1、页面修改
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<jsp:useBean id="now" class="java.util.Date" />
<fmt:formatDate value="${now}" type="both" dateStyle="long" pattern="yyyy-MM-dd HH:mm:ss" var="currentdate" />
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>添加收支信息页面</title>
<style type="text/css">
body{
background:url("./backs.jpg");
background-repeat:repeat;
background-size:1600px 800px;
background-position-center:100%;
}
</style>
</head>
<body>
<form action="/MoneyCount/Addservlet">
<table align = "center" class="t1" border="1">
<tr>
<td colspan="2"><h1>添加收支信息</h1></td>
</tr>
<tr>
<td>收支日期</td>
<td><input type="text" name = "usedate" value="${currentdate}" readonly="readonly"/></td>
</tr>
<tr>
<td>收支使用人</td>
<td><input type="text" name = "username"></td>
</tr>
<tr>
<td>收支用途</td>
<td><input type="text" name = "userused"></td>
</tr>
<tr>
<td>收支金额</td>
<td><input type="text" name = "usermoney"></td>
</tr>
<tr>
<td>收支状况</td>
<td>
<input type="radio" name="used" value="收入">收入
<input type="radio" name="used" value="支出">支出
</td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="上传">
<input type="reset" value="清空">
<input type="button" value="返回" onclick="history.go(-1)">
</td>
</tr>
</table>
</form>
</body>
</html>
（新增登录界面）
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<style type="text/css">
body{
background:url("./backs.jpg");
background-repeat:repeat;
background-size:1600px 800px;
background-position-center:100%;
}
</style>
</head>
<body>
------------------------------------------------
用户名或密码输入错误！！！
------------------------------------------------
<form action="/MoneyCount/Loginuserservlet">
<table align = "center" class="t1" border="1">
<tr>
<td colspan="2"><h1>欢迎使用家庭小账本</h1></td>
</tr>
<tr>
<td>用户名</td>
<td><input type="text" name = "lname"/></td>
</tr>
<tr>
<td>密码</td>
<td><input type="password" name = "lpwd"/></td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="登录">
<input type="reset" value="清空">
</td>
</tr>
</table>
</form>
</body>
</html>
------------信息显示界面增加金额显示---------------------------------
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="a"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<%@ page import = "com.edu.entity.*" %>
<%@ page import = "java.util.List" %>
<%@ page import = "com.edu.dao.*" %>
<%
String path = request.getContextPath();
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<script src="<%=path%> /resource/bs/js/jquery-1.11.1.js"></script> <!-- 引入jquery -->
<link rel="stylesheet" href="<%=path%>/resource/bs/css/bootstrap.css"> <!-- 引入bootstrap.css -->
<script src="<%=path%> /resource/bs/js/bootstrap.min.js"></script><!-- 引入bootstrap.min.js -->
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>信息显示</title>
<style type="text/css">
body{
background:url("./backs.jpg");
background-repeat:repeat;
background-size:1600px 800px;
background-position-center:100%;
}
</style>
<script language = "javascript">
function jump1(){
window.location.href = "Addused.jsp";
}
function jump2(){
window.location.href = "Updateused.jsp";
}
</script>
<style type="text/css">
table {
border: 1px solid black;
margin: 0 auto;
}
td{
150px;
border: 1px solid black;
text-align: center;
}
</style>
</head>
<body>
<%!
int i=0,e=0,sum=0;
%>
<%
Userdao dao = new Userdao();
List<User> list = dao.showAll();
request.setAttribute("list", list);
int i=0,e=0;
i = dao.IncomeSum();
e = dao.ExpendSum();
sum = i-e;
%>
<form action="/MoneyCount/Showservlet">
<table align = "center" class="t1" border="1">
<tr>
<td colspan="7" class="text-center"><h2>信息展示</h2></td>
</tr>
<tr>
<td>收支编号</td>
<td>收支人姓名</td>
<td>收支用途</td>
<td>收支状况</td>
<td>收支金额</td>
<td>收支日期</td>
<td>操作</td>
</tr>
<c:forEach items="${list}" var="user">
<tr>
<td>${user.id }</td>
<td>${user.username }</td>
<td>${user.userused }</td>
<td>${user.used }</td>
<td>${user.usermoney }</td>
<td><fmt:formatDate value="${user.usedate}" type="both"/></td>
<td><a href="Deleteservlet?id=${user.id}" onclick="if(confirm('是否确定删除？')==false)return false">删除</a>
||<a href="Updateservlet?id=${user.id}">修改</a></td>
</tr>
</c:forEach>
<tr>
<td><input type="button" value="添加" onclick="jump1()">|<input type="button" value="返回" onclick="history.go(-1)"></td>
<td>支出总金额：</td>
<td><%=e %></td>
<td>收入总金额：</td>
<td><%=i %></td>
<td>总计：</td>
<td><%=sum %></td>
</tr>
<tr>
<td colspan="7" class="text-center">注：总计数值为正时，收入大于支出；总计数值为负值时，支出大于收入</td>
</tr>
</table>
</form>
</body>
</html>
2、Java代码修改
public User ResearchId(int id) {
Connection conn = DbHelper.getConnection();
String sql = "select * from userno where id = ?";
ResultSet rst = null;
User user = new User();
try {
PreparedStatement pst = conn.prepareStatement(sql);
pst.setInt(1, id);
rst = pst.executeQuery();
while(rst.next()) {
user.setId(rst.getInt("id"));
user.setUsername(rst.getString("username"));
user.setUserused(rst.getString("userused"));
user.setUsermoney(rst.getString("usermoney"));
user.setUsedate(rst.getDate("usedate"));
user.setUsed(rst.getString("used"));
}
rst.close();
pst.close();
} catch (SQLException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}
// TODO 自动生成的方法存根
return user;
}
public int IncomeSum(){
Connection conn = DbHelper.getConnection();
String sql = "select * from userno where used = ?";
String snum = null;
PreparedStatement pst = null;
int isum = 0;
try {
pst = conn.prepareStatement(sql);
pst.setString(1, "收入");
ResultSet rst = pst.executeQuery();
while(rst.next()) {
User user = new User();
user.setUsermoney(rst.getString("usermoney"));
snum = user.getUsermoney();
isum = isum + Integer.parseInt(snum);
}
rst.close();
pst.close();
} catch (SQLException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}
return isum;
}
public int ExpendSum(){
Connection conn = DbHelper.getConnection();
String sql = "select * from userno where used = ?";
int esum = 0;
String snum = null;
try {
PreparedStatement pst = conn.prepareStatement(sql);
pst.setString(1, "支出");
ResultSet rst = pst.executeQuery();
while(rst.next()) {
User user = new User();
user.setUsermoney(rst.getString("usermoney"));
snum = user.getUsermoney();
esum = esum + Integer.parseInt(snum);
}
rst.close();
pst.close();
} catch (SQLException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}
return esum;
}