java servlet數據報表

package cn.lanz.beans;

public class Buyer {
	private Integer buy_id;
	private String buy_name;//買家姓名
	private Integer buy_age;//年齡
	private String buy_sex;//性別
	private String buy_addr;//地址
	private Integer tel;//電話
	public Integer getBuy_id() {
		return buy_id;
	}
	public void setBuy_id(Integer buy_id) {
		this.buy_id = buy_id;
	}
	public String getBuy_name() {
		return buy_name;
	}
	public void setBuy_name(String buy_name) {
		this.buy_name = buy_name;
	}
	public Integer getBuy_age() {
		return buy_age;
	}
	public void setBuy_age(Integer buy_age) {
		this.buy_age = buy_age;
	}
	public String getBuy_sex() {
		return buy_sex;
	}
	public void setBuy_sex(String buy_sex) {
		this.buy_sex = buy_sex;
	}
	public String getBuy_addr() {
		return buy_addr;
	}
	public void setBuy_addr(String buy_addr) {
		this.buy_addr = buy_addr;
	}
	public Integer getTel() {
		return tel;
	}
	public void setTel(Integer tel) {
		this.tel = tel;
	}
}

package cn.lanz.beans;

public class Deal {
	private Integer deal_id;
	private Integer deal_goods_id;
	private Integer deal_buy_id;//買家ID
	private Integer deal_number;//數量
	public Integer getDeal_id() {
		return deal_id;
	}
	public void setDeal_id(Integer deal_id) {
		this.deal_id = deal_id;
	}
	public Integer getDeal_goods_id() {
		return deal_goods_id;
	}
	public void setDeal_goods_id(Integer deal_goods_id) {
		this.deal_goods_id = deal_goods_id;
	}
	public Integer getDeal_buy_id() {
		return deal_buy_id;
	}
	public void setDeal_buy_id(Integer deal_buy_id) {
		this.deal_buy_id = deal_buy_id;
	}
	public Integer getDeal_number() {
		return deal_number;
	}
	public void setDeal_number(Integer deal_number) {
		this.deal_number = deal_number;
	}
}

package cn.lanz.beans;

public class Goods {
	private Integer goods_id;
	private String goods_name;
	private Integer goods_price;
	private Integer selling_price;
	private String manufacturer;
	public Integer getGoods_id() {
		return goods_id;
	}
	public void setGoods_id(Integer goods_id) {
		this.goods_id = goods_id;
	}
	public String getGoods_name() {
		return goods_name;
	}
	public void setGoods_name(String goods_name) {
		this.goods_name = goods_name;
	}
	
	public String getManufacturer() {
		return manufacturer;
	}
	public void setManufacturer(String manufacturer) {
		this.manufacturer = manufacturer;
	}
	public Integer getGoods_price() {
		return goods_price;
	}
	public void setGoods_price(Integer goods_price) {
		this.goods_price = goods_price;
	}
	public Integer getSelling_price() {
		return selling_price;
	}
	public void setSelling_price(Integer selling_price) {
		this.selling_price = selling_price;
	}
	
}

package cn.lanz.dao;

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

public class DB {
	private static String url="jdbc:mysql:///statement";
	private static String drv="com.mysql.jdbc.Driver";
	private static String user="root";
	private static String pwd="";
	
	public static Connection conn;
	public static PreparedStatement pps;
	public static ResultSet rs;
	public static Statement st;
	
	public static Connection getConnection() throws Exception{
		Class.forName(drv);
		conn=DriverManager.getConnection(url, user, pwd);
		
		return conn;
	}
}

package cn.lanz.service;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

import cn.lanz.dao.DB;
import cn.lanz.utils.Profit;

public class Services {
	private Connection conn;
	private Statement st,st1,st2;
	private ResultSet rs,rs1,rs2;
	
	private String sql;
	private List list;
	private Profit pf;
	
	public List getProfit() throws Exception{
		
		list=new ArrayList();
		conn=DB.getConnection();
		
		st=conn.createStatement();//連接數據庫
		st1=conn.createStatement();//連接數據庫
		st2=conn.createStatement();//連接數據庫
		
		sql="select g.goods_name goodsName,g.selling_price sellingPrice,g.goods_price goodsPrice,g.goods_id goodsId from goods g,deal d " +
			"where d.deal_goods_id=g.goods_id " +
			"GROUP BY g.goods_name,g.selling_price,g.goods_price,g.goods_id";
		
		rs=st.executeQuery(sql);
		
		int temp;
		while(rs.next()){
			pf=new Profit();
			
			pf.setGoodsName(rs.getString("goodsName"));
			pf.setCostPrice(rs.getInt("goodsPrice"));
			pf.setSellingPrice(rs.getInt("sellingPrice"));
			pf.setGoodsId(rs.getInt("goodsId"));
			
			temp=0;
			temp=pf.getSellingPrice()-pf.getCostPrice();
			
			sql="select sum(d.deal_number) dealunm from deal d where d.deal_goods_id="+pf.getGoodsId();
			rs1=st1.executeQuery(sql);
			while(rs1.next()){
				pf.setTredNum(rs1.getInt("dealunm"));
			}
			
			pf.setPorfit(temp*pf.getTredNum());
			
			sql="select count(d.deal_buy_id) dealId from deal d where d.deal_goods_id="+pf.getGoodsId();
			rs2=st2.executeQuery(sql);
			while(rs2.next()){
				pf.setTimes(rs2.getInt("dealId"));
			}
			
			list.add(pf);
		}
		
		return list;
	}
}

package cn.lanz.servlet;

import java.io.IOException;
import java.util.List;

