如何从前台传输userList到后台，并由SpringMVC接收？

在不使用 json 格式的数据的时候仍然需要使用包装类：

package com.qjl.ssm.sysmanage.dto;

import java.io.Serializable;
import java.util.List;

import com.qjl.ssm.sysmanage.entity.User;

/**
 * 包装类：UserDTO
 */
public class UserDTO extends User {
    private List<User> userList;

    public List<User> getUserList() {
        return userList;
    }

    public void setUserList(List<User> userList) {
        this.userList = userList;
    }

}

User 实体类如下：

package com.qjl.ssm.sysmanage.entity;

import java.io.Serializable;
import java.util.Date;

public class User {
    private Integer userId;

    private String userName;

    private String loginName;

    private String password;

    private Integer age;

    private String sex;

    private Integer deptId;

    private Date birthday;

    private Date tvUpdate;

    public Integer getUserId() {
        return userId;
    }

    public void setUserId(Integer userId) {
        this.userId = userId;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName == null ? null : userName.trim();
    }

    public String getLoginName() {
        return loginName;
    }

    public void setLoginName(String loginName) {
        this.loginName = loginName == null ? null : loginName.trim();
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password == null ? null : password.trim();
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex == null ? null : sex.trim();
    }

    public Integer getDeptId() {
        return deptId;
    }

    public void setDeptId(Integer deptId) {
        this.deptId = deptId;
    }

    public Date getBirthday() {
        return birthday;
    }

    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }

    public Date getTvUpdate() {
        return tvUpdate;
    }

    public void setTvUpdate(Date tvUpdate) {
        this.tvUpdate = tvUpdate;
    }
}

前台页面的代码：

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%
String path = request.getContextPath();
%>
<!doctype html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>用户列表</title>
    <meta name="Keywords" content="">
    <meta name="Description" content="">
</head>
<body>
    <h1>批量修改</h1>
    <form action="<%=path%>/sysmgr/user/batchUpdateUser" method="post">
        <table>
            <thead>
                <tr>
                    <th>全选</th>
                    <th>姓名</th>
                    <th>年龄</th>
                    <th>性别</th>
                </tr>
            </thead>
            <tbody>
                <c:if test="${userList != null}">
                    <c:forEach items="${requestScope.userList}" var="user" varStatus="i">
                        <tr>
                            <td><input type="hidden" name="userList[${i.index}].userId" value="${user.userId}" /></td>
                            <td><input type="text" name="userList[${i.index}].userName" value="${user.userName}" /></td>
                            <td><input type="text" name="userList[${i.index}].age" value="${user.age}" /></td>
                            <td><input type="text" name="userList[${i.index}].sex" value="${user.sex}" /></td>
                        </tr>
                    </c:forEach>
                </c:if>
                <c:if test="${userList == null}">
                    <tr>
                        <td colspan="4">没有查询到用户信息</td>
                    </tr>
                </c:if>
            </tbody>
        </table>
        <input type="submit" value="批量修改用户" />
    </form>
</body>
</html>

后台 SpringMVC 的接收的代码：

@RequestMapping("/batchUpdateUser")
public String batchUpdateUser(UserDTO userDTO, Model model) {
    if (userDTO.getUserList() != null && userDTO.getUserList().size() > 0) {
        if (this.userService.updateUserBatch(userDTO.getUserList())) {
            model.addAttribute("editMsg", "批量修改成功");
        } else {
            model.addAttribute("editMsg", "批量修改失败");
        }
    }
    return "forward:/sysmgr/user/getUserList";
}

如何从前台传输userList到后台，并由SpringMVC接收？

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