Ajax与Axios

Ajax、Axios、JSON、小Demo(axios查询用户列表，并用返回的json数据手写html通过innerHTML回显到table中；；；axios添加用户：封装网页数据为js对象作为data发送post请求，后端json转pojo)

阳光明媚UPUP

375人浏览 · 2023-07-07 13:26:50

阳光明媚UPUP · 2023-07-07 13:26:50 发布

Ajax

异步的js和xml，与服务器进行数据交换和异步交互。AJAX+HTML可替代JSP(jsp为得到数据后经过tomcat解析为html回显到网页上)。

快速入门

ajaxServlet

@WebServlet("/ajaxServlet")
public class AjaxServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.getWriter().write("hello ajax~");
    }
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req,resp);
    }
}

webapp中html目录创建一个ajaxDemo.html，加上以下脚本

<script>
    var xhttp;
    if (window.XMLHttpRequest){
        xhttp = new XMLHttpRequest();
    }else{
        xhttp = new ActiveXObject("Microsoft.XMLHTTP");
    }
    xhttp.open("GET","http://localhost:8080/FilterModule/ajaxServlet");
    xhttp.send();
    xhttp.onreadystatechange = function () {
        if (this.readyState==4&& this.status==200){
            alert(this.responseText)
        }
    };
</script>

访问：http://localhost:8080/FilterModule/html/ajaxDemo.html即可

Demo案例：注册判断用户名是否存在

webapp中html目录register.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>register</title>
</head>
<body>
<h1>register</h1>
<form>
    <table>
        <tr>
            <td>用户名：</td>
            <td>
                <input name="name" id="userName" type="text"><br/>
                <span id="name_error" style="display: none">用户名不太受欢迎</span>
            </td>
        </tr>
        <tr>
            <td>密码：</td>
            <td>
                <input name="password" type="password">
            </td>
        </tr>
    </table>
    <input type="submit" value="提交"/>
    <input type="reset" value="重置"/>
</form>
</body>
<script>
    document.getElementById("userName").onblur = function () {
        var name = this.value;
        var xhttp;
        if (window.XMLHttpRequest){
            xhttp = new XMLHttpRequest();
        }else{
            xhttp = new ActiveXObject("Microsoft.XMLHTTP");
        }
        xhttp.open("GET","http://localhost:8080/FilterModule/selectUserServlet?name="+name);
        xhttp.send();
        xhttp.onreadystatechange = function () {
            if (this.readyState==4&& this.status==200){
                if (this.responseText == "true"){
                    document.getElementById("name_error").style.display="";
                }else{
                    document.getElementById("name_error").style.display="none";
                }
            }
        };
    }
</script>
</html>

servlet

@WebServlet("/selectUserServlet")
public class SelectUserServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String name = req.getParameter("name");
        boolean flag = true;//先不连数据库模拟一个状态，表示当前数据库中该用户名存在了
        resp.getWriter().write(""+flag);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req,resp);
    }
}

Ajax的Jquery的写法

从jquery官网下载正式版的jquery如jquery3.7.0.js

将下载的该js文件放入webapp下的js目录下

webapp下jsp目录下创建ajax.jsp文件

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>ajax</title>
</head>
<body>
</body>
<script src="${pageContext.request.contextPath}/js/jquery-3.7.0.js"></script>
<script>
    var userList = new Array();
    userList.push({username:"zhangsan",age:18});
    userList.push({username:"zhangsan2",age:20});
    $.ajax({
        type:"POST",
        url:"${pageContext.request.contextPath}/user/quick5",<!--具体的controller或servlet-->
        data:JSON.stringify(userList),
        contentType:"application/json;charset=utf-8"
    });
</script>
</html>

访问到该jsp即可执行script发送ajax请求到controller或servlet

Axios

对原生ajax封装，官网：Axios 中文文档 | Axios 中文网 | Axios 是一个基于 promise 的网络请求库，可以用于浏览器和 node.js

