JavaWeb项目之租车系统管理系统

实体类User（管理员）

package com.hnjd.entity;
public class UserInfo {private int uid;private String uname;private String upsw;private String urealname;@Overridepublic String toString() {return "UserInfo{" +"uid=" + uid +", uname='" + uname + '\'' +", upsw='" + upsw + '\'' +", urealname='" + urealname + '\'' +'}';}public int getUid() {return uid;}public void setUid(int uid) {this.uid = uid;}public String getUname() {return uname;}public void setUname(String uname) {this.uname = uname;}public String getUpsw() {return upsw;}public void setUpsw(String upsw) {this.upsw = upsw;}public String getUrealname() {return urealname;}public void setUrealname(String urealname) {this.urealname = urealname;}
}

实体类Car（车辆）

package com.hnjd.entity;
public class CarInfo {private int cid;private String cname;private String cpl;private String crs;private String cprice;private String cgs;private int czt;private int uid;private int sid;@Overridepublic String toString() {return "CarInfo{" +"cid=" + cid +", cname='" + cname + '\'' +", cpl='" + cpl + '\'' +", crs='" + crs + '\'' +", cprice='" + cprice + '\'' +", cgs='" + cgs + '\'' +", czt=" + czt +", uid=" + uid +", sid=" + sid +'}';}public int getCid() {return cid;}public void setCid(int cid) {this.cid = cid;}public String getCname() {return cname;}public void setCname(String cname) {this.cname = cname;}public String getCpl() {return cpl;}public void setCpl(String cpl) {this.cpl = cpl;}public String getCrs() {return crs;}public void setCrs(String crs) {this.crs = crs;}public String getCprice() {return cprice;}public void setCprice(String cprice) {this.cprice = cprice;}public String getCgs() {return cgs;}public void setCgs(String cgs) {this.cgs = cgs;}public int getCzt() {return czt;}public void setCzt(int czt) {this.czt = czt;}public int getUid() {return uid;}public void setUid(int uid) {this.uid = uid;}public int getSid() {return sid;}public void setSid(int sid) {this.sid = sid;}
}

实体类Cus（顾客）

package com.hnjd.entity;
public class CusInfo {private int sid;private String sname;private String scard;@Overridepublic String toString() {return "CusInfo{" +"sid=" + sid +", sname='" + sname + '\'' +", scard='" + scard + '\'' +'}';}public int getSid() {return sid;}public void setSid(int sid) {this.sid = sid;}public String getSname() {return sname;}public void setSname(String sname) {this.sname = sname;}public String getScard() {return scard;}public void setScard(String scard) {this.scard = scard;}
}

dao层下的接口

package com.hnjd.dao;import com.hnjd.entity.CarInfo;
import com.hnjd.entity.CusInfo;
import com.hnjd.entity.UserInfo;import java.util.List;
public interface Dao {//查询用户信息(登录)public UserInfo selectUser(String userName,String userPwd);//查询车辆信息（查询多条用List）public List<CarInfo> selectCar();//查询顾客信息（查询多条用List）public List<CusInfo> selectCus();//根据车辆Id修改车辆信息(办理出租)public int updateById(int carId);//根据车辆ID查询车辆信息public CarInfo selectById1(int id);//根据车辆ID查询顾客信息public CusInfo selectById2(int id);
}

