Springboot项目实现用户登录与注册《mybatis-plus方式》＜直观配图通俗易懂＞
一.创建数据库表CREATE TABLE `t_user` (`uid` int NOT NULL AUTO_INCREMENT COMMENT '用户id',`username` varchar(20) NOT NULL COMMENT '用户名',`password` char(32) NOT NULL COMMENT '密码',`salt` char(36) DEFAULT NULL COM
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一.创建数据库表
CREATE TABLE `t_user` (
`uid` int NOT NULL AUTO_INCREMENT COMMENT '用户id',
`username` varchar(20) NOT NULL COMMENT '用户名',
`password` char(32) NOT NULL COMMENT '密码',
`salt` char(36) DEFAULT NULL COMMENT '盐值',
`phone` varchar(20) DEFAULT NULL COMMENT '电话号码',
`email` varchar(30) DEFAULT NULL COMMENT '电子邮箱',
`gender` int DEFAULT NULL COMMENT '性别:0-女，1-男',
`avatar` varchar(50) DEFAULT NULL COMMENT '头像',
`is_delete` int DEFAULT NULL COMMENT '是否删除：0-未删除，1-已删除',
`created_user` varchar(20) DEFAULT NULL COMMENT '日志-创建人',
`created_time` datetime DEFAULT NULL COMMENT '日志-创建时间',
`modified_user` varchar(20) DEFAULT NULL COMMENT '日志-最后修改执行人',
`modified_time` datetime DEFAULT NULL COMMENT '日志-最后修改时间',
PRIMARY KEY (`uid`),
UNIQUE KEY `username` (`username`)
) ENGINE=InnoDB AUTO_INCREMENT=13 DEFAULT CHARSET=utf8mb3;二.添加pox依赖
<!--mybatis-plus依赖 -->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.4.1</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-generator</artifactId>
<version>3.4.1</version>
</dependency>
<!-- lombok依赖 -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<!--代码生成器所需代码依赖 -->
<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity-engine-core</artifactId>
<version>2.2</version>
</dependency>
三.mybatis-plus代码生成器生成基础代码框架，编写代码生成配置类 SggCodeGenertor--点击main方法执行
import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.config.DataSourceConfig;
import com.baomidou.mybatisplus.generator.config.GlobalConfig;
import com.baomidou.mybatisplus.generator.config.PackageConfig;
import com.baomidou.mybatisplus.generator.config.StrategyConfig;
import com.baomidou.mybatisplus.generator.config.rules.DateType;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
public class SggCodeGenerator {
public static void main(String[] args) {
// 1、创建代码生成器
AutoGenerator mpg = new AutoGenerator();
// 2、全局配置
GlobalConfig gc = new GlobalConfig();
String projectPath = System.getProperty("user.dir");
gc.setOutputDir(projectPath + "/src/main/java");
gc.setAuthor("玉面小白龙");
gc.setOpen(false); //生成后是否打开资源管理器
gc.setFileOverride(false); //重新生成时文件是否覆盖
gc.setServiceName("%sService"); //去掉Service接口的首字母I
gc.setIdType(IdType.ID_WORKER_STR); //主键策略
gc.setDateType(DateType.ONLY_DATE);//定义生成的实体类中日期类型
mpg.setGlobalConfig(gc);
// 3、数据源配置
DataSourceConfig dsc = new DataSourceConfig();
dsc.setUrl("jdbc:mysql://localhost:3306/taobao?useUnicode=true&characterEncoding=utf-8&serverTimezone=UTC");
dsc.setDriverName("com.mysql.cj.jdbc.Driver");
dsc.setUsername("root");
dsc.setPassword("root");
dsc.setDbType(DbType.MYSQL);
mpg.setDataSource(dsc);
// 4、包配置
PackageConfig pc = new PackageConfig();
pc.setModuleName(null); //模块名
pc.setParent("com.xxx.admin");//自己的项目路径
pc.setController("controller");
pc.setEntity("entity");
pc.setService("service");
pc.setMapper("mapper");
mpg.setPackageInfo(pc);
// 5、策略配置
StrategyConfig strategy = new StrategyConfig();
strategy.setInclude("t_user",);//对数据库那一张表生成代码
strategy.setNaming(NamingStrategy.underline_to_camel);//数据库表映射到实体的命名策略
strategy.setTablePrefix(pc.getModuleName() + "_"); //生成实体时去掉表前缀
strategy.setColumnNaming(NamingStrategy.underline_to_camel);//数据库表字段映射到实体的命名策略
strategy.setEntityLombokModel(true); // lombok 模型 @Accessors(chain = true) setter链式操作
strategy.setRestControllerStyle(true); //restful api风格控制器
strategy.setControllerMappingHyphenStyle(true); //url中驼峰转连字符
mpg.setStrategy(strategy);
// 6、执行
mpg.execute();
}
}3.1实例代码：xml文件我运动到了resources静态文件mapper文件夹下《本项目用不到xml》
四.application.yml--配置数据库连接：
server:
port: 8888
spring:
datasource:
username: root
password: root
driver-class-name: com.mysql.cj.jdbc.Driver
#连接本地数据库
url: jdbc:mysql://localhost:3306/user?useUnicode=true&characterEncoding=utf-8&serverTimezone=UTC
mybatis-plus:
# mapper.xml 文件扫描
mapper-locations: classpath*:/mapper/*.xml五.编写统一返回数据类
5.1结构展示：
public interface ResultCode {
public static Integer SUCCESS = 20000; //成功
public static Integer ERROR = 20001; //失败
}
import lombok.Data;
import java.util.HashMap;
import java.util.Map;
//统一返回结果的类
@Data
public class R {
private Boolean success;//是否成功
private Integer code;//返回码
