private String title;
private String content;
private int type;
private int status;
private Date createTime;
private int commentCount;
private double score;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public int getUserId() {
return userId;
}
public void setUserId(int userId) {
this.userId = userId;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
public int getType() {
return type;
}
public void setType(int type) {
this.type = type;
}
public int getStatus() {
return status;
}
public void setStatus(int status) {
this.status = status;
}
public Date getCreateTime() {
return createTime;
}
public void setCreateTime(Date createTime) {
this.createTime = createTime;
}
public int getCommentCount() {
return commentCount;
}
public void setCommentCount(int commentCount) {
this.commentCount = commentCount;
}
public double getScore() {
return score;
}
public void setScore(double score) {
this.score = score;
}
@Override
public String toString() {
return "DiscussPost{" +
"id=" + id +
", userId=" + userId +
", title='" + title + '\'' +
", content='" + content + '\'' +
", type=" + type +
", status=" + status +
", createTime=" + createTime +
", commentCount=" + commentCount +
", score=" + score +
'}';
}
}@Mapper
public interface DiscussPostMapper {
// 考虑到后期分页功能加入offset 和 limit变量
// @Param注解用于给参数取别名,
// 如果只有一个参数,并且在<if>里使用,则必须加别名.
List<DiscussPost> selectDiscussPosts(int userId, int offset, int limit);
int selectDiscussPostRows(@Param("userId") int userId);
}
在mapper文件下创建相关的xml文件用于数据库操作
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.nowcoder.community.dao.DiscussPostMapper">
<sql id="selectFields">
id, user_id, title, content, type, status, create_time, comment_count, score
</sql>
<select id="selectDiscussPosts" resultType="DiscussPost">
select <include refid="selectFields"></include>
from discuss_post
where status != 2
<if test="userId!=0">
and user_id = #{userId}
</if>
order by type desc, create_time desc
limit #{offset}, #{limit}
</select>
<select id="selectDiscussPostRows" resultType="int">
select count(id)
from discuss_post
where status != 2
<if test="userId!=0">
and user_id = #{userId}
</if>
</select>
</mapper>在service文件下创建DiscussPostService类，用于服务层使用（使用@Service注解）
@Service
public class DiscussPostService {
@Autowired
private DiscussPostMapper discussPostMapper;
public List<DiscussPost> findDiscussPosts(int userId, int offset, int limit) {
return discussPostMapper.selectDiscussPosts(userId, offset, limit);
}
public int findDiscussPostRows(int userId) {
return discussPostMapper.selectDiscussPostRows(userId);
}
}
将静态资源（css image js等文件）放到static文件下，将模板文件（site index.html）放到templates文件下。
接下来开发视图层，新建一个HomeController在controller文件下使用@Controller注解
//Controller访问路径可以省略
@Controller
public class HomeController {
//注入对象
@Autowired
private DiscussPostService discussPostService;
@Autowired
private UserService userService;
//使用GET方法
@RequestMapping(path = "/index", method = RequestMethod.GET)
List<DiscussPost> list = discussPostService.findDiscussPosts(0, page.getOffset(), page.getLimit());
List<Map<String, Object>> discussPosts = new ArrayList<>();
if (list != null) {
for (DiscussPost post : list) {
Map<String, Object> map = new HashMap<>();
map.put("post", post);
User user = userService.findUserById(post.getUserId());
map.put("user", user);
discussPosts.add(map);
}
}
model.addAttribute("discussPosts", discussPosts);
return "/index";
}
}更改Index.html文件，使用Thymeleaf对其中相对路径进行更改，并显示相关的帖子。
<ul class="list-unstyled">
<li class="media pb-3 pt-3 mb-3 border-bottom" th:each="map:${discussPosts}">
<a href="site/profile.html">
<img th:src="${map.user.headerUrl}" class="mr-4 rounded-circle" alt="用户头像" style="width:50px;height:50px;">
</a>
<div class="media-body">
<h6 class="mt-0 mb-3">
<a href="#" th:utext="${map.post.title}">备战春招，面试刷题跟他复习，一个月全搞定！</a>
<span class="badge badge-secondary bg-primary" th:if="${map.post.type==1}">置顶</span>
<span class="badge badge-secondary bg-danger" th:if="${map.post.status==1}">精华</span>
</h6>
<div class="text-muted font-size-12">
<u class="mr-3" th:utext="${map.user.username}">寒江雪</u> 发布于 <b th:text="${#dates.format(map.post.createTime,'yyyy-MM-dd HH:mm:ss')}">2019-04-15 15:32:18</b>
<ul class="d-inline float-right">
<li class="d-inline ml-2">赞 11</li>
<li class="d-inline ml-2">|</li>
<li class="d-inline ml-2">回帖 7</li>
</ul>
</div>
</div>
</li>
</ul>完整的HTML文件如下：
<!doctype html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="icon" href="https://static.nowcoder.com/images/logo_87_87.png"/>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" crossorigin="anonymous">
<link rel="stylesheet" th:href="@{/css/global.css}" />
<title>牛客网-首页</title>
</head>
<body>
<div class="nk-container">
<!-- 头部 -->
<header class="bg-dark sticky-top">
<div class="container">
<!-- 导航 -->
<nav class="navbar navbar-expand-lg navbar-dark">
<!-- logo -->
<a class="navbar-brand" href="#"></a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<!-- 功能 -->
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item ml-3 btn-group-vertical">
<a class="nav-link" href="index.html">首页</a>
</li>
<li class="nav-item ml-3 btn-group-vertical">
<a class="nav-link position-relative" href="site/letter.html">消息<span class="badge badge-danger">12</span></a>
</li>
<li class="nav-item ml-3 btn-group-vertical">
<a class="nav-link" href="site/register.html">注册</a>
</li>
<li class="nav-item ml-3 btn-group-vertical">
<a class="nav-link" href="site/login.html">登录</a>
</li>
<li class="nav-item ml-3 btn-group-vertical dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
<img src="http://images.nowcoder.com/head/1t.png" class="rounded-circle" style="width:30px;"/>
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item text-center" href="site/profile.html">个人主页</a>
<a class="dropdown-item text-center" href="site/setting.html">账号设置</a>
<a class="dropdown-item text-center" href="site/login.html">退出登录</a>
<div class="dropdown-divider"></div>
<span class="dropdown-item text-center text-secondary">nowcoder</span>
</div>
</li>
</ul>
<!-- 搜索 -->
<form class="form-inline my-2 my-lg-0" action="site/search.html">
<input class="form-control mr-sm-2" type="search" aria-label="Search" />
<button class="btn btn-outline-light my-2 my-sm-0" type="submit">搜索</button>
</form>
</div>
</nav>
</div>
</header>
<!-- 内容 -->
<div class="main">
<div class="container">
<div class="position-relative">
<!-- 筛选条件 -->
<ul class="nav nav-tabs mb-3">
<li class="nav-item">
<a class="nav-link active" href="#">最新</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">最热</a>
</li>
</ul>
<button type="button" class="btn btn-primary btn-sm position-absolute rt-0" data-toggle="modal" data-target="#publishModal">我要发布</button>
</div>
<!-- 弹出框 -->
<div class="modal fade" id="publishModal" tabindex="-1" role="dialog" aria-labelledby="publishModalLabel" aria-hidden="true">
<div class="modal-dialog modal-lg" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="publishModalLabel">新帖发布</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">
<form>
<div class="form-group">
<label for="recipient-name" class="col-form-label">标题：</label>
<input type="text" class="form-control" id="recipient-name">
</div>
<div class="form-group">
<label for="message-text" class="col-form-label">正文：</label>
<textarea class="form-control" id="message-text" rows="15"></textarea>
</div>
</form>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">取消</button>
<button type="button" class="btn btn-primary" id="publishBtn">发布</button>
</div>
</div>
</div>
</div>
<!-- 提示框 -->
<div class="modal fade" id="hintModal" tabindex="-1" role="dialog" aria-labelledby="hintModalLabel" aria-hidden="true">
<div class="modal-dialog modal-lg" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="hintModalLabel">提示</h5>
</div>
<div class="modal-body" id="hintBody">
发布完毕!
