SpringMVC框架，json

需求：以前点击个人明细的时候，是新开一个窗口进行展示，现在我们要实现的效果是点击明细的时候，直接在当前页面的下方进行明细信息的展示。并且页面不刷新。
这就需要是用ajax来实现异步请求。
首先在userlist.jsp页面中添加一个div,用来存放要展示的明细信息的条目
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<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@include file="/WEB-INF/jsp/common/head.jsp"%>
        <div class="right">
            <div class="location">
                <strong>你现在所在的位置是:</strong>
                <span>用户管理页面</span>
            </div>
            <div class="search">
                <form method="post" action="${pageContext.request.contextPath }/user/userlist.html">
                    <input name="method" value="query" class="input-text" type="hidden">
                     <span>用户名：</span>
                     <input name="queryname" class="input-text"  type="text" value="${queryUserName }">
                      
                     <span>用户角色：</span>
                     <select name="queryUserRole">
                        <c:if test="${roleList != null }">
                           <option value="0">--请选择--</option>
                           <c:forEach var="role" items="${roleList}">
                                <option <c:if test="${role.id == queryUserRole }">selected="selected"</c:if>
                                value="${role.id}">${role.roleName}</option>
                           </c:forEach>
                        </c:if>
                    </select>
                      
                     <input type="hidden" name="pageIndex" value="1"/>
                     <input  value="查 询" type="submit" id="searchbutton">
                     <a href="${pageContext.request.contextPath}/user/useradd.html" >添加用户</a>
                </form>
            </div>
            <!--用户-->
            <table class="providerTable" cellpadding="0" cellspacing="0">
                <tr class="firstTr">
                    <th width="10%">用户编码</th>
                    <th width="20%">用户名称</th>
                    <th width="10%">性别</th>
                    <th width="10%">年龄</th>
                    <th width="10%">电话</th>
                    <th width="10%">用户角色</th>
                    <th width="30%">操作</th>
                </tr>
                   <c:forEach var="user" items="${userList }" varStatus="status">
                    <tr>
                        <td>
                        <span>${user.userCode }</span>
                        </td>
                        <td>
                        <span>${user.userName }</span>
                        </td>
                        <td>
                            <span>
                                <c:if test="${user.gender==1}">男</c:if>
                                <c:if test="${user.gender==2}">女</c:if>
                            </span>
                        </td>
                        <td>
                        <span>${user.age}</span>
                        </td>
                        <td>
                        <span>${user.phone}</span>
                        </td>
                        <td>
                            <span>${user.userRoleName}</span>
                        </td>
                        <td>
                        <span><a class="viewUser" href="javascript:;" userid=${user.id } username=${user.userName }><img src="${pageContext.request.contextPath }/statics/images/read.png" alt="查看" title="查看"/></a></span>
                        <span><a class="modifyUser" href="javascript:;" userid=${user.id } username=${user.userName }><img src="${pageContext.request.contextPath }/statics/images/xiugai.png" alt="修改" title="修改"/></a></span>
                        <span><a class="deleteUser" href="javascript:;" userid=${user.id } username=${user.userName }><img src="${pageContext.request.contextPath }/statics/images/schu.png" alt="删除" title="删除"/></a></span>
                        </td>
                    </tr>
                </c:forEach>
            </table>
            <input type="hidden" id="totalPageCount" value="${totalPageCount}"/>
            <c:import url="rollpage.jsp">
                <c:param name="totalCount" value="${totalCount}"/>
                <c:param name="currentPageNo" value="${currentPageNo}"/>
                <c:param name="totalPageCount" value="${totalPageCount}"/>
            </c:import>
            <!-- 下面用于展示的随机个人详细信息的div -->
             <div class="providerAdd">
                <div>
                    <label>用户编码：</label>
                    <input type="text" id="v_userCode" value="" readonly="readonly">
                </div>
                <div>
                    <label>用户名称：</label>
                    <input type="text" id="v_userName" value="" readonly="readonly">
                </div>
                <div>
                    <label>用户性别：</label>
                    <input type="text" id="v_gender" value="" readonly="readonly">
                </div>
                <div>
                    <label>出生日期：</label>
                    <input type="text" Class="Wdate" id="v_birthday" value=""
                    readonly="readonly" onclick="WdatePicker();">
                </div>
                <div>
                    <label>用户电话：</label>
                    <input type="text" id="v_phone" value="" readonly="readonly">
                </div>
                <div>
                    <label>用户角色：</label>
                    <input type="text" id="v_userRoleName" value="" readonly="readonly">
                </div>
                <div>
                    <label>用户地址：</label>
                    <input type="text" id="v_address" value="" readonly="readonly">
                </div>
            </div>
        </div>
    </section>
 
<!--点击删除按钮后弹出的页面-->
<div class="zhezhao"></div>
<div class="remove" id="removeUse">
    <div class="removerChid">
        <h2>提示</h2>
        <div class="removeMain">
            <p>你确定要删除该用户吗？</p>
            <a href="#" id="yes">确定</a>
            <a href="#" id="no">取消</a>
        </div>
    </div>
</div>
 
<%@include file="/WEB-INF/jsp/common/foot.jsp" %>
<script type="text/javascript" src="${pageContext.request.contextPath }/statics/js/userlist.js"></script>