记账系统java web
2024-04-10 19:01:23
实体类 entity
import java.util.Date;public class Account {private Integer id;private String name;//标题private Date time;//时间private Integer category;//类别：0不限、1支出、2收入、3转账、4借出、5借入、6还入、7还出private Double price;//金额private String explan;public Account() {}public Account(String name, Date time, Integer category, Double price, String explan) {this.name = name;this.time = time;this.category = category;this.price = price;this.explan = explan;}public Account(Integer id, String name, Date time, Integer category, Double price, String explan) {this.id = id;this.name = name;this.time = time;this.category = category;this.price = price;this.explan = explan;}// get set toString方法省略
}
Dao层
package dao;import entity.Account;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import util.DBUtils;import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;public class AccountDao {private QueryRunner queryRunner = new QueryRunner(DBUtils.getDataSource());/*** 获取所有账单信息* 当category为0时查询所有** @return*/public List<Account> getAccountList(int category, Date startTime, Date endTime) {String sql = "select id,name,`time`,category,price,explan from account where 1=1";List param = new ArrayList();if (category != 0) {sql += " and category=? ";param.add(category);}if (startTime != null) {sql += " and `time`>? ";param.add(startTime);}if (endTime != null) {sql += " and `time`<? ";param.add(endTime);}try {return queryRunner.query(sql, new BeanListHandler<>(Account.class), param.toArray());} catch (SQLException e) {e.printStackTrace();}return null;}/*** 添加账单* @param account* @return*/public int addAccount(Account account){String sql = "insert into account(name,`time`,category,price,explan) values(?,?,?,?,?)";try {return queryRunner.update(sql,account.getName(),account.getTime(),account.getCategory(),account.getPrice(),account.getExplan());} catch (SQLException e) {e.printStackTrace();}return 0;}
}
service层
package service;import dao.AccountDao;
import entity.Account;import java.util.Date;
import java.util.List;public class AccountService {/*** 根据category* 查询所有账单* @param category 要查的类别* @return*/public List<Account> getAccountList(int category, Date startTime, Date endTime){AccountDao accountDao = new AccountDao();return accountDao.getAccountList(category,startTime,endTime);}/*** 记账（添加账单）* @param account* @return*/public int addAccount(Account account){AccountDao accountDao = new AccountDao();return accountDao.addAccount(account);}
}
contrallor层
package servlet;import entity.Account;
import service.AccountService;
import util.ParameterUtil;import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;/*** 根据表单输入* 获取账单信息*/
@WebServlet(name = "AccountListServlet", urlPatterns = "/accountlist")
public class AccountListServlet extends HttpServlet {private AccountService accountService = new AccountService();private SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd");@Overrideprotected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {Integer category = ParameterUtil.getInteger(request, "category");String startTime = ParameterUtil.getString(request, "startTime");String endTime = ParameterUtil.getString(request, "endTime");List<Account> accountList = null;if (startTime != null) {try {if (endTime != null) {accountList = accountService.getAccountList(category, sf.parse(startTime), sf.parse(endTime));} else {accountList = accountService.getAccountList(category, sf.parse(startTime), null);}} catch (ParseException e) {e.printStackTrace();}} else {accountList = accountService.getAccountList(category, null, null);}request.setAttribute("accountList", accountList);for (Account account : accountList) {System.out.println(account);}request.getRequestDispatcher("accountlist.jsp").forward(request, response);}@Overrideprotected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {doPost(request, response);}
}
import entity.Account;
import service.AccountService;
import util.ParameterUtil;import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.text.ParseException;
import java.text.SimpleDateFormat;/*** 记账功能*/
@WebServlet(name = "AddAccountServlet", urlPatterns = "/add")
public class AddAccountServlet extends HttpServlet {private AccountService accountService = new AccountService();private SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");@Overrideprotected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {String name = ParameterUtil.getString(request,"name");String time = ParameterUtil.getString(request,"time");Integer category = ParameterUtil.getInteger(request,"category");Double price = ParameterUtil.getDouble(request,"price");String explan = ParameterUtil.getString(request,"explan");try {Account account = new Account(name,sf.parse(time),category,price,explan);int res = accountService.addAccount(account);request.setAttribute("message",res>0?"记账成功":"记账失败");request.getRequestDispatcher("accountlist.jsp").forward(request,response);} catch (ParseException e) {e.printStackTrace();}}@Overrideprotected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {doPost(request, response);}
}
过滤器
import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import java.io.IOException;@WebFilter("/*")
public class EncodingFilter implements Filter {@Overridepublic void init(FilterConfig filterConfig) throws ServletException {}@Overridepublic void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {servletRequest.setCharacterEncoding("UTF-8");servletResponse.setContentType("text/html;charset=UTF-8");filterChain.doFilter(servletRequest, servletResponse);}@Overridepublic void destroy() {}