</div>
</div>
</div>
</div>
<!-- 帖子列表 -->
<ul class="list-unstyled">
<li class="media pb-3 pt-3 mb-3 border-bottom" th:each="map:${discussPosts}">
<a href="site/profile.html">
<img th:src="${map.user.headerUrl}" class="mr-4 rounded-circle" alt="用户头像" style="width:50px;height:50px;">
</a>
<div class="media-body">
<h6 class="mt-0 mb-3">
<a href="#" th:utext="${map.post.title}">备战春招，面试刷题跟他复习，一个月全搞定！</a>
<span class="badge badge-secondary bg-primary" th:if="${map.post.type==1}">置顶</span>
<span class="badge badge-secondary bg-danger" th:if="${map.post.status==1}">精华</span>
</h6>
<div class="text-muted font-size-12">
<u class="mr-3" th:utext="${map.user.username}">寒江雪</u> 发布于 <b th:text="${#dates.format(map.post.createTime,'yyyy-MM-dd HH:mm:ss')}">2019-04-15 15:32:18</b>
<ul class="d-inline float-right">
<li class="d-inline ml-2">赞 11</li>
<li class="d-inline ml-2">|</li>
<li class="d-inline ml-2">回帖 7</li>
</ul>
</div>
</div>
</li>
</ul>
<!-- 分页 -->
<nav class="mt-5" th:if="${page.rows>0}">
<ul class="pagination justify-content-center">
<li class="page-item">
<a class="page-link" th:href="@{${page.path}(current=1)}">首页</a>
</li>
<li th:class="|page-item ${page.current==1?'disabled':''}|">
<a class="page-link" th:href="@{${page.path}(current=${page.current-1})}">上一页</a></li>
<li th:class="|page-item ${i==page.current?'active':''}|" th:each="i:${#numbers.sequence(page.from,page.to)}">
<a class="page-link" href="#" th:text="${i}">1</a>
</li>
<li th:class="|page-item ${page.current==page.total?'disabled':''}|">
<a class="page-link" th:href="@{${page.path}(current=${page.current+1})}">下一页</a>
</li>
<li class="page-item">
<a class="page-link" th:href="@{${page.path}(current=${page.total})}">末页</a>
</li>
</ul>
</nav>
</div>
</div>
<!-- 尾部 -->
<footer class="bg-dark">
<div class="container">
<div class="row">
<!-- 二维码 -->
<div class="col-4 qrcode">
<img src="https://uploadfiles.nowcoder.com/app/app_download.png" class="img-thumbnail" style="width:136px;" />
</div>
<!-- 公司信息 -->
<div class="col-8 detail-info">
<div class="row">
<div class="col">
<ul class="nav">
<li class="nav-item">
<a class="nav-link text-light" href="#">关于我们</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">加入我们</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">意见反馈</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">企业服务</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">联系我们</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">免责声明</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">友情链接</a>
</li>
</ul>
</div>
</div>
<div class="row">
<div class="col">
<ul class="nav btn-group-vertical company-info">
<li class="nav-item text-white-50">
公司地址：北京市朝阳区大屯路东金泉时代3-2708北京牛客科技有限公司
</li>
<li class="nav-item text-white-50">
联系方式：010-60728802(电话) admin@nowcoder.com
</li>
<li class="nav-item text-white-50">
牛客科技©2018 All rights reserved
</li>
<li class="nav-item text-white-50">
京ICP备14055008号-4
<img src="http://static.nowcoder.com/company/images/res/ghs.png" style="width:18px;" />
京公网安备 11010502036488号
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
</footer>
</div>
<script src="https://code.jquery.com/jquery-3.3.1.min.js" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" crossorigin="anonymous"></script>
<script th:src="@{/js/global.js}"></script>
<script th:src="@{js/index.js}"></script>
</body>
</html>
3.2开发分页组件，分页显示所有帖子
在entity文件下创建page类，用于记录分页数据
/**
* 封装分页相关的信息.
*/
public class Page {
// 当前页码
private int current = 1;
// 显示上限
private int limit = 10;
// 数据总数(用于计算总页数)
private int rows;
// 查询路径(用于复用分页链接)
private String path;
public int getCurrent() {
return current;
}
public void setCurrent(int current) {
if (current >= 1) {
this.current = current;
}
}
public int getLimit() {
return limit;
}
public void setLimit(int limit) {
if (limit >= 1 && limit <= 100) {
this.limit = limit;
}
}
public int getRows() {
return rows;
}
public void setRows(int rows) {
if (rows >= 0) {
this.rows = rows;
}
}
public String getPath() {
return path;
}
public void setPath(String path) {
this.path = path;
}
/**
* 获取当前页的起始行
*
* @return
*/
public int getOffset() {
// current * limit - limit
return (current - 1) * limit;
}
/**
* 获取总页数
*
* @return
*/
public int getTotal() {
// rows / limit [+1]
if (rows % limit == 0) {
return rows / limit;
} else {
return rows / limit + 1;
}
}
/**
* 获取起始页码
*
* @return
*/
public int getFrom() {
int from = current - 2;
return from < 1 ? 1 : from;
}
/**
* 获取结束页码
*
* @return
*/
public int getTo() {
int to = current + 2;
int total = getTotal();
return to > total ? total : to;
}
}更改HomeController，加入分页的方法。
//Controller访问路径可以省略
@Controller
public class HomeController {
//注入对象
@Autowired
private DiscussPostService discussPostService;
@Autowired
private UserService userService;
//使用GET方法
@RequestMapping(path = "/index", method = RequestMethod.GET)
public String getIndexPage(Model model, Page page) {
// 方法调用钱,SpringMVC会自动实例化Model和Page,并将Page注入Model.