dao层下实现接口的方法类

package com.hnjd.dao;import com.hnjd.entity.CarInfo;
import com.hnjd.entity.CusInfo;
import com.hnjd.entity.UserInfo;import java.sql.*;
import java.util.ArrayList;
import java.util.List;public class DaoImp implements Dao {private static String driver = "com.mysql.jdbc.Driver";private static String url = "jdbc:mysql://127.0.0.1:3306/myud?useSSL=false&serverTimezone=Asia/Shanghai";@Overridepublic UserInfo selectUser(String userName,String userPwd) {//查询用户信息 登录Connection con = null;PreparedStatement ps = null;ResultSet rs = null;UserInfo ui = null;try {Class.forName(driver);con = DriverManager.getConnection(url,"root","root");String sql = "select * from userinfo where uname=? and upsw=?";ps = con.prepareStatement(sql);ps.setString(1,userName);ps.setString(2,userPwd);rs = ps.executeQuery();while(rs.next()){int uid = rs.getInt("uid");String uname = rs.getString("uname");String upsw = rs.getString("upsw");String urealname = rs.getString("urealname");ui = new UserInfo();ui.setUid(uid);ui.setUname(uname);ui.setUpsw(upsw);ui.setUrealname(urealname);}} catch (Exception e) {e.printStackTrace();}finally{if(con != null){try {con.close();} catch (SQLException e) {e.printStackTrace();}}if(ps != null){try {ps.close();} catch (SQLException e) {e.printStackTrace();}}if(rs != null){try {rs.close();} catch (SQLException e) {e.printStackTrace();}}}return ui;}/**** @return list*/@Overridepublic List<CarInfo> selectCar() {//查询车辆信息Connection con = null;PreparedStatement ps = null;ResultSet rs = null;CarInfo ci = null;List<CarInfo> list = new ArrayList<CarInfo>();try {Class.forName(driver);con = DriverManager.getConnection(url,"root","root");String sql = "select * from carinfo";ps = con.prepareStatement(sql);rs = ps.executeQuery();while(rs.next()){int cid = rs.getInt("cid");String cname = rs.getString("cname");String cpl = rs.getString("cpl");String crs = rs.getString("crs");String cprice = rs.getString("cprice");String cgs = rs.getString("cgs");int czt = rs.getInt("czt");int uid = rs.getInt("uid");int sid = rs.getInt("sid");ci = new CarInfo();ci.setCid(cid);ci.setCname(cname);ci.setCpl(cpl);ci.setCrs(crs);ci.setCprice(cprice);ci.setCgs(cgs);ci.setCzt(czt);ci.setUid(uid);ci.setSid(sid);list.add(ci);}} catch (Exception e) {e.printStackTrace();}finally{if(con != null){try {con.close();} catch (SQLException e) {e.printStackTrace();}}if(ps != null){try {ps.close();} catch (SQLException e) {e.printStackTrace();}}if(rs != null){try {rs.close();} catch (SQLException e) {e.printStackTrace();}}}return list;}@Overridepublic List<CusInfo> selectCus() {//查询顾客信息Connection con = null;PreparedStatement ps = null;ResultSet rs = null;CusInfo cus = null;List<CusInfo> list = new ArrayList<CusInfo>();try {Class.forName(driver);con = DriverManager.getConnection(url,"root","root");String sql = "select * from cusinfo";ps = con.prepareStatement(sql);rs = ps.executeQuery();while(rs.next()){int sid = rs.getInt("sid");String sname = rs.getString("sname");String scard = rs.getString("scard");cus = new CusInfo();cus.setSid(sid);cus.setSname(sname);cus.setScard(scard);list.add(cus);}} catch (Exception e) {e.printStackTrace();}finally{if(con != null){try {con.close();} catch (SQLException e) {e.printStackTrace();}}if(ps != null){try {ps.close();} catch (SQLException e) {e.printStackTrace();}}if(rs != null){try {rs.close();} catch (SQLException e) {e.printStackTrace();}}}return list;}@Overridepublic int updateById(int carId) {//根据车辆ID修改选定的租车信息(办理出租)Connection con = null;PreparedStatement ps = null;ResultSet rs = null;int result = 0;try {Class.forName(driver);con = DriverManager.getConnection(url,"root","root");String sql = "update carinfo set czt = czt+1 where cid=?";ps = con.prepareStatement(sql);ps.setInt(1,carId);result = ps.executeUpdate();} catch (Exception e) {e.printStackTrace();}finally{if(con != null){try {con.close();} catch (SQLException e) {e.printStackTrace();}}if(ps != null){try {ps.close();} catch (SQLException e) {e.printStackTrace();}}if(rs != null){try {rs.close();} catch (SQLException e) {e.printStackTrace();}}}return result;}@Overridepublic CarInfo selectById1(int id) {//根据车辆ID查询车辆信息Connection con = null;PreparedStatement ps = null;ResultSet rs = null;CarInfo ci = null;try {Class.forName(driver);con = DriverManager.getConnection(url,"root","root");String sql = "select * from carinfo where cid=?";ps = con.prepareStatement(sql);ps.setInt(1,id);rs = ps.executeQuery();while(rs.next()){int cid = rs.getInt("cid");String cname = rs.getString("cname");String cpl = rs.getString("cpl");String crs = rs.getString("crs");String cprice = rs.getString("cprice");String cgs = rs.getString("cgs");int czt = rs.getInt("czt");int uid = rs.getInt("uid");int sid = rs.getInt("sid");ci = new CarInfo();ci.setCid(cid);ci.setCname(cname);ci.setCpl(cpl);ci.setCrs(crs);ci.setCprice(cprice);ci.setCgs(cgs);ci.setCzt(czt);ci.setUid(uid);ci.setSid(sid);}} catch (Exception e) {e.printStackTrace();}finally{if(con != null){try {con.close();} catch (SQLException e) {e.printStackTrace();}}if(ps != null){try {ps.close();} catch (SQLException e) {e.printStackTrace();}}if(rs != null){try {rs.close();} catch (SQLException e) {e.printStackTrace();}}}return ci;}@Overridepublic CusInfo selectById2(int id) {//根据车辆ID查询顾客信息Connection con = null;PreparedStatement ps = null;ResultSet rs = null;CusInfo cui = null;try {Class.forName(driver);con = DriverManager.getConnection(url,"root","root");String sql = "select cusinfo.* from carinfo,cusinfo where carinfo.sid=cusinfo.sid and carinfo.cid=?";ps = con.prepareStatement(sql);ps.setInt(1,id);rs = ps.executeQuery();while(rs.next()){int sid = rs.getInt("sid");String sname = rs.getString("sname");String scard = rs.getString("scard");cui = new CusInfo();cui.setSid(sid);cui.setSname(sname);cui.setScard(scard);}} catch (Exception e) {e.printStackTrace();}finally{if(con != null){try {con.close();} catch (SQLException e) {e.printStackTrace();}}if(ps != null){try {ps.close();} catch (SQLException e) {e.printStackTrace();}}if(rs != null){try {rs.close();} catch (SQLException e) {e.printStackTrace();}}}return cui;}
}

