jsp页面里面对一个数据累加
源码在此,需要改的地方红字高亮
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<% int sum= 0; %>
<!DOCTYPE html>
<html>
<head>
<title>收款管理</title>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<script src="scripts/jquery.min.js"></script>
<link rel="stylesheet" href="css/bootstrap.min.css">
<link rel="stylesheet" href="css/layout.css">
<script src="scripts/bootstrap.min.js"></script>
<style>
#content-list {
font-size: 1.8em;
}
#wrapper {
width: 90%;
height: 500px;
margin: 0 auto;
background: #fff;
box-shadow: 1px 1px 3px #444;
border-radius: 6px;
overflow: auto;
}
.collection-list li {
display: inline-block;
width: 100%;
line-height: 4em;
}
.student-id {
float: left;
font-size: 1.5em;
color: #81CFE0;
font-family: "STHeiti Light";
text-shadow: 1px 1px 0px #222;
}
.message-time {
float: right;
margin-right: 35px;
font-size: 1.2em;
}
.message_content {
display: block;
margin-top: 3em;
margin-right: 35px;
font-size: 1.2em;
border-bottom: 1px solid #03C9A9;
}
.del-collection {
float: right;
}
.edit-collection {
float: right;
margin-right: 15px;
}
.add-collection {
float: right;
margin: 20px 60px;
}
.show-value{
float: left;
font-size: 1.2em;
color: #000;
font-family: "STHeiti Light";
}
</style>
</head>
<body>
<div id="container">
<%@ include file="header.jsp"%>
</div>
<div id="left-list">
<jsp:include page="menu.jsp"/>
</div>
<div id="content-list">
<button class="btn btn-primary add-collection" data-toggle="modal" data-target="#addModel">添加收款</button>
<div id="wrapper">
<ul class="collection-list">
<c:forEach items="${uu}" var="node">
<li>
<span class="student-id">
<c:out value="${node.student_id}"></c:out>
<c:out value="${node.student_name}"></c:out>
</span>
<span class="show-value">
<c:out value="——本次收款数目:"></c:out>
<c:out value="${node.collection_value}"></c:out>
<% sum += Integer.parseInt("${node.collection_value}") ;%>
</span>
<span class="show-value">
<c:out value="——项目剩余款项:"></c:out>
<c:out value="${node.collection_reamain}"></c:out>
<%-- <c:out value=collectionTotal></c:out> --%>
</span>
<span class="message-time"><c:out value="${node.message_time}"></c:out></span>
<span class="message_content"><c:out value="${node.message_content}"></c:out><a class="del-collection" href="" onclick="delfunc(${node.collection_id})">删除</a></span>
</c:forEach>
</ul>
</div>
<div class = "message-time">
<span class="student-id">
<c:out value="总收款数目:"></c:out>
<!-- collection_total -->
<% out.println(sum); %>
</span>
<br/>
<span class="student-id">
<c:out value="总剩余款项:"></c:out>
<!-- collection_totalremain -->
<c:out value="999999"></c:out>
</span>
</div>
<form method="post" id="homeworkForm" name="homeworkForm"></form>
<!--模态框 添加 -->
<div class="modal fade" id="addModel" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title" id="myModalLabel">添加收款记录</h4>
</div>
<div class="modal-body">
<form role="form" method="post" action="Collection.do?type=add">
<div class="form-group">
<label for="Teacher_name">负责人姓名</label>
<input type="text" class="form-control" name="Teacher_name" id="Teacher_name" readonly>
</div>
<div class="form-group">
<label for="Student_id">客户号</label>
<input type="text" class="form-control" name="Student_id" id="Student_id">
</div>
<!-- 新加 -->
<div class="form-group">
<label for="Collection_value">收款数目</label>
<input type="text" class="form-control" name="Collection_value" id="Collection_value">
</div>
<div class="form-group">
<label for="Collection_value">收款信息</label>
<textarea rows="3" name="Collection_content" class="Collection_content form-control"></textarea>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">关闭</button>
<button type="submit" class="btn btn-primary">提交</button>
</div>
</form>
</div><!-- /.modal-content -->
</div><!-- /.modal -->
</div>
</div>
</div>
<script>
$(document).ready (function (){
var height = $("#content-list").offset().top;
$("#content-list").height($(document).height()-height-10);
$("#left-list").height($(document).height()-height-10);
});
window.onload = function () {
var str1 = $("#mclass-id").html();
$.post("Collection.do?type=query&Class_id="+str1, function (uu){
$("body").html(uu);
});
};
function delfunc (collection_id){
var str1 = $("#mclass-id");
$.post("Collection.do?type=delete&Collection_id="+collection_id,function (){$.post("Collection.do?type=query&Class_id="+str1, function (uu){
$("body").html(uu);
}); });
}
str2 =$("#muser-name").text();
$("#Teacher_name").val(str2);
</script>
</body>
</html>
红字标注1,需要对其累加显示在下边红字标注2的地方,应该怎么做