// 所以,在thymeleaf中可以直接访问Page对象中的数据.
page.setRows(discussPostService.findDiscussPostRows(0));
page.setPath("/index");
List<DiscussPost> list = discussPostService.findDiscussPosts(0, page.getOffset(), page.getLimit());
List<Map<String, Object>> discussPosts = new ArrayList<>();
if (list != null) {
for (DiscussPost post : list) {
Map<String, Object> map = new HashMap<>();
map.put("post", post);
User user = userService.findUserById(post.getUserId());
map.put("user", user);
discussPosts.add(map);
}
}
model.addAttribute("discussPosts", discussPosts);
return "/index";
}
}在更改Index.html问件中分页的方法
<!-- 分页 -->
<nav class="mt-5" th:if="${page.rows>0}">
<ul class="pagination justify-content-center">
<li class="page-item">
<a class="page-link" th:href="@{${page.path}(current=1)}">首页</a>
</li>
<li th:class="|page-item ${page.current==1?'disabled':''}|">
<a class="page-link" th:href="@{${page.path}(current=${page.current-1})}">上一页</a></li>
<li th:class="|page-item ${i==page.current?'active':''}|" th:each="i:${#numbers.sequence(page.from,page.to)}">
<a class="page-link" href="#" th:text="${i}">1</a>
</li>
<li th:class="|page-item ${page.current==page.total?'disabled':''}|">
<a class="page-link" th:href="@{${page.path}(current=${page.current+1})}">下一页</a>
</li>
<li class="page-item">
<a class="page-link" th:href="@{${page.path}(current=${page.total})}">末页</a>
</li>
</ul>
</nav>
</div>
</div>效果图如下：
4.开发社区登录模块
4.1邮件发送
在Maven Repository搜索Spring Mail配置文件并加入到poml文件中，在application.properties文件中配置Mail的参数。
# ServerProperties
server.port=8080
server.servlet.context-path=/community
# ThymeleafProperties
spring.thymeleaf.cache=false
# DataSourceProperties
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/community?characterEncoding=utf-8&useSSL=false&serverTimezone=Hongkong
spring.datasource.username=root
spring.datasource.password=lihonghe
spring.datasource.type=com.zaxxer.hikari.HikariDataSource
spring.datasource.hikari.maximum-pool-size=15
spring.datasource.hikari.minimum-idle=5
spring.datasource.hikari.idle-timeout=30000
# MybatisProperties
mybatis.mapper-locations=classpath:mapper/*.xml
mybatis.type-aliases-package=com.nowcoder.community.entity
mybatis.configuration.useGeneratedKeys=true
mybatis.configuration.mapUnderscoreToCamelCase=true
# MailProperties
spring.mail.host=smtp.sina.com
spring.mail.port=465
#自己的邮箱
spring.mail.username=nowcoder@sina.com
spring.mail.password=nowcoder123
spring.mail.protocol=smtps
spring.mail.properties.mail.smtp.ssl.enable=true如果发送不了邮件，需要在个人邮箱的网站设置启用授权码，验证手机，并修改properties文件中关于Email的配置
# MailProperties
spring.mail.host=smtp.sina.com
#spring.mail.port=465
spring.mail.username=nowcoder@sina.com
spring.mail.password=3398c6c71399f9fe
#spring.mail.protocol=smtps
#spring.mail.properties.mail.smtp.ssl.enable=true
spring.mail.properties.mail.smtl.auth=true在community文件下创建util工具文件包，并在util包中创建MailClient类使用@Component注解，并创建发送邮件的方法。
@Component
public class MailClient {
private static final Logger logger = LoggerFactory.getLogger(MailClient.class);
@Autowired
private JavaMailSender mailSender;
//从配置文件中获取值
@Value("${spring.mail.username}")
private String from;
public void sendMail(String to, String subject, String content) {
try {
MimeMessage message = mailSender.createMimeMessage();
MimeMessageHelper helper = new MimeMessageHelper(message);
helper.setFrom(from);
helper.setTo(to);
helper.setSubject(subject);
helper.setText(content, true);
mailSender.send(helper.getMimeMessage());
} catch (MessagingException e) {
logger.error("发送邮件失败:" + e.getMessage());
}
}
}4.2注册功能
在Controller层下创建LoginController类，实现登录界面跳转到注册页面，使用@Controller注解。
@Controller
public class LoginController implements CommunityConstant {
@RequestMapping(path = "/register", method = RequestMethod.GET)
public String getRegisterPage() {
return "/site/register";
}
@RequestMapping(path = "/login", method = RequestMethod.GET)
public String getLoginPage() {
return "/site/login";
}
}
使用模板引擎thymeleaf修改注册页面regist.html。
<!doctype html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="icon" href="https://static.nowcoder.com/images/logo_87_87.png"/>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" crossorigin="anonymous">
<link rel="stylesheet" th:href="@{/css/global.css}" />
<link rel="stylesheet" th:href="@{/css/login.css}" />
<title>牛客网-注册</title>
</head>
<body>
<div class="nk-container">
<!-- 头部 -->
<header class="bg-dark sticky-top" th:replace="index::header">
<div class="container">
<!-- 导航 -->
<nav class="navbar navbar-expand-lg navbar-dark">
<!-- logo -->
<a class="navbar-brand" href="#"></a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<!-- 功能 -->
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item ml-3 btn-group-vertical">
<a class="nav-link" href="../index.html">首页</a>
</li>
<li class="nav-item ml-3 btn-group-vertical">
<a class="nav-link position-relative" href="letter.html">消息<span class="badge badge-danger">12</span></a>
</li>
<li class="nav-item ml-3 btn-group-vertical">
<a class="nav-link" href="register.html">注册</a>
</li>
<li class="nav-item ml-3 btn-group-vertical">
<a class="nav-link" href="login.html">登录</a>
</li>
<li class="nav-item ml-3 btn-group-vertical dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
<img src="http://images.nowcoder.com/head/1t.png" class="rounded-circle" style="width:30px;"/>
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item text-center" href="profile.html">个人主页</a>
<a class="dropdown-item text-center" href="setting.html">账号设置</a>
<a class="dropdown-item text-center" href="login.html">退出登录</a>
<div class="dropdown-divider"></div>
<span class="dropdown-item text-center text-secondary">nowcoder</span>
</div>
</li>
</ul>
<!-- 搜索 -->
<form class="form-inline my-2 my-lg-0" action="search.html">
<input class="form-control mr-sm-2" type="search" aria-label="Search" />
<button class="btn btn-outline-light my-2 my-sm-0" type="submit">搜索</button>
</form>
</div>
</nav>
</div>
</header>
<!-- 内容 -->
<div class="main">
<div class="container pl-5 pr-5 pt-3 pb-3 mt-3 mb-3">
<h3 class="text-center text-info border-bottom pb-3">注 册</h3>
<form class="mt-5" method="post" th:action="@{/register}">
<div class="form-group row">
<label for="username" class="col-sm-2 col-form-label text-right">账号:</label>
<div class="col-sm-10">
<input type="text"
th:class="|form-control ${usernameMsg!=null?'is-invalid':''}|"
th:value="${user!=null?user.username:''}"
id="username" name="username" placeholder="请输入您的账号!" required>
<div class="invalid-feedback" th:text="${usernameMsg}">
该账号已存在!
</div>
</div>
</div>
<div class="form-group row mt-4">
<label for="password" class="col-sm-2 col-form-label text-right">密码:</label>
<div class="col-sm-10">
<input type="password"
th:class="|form-control ${passwordMsg!=null?'is-invalid':''}|"
th:value="${user!=null?user.password:''}"
id="password" name="password" placeholder="请输入您的密码!" required>
<div class="invalid-feedback" th:text="${passwordMsg}">
密码长度不能小于8位!