service层下的接口

package com.hnjd.service;import com.hnjd.entity.CarInfo;
import com.hnjd.entity.CusInfo;
import com.hnjd.entity.UserInfo;import java.util.List;/*** @auther lucking* @create 2020-10-24-17:58**/
public interface service {//查询用户信息(登录)public UserInfo selectUser(String userName,String userPwd);//查询车辆信息public List<CarInfo> selectCar();//查询顾客信息public List<CusInfo> selectCus();//根据车辆Id修改车辆信息(办理出租)public int updateById(int carId);//根据车辆ID查询车辆信息public CarInfo selectById1(int id);//根据车辆ID查询顾客信息public CusInfo selectById2(int id);
}

package com.hnjd.service;import com.hnjd.entity.CarInfo;
import com.hnjd.entity.CusInfo;
import com.hnjd.entity.UserInfo;import java.util.List;
public interface service {//查询用户信息(登录)public UserInfo selectUser(String userName,String userPwd);//查询车辆信息public List<CarInfo> selectCar();//查询顾客信息public List<CusInfo> selectCus();//根据车辆Id修改车辆信息(办理出租)public int updateById(int carId);//根据车辆ID查询车辆信息public CarInfo selectById1(int id);//根据车辆ID查询顾客信息public CusInfo selectById2(int id);
}

service层下实现接口方法的类

package com.hnjd.service;
import com.hnjd.dao.DaoImp;
import com.hnjd.entity.CarInfo;
import com.hnjd.entity.CusInfo;
import com.hnjd.entity.UserInfo;
import java.util.List;
public class ServiceImp implements service {private static DaoImp di = new DaoImp();@Overridepublic UserInfo selectUser(String userName, String userPwd) {return di.selectUser(userName,userPwd);}@Overridepublic List<CarInfo> selectCar() {return di.selectCar();}@Overridepublic List<CusInfo> selectCus() {return di.selectCus();}@Overridepublic int updateById(int carId) {return di.updateById(carId);}@Overridepublic CarInfo selectById1(int id) {return di.selectById1(id);}@Overridepublic CusInfo selectById2(int id) {return di.selectById2(id);}
}