}工具类
package util;import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.pool.DruidDataSourceFactory;import java.io.InputStream;
import java.sql.*;
import java.util.Properties;public class DBUtils {private static final Properties PROPERTIES = new Properties();private static ThreadLocal<Connection> threadLocal = new ThreadLocal<>();//ThreadLocal能保证当前线程共享同一个对象private static DruidDataSource dataSource;//数据源 连接池public static DruidDataSource getDataSource() {return dataSource;}static {InputStream is = DBUtils.class.getResourceAsStream("/db.properties");try {PROPERTIES.load(is);//创建连接池dataSource = (DruidDataSource) DruidDataSourceFactory.createDataSource(PROPERTIES);} catch (Exception e) {e.printStackTrace();}}public static Connection getConnection() {try {Connection connection = threadLocal.get();//先去拿，如果有的话，代表当前线程曾经打开过连接if (connection == null) {//当前线程没有打开过连接//连接池获取连接connection = dataSource.getConnection();threadLocal.set(connection);//将connection存入ThreadLocal，能保证当前线程使用的是同一个connection}return connection;} catch (SQLException e) {e.printStackTrace();}return null;}
}
package util;import javax.servlet.http.HttpServletRequest;public class ParameterUtil {//从请求中获取String类型的参数public static String getString(HttpServletRequest request, String name) {String param = request.getParameter(name);if (param == null || param.trim().length() == 0) {return null;}return param.trim();}public static Integer getInteger(HttpServletRequest request, String name) {String param = getString(request, name);if (param == null) {//没传参数return null;}try {return Integer.parseInt(param);} catch (NumberFormatException e) {//如果参数不是数字格式e.printStackTrace();}return null;}public static Double getDouble(HttpServletRequest request, String name) {String param = getString(request, name);if (param == null) {//没传参数return null;}try {return Double.parseDouble(param);} catch (NumberFormatException e) {//如果参数不是数字格式e.printStackTrace();}return null;}}
配置文件
driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/bank?useSSL=false&characterEncoding=utf-8
username=root
password=123456
initialSize=10
maxActive=50
minIdle=5
maxWait=5000
前端
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%--Created by IntelliJ IDEA.User: EVA_01Date: 2020/7/24 0024Time: 20:19To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head><title>账单</title>
</head>
<body>
<div align="center"><div><h2>记账管理</h2></div><br/><div style="width: 60%"><form method="post" action="accountlist">类型：<select name="category"><option value="0">不限</option><option value="1">支出</option><option value="2">收入</option><option value="3">转账</option><option value="4">借出</option><option value="5">借入</option><option value="6">还入</option><option value="7">还出</option></select> 时间：从<input type="text" name="startTime" >到<input type="text" name="endTime"> <input type="submit" value="搜索"> <a href="addaccount.jsp"><button type="button">记账</button></a></form><c:if test="${!requestScope.accountList.isEmpty()}"><table border="1" style="border-color: white ;text-align: center" width="100%"><tr bgcolor="#7cfc00"><td>标题</td><td>记账时间</td><td>类别</td><td>金额</td><td>说明</td></tr><c:forEach items="${requestScope.accountList}" var="account" varStatus="i"><tr bgcolor="${i.count%2!=0?'yellow':''}"><td>${account.name}</td><td>${account.time}</td><td><c:choose><c:when test="${account.category==1}">支出</c:when><c:when test="${account.category==2}">收入</c:when><c:when test="${account.category==3}">转账</c:when><c:when test="${account.category==4}">借出</c:when><c:when test="${account.category==5}">借入</c:when><c:when test="${account.category==6}">还入</c:when><c:when test="${account.category==7}">还出</c:when><c:otherwise>不限</c:otherwise></c:choose></td><td>${account.price}</td><td>${account.explan}</td></tr></c:forEach></c:if><c:if test="${requestScope.accountList.isEmpty()}"><div align="center"><h3>没有任何账单记录</h3></div></c:if></table>${requestScope.message}</div>
</div>
</body>
</html>
<%--Created by IntelliJ IDEA.User: EVA_01Date: 2020/7/25 0025Time: 9:45To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head><title>记账</title><style>body {width: 35%;margin: 0 auto;}div {align-content: center;}.title {text-align: center;}.modal-body {width: auto;align-content: center;}.tp input {width: 182px;}.name input {width: 420px;}.explan textarea {width: 400px;}.button {margin-left: 160px;}</style>
</head>
<body>
<form method="post" action="add"><div><div class="title"><h2>记账</h2></div><div class="modal-body"><div>类型：<input type="radio" name="category" value="1">支出<input type="radio" name="category" value="2">收入<input type="radio" name="category" value="3">转账<input type="radio" name="category" value="4">借出<input type="radio" name="category" value="5">借入<input type="radio" name="category" value="6">还入<input type="radio" name="category" value="7">还出</div><div class="name">标题：<input type="text" name="name"></div><div class="tp"><span>日期：<input type="text" name="time"></span><span>金额：<input type="text" name="price" value="0"></span></div><div class="explan"><span>说明：</span><textarea name="explan"></textarea></div><div class="button"><input type="reset" value="重置"><input type="submit" value="保存"><a href="accountlist.jsp"><button type="button">返回</button></a></div></div></div>
</form>
</body>
</html>包
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