</div>
</div>
</div>
<div class="form-group row mt-4">
<label for="confirm-password" class="col-sm-2 col-form-label text-right">确认密码:</label>
<div class="col-sm-10">
<input type="password" class="form-control"
th:value="${user!=null?user.password:''}"
id="confirm-password" placeholder="请再次输入密码!" required>
<div class="invalid-feedback">
两次输入的密码不一致!
</div>
</div>
</div>
<div class="form-group row">
<label for="email" class="col-sm-2 col-form-label text-right">邮箱:</label>
<div class="col-sm-10">
<input type="email"
th:class="|form-control ${emailMsg!=null?'is-invalid':''}|"
th:value="${user!=null?user.email:''}"
id="email" name="email" placeholder="请输入您的邮箱!" required>
<div class="invalid-feedback" th:text="${emailMsg}">
该邮箱已注册!
</div>
</div>
</div>
<div class="form-group row mt-4">
<div class="col-sm-2"></div>
<div class="col-sm-10 text-center">
<button type="submit" class="btn btn-info text-white form-control">立即注册</button>
</div>
</div>
</form>
</div>
</div>
<!-- 尾部 -->
<footer class="bg-dark">
<div class="container">
<div class="row">
<!-- 二维码 -->
<div class="col-4 qrcode">
<img src="https://uploadfiles.nowcoder.com/app/app_download.png" class="img-thumbnail" style="width:136px;" />
</div>
<!-- 公司信息 -->
<div class="col-8 detail-info">
<div class="row">
<div class="col">
<ul class="nav">
<li class="nav-item">
<a class="nav-link text-light" href="#">关于我们</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">加入我们</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">意见反馈</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">企业服务</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">联系我们</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">免责声明</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">友情链接</a>
</li>
</ul>
</div>
</div>
<div class="row">
<div class="col">
<ul class="nav btn-group-vertical company-info">
<li class="nav-item text-white-50">
公司地址：北京市朝阳区大屯路东金泉时代3-2708北京牛客科技有限公司
</li>
<li class="nav-item text-white-50">
联系方式：010-60728802(电话) admin@nowcoder.com
</li>
<li class="nav-item text-white-50">
牛客科技©2018 All rights reserved
</li>
<li class="nav-item text-white-50">
京ICP备14055008号-4
<img src="http://static.nowcoder.com/company/images/res/ghs.png" style="width:18px;" />
京公网安备 11010502036488号
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
</footer>
</div>
<script src="https://code.jquery.com/jquery-3.3.1.min.js" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" crossorigin="anonymous"></script>
<script th:src="@{/js/global.js}"></script>
<script th:src="@{/js/register.js}"></script>
</body>
</html>
在Maven Repository搜索commons lang配置文件并加入到poml文件中。在properties文件中加入community的路径。
# community
community.path.domain=http://localhost:8080在util中添加CommunityUtil工具类，方便生成密码。
public class CommunityUtil {
// 生成随机字符串
public static String generateUUID() {
return UUID.randomUUID().toString().replaceAll("-", "");
}
// MD5加密
// hello -> abc123def456
// hello + 3e4a8 -> abc123def456abc
public static String md5(String key) {
if (StringUtils.isBlank(key)) {
return null;
}
return DigestUtils.md5DigestAsHex(key.getBytes());
}
}
在Service中更新UserService类，用于注册用户业务，并更新激活页面activation.html。
@Service
public class UserService implements CommunityConstant {
@Autowired
private UserMapper userMapper;
@Autowired
private MailClient mailClient;
@Autowired
private TemplateEngine templateEngine;
@Value("${community.path.domain}")
private String domain;
@Value("${server.servlet.context-path}")
private String contextPath;
@Autowired
private LoginTicketMapper loginTicketMapper;
public User findUserById(int id) {
return userMapper.selectById(id);
}
public Map<String, Object> register(User user) {
Map<String, Object> map = new HashMap<>();
// 空值处理
if (user == null) {
throw new IllegalArgumentException("参数不能为空!");
}
if (StringUtils.isBlank(user.getUsername())) {
map.put("usernameMsg", "账号不能为空!");
return map;
}
if (StringUtils.isBlank(user.getPassword())) {
map.put("passwordMsg", "密码不能为空!");
return map;
}
if (StringUtils.isBlank(user.getEmail())) {
map.put("emailMsg", "邮箱不能为空!");
return map;
}
// 验证账号
User u = userMapper.selectByName(user.getUsername());
if (u != null) {
map.put("usernameMsg", "该账号已存在!");
return map;
}
// 验证邮箱
u = userMapper.selectByEmail(user.getEmail());
if (u != null) {
map.put("emailMsg", "该邮箱已被注册!");
return map;
}
// 注册用户
user.setSalt(CommunityUtil.generateUUID().substring(0, 5));
user.setPassword(CommunityUtil.md5(user.getPassword() + user.getSalt()));
user.setType(0);
user.setStatus(0);
user.setActivationCode(CommunityUtil.generateUUID());
user.setHeaderUrl(String.format("http://images.nowcoder.com/head/%dt.png", new Random().nextInt(1000)));
user.setCreateTime(new Date());
userMapper.insertUser(user);
// 激活邮件
Context context = new Context();
context.setVariable("email", user.getEmail());
// http://localhost:8080/community/activation/101/code
String url = domain + contextPath + "/activation/" + user.getId() + "/" + user.getActivationCode();
context.setVariable("url", url);
String content = templateEngine.process("/mail/activation", context);
mailClient.sendMail(user.getEmail(), "激活账号", content);
return map;
}
public int activation(int userId, String code) {
User user = userMapper.selectById(userId);
if (user.getStatus() == 1) {
return ACTIVATION_REPEAT;
} else if (user.getActivationCode().equals(code)) {
userMapper.updateStatus(userId, 1);
return ACTIVATION_SUCCESS;
} else {
return ACTIVATION_FAILURE;
}
}
public Map<String, Object> login(String username, String password, int expiredSeconds) {
Map<String, Object> map = new HashMap<>();
// 空值处理
if (StringUtils.isBlank(username)) {
map.put("usernameMsg", "账号不能为空!");
return map;
}
if (StringUtils.isBlank(password)) {
map.put("passwordMsg", "密码不能为空!");
return map;
}
// 验证账号
User user = userMapper.selectByName(username);
if (user == null) {
map.put("usernameMsg", "该账号不存在!");
return map;
}
// 验证状态
if (user.getStatus() == 0) {
map.put("usernameMsg", "该账号未激活!");
return map;
}
// 验证密码
password = CommunityUtil.md5(password + user.getSalt());
if (!user.getPassword().equals(password)) {
map.put("passwordMsg", "密码不正确!");
return map;
}
// 生成登录凭证
LoginTicket loginTicket = new LoginTicket();
loginTicket.setUserId(user.getId());
loginTicket.setTicket(CommunityUtil.generateUUID());
loginTicket.setStatus(0);
loginTicket.setExpired(new Date(System.currentTimeMillis() + expiredSeconds * 1000));
loginTicketMapper.insertLoginTicket(loginTicket);
map.put("ticket", loginTicket.getTicket());
return map;
}
}
<!doctype html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="utf-8">
<link rel="icon" href="https://static.nowcoder.com/images/logo_87_87.png"/>
<title>牛客网-激活账号</title>
</head>
<body>
<div>
<p>
<b th:text="${email}">xxx@xxx.com</b>, 您好!
