商品销售管理系统

2022-07-21 15:23:11 浏览数 (1)

大家好，又见面了，我是你们的朋友全栈君。

用JSP servlet和jquery以及SQLServer数据库实现商品销售管理系统。

功能详解： 1.查询商品 2.添加商品 3.删除商品 4.添加销售记录 5.查看销售记录

效果演示：

进入界面

商品显示页面

删除提示

销售记录查询

商品销售系统需要SQLServer数据库和程序两大部分

一：设计并实现数据库

二：程序设计

在程序正式开始之前先看一下目录结构吧

==特别注意：==引入sqljdbc4.jar和jquery-3.3.1.js架包

程序演示

bean包

Product.java

代码语言：javascript复制
package com.hnpi.bean;

public class Product { 
   
	private int ProductID;
	private String ProductName;
	private String IsUp;
	private int UnitPrice;
	private String Remark;
	public int getProductID() { 
   
		return ProductID;
	}
	public void setProductID(int productID) { 
   
		ProductID = productID;
	}
	public String getProductName() { 
   
		return ProductName;
	}
	public void setProductName(String productName) { 
   
		ProductName = productName;
	}
	public String getIsUp() { 
   
		return IsUp;
	}
	public void setIsUp(String isUp) { 
   
		IsUp = isUp;
	}
	public int getUnitPrice() { 
   
		return UnitPrice;
	}
	public void setUnitPrice(int unitPrice) { 
   
		UnitPrice = unitPrice;
	}
	public String getRemark() { 
   
		return Remark;
	}
	public void setRemark(String remark) { 
   
		Remark = remark;
	}
	public Product() { 
   
		super();
		// TODO Auto-generated constructor stub
	}
	public Product(int productID, String productName, String isUp,
			int unitPrice, String remark) { 
   
		super();
		ProductID = productID;
		ProductName = productName;
		IsUp = isUp;
		UnitPrice = unitPrice;
		Remark = remark;
	}
	
	
	
	

}

Sale.java

代码语言：javascript复制
package com.hnpi.bean;

import java.util.Date; public class Sale { 
   
	private int SaleID;
	private String SalePerson;
	private int Amount;
	private Date SaleDate;
	private int ProductID; public int getSaleID() { 
   
		return SaleID;
	}
	public void setSaleID(int saleID) { 
   
		SaleID = saleID;
	}
	public String getSalePerson() { 
   
		return SalePerson;
	}
	public void setSalePerson(String salePerson) { 
   
		SalePerson = salePerson;
	}
	public int getAmount() { 
   
		return Amount;
	}
	public void setAmount(int amount) { 
   
		Amount = amount;
	}
	public Date getSaleDate() { 
   
		return SaleDate;
	}
	public void setSaleDate(Date saleDate) { 
   
		SaleDate = saleDate;
	}
	public int getProductID() { 
   
		return ProductID;
	}
	public void setProductID(int productID) { 
   
		ProductID = productID;
	}
	public Sale() { 
   
		super();
		// TODO Auto-generated constructor stub
	}
	public Sale(int saleID, String salePerson, int amount, Date saleDate, int productID) { 
   
		super();
		SaleID = saleID;
		SalePerson = salePerson;
		Amount = amount;
		SaleDate = saleDate;
		ProductID = productID;
	}
	
	
	
	

}
servlet包

AddServlet.java

代码语言：javascript复制
package com.hnpi.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.hnpi.bean.Product;
import com.hnpi.util.DBUtil;

public class AddServlet extends HttpServlet { 
   


	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException { 
   

		doPost(request, response);
	}


	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException { 
   

		request.setCharacterEncoding("utf-8");
		response.setCharacterEncoding("utf-8");
		
		String ProductName = request.getParameter("ProductName");
		String IsUp = request.getParameter("IsUp");
		String UnitPrice = request.getParameter("UnitPrice");
		String Remark = request.getParameter("Remark");
		
		Connection conn = DBUtil.getConn();
		PreparedStatement ps = null;
		String sql = "insert into Product(ProductName, IsUp, UnitPrice, Remark) values(?,?,?,?)";
		
		try { 
   
			ps = conn.prepareStatement(sql);
			ps.setString(1, ProductName);
			ps.setString(2, IsUp);
			ps.setInt(3, Integer.parseInt(UnitPrice));
			ps.setString(4, Remark);
			ps.executeUpdate();