快速入门

先创建axios-0.18.0.js文件，windows新建记事本，引入以下内容：

/* axios v0.18.0 | (c) 2018 by Matt Zabriskie */
!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.axios=t():e.axios=t()}(this,function(){return function(e){function t(r){if(n[r])return n[r].exports;var o=n[r]={exports:{},id:r,loaded:!1};return e[r].call(o.exports,o,o.exports,t),o.loaded=!0,o.exports}var n={};return t.m=e,t.c=n,t.p="",t(0)}([function(e,t,n){e.exports=n(1)},function(e,t,n){"use strict";function r(e){var t=new s(e),n=i(s.prototype.request,t);return o.extend(n,s.prototype,t),o.extend(n,t),n}var o=n(2),i=n(3),s=n(5),u=n(6),a=r(u);a.Axios=s,a.create=function(e){return r(o.merge(u,e))},a.Cancel=n(23),a.CancelToken=n(24),a.isCancel=n(20),a.all=function(e){return Promise.all(e)},a.spread=n(25),e.exports=a,e.exports.default=a},function(e,t,n){"use strict";function r(e){return"[object Array]"===R.call(e)}function o(e){return"[object ArrayBuffer]"===R.call(e)}function i(e){return"undefined"!=typeof FormData&&e instanceof FormData}function s(e){var t;return t="undefined"!=typeof ArrayBuffer&&ArrayBuffer.isView?ArrayBuffer.isView(e):e&&e.buffer&&e.buffer instanceof ArrayBuffer}function u(e){return"string"==typeof e}function a(e){return"number"==typeof e}function c(e){return"undefined"==typeof e}function f(e){return null!==e&&"object"==typeof e}function p(e){return"[object Date]"===R.call(e)}function d(e){return"[object File]"===R.call(e)}function l(e){return"[object Blob]"===R.call(e)}function h(e){return"[object Function]"===R.call(e)}function m(e){return f(e)&&h(e.pipe)}function y(e){return"undefined"!=typeof URLSearchParams&&e instanceof URLSearchParams}function w(e){return e.replace(/^\s*/,"").replace(/\s*$/,"")}function g(){return("undefined"==typeof navigator||"ReactNative"!==navigator.product)&&("undefined"!=typeof window&&"undefined"!=typeof document)}function v(e,t){if(null!==e&&"undefined"!=typeof e)if("object"!=typeof e&&(e=[e]),r(e))for(var n=0,o=e.length;n<o;n++)t.call(null,e[n],n,e);else for(var i in e)Object.prototype.hasOwnProperty.call(e,i)&&t.call(null,e[i],i,e)}function x(){function e(e,n){"object"==typeof t[n]&&"object"==typeof e?t[n]=x(t[n],e):t[n]=e}for(var t={},n=0,r=arguments.length;n<r;n++)v(arguments[n],e);return t}function b(e,t,n){return v(t,function(t,r){n&&"function"==typeof t?e[r]=E(t,n):e[r]=t}),e}var E=n(3),C=n(4),R=Object.prototype.toString;e.exports={isArray:r,isArrayBuffer:o,isBuffer:C,isFormData:i,isArrayBufferView:s,isString:u,isNumber:a,isObject:f,isUndefined:c,isDate:p,isFile:d,isBlob:l,isFunction:h,isStream:m,isURLSearchParams:y,isStandardBrowserEnv:g,forEach:v,merge:x,extend:b,trim:w}},function(e,t){"use strict";e.exports=function(e,t){return function(){for(var n=new Array(arguments.length),r=0;r<n.length;r++)n[r]=arguments[r];return e.apply(t,n)}}},function(e,t){function n(e){return!!e.constructor&&"function"==typeof e.constructor.isBuffer&&e.constructor.isBuffer(e)}function r(e){return"function"==typeof e.readFloatLE&&"function"==typeof e.slice&&n(e.slice(0,0))}/*!
 * Determine if an object is a Buffer
 *
 * @author   Feross Aboukhadijeh <https://feross.org>
 * @license  MIT
 */
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o=n(23);r.prototype.throwIfRequested=function(){if(this.reason)throw this.reason},r.source=function(){var e,t=new r(function(t){e=t});return{token:t,cancel:e}},e.exports=r},function(e,t){"use strict";e.exports=function(e){return function(t){return e.apply(null,t)}}}])});
//# sourceMappingURL=axios.min.map

保存命名为 axios-0.18.0.js，将其文件复制到webapp下的js目录。

webapp下html的axiosDemo.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>axios</title>
</head>
<body>
<h1>axiosServlet~</h1>
</body>
<!--<script src="/FilterModule/js/axios-0.18.0.js"/>-->
<script src="../js/axios-0.18.0.js"></script>
<script>
    /*axios({
        method:"get",
        url:"http://localhost:8080/FilterModule/axiosServlet?name=zhangsan"
    }).then(function (resp) {
        alert(resp.data);
    })*/
    axios({
        method: "post",
        url: "http://localhost:8080/FilterModule/axiosServlet",
        data:"name=zhangsan"
    }).then(function (resp) {
        alert(resp.data);
    })
</script>
</html>

AxiosServlet

@WebServlet("/axiosServlet")
public class AxiosServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding("UTF-8");
        String name = req.getParameter("name");
        System.out.println(name);
        resp.getWriter().write("hello axios~");
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req,resp);
    }
}