</p>
<p>
您正在注册牛客网, 这是一封激活邮件, 请点击
<a th:href="${url}">此链接</a>,
激活您的牛客账号!
</p>
</div>
</body>
</html>注册之后需要更新LoginController，处理注册完成的请求。
@Controller
public class LoginController implements CommunityConstant {
private static final Logger logger = LoggerFactory.getLogger(LoginController.class);
@Autowired
private UserService userService;
@Autowired
private Producer kaptchaProducer;
@Value("${server.servlet.context-path}")
private String contextPath;
@RequestMapping(path = "/register", method = RequestMethod.GET)
public String getRegisterPage() {
return "/site/register";
}
@RequestMapping(path = "/login", method = RequestMethod.GET)
public String getLoginPage() {
return "/site/login";
}
@RequestMapping(path = "/register", method = RequestMethod.POST)
public String register(Model model, User user) {
Map<String, Object> map = userService.register(user);
if (map == null || map.isEmpty()) {
model.addAttribute("msg", "注册成功,我们已经向您的邮箱发送了一封激活邮件,请尽快激活!");
model.addAttribute("target", "/index");
return "/site/operate-result";
} else {
model.addAttribute("usernameMsg", map.get("usernameMsg"));
model.addAttribute("passwordMsg", map.get("passwordMsg"));
model.addAttribute("emailMsg", map.get("emailMsg"));
return "/site/register";
}
}
}
更新operate-result页面。
<!doctype html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="icon" href="https://static.nowcoder.com/images/logo_87_87.png"/>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" crossorigin="anonymous">
<link rel="stylesheet" th:href="@{/css/global.css}" />
<title>牛客网-操作结果</title>
</head>
<body class="bg-white">
<div class="nk-container">
<!-- 头部 -->
<header class="bg-dark sticky-top" th:replace="index::header">
<div class="container">
<!-- 导航 -->
<nav class="navbar navbar-expand-lg navbar-dark">
<!-- logo -->
<a class="navbar-brand" href="#"></a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<!-- 功能 -->
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item ml-3 btn-group-vertical">
<a class="nav-link" href="../index.html">首页</a>
</li>
<li class="nav-item ml-3 btn-group-vertical">
<a class="nav-link position-relative" href="letter.html">消息<span class="badge badge-danger">12</span></a>
</li>
<li class="nav-item ml-3 btn-group-vertical">
<a class="nav-link" href="register.html">注册</a>
</li>
<li class="nav-item ml-3 btn-group-vertical">
<a class="nav-link" href="login.html">登录</a>
</li>
<li class="nav-item ml-3 btn-group-vertical dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
<img src="http://images.nowcoder.com/head/1t.png" class="rounded-circle" style="width:30px;"/>
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item text-center" href="profile.html">个人主页</a>
<a class="dropdown-item text-center" href="setting.html">账号设置</a>
<a class="dropdown-item text-center" href="login.html">退出登录</a>
<div class="dropdown-divider"></div>
<span class="dropdown-item text-center text-secondary">nowcoder</span>
</div>
</li>
</ul>
<!-- 搜索 -->
<form class="form-inline my-2 my-lg-0" action="search.html">
<input class="form-control mr-sm-2" type="search" aria-label="Search" />
<button class="btn btn-outline-light my-2 my-sm-0" type="submit">搜索</button>
</form>
</div>
</nav>
</div>
</header>
<!-- 内容 -->
<div class="main">
<div class="container mt-5">
<div class="jumbotron">
<p class="lead" th:text="${msg}">您的账号已经激活成功,可以正常使用了!</p>
<hr class="my-4">
<p>
系统会在 <span id="seconds" class="text-danger">8</span> 秒后自动跳转,
您也可以点此 <a id="target" th:href="@{${target}}" class="text-primary">链接</a>, 手动跳转!
</p>
</div>
</div>
</div>
<!-- 尾部 -->
<footer class="bg-dark">
<div class="container">
<div class="row">
<!-- 二维码 -->
<div class="col-4 qrcode">
<img src="https://uploadfiles.nowcoder.com/app/app_download.png" class="img-thumbnail" style="width:136px;" />
</div>
<!-- 公司信息 -->
<div class="col-8 detail-info">
<div class="row">
<div class="col">
<ul class="nav">
<li class="nav-item">
<a class="nav-link text-light" href="#">关于我们</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">加入我们</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">意见反馈</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">企业服务</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">联系我们</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">免责声明</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">友情链接</a>
</li>
</ul>
</div>
</div>
<div class="row">
<div class="col">
<ul class="nav btn-group-vertical company-info">
<li class="nav-item text-white-50">
公司地址：北京市朝阳区大屯路东金泉时代3-2708北京牛客科技有限公司
</li>
<li class="nav-item text-white-50">
联系方式：010-60728802(电话) admin@nowcoder.com
</li>
<li class="nav-item text-white-50">
牛客科技©2018 All rights reserved
</li>
<li class="nav-item text-white-50">
京ICP备14055008号-4
<img src="http://static.nowcoder.com/company/images/res/ghs.png" style="width:18px;" />
京公网安备 11010502036488号
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
</footer>
</div>
<script src="https://code.jquery.com/jquery-3.3.1.min.js" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" crossorigin="anonymous"></script>
<script>
$(function(){
setInterval(function(){
var seconds = $("#seconds").text();
$("#seconds").text(--seconds);
if(seconds == 0) {
location.href = $("#target").attr("href");
}
}, 1000);
});
</script>
</body>
</html>
在utill中创建一个CommunityConstant接口，用于表示注册状态码。
public interface CommunityConstant {
/**
* 激活成功
*/
int ACTIVATION_SUCCESS = 0;
/**
* 重复激活
*/
int ACTIVATION_REPEAT = 1;
/**
* 激活失败
*/
int ACTIVATION_FAILURE = 2;
/**
* 默认状态的登录凭证的超时时间
*/
int DEFAULT_EXPIRED_SECONDS = 3600 * 12;
/**
* 记住状态的登录凭证超时时间
*/
int REMEMBER_EXPIRED_SECONDS = 3600 * 24 * 100;
}
更新LoginController的功能，并更改Index.html文件相对应位置的模板参数。
@Controller
public class LoginController implements CommunityConstant {
private static final Logger logger = LoggerFactory.getLogger(LoginController.class);
@Autowired
private UserService userService;
@Autowired
private Producer kaptchaProducer;
@Value("${server.servlet.context-path}")
private String contextPath;
@RequestMapping(path = "/register", method = RequestMethod.GET)
public String getRegisterPage() {
return "/site/register";
}
@RequestMapping(path = "/login", method = RequestMethod.GET)
public String getLoginPage() {
return "/site/login";
}
@RequestMapping(path = "/register", method = RequestMethod.POST)
public String register(Model model, User user) {
Map<String, Object> map = userService.register(user);
if (map == null || map.isEmpty()) {