			
		} catch (SQLException e) { 
   
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{ 
   
			DBUtil.closeConn(conn, ps, null);
		}
		response.sendRedirect("list");
	}

}

DeleteServlet.java

代码语言：javascript复制
package com.hnpi.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.hnpi.util.DBUtil;

public class DeleteServlet extends HttpServlet { 
   


	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException { 
   

		doPost(request, response);
	}


	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException { 
   

		request.setCharacterEncoding("utf-8");
		response.setCharacterEncoding("utf-8");
		
		String id = request.getParameter("id");
		
		Connection conn = DBUtil.getConn();
		PreparedStatement ps = null;
		String sql = "delete from Product where ProductID = ?";
		
		try { 
   
			ps = conn.prepareStatement(sql);
			ps.setInt(1, Integer.parseInt(id));
			ps.executeUpdate();

			
		} catch (SQLException e) { 
   
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{ 
   
			DBUtil.closeConn(conn, ps, null);
		}
		response.sendRedirect("list");
	}

}

InsertServlet.java

代码语言：javascript复制
package com.hnpi.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Timestamp;
import java.util.Currency;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.hnpi.util.DBUtil;

public class InsertServlet extends HttpServlet { 
   


	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException { 
   

		doPost(request, response);
	}


	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException { 
   

		request.setCharacterEncoding("utf-8");
		response.setCharacterEncoding("utf-8");
		
		String ProductName = request.getParameter("ProductName");
		String Amount = request.getParameter("Amount");
		String SalePerson = request.getParameter("SalePerson");
		
		Connection conn = DBUtil.getConn();
		PreparedStatement ps = null;
		String sql = "insert into Sale(SalePerson, Amount, SaleDate, ProductID) values(?,?,?,?)";
		
		try { 
   
			ps = conn.prepareStatement(sql);
			ps.setString(1, SalePerson);
			ps.setInt(2, Integer.parseInt(Amount));
			ps.setTimestamp(3, new Timestamp(System.currentTimeMillis()));
			ps.setInt(4, 3);
			ps.executeUpdate();

			
		} catch (SQLException e) { 
   
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{ 
   
			DBUtil.closeConn(conn, ps, null);
		}
		response.sendRedirect("select");
	}

}

ListChoseServlet

代码语言：javascript复制
package com.hnpi.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.hnpi.bean.Product;
import com.hnpi.util.DBUtil;

public class ListChoseServlet extends HttpServlet { 
   


	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException { 
   

		doPost(request, response);
	}


	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException { 
   

		request.setCharacterEncoding("utf-8");
		response.setCharacterEncoding("utf-8");
		
		String ProductName = request.getParameter("ProductName");
		String Remark = request.getParameter("Remark");
		
		Connection conn = DBUtil.getConn();
		PreparedStatement ps = null;
		ResultSet rs = null;
		String sql = "select * from Product where ProductName = ? and Remark = ?";
		List<Product> products = new ArrayList<Product>();
		
		try { 
   
			ps = conn.prepareStatement(sql);
			ps.setString(1, ProductName);
			ps.setString(1, Remark);
			rs = ps.executeQuery();
			
			while(rs.next()){ 
   
				Product product = new Product();
				product.setProductID(rs.getInt(1));
				product.setProductName(rs.getString(2));
				product.setIsUp(rs.getString(3));
				product.setUnitPrice(rs.getInt(4));
				product.setRemark(rs.getString(5));
				products.add(product);
			}
			
		} catch (SQLException e) { 
   
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{ 
   
			DBUtil.closeConn(conn, ps, rs);
		}
		HttpSession session = request.getSession();
		session.setAttribute("productList", products);
		response.sendRedirect("list.jsp");
	}

}

ListServlet.java

代码语言：javascript复制
package com.hnpi.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.hnpi.bean.Product;
import com.hnpi.util.DBUtil;
import com.sun.net.httpserver.HttpsServer;

public class ListServlet extends HttpServlet { 
   

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException { 
   

		doPost(request, response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException { 
   

		request.setCharacterEncoding("utf-8");
		response.setCharacterEncoding("utf-8");
		
		String ProductName = request.getParameter("ProductName");
		String Remark = request.getParameter("Remark");
		
		Connection conn = DBUtil.getConn();
		PreparedStatement ps = null;
		ResultSet rs = null;
		String sql = "select * from Product";
		List<Product> products = new ArrayList<Product>();
		
		try { 
   
			ps = conn.prepareStatement(sql);

			rs = ps.executeQuery();
			
			while(rs.next()){ 
   
				Product product = new Product();
				product.setProductID(rs.getInt(1));
				product.setProductName(rs.getString(2));
				product.setIsUp(rs.getString(3));
				product.setUnitPrice(rs.getInt(4));
				product.setRemark(rs.getString(5));
				products.add(product);
			}
			