JSON

js对象表示法，js对象和js对象表示法(JSON)区别为JSON的key都要加""双引号。

    //js对象
    var user = {
        name:"zhangsan",
        age:23,
        city:"北京"
    }
    //JSON
    var userJson = {
        "name":"zhangsan",
        "age":23,
        "city":"北京"
    }

Java对象和JSON字符串的转化fastjson

依赖

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.74</version>
        </dependency>

用法

Java对象转JSON：String jsonStr = JSON.toJSONString(obj);

JSON字符串转Java对象：User user = JSON.parseObject(jsonStr,User.class);

Demo:axios加json完成品牌列表数据查询和添加

环境准备

项目结构

pom文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>AxiosModule</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <dependencies>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.0.1</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.12</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.6</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.8</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.74</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.2</version>
                <configuration>
                    <port>8080</port>
                    <path>/AxiosModule</path><!--虚拟目录-->
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

axios-0.18.0.js：复制代码到记事本中保存重命名为axios-0.18.0.js，拷贝到js目录

/* axios v0.18.0 | (c) 2018 by Matt Zabriskie */
!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.axios=t():e.axios=t()}(this,function(){return function(e){function t(r){if(n[r])return n[r].exports;var o=n[r]={exports:{},id:r,loaded:!1};return e[r].call(o.exports,o,o.exports,t),o.loaded=!0,o.exports}var n={};return t.m=e,t.c=n,t.p="",t(0)}([function(e,t,n){e.exports=n(1)},function(e,t,n){"use strict";function r(e){var t=new s(e),n=i(s.prototype.request,t);return o.extend(n,s.prototype,t),o.extend(n,t),n}var o=n(2),i=n(3),s=n(5),u=n(6),a=r(u);a.Axios=s,a.create=function(e){return r(o.merge(u,e))},a.Cancel=n(23),a.CancelToken=n(24),a.isCancel=n(20),a.all=function(e){return Promise.all(e)},a.spread=n(25),e.exports=a,e.exports.default=a},function(e,t,n){"use strict";function r(e){return"[object Array]"===R.call(e)}function o(e){return"[object ArrayBuffer]"===R.call(e)}function i(e){return"undefined"!=typeof FormData&&e instanceof FormData}function s(e){var t;return t="undefined"!=typeof ArrayBuffer&&ArrayBuffer.isView?ArrayBuffer.isView(e):e&&e.buffer&&e.buffer instanceof ArrayBuffer}function u(e){return"string"==typeof e}function a(e){return"number"==typeof e}function c(e){return"undefined"==typeof e}function f(e){return null!==e&&"object"==typeof e}function p(e){return"[object Date]"===R.call(e)}function d(e){return"[object File]"===R.call(e)}function l(e){return"[object Blob]"===R.call(e)}function h(e){return"[object Function]"===R.call(e)}function m(e){return f(e)&&h(e.pipe)}function y(e){return"undefined"!=typeof URLSearchParams&&e instanceof URLSearchParams}function w(e){return e.replace(/^\s*/,"").replace(/\s*$/,"")}function g(){return("undefined"==typeof navigator||"ReactNative"!==navigator.product)&&("undefined"!=typeof window&&"undefined"!=typeof document)}function v(e,t){if(null!==e&&"undefined"!=typeof e)if("object"!=typeof e&&(e=[e]),r(e))for(var n=0,o=e.length;n<o;n++)t.call(null,e[n],n,e);else for(var i in e)Object.prototype.hasOwnProperty.call(e,i)&&t.call(null,e[i],i,e)}function x(){function e(e,n){"object"==typeof t[n]&&"object"==typeof e?t[n]=x(t[n],e):t[n]=e}for(var t={},n=0,r=arguments.length;n<r;n++)v(arguments[n],e);return t}function b(e,t,n){return v(t,function(t,r){n&&"function"==typeof t?e[r]=E(t,n):e[r]=t}),e}var E=n(3),C=n(4),R=Object.prototype.toString;e.exports={isArray:r,isArrayBuffer:o,isBuffer:C,isFormData:i,isArrayBufferView:s,isString:u,isNumber:a,isObject:f,isUndefined:c,isDate:p,isFile:d,isBlob:l,isFunction:h,isStream:m,isURLSearchParams:y,isStandardBrowserEnv:g,forEach:v,merge:x,extend:b,trim:w}},function(e,t){"use strict";e.exports=function(e,t){return function(){for(var n=new Array(arguments.length),r=0;r<n.length;r++)n[r]=arguments[r];return e.apply(t,n)}}},function(e,t){function n(e){return!!e.constructor&&"function"==typeof e.constructor.isBuffer&&e.constructor.isBuffer(e)}function r(e){return"function"==typeof e.readFloatLE&&"function"==typeof e.slice&&n(e.slice(0,0))}/*!
 * Determine if an object is a Buffer
 *
 * @author   Feross Aboukhadijeh <https://feross.org>
 * @license  MIT
 */
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o=n(23);r.prototype.throwIfRequested=function(){if(this.reason)throw this.reason},r.source=function(){var e,t=new r(function(t){e=t});return{token:t,cancel:e}},e.exports=r},function(e,t){"use strict";e.exports=function(e){return function(t){return e.apply(null,t)}}}])});
//# sourceMappingURL=axios.min.map