model.addAttribute("msg", "注册成功,我们已经向您的邮箱发送了一封激活邮件,请尽快激活!");
model.addAttribute("target", "/index");
return "/site/operate-result";
} else {
model.addAttribute("usernameMsg", map.get("usernameMsg"));
model.addAttribute("passwordMsg", map.get("passwordMsg"));
model.addAttribute("emailMsg", map.get("emailMsg"));
return "/site/register";
}
}
// http://localhost:8080/community/activation/101/code
@RequestMapping(path = "/activation/{userId}/{code}", method = RequestMethod.GET)
public String activation(Model model, @PathVariable("userId") int userId, @PathVariable("code") String code) {
int result = userService.activation(userId, code);
if (result == ACTIVATION_SUCCESS) {
model.addAttribute("msg", "激活成功,您的账号已经可以正常使用了!");
model.addAttribute("target", "/login");
} else if (result == ACTIVATION_REPEAT) {
model.addAttribute("msg", "无效操作,该账号已经激活过了!");
model.addAttribute("target", "/index");
} else {
model.addAttribute("msg", "激活失败,您提供的激活码不正确!");
model.addAttribute("target", "/index");
}
return "/site/operate-result";
}
}
4.3会话管理
使用Cookie保存一些信息，可以使用浏览器插件查看Cookie(F12控制台)
有关Cookie的一个小示例：
// cookie示例
@RequestMapping(path = "/cookie/set", method = RequestMethod.GET)
@ResponseBody
public String setCookie(HttpServletResponse response) {
// 创建cookie
Cookie cookie = new Cookie("code", CommunityUtil.generateUUID());
// 设置cookie生效的范围
cookie.setPath("/community/alpha");
// 设置cookie的生存时间
cookie.setMaxAge(60 * 10);
// 发送cookie
response.addCookie(cookie);
return "set cookie";
}
@RequestMapping(path = "/cookie/get", method = RequestMethod.GET)
@ResponseBody
public String getCookie(@CookieValue("code") String code) {
System.out.println(code);
return "get cookie";
}
// session示例
@RequestMapping(path = "/session/set", method = RequestMethod.GET)
@ResponseBody
public String setSession(HttpSession session) {
session.setAttribute("id", 1);
session.setAttribute("name", "Test");
return "set session";
}
@RequestMapping(path = "/session/get", method = RequestMethod.GET)
@ResponseBody
public String getSession(HttpSession session) {
System.out.println(session.getAttribute("id"));
System.out.println(session.getAttribute("name"));
return "get session";
}cookie和session的区别
后期可以考虑将Session数据传输到redis数据库中，用于保存一些登陆凭证
4.4生成验证码
验证码使用Kaptcha jar包用于随机生成字符和图片。 在Maven Repository搜索Kaptcha配置文件，在resources文件包内的pom.xml文件中导入相关的配置文件依赖。在community目录下创建config文件包并创建KaptchaConfig配置类，使用@Configuration注解。
@Configuration
public class KaptchaConfig {
@Bean
public Producer kaptchaProducer() {
Properties properties = new Properties();
properties.setProperty("kaptcha.image.width", "100");
properties.setProperty("kaptcha.image.height", "40");
properties.setProperty("kaptcha.textproducer.font.size", "32");
properties.setProperty("kaptcha.textproducer.font.color", "0,0,0");
properties.setProperty("kaptcha.textproducer.char.string", "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYAZ");
properties.setProperty("kaptcha.textproducer.char.length", "4");
properties.setProperty("kaptcha.noise.impl", "com.google.code.kaptcha.impl.NoNoise");
DefaultKaptcha kaptcha = new DefaultKaptcha();
Config config = new Config(properties);
kaptcha.setConfig(config);
return kaptcha;
}
}在LoginController文件中完善验证码功能，并完善登陆页面.html文件中验证码的模板，并实现刷新验证码的功能。
@RequestMapping(path = "/kaptcha", method = RequestMethod.GET)
public void getKaptcha(HttpServletResponse response, HttpSession session) {
// 生成验证码
String text = kaptchaProducer.createText();
BufferedImage image = kaptchaProducer.createImage(text);
// 将验证码存入session
session.setAttribute("kaptcha", text);
// 将突图片输出给浏览器
response.setContentType("image/png");
try {
OutputStream os = response.getOutputStream();
ImageIO.write(image, "png", os);
} catch (IOException e) {
logger.error("响应验证码失败:" + e.getMessage());
}
}
@RequestMapping(path = "/login", method = RequestMethod.POST)
public String login(String username, String password, String code, boolean rememberme,
Model model, HttpSession session, HttpServletResponse response) {
// 检查验证码
String kaptcha = (String) session.getAttribute("kaptcha");
if (StringUtils.isBlank(kaptcha) || StringUtils.isBlank(code) || !kaptcha.equalsIgnoreCase(code)) {
model.addAttribute("codeMsg", "验证码不正确!");
return "/site/login";
}刷新验证码方法：
<script>
function refresh_kaptcha() {
var path = CONTEXT_PATH + "/kaptcha?p=" + Math.random();
$("#kaptcha").attr("src", path);
}
</script>4.5登录、退出功能
密码使用MD5加密
数据库中有关于登录凭证的ticket，使用这个ticket作为登陆凭证。涉及到数据库的操作，就要处理LoginTicketMapper。
LoginTicketMapper(这里是mapper的另外一种写法，不用再resource里面创建mapper文件):
@Mapper
public interface LoginTicketMapper {
@Insert({
"insert into login_ticket(user_id,ticket,status,expired) ",
"values(#{userId},#{ticket},#{status},#{expired})"
})
@Options(useGeneratedKeys = true, keyProperty = "id")
int insertLoginTicket(LoginTicket loginTicket);
@Select({
"select id,user_id,ticket,status,expired ",
"from login_ticket where ticket=#{ticket}"
})
LoginTicket selectByTicket(String ticket);
@Update({
"<script>",
"update login_ticket set status=#{status} where ticket=#{ticket} ",
"<if test=\"ticket!=null\"> ",
"and 1=1 ",
"</if>",
"</script>"
})
int updateStatus(String ticket, int status);
}
在UserService中增加登陆的方法，并在login.html中增加相应的修改：
public Map<String, Object> login(String username, String password, int expiredSeconds) {
Map<String, Object> map = new HashMap<>();
// 空值处理
if (StringUtils.isBlank(username)) {
map.put("usernameMsg", "账号不能为空!");
return map;
}
if (StringUtils.isBlank(password)) {
map.put("passwordMsg", "密码不能为空!");
return map;
}
// 验证账号
User user = userMapper.selectByName(username);
if (user == null) {
map.put("usernameMsg", "该账号不存在!");
return map;
}
// 验证状态
if (user.getStatus() == 0) {
map.put("usernameMsg", "该账号未激活!");
return map;
}
// 验证密码
password = CommunityUtil.md5(password + user.getSalt());
if (!user.getPassword().equals(password)) {
map.put("passwordMsg", "密码不正确!");
return map;
}
// 生成登录凭证
LoginTicket loginTicket = new LoginTicket();
loginTicket.setUserId(user.getId());
loginTicket.setTicket(CommunityUtil.generateUUID());
loginTicket.setStatus(0);
loginTicket.setExpired(new Date(System.currentTimeMillis() + expiredSeconds * 1000));
loginTicketMapper.insertLoginTicket(loginTicket);
map.put("ticket", loginTicket.getTicket());
return map;
}增加Controller层中的登录方法：
@RequestMapping(path = "/login", method = RequestMethod.POST)
public String login(String username, String password, String code, boolean rememberme,
Model model, HttpSession session, HttpServletResponse response) {