servlet层

package com.hnjd.controller;import com.hnjd.entity.CarInfo;
import com.hnjd.entity.CusInfo;
import com.hnjd.entity.UserInfo;
import com.hnjd.service.ServiceImp;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
public class Servlet extends HttpServlet {private static ServiceImp si = new ServiceImp();//业务层私有化，便于调用private static String name = null;//经办人（管理员）姓名@Overrideprotected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {doPost(request, response);}@Overrideprotected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {//进行编码，防止乱码request.setCharacterEncoding("utf-8");response.setCharacterEncoding("utf-8");PrintWriter pw = response.getWriter();//获取服务器路径(*.do)String path = request.getServletPath();path = path.substring(1,path.length());if(path.equals("login.do")){//登录//获取浏览器传过来的账户和密码String userName = request.getParameter("userName");String userPwd = request.getParameter("userPwd");//调用业务层UserInfo ui = si.selectUser(userName,userPwd);//浏览器传过来的账户和密码与数据库里的用户信息进行对比if(ui != null){//若ui不为空，证明有此用户，即-->登录成功this.name = ui.getUrealname();//将管理员姓名给到-->经办人request.getRequestDispatcher("select.do").forward(request,response);//登录成功后，浏览器通过 select.do 转发到 select.jsp 页面，得到租车信息页面}else{//登录失败pw.println("登陆失败!");}}else if(path.equals("select.do")){//查询租车信息 和 顾客信息//调用业务层得到租车信息List<CarInfo> list1 = si.selectCar();//租车信息为多条时,用List集合接收//List<CusInfo> list2 = si.selectCus();//顾客信息为多条时,用List集合接收if(list1 != null ){//若，list 集合得到了业务层传过来的数据（即从数据库得到租车信息）request.setAttribute("list1",list1);//将得到的数据传递到 select.jsp 页面进行接收//request.setAttribute("list2",list2);request.setAttribute("name",this.name);//经办人姓名request.getRequestDispatcher("select.jsp").forward(request,response);//将得到的数据传递到 select.jdp 页面进行展示}else{//list 为 null 时 --> 没有通过业务层得到数据库的数据pw.println("数据获取失败!");}}else if(path.equals("update.do")){//办理出租(修改)//获取浏览器传过来的 车辆ID 和 顾客IDString carid = request.getParameter("carid");//String cusid = request.getParameter("cusid");//调用业务层确定要修改的某一条车辆数据int result = si.updateById(Integer.parseInt(carid));if(result != 0){//修改成功request.getRequestDispatcher("select.do").forward(request,response);//修改成功后，服务器地址转发到 select.do,通过它将页面再转发到 select.jsp 页面进行展示}else{//修改失败pw.println("修改失败!");}}else if(path.equals("selectByid.do")){//出租状态为 已出租，查询出租详情//获取浏览器传过来的 车辆ID,以确定某个顾客与车辆的信息String id = request.getParameter("carid");System.out.println(id);//将浏览器传过来的 车辆ID，给到业务层，以确定某个顾客与车辆的信息CarInfo car = si.selectById1(Integer.parseInt(id));//确定车辆CusInfo cus = si.selectById2(Integer.parseInt(id));//确定客户if(car != null && cus != null){//信息确定成功request.setAttribute("car",car);//将车辆信息传给 xingqing.jsp(详情页面)request.setAttribute("cus",cus);//将顾客信息传给 xingqing.jsp(详情页面)request.getRequestDispatcher("xingqing.jsp").forward(request,response);//将已得到的数据转发到 xingqing.jsp 页面}else{//信息确定失败pw.println("数据获取失败!");}}}
}

XML文件配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"version="4.0"><servlet><servlet-name>CarsrentServlet</servlet-name><servlet-class>com.hnjd.controller.Servlet</servlet-class></servlet><servlet-mapping><servlet-name>CarsrentServlet</servlet-name><url-pattern>*.do</url-pattern></servlet-mapping>
</web-app>

jsp登录页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html><head><title>登录</title></head><body><p>顺丰租车公司后台管理系统</p><form action="login.do" method="post">账号:<input type="text" name="userName"><br><br>密码:<input type="password" name="userPwd"><br><br><input type="submit" value="登录"></form></body>
</html>