mybatis核心配置mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <typeAliases>
        <package name="com.kdy.pojo"/>
    </typeAliases>
    <environments default="development">
        <environment id="development"><!--环境development、test，可以配置多个数据库连接的环境信息，将来通过default属性切换-->
            <transactionManager type="JDBC"/><!--事务管理器,spring可接管-->
            <dataSource type="POOLED"><!--数据源-->
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql:///jdbc?useSSL=false"/>
                <!--如果mysqlurl中有&符号需要进行转义为&amp;，如useSSL=false&amp;useServerPrepStmts=true
                127.0.0.1:3306本机默认端口可省略不写，直接为///-->
                <property name="username" value="root"/>
                <property name="password" value="root123"/>
            </dataSource>
        </environment>
    </environments>
    <mappers>
        <package name="com.kdy.mapper"/>
    </mappers>
</configuration>

pojo

@Data//包括get、set、equals、hashCode、canEqual、toString、无参构造，没有有参构造
@NoArgsConstructor
public class User {
    private Integer id;
    private String name;
    private String password;
    private String email;
    private Date birthday;
    private String infoId;
    private String englishTeacher;

    public User(Integer id, String name, String password, String email, Date birthday, String infoId, String englishTeacher) {
        this.id = id;
        this.name = name;
        this.password = password;
        this.email = email;
        this.birthday = birthday;
        this.infoId = infoId;
        this.englishTeacher = englishTeacher;
    }
}

mapper接口

public interface UserMapper {

    @Insert("insert into users(name,password,email,birthday,infoId,english_teacher)" +
            " values(#{name},#{password},#{email},#{birthday},#{infoId},#{englishTeacher});")
    int insert(User user);

    @Select("select * from users")
    @ResultMap("userResultMap")
    List<User> selectAll();
    
}

sql映射UserMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "https://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.kdy.mapper.UserMapper">
    <resultMap id="userResultMap" type="user">
        <result column="english_teacher" property="englishTeacher"/>
        <!--其他需要映射的字段接着上行格式往下写即可-->
    </resultMap>
</mapper>

SqlSessionFactoryUtis

/**
 * 通过静态代码块使得该类再被JVM加载时仅执行唯一一次静态代码块中的内容，生成一个sqlSessionFactory对象保存在该类变量中
 * 后续直接通过public的getSqlSessionFactory方法拿到这个对象即可。避免重复频繁创建sqlSessionFactory对象的问题。
 */
public class SqlSessionFactoryUtils {
    private static SqlSessionFactory sqlSessionFactory;
    static {
        try {
            String resource = "mybatis-config.xml";
            InputStream inputStream = Resources.getResourceAsStream(resource);
            sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    public static SqlSessionFactory getSqlSessionFactory(){
        return sqlSessionFactory;
    }
}

service

public class UserService {

    SqlSessionFactory factory = SqlSessionFactoryUtils.getSqlSessionFactory();

    public List<User> selectAll(){
        SqlSession sqlSession = factory.openSession();
        UserMapper mapper = sqlSession.getMapper(UserMapper.class);
        List<User> userList = mapper.selectAll();
        sqlSession.close();
        return userList;
    }
    public int addUser(User user){
        SqlSession sqlSession = factory.openSession();
        UserMapper mapper = sqlSession.getMapper(UserMapper.class);
        int count = mapper.insert(user);
        if (count>0){
            sqlSession.commit();
        }
        sqlSession.close();
        return count;
    }
}