// 检查验证码
String kaptcha = (String) session.getAttribute("kaptcha");
if (StringUtils.isBlank(kaptcha) || StringUtils.isBlank(code) || !kaptcha.equalsIgnoreCase(code)) {
model.addAttribute("codeMsg", "验证码不正确!");
return "/site/login";
}
// 检查账号,密码
int expiredSeconds = rememberme ? REMEMBER_EXPIRED_SECONDS : DEFAULT_EXPIRED_SECONDS;
Map<String, Object> map = userService.login(username, password, expiredSeconds);
if (map.containsKey("ticket")) {
Cookie cookie = new Cookie("ticket", map.get("ticket").toString());
cookie.setPath(contextPath);
cookie.setMaxAge(expiredSeconds);
response.addCookie(cookie);
return "redirect:/index";
} else {
model.addAttribute("usernameMsg", map.get("usernameMsg"));
model.addAttribute("passwordMsg", map.get("passwordMsg"));
return "/site/login";
}
}
@RequestMapping(path = "/logout", method = RequestMethod.GET)
public String logout(@CookieValue("ticket") String ticket) {
userService.logout(ticket);
return "redirect:/login";
}4.6显示登陆信息
使用拦截器实现
在controller层下创建Interceptor文件包，
拦截器的方法
// 在Controller之前执行
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
logger.debug("preHandle: " + handler.toString());
return true;
}
// 在Controller之后执行
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
logger.debug("postHandle: " + handler.toString());
}
// 在TemplateEngine之后执行
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
logger.debug("afterCompletion: " + handler.toString());
}在cpnfig文件下创建配置类WebMvcConfig，配置拦截器。
@Configuration
public class WebMvcConfig implements WebMvcConfigurer {
//测试拦截器方法
@Autowired
private AlphaInterceptor alphaInterceptor;
@Autowired
private LoginTicketInterceptor loginTicketInterceptor;
@Autowired
private LoginRequiredInterceptor loginRequiredInterceptor;
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(alphaInterceptor)
.excludePathPatterns("/**/*.css", "/**/*.js", "/**/*.png", "/**/*.jpg", "/**/*.jpeg")
.addPathPatterns("/register", "/login");
registry.addInterceptor(loginTicketInterceptor)
.excludePathPatterns("/**/*.css", "/**/*.js", "/**/*.png", "/**/*.jpg", "/**/*.jpeg");
}
}在请求开始之前查询登录用户：
在Interceptor文件下创建LoginTicketInterceptor，实现拦截器的方法。
@Component
public class LoginTicketInterceptor implements HandlerInterceptor {
@Autowired
private UserService userService;
@Autowired
private HostHolder hostHolder;
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
// 从cookie中获取凭证
String ticket = CookieUtil.getValue(request, "ticket");
if (ticket != null) {
// 查询凭证
LoginTicket loginTicket = userService.findLoginTicket(ticket);
// 检查凭证是否有效
if (loginTicket != null && loginTicket.getStatus() == 0 && loginTicket.getExpired().after(new Date())) {
// 根据凭证查询用户
User user = userService.findUserById(loginTicket.getUserId());
// 在本次请求中持有用户
hostHolder.setUser(user);
}
}
return true;
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
User user = hostHolder.getUser();
if (user != null && modelAndView != null) {
modelAndView.addObject("loginUser", user);
}
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
hostHolder.clear();
}
}在Util文件中创建Cookie工具，以及HostHolder工具用于代替session对象。完成过后修改相应的html文件。
public class CookieUtil {
public static String getValue(HttpServletRequest request, String name) {
if (request == null || name == null) {
throw new IllegalArgumentException("参数为空!");
}
Cookie[] cookies = request.getCookies();
if (cookies != null) {
for (Cookie cookie : cookies) {
if (cookie.getName().equals(name)) {
return cookie.getValue();
}
}
}
return null;
}
}/**
* 持有用户信息,用于代替session对象.
*/
@Component
public class HostHolder {
private ThreadLocal<User> users = new ThreadLocal<>();
public void setUser(User user) {
users.set(user);
}
public User getUser() {
return users.get();
}
public void clear() {
users.remove();
}
}
4.7账号设置
用户自己上传头像，请求必须是POST请求，表单：enctype = "multipart/form-data",SpringMVC通过MutipartFile上传文件。
创建Usercontroller
@Controller
@RequestMapping("/user")
public class UserController {
private static final Logger logger = LoggerFactory.getLogger(UserController.class);
@Value("${community.path.upload}")
private String uploadPath;
@Value("${community.path.domain}")
private String domain;
@Value("${server.servlet.context-path}")
private String contextPath;
@Autowired
private UserService userService;
@Autowired
private HostHolder hostHolder;
@LoginRequired
@RequestMapping(path = "/setting", method = RequestMethod.GET)
public String getSettingPage() {
return "/site/setting";
}
@LoginRequired
@RequestMapping(path = "/upload", method = RequestMethod.POST)
public String uploadHeader(MultipartFile headerImage, Model model) {
if (headerImage == null) {
model.addAttribute("error", "您还没有选择图片!");
return "/site/setting";
}
String fileName = headerImage.getOriginalFilename();
String suffix = fileName.substring(fileName.lastIndexOf("."));
if (StringUtils.isBlank(suffix)) {
model.addAttribute("error", "文件的格式不正确!");
return "/site/setting";
}
// 生成随机文件名
fileName = CommunityUtil.generateUUID() + suffix;
// 确定文件存放的路径
File dest = new File(uploadPath + "/" + fileName);
try {
// 存储文件
headerImage.transferTo(dest);
} catch (IOException e) {
logger.error("上传文件失败: " + e.getMessage());
throw new RuntimeException("上传文件失败,服务器发生异常!", e);
}
// 更新当前用户的头像的路径(web访问路径)
// http://localhost:8080/community/user/header/xxx.png
User user = hostHolder.getUser();
String headerUrl = domain + contextPath + "/user/header/" + fileName;
userService.updateHeader(user.getId(), headerUrl);
return "redirect:/index";
}
@RequestMapping(path = "/header/{fileName}", method = RequestMethod.GET)
public void getHeader(@PathVariable("fileName") String fileName, HttpServletResponse response) {
// 服务器存放路径
fileName = uploadPath + "/" + fileName;
// 文件后缀
String suffix = fileName.substring(fileName.lastIndexOf("."));
// 响应图片
response.setContentType("image/" + suffix);
try (
FileInputStream fis = new FileInputStream(fileName);
OutputStream os = response.getOutputStream();
) {
byte[] buffer = new byte[1024];
int b = 0;
while ((b = fis.read(buffer)) != -1) {
os.write(buffer, 0, b);
}
} catch (IOException e) {
logger.error("读取头像失败: " + e.getMessage());
}
}
}
配置setting.html的静态资源路径
<!doctype html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="icon" href="https://static.nowcoder.com/images/logo_87_87.png"/>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" crossorigin="anonymous">
<link rel="stylesheet" th:href="@{/css/global.css}" />
<link rel="stylesheet" th:href="@{/css/login.css}" />
<title>牛客网-账号设置</title>