private String message;//返回消息
private Map<String, Object> data = new HashMap<String, Object>();//返回数据
//把构造方法私有
private R() {}
//成功静态方法
public static R ok() {
R r = new R();
r.setSuccess(true);
r.setCode(ResultCode.SUCCESS);
r.setMessage("成功");
return r;
}
//失败静态方法
public static R error() {
R r = new R();
r.setSuccess(false);
r.setCode(ResultCode.ERROR);
r.setMessage("失败");
return r;
}
public R success(Boolean success){
this.setSuccess(success);
return this;
}
public R message(String message){
this.setMessage(message);
return this;
}
public R code(Integer code){
this.setCode(code);
return this;
}
public R data(String key, Object value){
this.data.put(key, value);
return this;
}
public R data(Map<String, Object> map){
this.setData(map);
return this;
}
}
六.编写统一返回异常类：
public class ComFoundException extends RuntimeException {
public ComFoundException() {
super();
}
public ComFoundException(String message) {
super(message);
}
public ComFoundException(String message, Throwable cause) {
super(message, cause);
}
public ComFoundException(Throwable cause) {
super(cause);
}
protected ComFoundException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
super(message, cause, enableSuppression, writableStackTrace);
}
}七.编写注册+登录接口
1.TUserController层
@RestController
@RequestMapping("/t-user")
public class TUserController {
@Autowired
private TUserService tUserService;
/**
* 用户注册
* @param
* @return
*/
@PostMapping("reg")
public R reg(@RequestBody TUser tuser){
tUserService.reg(tuser);
return R.ok();
}
/**
* 用户登录
* @param
* @return
*/
@PostMapping("login")
public R login(String username, String password){
TUser login = tUserService.login(username,password);
return R.ok().data("login",login);
}
}2.编写TUserService层方法
public interface TUserService extends IService<TUser> {
/**
* 用户注册
* @param
*/
void reg(TUser tuser);
/**
* 用户登录
* @param username 用户名
* @param password 用户密码
* @return
*/
TUser login(String username,String password);
}
八.TUserServiceIpml实现TUserService里面的方法
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.xxx.admin.common.ex.ComFoundException;
import com.xxx.admin.entity.TUser;
import com.xxx.admin.mapper.TUserMapper;
import com.xxx.admin.service.TUserService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.apache.tomcat.jni.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import java.util.Date;
import java.util.UUID;
@Service
public class TUserServiceImpl extends ServiceImpl<TUserMapper, TUser> implements TUserService {
@Autowired
private TUserMapper tUserMapper;
@Override
public void reg(TUser tuser) {
String username = tuser.getUsername();
String password = tuser.getPassword();
if (username==null || password==null){
throw new ComFoundException("输入的用户名或密码不能为空");
}
QueryWrapper<TUser> queryWrapper = new QueryWrapper<>();
queryWrapper.eq("username",username);
TUser tu = tUserMapper.selectOne(queryWrapper);
if (tu!=null){
throw new ComFoundException("用户名已经被注册");
}
String salt = UUID.randomUUID().toString().toUpperCase();
String md5Password = getMd5(tuser.getPassword(), salt);
tuser.setPassword(md5Password);
tuser.setSalt(salt);
tuser.setIsDelete(0);
tuser.setCreatedUser(username);
tuser.setCreatedTime(new Date());
tuser.setModifiedUser(username);
tuser.setModifiedTime(new Date());
Integer rows = tUserMapper.insert(tuser);
if (rows != 1) {
throw new ComFoundException("添加数据失败");
}
}
//md5加密规则
private String getMd5(String password,String salt){
for (int i = 0; i <3 ; i++) {
password = DigestUtils.md5DigestAsHex((salt + password +salt).getBytes()).toUpperCase();
}
return password;
}
@Override
public TUser login(String username,String password) {
if (username==null || password==null){
throw new ComFoundException("输入账户或密码为空");
}
QueryWrapper<TUser> queryWrapper = new QueryWrapper<>();
queryWrapper.eq("username",username);
queryWrapper.eq("is_delete",0);
TUser t = tUserMapper.selectOne(queryWrapper);
if (t==null){
throw new ComFoundException("找不到用户信息");
}
String salt = t.getSalt();
String md5Password = getMd5(password, salt);
if (!t.getPassword().equals(md5Password)) {
throw new ComFoundException("密码不正确");
}
TUser user = new TUser();
user.setUid(t.getUid());
user.setUsername(t.getUsername());
user.setAvatar(t.getAvatar());
return user;
}
}十.最后的测试就交给你们呐，推荐测试工具《Postman》:
直接到postman官网下载。下载后无需任何配置，安装好就可以直接使用。
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