此处只放相关部分，如有需要，请参考同名下本人的其他博客
index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>首页</title>
</head>
<style type="text/css">
*{margin: 0;padding: 0}
html,body{height: 100%} /*这里很关键*/
.outer-wrap{
/*只有同时为html和body设置height: 100%时，这里的height才生效，
并且随浏览器窗口变化始终保持和浏览器视窗等高*/
height: 100%;
position: relative;
background-image: url(‘images/01.jpg‘);
}
.index-panel{
width: 400px;
height: 300px;
background-image: url(‘images/04.jpg‘);
position: absolute;
top: 50%;
left: 50%;
margin-top: -150px;
margin-left: -200px;
}
</style>
<body>
<%
request.setCharacterEncoding("utf-8");
String message=(String)request.getAttribute("message");
if(message!=null){
if(message.equals("error")){
%>
<script type="text/javascript">
alert("用户名或密码错误");
</script>
<%
}else if(message.equals("noerror")){
%>
<script type="text/javascript">
alert("登录成功");
</script>
<%
}else{
}
}
%>
<div class="outer-wrap">
<div style="font-size:160px;text-align:center">家庭记账本</div>
<div class="index-panel">
<div style="font-size:40px;text-align:center">欢迎您的使用</div>
<div style="font-size:30px;text-align:center"> <a href="add.jsp">记账</a><br/> </div>
<div style="font-size:30px;text-align:center"> <a href="show.jsp">查看账目</a> </div>
</div>
</div>
</body>
</html>
add.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>记账</title>
</head>
<style type="text/css">
*{margin: 0;padding: 0}
html,body{height: 100%} /*这里很关键*/
.outer-wrap{
/*只有同时为html和body设置height: 100%时，这里的height才生效，
并且随浏览器窗口变化始终保持和浏览器视窗等高*/
height: 100%;
position: relative;
background-image: url(‘images/01.jpg‘);
}
.add-panel{
width: 400px;
height: 300px;
background-image: url(‘images/06.jpg‘);
position: absolute;
top: 50%;
left: 50%;
margin-top: -150px;
margin-left: -200px;
}
</style>
<body>
<%
request.setCharacterEncoding("utf-8");
String message=(String)request.getAttribute("message");
if(message!=null){
if(message.equals("error")){
%>
<script type="text/javascript">
alert("添加失败");
</script>
<%
}else if(message.equals("noerror")){
%>
<script type="text/javascript">
alert("添加成功");
</script>
<%
}else{
}
}
%>
<div class="outer-wrap">
<div style="font-size:160px;text-align:center">家庭记账本</div>
<div class="add-panel">
<div style="text-align:center;color:yellow">请输入要添加的账目信息：</div><br/>
<form action="AddBillServlet" method="post">
<div style="text-align:center;color:yellow">
账目类型<select id="btype" name="btype">
<option value="饮食">饮食</option>
<option value="教育">教育</option>
<option value="购物">购物</option>
<option value="医疗">医疗</option>
<option value="收入">收入</option>
<option value="借贷">借贷</option>
<option value="其它">其它</option>
</select>
</div>
<div style="text-align:center;color:red">注：借贷和其它类型的账目不计入收支</div>
<div style="text-align:center;color:yellow">
金额<input type="text" name="bmoney"><br/>
</div>
<div style="text-align:center;color:yellow">
日期<input type="date" name="bdate"><br/>
</div>
<div style="text-align:center;color:yellow">
备注<input type="text" name="bremark"><br/>
</div>
<div style="text-align:center;color:yellow">
<input type="submit" value="添加"><br/>
</div>
</form>
</div>
</div>
</body>
</html>
AddBillServlet.java
package com.zzw.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.zzw.entity.Bill;
import com.zzw.service.IUserService;
import com.zzw.service.Impl.UserServiceImpl;
public class AddBillServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
response.setContentType("text/html; charset=utf-8");
String type= request.getParameter("btype");
int money=Integer.parseInt(request.getParameter("bmoney"));
String date= request.getParameter("bdate");
String remark= request.getParameter("bremark");
Bill bill =new Bill(type,money,date,remark);
//接口 x=new 实现类（）
IUserService userservice = new UserServiceImpl();
boolean result=userservice.AddBill(bill);
if(!result) {
request.setAttribute("message","error");
}else {
request.setAttribute("message","noerror");
}
request.getRequestDispatcher("add.jsp").forward(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
UserServiceImpl.java
package com.zzw.service.Impl;
import com.zzw.dao.IUserDao;
import com.zzw.dao.Impl.UserDaoImpl;
import com.zzw.entity.Bill;
import com.zzw.entity.User;
import com.zzw.service.IUserService;
public class UserServiceImpl implements IUserService{
IUserDao userdao= new UserDaoImpl();
//登录
public boolean Login(User user) {
boolean flag=false;
if(userdao.Login(user.getUname(),user.getUpwd())) {
flag=true;
}
return flag;
}
//注册
public boolean Register(User user) {
boolean flag=false;
if(!userdao.isExist(user.getUname())) {
userdao.Register(user);