</head>
<body>
<div class="nk-container">
<!-- 头部 -->
<header class="bg-dark sticky-top" th:replace="index::header">
<div class="container">
<!-- 导航 -->
<nav class="navbar navbar-expand-lg navbar-dark">
<!-- logo -->
<a class="navbar-brand" href="#"></a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<!-- 功能 -->
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item ml-3 btn-group-vertical">
<a class="nav-link" href="../index.html">首页</a>
</li>
<li class="nav-item ml-3 btn-group-vertical">
<a class="nav-link position-relative" href="letter.html">消息<span class="badge badge-danger">12</span></a>
</li>
<li class="nav-item ml-3 btn-group-vertical">
<a class="nav-link" href="register.html">注册</a>
</li>
<li class="nav-item ml-3 btn-group-vertical">
<a class="nav-link" href="login.html">登录</a>
</li>
<li class="nav-item ml-3 btn-group-vertical dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
<img src="http://images.nowcoder.com/head/1t.png" class="rounded-circle" style="width:30px;"/>
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item text-center" href="profile.html">个人主页</a>
<a class="dropdown-item text-center" href="setting.html">账号设置</a>
<a class="dropdown-item text-center" href="login.html">退出登录</a>
<div class="dropdown-divider"></div>
<span class="dropdown-item text-center text-secondary">nowcoder</span>
</div>
</li>
</ul>
<!-- 搜索 -->
<form class="form-inline my-2 my-lg-0" action="search.html">
<input class="form-control mr-sm-2" type="search" aria-label="Search" />
<button class="btn btn-outline-light my-2 my-sm-0" type="submit">搜索</button>
</form>
</div>
</nav>
</div>
</header>
<!-- 内容 -->
<div class="main">
<div class="container p-5 mt-3 mb-3">
<!-- 上传头像 -->
<h6 class="text-left text-info border-bottom pb-2">上传头像</h6>
<form class="mt-5" method="post" enctype="multipart/form-data" th:action="@{/user/upload}">
<div class="form-group row mt-4">
<label for="head-image" class="col-sm-2 col-form-label text-right">选择头像:</label>
<div class="col-sm-10">
<div class="custom-file">
<input type="file" th:class="|custom-file-input ${error!=null?'is-invalid':''}|"
id="head-image" name="headerImage" lang="es" required="">
<label class="custom-file-label" for="head-image" data-browse="文件">选择一张图片</label>
<div class="invalid-feedback" th:text="${error}">
该账号不存在!
</div>
</div>
</div>
</div>
<div class="form-group row mt-4">
<div class="col-sm-2"></div>
<div class="col-sm-10 text-center">
<button type="submit" class="btn btn-info text-white form-control">立即上传</button>
</div>
</div>
</form>
<!-- 修改密码 -->
<h6 class="text-left text-info border-bottom pb-2 mt-5">修改密码</h6>
<form class="mt-5">
<div class="form-group row mt-4">
<label for="old-password" class="col-sm-2 col-form-label text-right">原密码:</label>
<div class="col-sm-10">
<input type="password" class="form-control" id="old-password" placeholder="请输入原始密码!" required>
<div class="invalid-feedback">
密码长度不能小于8位!
</div>
</div>
</div>
<div class="form-group row mt-4">
<label for="new-password" class="col-sm-2 col-form-label text-right">新密码:</label>
<div class="col-sm-10">
<input type="password" class="form-control" id="new-password" placeholder="请输入新的密码!" required>
<div class="invalid-feedback">
密码长度不能小于8位!
</div>
</div>
</div>
<div class="form-group row mt-4">
<label for="confirm-password" class="col-sm-2 col-form-label text-right">确认密码:</label>
<div class="col-sm-10">
<input type="password" class="form-control" id="confirm-password" placeholder="再次输入新密码!" required>
<div class="invalid-feedback">
两次输入的密码不一致!
</div>
</div>
</div>
<div class="form-group row mt-4">
<div class="col-sm-2"></div>
<div class="col-sm-10 text-center">
<button type="submit" class="btn btn-info text-white form-control">立即保存</button>
</div>
</div>
</form>
</div>
</div>
<!-- 尾部 -->
<footer class="bg-dark">
<div class="container">
<div class="row">
<!-- 二维码 -->
<div class="col-4 qrcode">
<img src="https://uploadfiles.nowcoder.com/app/app_download.png" class="img-thumbnail" style="width:136px;" />
</div>
<!-- 公司信息 -->
<div class="col-8 detail-info">
<div class="row">
<div class="col">
<ul class="nav">
<li class="nav-item">
<a class="nav-link text-light" href="#">关于我们</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">加入我们</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">意见反馈</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">企业服务</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">联系我们</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">免责声明</a>
</li>
<li class="nav-item">
<a class="nav-link text-light" href="#">友情链接</a>
</li>
</ul>
</div>
</div>
<div class="row">
<div class="col">
<ul class="nav btn-group-vertical company-info">
<li class="nav-item text-white-50">
公司地址：北京市朝阳区大屯路东金泉时代3-2708北京牛客科技有限公司
</li>
<li class="nav-item text-white-50">
联系方式：010-60728802(电话) admin@nowcoder.com
</li>
<li class="nav-item text-white-50">
牛客科技©2018 All rights reserved
</li>
<li class="nav-item text-white-50">
京ICP备14055008号-4
<img src="http://static.nowcoder.com/company/images/res/ghs.png" style="width:18px;" />
京公网安备 11010502036488号
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
</footer>
</div>
<script src="https://code.jquery.com/jquery-3.3.1.min.js" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bs-custom-file-input/dist/bs-custom-file-input.js" crossorigin="anonymous"></script>
<script th:src="@{/js/global.js}"></script>
<script>
$(function(){
bsCustomFileInput.init();
});
</script>
</body>
</html>
修改配置文件中，上传文件的保存位置。
community.path.upload=d:/work/data/upload4.8检查登陆状态
防止未登录访问某些资源，可以使用拦截器和注解。
使用注解，在community创建annotation文件创建Login注解。
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface LoginRequired {
}给Usercontroller中的方法，加入@LoginRequire注解，并创建拦截器拦截带注解的方法。
创建一个新的拦截器LoginRequireInterceptor。
@Component
public class LoginRequiredInterceptor implements HandlerInterceptor {
@Autowired
private HostHolder hostHolder;
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
//保证拦截的是方法
if (handler instanceof HandlerMethod) {
HandlerMethod handlerMethod = (HandlerMethod) handler;
Method method = handlerMethod.getMethod();
LoginRequired loginRequired = method.getAnnotation(LoginRequired.class);
if (loginRequired != null && hostHolder.getUser() == null) {
response.sendRedirect(request.getContextPath() + "/login");
return false;
}
}
return true;
}
}
项目代码及相关资源：Ming-XMU (Yiming Zhang) · GitHub
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