		} catch (SQLException e) { 
   
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{ 
   
			DBUtil.closeConn(conn, ps, rs);
		}
		HttpSession session = request.getSession();
		session.setAttribute("productList", products);
		response.sendRedirect("list.jsp");
		
	}

}

SelectServlet.java

代码语言：javascript复制
package com.hnpi.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.hnpi.bean.Product;
import com.hnpi.bean.Sale;
import com.hnpi.util.DBUtil;

public class SelectServlet extends HttpServlet { 
   


	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException { 
   

		doPost(request, response);
	}


	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException { 
   

		request.setCharacterEncoding("utf-8");
		response.setCharacterEncoding("utf-8");
		
		Connection conn = DBUtil.getConn();
		PreparedStatement ps = null;
		ResultSet rs = null;
		String sql = "select * from Sale";
		List<Sale> sales = new ArrayList<Sale>();
		
		try { 
   
			ps = conn.prepareStatement(sql);
			rs = ps.executeQuery();
			
			while(rs.next()){ 
   
				Sale sale = new Sale();
				sale.setSaleID(rs.getInt(1));
				sale.setSalePerson(rs.getString(2));
				sale.setAmount(rs.getInt(3));
				sale.setSaleDate(rs.getDate(4));
				sale.setProductID(rs.getInt(5));
				sales.add(sale);
			}
			
		} catch (SQLException e) { 
   
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{ 
   
			DBUtil.closeConn(conn, ps, rs);
		}
		HttpSession session = request.getSession();
		session.setAttribute("saleList", sales);
		response.sendRedirect("select.jsp");
	}

}
util包

DBUtil.java

代码语言：javascript复制
package com.hnpi.util;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class DBUtil { 
   
	
	public static Connection getConn(){ 
   
		String url = "jdbc:sqlserver://localhost:1433;databaseName=Test";
		String user = "sa";
		String pwd = "1";
		Connection conn = null;
		
		try { 
   
			Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
			conn = DriverManager.getConnection(url, user, pwd);
		} catch (SQLException e) { 
   
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (ClassNotFoundException e) { 
   
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return conn;
	}
	
	public static void closeConn(Connection conn, PreparedStatement ps, ResultSet rs){ 
   
		if(conn!=null){ 
   
			try { 
   
				conn.close();
			} catch (SQLException e) { 
   
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		if(ps!=null){ 
   
			try { 
   
				ps.close();
			} catch (SQLException e) { 
   
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		if(rs!=null){ 
   
			try { 
   
				rs.close();
			} catch (SQLException e) { 
   
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}

}
WEB-INF包

web.xml

代码语言：javascript复制
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
	xmlns="http://java.sun.com/xml/ns/javaee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <display-name>Shop</display-name>
  <servlet>
    <description>This is the description of my J2EE component</description>
    <display-name>This is the display name of my J2EE component</display-name>
    <servlet-name>AddServlet</servlet-name>
    <servlet-class>com.hnpi.servlet.AddServlet</servlet-class>
  </servlet>
  <servlet>
    <description>This is the description of my J2EE component</description>
    <display-name>This is the display name of my J2EE component</display-name>
    <servlet-name>DeleteServlet</servlet-name>
    <servlet-class>com.hnpi.servlet.DeleteServlet</servlet-class>
  </servlet>
  <servlet>
    <description>This is the description of my J2EE component</description>
    <display-name>This is the display name of my J2EE component</display-name>
    <servlet-name>InsertServlet</servlet-name>
    <servlet-class>com.hnpi.servlet.InsertServlet</servlet-class>
  </servlet>
  <servlet>
    <description>This is the description of my J2EE component</description>
    <display-name>This is the display name of my J2EE component</display-name>
    <servlet-name>ListChoseServlet</servlet-name>
    <servlet-class>com.hnpi.servlet.ListChoseServlet</servlet-class>
  </servlet>
  <servlet>
    <description>This is the description of my J2EE component</description>
    <display-name>This is the display name of my J2EE component</display-name>
    <servlet-name>ListServlet</servlet-name>
    <servlet-class>com.hnpi.servlet.ListServlet</servlet-class>
  </servlet>
  <servlet>
    <description>This is the description of my J2EE component</description>
    <display-name>This is the display name of my J2EE component</display-name>
    <servlet-name>SelectServlet</servlet-name>
    <servlet-class>com.hnpi.servlet.SelectServlet</servlet-class>
  </servlet>