axios查询用户列表，并用返回的json数据手写html通过innerHTML回显到table中

html/User.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>UserList</title>
</head>
<body>
<table id="userTable" border="1px"></table>
</body>
<!--<script src="/FilterModule/js/axios-0.18.0.js"/>-->
<script src="../js/axios-0.18.0.js"></script>
<script>
    window.onload = function () {
        axios({
            method: "get",
            url: "http://localhost:8080/AxiosModule/selectAllServlet"
        }).then(function (resp) {
            let users  =resp.data;
            let tableData = "<tr>\n"+
                    "<th>序号</th>\n"+
                    "<th>name</th>\n"+
                    "<th>password</th>\n"+
                    "<th>email</th>\n"+
                    "<th>birthday</th>\n"+
                    "<th>infoId</th>\n"+
                    "<th>englishTeacher</th>\n"+
                    "<th>操作</th>\n"+
                    "</tr>";
            for (let i=0;i<users.length;i++){
                let user = users[i];
                tableData +="\n"+
                        "<tr align=\"center\">\n"+
                        "<td>"+(i+1)+"</td>\n"+
                        "<td>"+user.name+"</td>\n"+
                        "<td>"+user.password+"</td>\n"+
                        "<td>"+user.email+"</td>\n"+
                        "<td>"+user.birthday+"</td>\n"+
                        "<td>"+user.infoId+"</td>\n"+
                        "<td>"+user.englishTeacher+"</td>\n"+
                        "<td><a href=\"#\">修改</a>&amp;<a href=\"#\">删除</a></td>\n"+
                        "</tr>";
            }
            document.getElementById("userTable").innerHTML = tableData;
        })
    }
    /*axios({
            method: "post",
            url: "http://localhost:8080/FilterModule/axiosServlet",
            data:"name=zhangsan"
        }).then(function (resp) {
            alert(resp.data);
        })
    }*/
</script>
</html>

@WebServlet("/selectAllServlet")
public class SelectAllServlet extends HttpServlet {

    UserService userService = new UserService();

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        List<User> users = userService.selectAll();
        String jsonString = JSON.toJSONString(users);
        resp.setContentType("text/json;charset=utf-8");
        resp.getWriter().write(jsonString);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req,resp);
    }
}

axios添加用户：封装网页数据为js对象作为data发送post请求，后端json转pojo

html/addUser.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>addUser</title>
</head>
<body>
<h3>添加用户</h3>
<form action="" method="post">
    name：<input id="name" name="name" type="text"><br>
    password：<input id="password" name="password" type="password"><br>
    email：<input id="email" name="email" type="text"><br>
    birthday：<input id="birthday" name="birthday" type="date"><br>
    infoId：<input id="infoId" name="infoId" type="text"><br>
    englishTeacher：<input id="englishTeacher" name="englishTeacher" type="text"><br>
<!--    status：
    <input name="status" type="radio" value="0">禁用
    <input name="status" type="radio" value="1">启用-->
    <input type="submit" id="btn" value="submit">
    <input type="reset" value="reset">
</form>
</body>
<script src="../js/axios-0.18.0.js"></script>
<script>
    /*axios({
        method:"get",
        url:"http://localhost:8080/FilterModule/axiosServlet?name=zhangsan"
    }).then(function (resp) {
        alert(resp.data);
    })*/
    document.getElementById("btn").onclick = function(){
        var formDate ={
            name:"",
            password:"",
            email:"",
            birthday:"",
            infoId:"",
            englishTeacher:""
            /*status,*/
        };
        formDate.name  = document.getElementById("name").value;
        formDate.password = document.getElementById("password").value;
        formDate.email = document.getElementById("email").value;
        formDate.birthday = document.getElementById("birthday").value;
        formDate.infoId = document.getElementById("infoId").value;
        formDate.englishTeacher = document.getElementById("englishTeacher").value;
/*        let status = document.getElementsByName("status");
       for (let  i = 0;i<status.length;i++){
            if (status[i].checked){
                formDate.status = status[i].value;
            }
        }*/
        console.log(formDate);
        axios({
            method: "post",
            url: "http://localhost:8080/AxiosModule/AddServlet",
            data: formDate
        }).then(function (resp) {
            if (resp.data=="success"){
                location.href="http://localhost:8080/AxiosModule/html/User.html";
            }
        })
    }
</script>
</html>

@WebServlet("/AddServlet")
public class AddServlet extends HttpServlet {

    private UserService userService = new UserService();

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //接收数据：request.getParameter("name)，接收不了JSON字符串的数据
        //只能是以哦那个传统的post请求参数获取方式——req.getReader().readLine();
        BufferedReader br = req.getReader();
        String params = br.readLine();
        //JSON转Java对象
        User user = JSON.parseObject(params, User.class);
        int count = userService.addUser(user);
        resp.setContentType("text/json;charset=utf-8");
        resp.getWriter().write("success");
    }
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req,resp);
    }
}