flag=true;
}else {
System.out.println("此人已存在");
}
return flag;
}
//根据账号查询用户
public User Query(String uname) {
return userdao.Query(uname);
}
//记账
public boolean AddBill(Bill bill) {
boolean flag=false;
if(userdao.AddBill(bill)) {
flag=true;
}
return flag;
}
}
IUserService.java
package com.zzw.service;
import com.zzw.entity.Bill;
import com.zzw.entity.User;
public interface IUserService {
//登录
public boolean Login(User user);
//注册
public boolean Register(User user) ;
//根据账号查询用户
public User Query(String uname) ;
//记账
public boolean AddBill(Bill bill) ;
}
Bill.java
package com.zzw.entity;
public class Bill {
private int bid;
private String btype;
private int bmoney;
private String bdate;
private String bremark;
public Bill() {
}
public Bill(String btype, int bmoney, String bdate, String bremark) {
this.btype = btype;
this.bmoney = bmoney;
this.bdate = bdate;
this.bremark = bremark;
}
public Bill(int bid, String btype, int bmoney, String bdate, String bremark) {
this.bid = bid;
this.btype = btype;
this.bmoney = bmoney;
this.bdate = bdate;
this.bremark = bremark;
}
@Override
public String toString() {
return "Bill [bid=" + bid + ", btype=" + btype + ", bmoney=" + bmoney + ", bdate=" + bdate + ", bremark="
+ bremark + "]";
}
public int getBid() {
return bid;
}
public void setBid(int bid) {
this.bid = bid;
}
public String getBtype() {
return btype;
}
public void setBtype(String btype) {
this.btype = btype;
}
public int getBmoney() {
return bmoney;
}
public void setBmoney(int bmoney) {
this.bmoney = bmoney;
}
public String getBdate() {
return bdate;
}
public void setBdate(String bdate) {
this.bdate = bdate;
}
public String getBremark() {
return bremark;
}
public void setBremark(String bremark) {
this.bremark = bremark;
}
}
UserDaoImpl.java
package com.zzw.dao.Impl;
import java.sql.ResultSet;
import java.sql.SQLException;
import com.zzw.dao.IUserDao;
import com.zzw.entity.Bill;
import com.zzw.entity.User;
import com.zzw.utils.DBUtil;
public class UserDaoImpl implements IUserDao{
//注册
public boolean Register(User user) {
String sql="insert into user(uname,upwd,usex) values(?,?,?)" ;
Object [] params= {user.getUname(),user.getUpwd(),user.getUsex()};
return DBUtil.executeUpdate(sql, params);
}
//查询账户是否存在
public boolean isExist(String uname) {
return Query(uname)==null? false:true;
}
//登录
public boolean Login(String uname,String upwd) {
return Query(uname,upwd)==null? false:true;
}
//根据账号查询用户全部信息
public User Query(String uname) {
User user= null;
ResultSet rs = null;
try {
String sql="select * from user where uname =?" ;
Object [] params= {uname};
rs=DBUtil.executeQuery(sql, params);
if(rs.next()) {
String name=rs.getString("uname");
String pwd=rs.getString("upwd");
String sex=rs.getString("usex");
user= new User(name,pwd,sex);
}
}catch(SQLException e) {
e.printStackTrace();
}catch(Exception e) {
e.printStackTrace();
}finally {
try {
//先开的后关，后开的先关
if(rs!=null)rs.close();
if(DBUtil.pstmt!=null)DBUtil.pstmt.close();
if(DBUtil.connection !=null)DBUtil.connection.close();
}catch(SQLException e) {
e.printStackTrace();
}finally {
}
}
return user;
}
//根据账户密码确定是否存在
public User Query(String uname,String upwd) {
User user= null;
ResultSet rs = null;
try {
String sql="select * from user where uname =? and upwd=?" ;
Object [] params= {uname,upwd};
rs=DBUtil.executeQuery(sql, params);
if(rs.next()) {
String name=rs.getString("uname");
String pwd=rs.getString("upwd");
String sex=rs.getString("usex");
user= new User(name,pwd,sex);
}
}catch(SQLException e) {
e.printStackTrace();
}catch(Exception e) {
e.printStackTrace();
}finally {
try {
//先开的后关，后开的先关
if(rs!=null)rs.close();
if(DBUtil.pstmt!=null)DBUtil.pstmt.close();
if(DBUtil.connection !=null)DBUtil.connection.close();
}catch(SQLException e) {
e.printStackTrace();
}finally {
}
}
return user;
}
//记账
public boolean AddBill(Bill bill) {
String sql="insert into bill(btype,bmoney,bdate,bremark) values(?,?,?,?)" ;
Object [] params= {bill.getBtype(),bill.getBmoney(),bill.getBdate(),bill.getBremark()};
return DBUtil.executeUpdate(sql, params);
}
}
IUserDao.java
package com.zzw.dao;
import com.zzw.entity.Bill;
import com.zzw.entity.User;
public interface IUserDao {
//注册
public boolean Register(User user) ;
//查询账户是否存在
public boolean isExist(String uname) ;
//登录
public boolean Login(String uname,String upwd) ;
//根据帐号查询用户全部信息
public User Query(String uname) ;
//记账
public boolean AddBill(Bill bill);
}
下图为数据库中bill表
登录成功后进入首页
原文地址：https://www.cnblogs.com/yeyueweiliang/p/12234769.html
时间： 2024-10-08 03:09:00