软件的功能修改-java大作业基于struts 2的学生信息管理系统

在原有的基础上增加了‘修改密码’功能，原先的大作业上没有密码的修改功能，下面是增加的代码：

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<script type="text/javascript">
function submitForm(){
var userId='${currentUser.userId}';
var password='${currentUser.password}';
var oldPassword=$("#oldPassword").val();
var newPassword=$("#newPassword").val();
var newPassword2=$("#newPassword2").val();
if(oldPassword==null || oldPassword==""){
alert("原密码不能为空！");
return false;
}
if(newPassword==null || newPassword==""){
alert("新密码不能为空！");
return false;
}
if(newPassword2==null || newPassword2==""){
alert("确认新密码不能为空！");
return false;
}
if(password!=oldPassword){
alert("原密码错误！");
return false;
}
if(newPassword!=newPassword2){
alert("确认新密码不一致！");
return false;
}

$.post("user!save",{userId:userId,password:newPassword},
function(result){
var result=eval('('+result+')');
if(result.errorMsg){
alert(result.errorMsg);
}else{
alert("密码修改成功，下一次登录生效！");
resetValue();
}
}
);
}

function resetValue(){
$("#oldPassword").val("");
$("#newPassword").val("");
$("#newPassword2").val("");
}
</script>
<div class="data_list">
<div class="data_content">
<table align="center">
<tr>
<td><label>用户名：</label></td>
<td>
<input type="text" id="userName" value="${currentUser.userName }" readonly="readonly" />
</td>
</tr>
<tr>
<td><label>原密码：</label></td>
<td><input type="password" id="oldPassword" /></td>
</tr>
<tr>
<td><label>新密码：</label></td>
<td><input type="password" id="newPassword" /></td>
</tr>
<tr>
<td><label>确认新密码：</label></td>
<td><input type="password" id="newPassword2" /></td>
</tr>
<tr>
<td>
<input type="button" class="btn btn-primary" value="提交" onclick="submitForm()"/>
</td>
<td>
<input type="button" class="btn btn-primary" value="重置" onclick="resetValue()"/>
</td>
</tr>
</table>
</div>
</div>