查询页面

<%@ page import="java.util.ArrayList" %>
<%@ page import="com.hnjd.entity.CarInfo" %>
<%@ page import="com.hnjd.entity.CusInfo" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head><title>租车信息</title>
</head>
<body><%//接收 Servlet 类传过来的信息ArrayList<CarInfo> list1 = (ArrayList<CarInfo>)request.getAttribute("list1");//ArrayList<CusInfo> list2 = (ArrayList<CusInfo>)request.getAttribute("list2");if(list1 != null){//接收到数据,进行遍历展示出来%><table border="2"><thead><tr><th>编号</th><th>车辆名称</th><th>排量</th><th>可载人数</th><th>日租价</th><th>出租公司</th><th>车辆状态</th><th>经办人</th><th>操作</th></tr></thead><%//进行遍历for(CarInfo car : list1){%><tbody><tr><th><%=car.getCid()%></th><th><%=car.getCname()%></th><th><%=car.getCpl()%></th><th><%=car.getCrs()%></th><th><%=car.getCprice()%></th><th><%=car.getCgs()%></th><%if(car.getCzt() == 0){%><th>未出租</th><th><%=request.getAttribute("name")%></th><th><a href="<%=request.getContextPath()%>/update.do?carid=<%=car.getCid()%>">办理出租</a></th><%}else if(car.getCzt() == 1){%><th><a href="<%=request.getContextPath()%>/selectByid.do?carid=<%=car.getCid()%>">已出租</a></th><th><%=request.getAttribute("name")%></th><th>暂无业务</th><%}%></tr></tbody><%}%></table><%}%>
</body>
</html>

详情页面

<%@ page import="com.hnjd.entity.CarInfo" %>
<%@ page import="com.hnjd.entity.CusInfo" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head><title>租车明细</title>
</head>
<body>
<%CarInfo car = (CarInfo)request.getAttribute("car");//获取车辆信息CusInfo cus = (CusInfo)request.getAttribute("cus");//获取顾客信息if(car != null && cus != null){
%><table><thead><tr><th colspan="2">车辆出租明细</th></tr></thead><tbody><tr><th>车辆名称:</th><th><%=car.getCname()%></th></tr><tr><th>排量:</th><th><%=car.getCpl()%></th></tr><tr><th>可载人数:</th><th><%=car.getCrs()%></th></tr><tr><th>日租价:</th><th><%=car.getCprice()%></th></tr></tbody></table><table><thead><tr><th colspan="2">租赁人信息</th></tr></thead><tbody><tr><th>客户姓名:</th><th><%=cus.getSname()%></th></tr><tr><th>身份证号:</th><th><%=cus.getScard()%></th></tr><tr><th>租赁时间:</th><%int time = 3;//默认租赁时间为3天int sum = time * Integer.parseInt(car.getCprice());//租赁总价%><th><%=time%>天</th></tr><tr><th>备注说明:</th><th>暂无</th></tr></tbody></table><table><thead><tr><th colspan="2">租金合计</th></tr></thead><tbody><tr><th>合计:</th><th><%=sum%>元</th></tr><tr><th><a href="<%=request.getContextPath()%>/select.do">关闭</a></th></tr></tbody></table>
<%}%>
</body>
</html>

项目整体流程图及MySQL所需要创建的表

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一.项目背景编写一个控制台程序,要求实现如下功能: 1.展示所有可租车辆 2.选择车型,租车量 3.显示租车清单,包括:总载货量,总载客量,总金额等: 二.车的类别客车:只能载客货车:只能载货 ...

JavaWeb项目之租车系统管理系统

实体类User（管理员）

实体类Car（车辆）

实体类Cus（顾客）

dao层下的接口

dao层下实现接口的方法类

service层下的接口

service层下实现接口方法的类

servlet层

XML文件配置

jsp登录页面

查询页面

详情页面

项目整体流程图及MySQL所需要创建的表

相关配置文件

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