  <servlet-mapping>
    <servlet-name>AddServlet</servlet-name>
    <url-pattern>/add</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>DeleteServlet</servlet-name>
    <url-pattern>/del</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>InsertServlet</servlet-name>
    <url-pattern>/insert</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>ListChoseServlet</servlet-name>
    <url-pattern>/listes</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>ListServlet</servlet-name>
    <url-pattern>/list</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>SelectServlet</servlet-name>
    <url-pattern>/select</url-pattern>
  </servlet-mapping>	
  <welcome-file-list>
    <welcome-file>login.jsp</welcome-file>
  </welcome-file-list>
</web-app>
JSP页面

index.jsp

代码语言：javascript复制
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() "://" request.getServerName() ":" request.getServerPort() path "/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'index.jsp' starting page</title>
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->
  </head>
  
  <body>
    <ul>
    	<li><a href="index.jsp">系统管理</a></li>
    	<li><a href="list">商品管理</a></li>
    </ul>
  </body>
</html>

list.jsp

代码语言：javascript复制
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@page import="com.hnpi.bean.Product"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() "://" request.getServerName() ":" request.getServerPort() path "/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'list.jsp' starting page</title>
    
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->
	<script src="jquery-3.3.1.js"></script>
  </head>
  
  <body>
    <form action="listes" method="post">
    商品名称：<input type="text" name="ProductName">
    商品备注：<input type="text" name="Remark">
    <input type="submit" value="查询">
    </form>
    
    <table>
    	<thead>
    		<tr>
    			<td>编号</td>
    			<td>商品名称</td>
    			<td>是否上架</td>
    			<td>单价</td>
    			<td>备注</td>
    			<td>操作</td>
    		</tr>
    	</thead>
    	<tbody>
    	<%
    		List<Product> products = (ArrayList)session.getAttribute("productList"); for(Product product : products){ 
   
    		%>
    		<tr>
    			<td><%=product.getProductID() %></td>
    			<td><%=product.getProductName() %></td>
    			<td><%=product.getIsUp() %></td>
    			<td><%=product.getUnitPrice() %></td>
    			<td><%=product.getRemark() %></td>
    			<td><a href="del?id=<%=product.getProductID() %>" class="delete">删除</a></td>
    		</tr>
    		<%
    		}
    	 %> </tbody> </table> <form action="add" method="post"> 商品名称：<input type="text" name="ProductName"/> 是否上架：<input type="radio" name="IsUp"/>是<input type="radio" name="IsUp"/>否 单价：<input type="text" name="UnitPrice"/><br/> 备注：<input type="text" name="Remark"/><br/> <input type="submit" value="添加商品" class="add"/> </form> <button><a href="select">查看销售记录</a></button> </body> <script> $(function(){ 
   
  		$(".add").on("click",function(){ 
   
  		alert("添加成功！");
  		}); $(".delete").on("click",function(){ 
   
  		alert("你确定要删除吗？");
  		});
  	});
  </script>
</html>

select.jsp

代码语言：javascript复制
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@page import="com.hnpi.bean.Sale"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() "://" request.getServerName() ":" request.getServerPort() path "/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'select.jsp' starting page</title>
    
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->
	<script src="jquery-3.3.1.js"></script>
  </head>
  
  <body>
    <form action="insert" method="post">
    商品名称：<input type="text" name="SalePerson"/><br/>
    销售数量：<input type="text" name="Amount"/>
    销售员：<input type="text" name="SalePerson"/>
    <input type="submit" value="添加销售" class="add"/>
    </form>
    <table>
    	<thead>
    		<tr>
    			<td>销售员</td>
    			<td>商品名称</td>
    			<td>单价</td>
    			<td>销售数量</td>
    			<td>销售日期</td>
    		</tr>
    	</thead>
    	<tbody>
    	<%
    		List<Sale> sales = (ArrayList)session.getAttribute("saleList"); for(Sale sale : sales){ 
   
    		%>
    		<tr>
    			<td><%=sale.getSaleID() %></td>
    			<td><%=sale.getSalePerson() %></td>
    			<td><%=sale.getProductID() %></td>
    			<td><%=sale.getAmount() %></td>
    			<td><%=sale.getSaleDate() %></td>
    		</tr>
    		<%
    		}
    		 %> </tbody> </table> </body> <script> $(function(){ 
   
  		$(".add").on("click",function(){ 
   
  		alert("添加成功");
  		})
  	});
  </script>
</html>

看到这里相信你已经知道此系统的程序原理了，赶快去试试吧.

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servlet 数据库 https jquery jsp

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