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

import cn.lanz.service.Services;

public class ShowReport extends HttpServlet {
	private static final long serialVersionUID = 1L;

	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		// TODO Auto-generated method stub
		this.doPost(req, resp);
	}

	@Override
	protected void doPost(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		Services services=new Services();
		
		try {
			List list=services.getProfit();
			
			req.getSession().setAttribute("lists", list);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		resp.sendRedirect("index.jsp");
	}

	
}

package cn.lanz.utils;

public class Profit {
	private String goodsName;
	private int goodsId;
	private int costPrice;
	private int sellingPrice;
	private int tredNum;
	private int times;
	public String getGoodsName() {
		return goodsName;
	}
	public void setGoodsName(String goodsName) {
		this.goodsName = goodsName;
	}
	public int getGoodsId() {
		return goodsId;
	}
	public void setGoodsId(int goodsId) {
		this.goodsId = goodsId;
	}
	public int getCostPrice() {
		return costPrice;
	}
	public void setCostPrice(int costPrice) {
		this.costPrice = costPrice;
	}
	public int getSellingPrice() {
		return sellingPrice;
	}
	public void setSellingPrice(int sellingPrice) {
		this.sellingPrice = sellingPrice;
	}
	public int getTredNum() {
		return tredNum;
	}
	public void setTredNum(int tredNum) {
		this.tredNum = tredNum;
	}
	public int getTimes() {
		return times;
	}
	public void setTimes(int times) {
		this.times = times;
	}
	public int getPorfit() {
		return porfit;
	}
	public void setPorfit(int porfit) {
		this.porfit = porfit;
	}
	private int porfit;
}

<%@page import="cn.lanz.utils.Profit"%>
<%@page import="java.util.List"%>
<%@ 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>
</head>
<body>
   <form action="ShowReport" method="post">
     <input type="submit" value="生成報表"/>
   </form>
   
   <table cellpadding="0" cellspacing="0" border="1">
      
      <tr>
         <th colspan="5">利潤表</th>
      </tr>
      
      <tr>
         <th>序號</th>
         <th>商品名稱</th>
         <th>賣出數量</th>
         <th>交易筆數</th>
         <th>盈利額</th>
      </tr>
      
      
	   <%
		   
		     List list=null;
		     if(session.getAttribute("lists")!=null){
		    	 list=(List)session.getAttribute("lists");
		    	 
		    	  int temp=0;
		    	  int temp1	=0;
		    	  int temp2=0;
		    	  int temp3=0;
		    	 
		    	  Profit pf;
		    	 if(list.size()>0){
		    		 for(int i=0;i<list.size();i++){
		    			 pf=new Profit();
		    			 pf=(Profit)list.get(i);
		    			 temp1+=pf.getTredNum();
		    			 temp2+=pf.getTimes();
		    			 temp3+=pf.getPorfit();
		    	  %>
		    	   <tr>
		    	      <td><%= temp+=1 %></td>
		    	      <td><%=pf.getGoodsName() %></td>
		    	      <td><%=pf.getTredNum() %></td>
		    	      <td><%=pf.getTimes() %></td>
		    	      <td><%=pf.getPorfit() %></td>
		    	   </tr>
		    	  <% 
		    		 }
			    	  %>
			    	   <tr>
			    	      <td colspan="2">合計</td>
			    	      <td><%=temp1%></td>
			    	      <td><%=temp2%></td>
			    	      <td><%=temp3%></td>
			    	   </tr>
			    	  <%  
		    	 }
		    	 
		     }
		    
		   %>
      
      
   
   </table>
   
   
</body>
</html>

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>statements</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  
  
  <servlet>
    <servlet-name>ShowReport</servlet-name>
    <servlet-class>cn.lanz.servlet.ShowReport</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>ShowReport</servlet-name>
    <url-pattern>/ShowReport</url-pattern>
  </servlet-mapping>
  
</web-app>

-- 商品表
create table goods(
goods_id int(11) not null auto_increment,
goods_name varchar(50) not null COMMENT "商品名稱",
goods_price float not null COMMENT "成本價",
selling_price float not null COMMENT "售價",
manufacturer varchar(50) not null COMMENT "製造商",
primary key(goods_id)
)DEFAULT CHARSET=utf8;
-- //
-- 買家信息
create table buyer(
 buy_id int not null auto_increment,
  buy_name varchar(20) not null COMMENT "買家姓名",
buy_age int(3) not null COMMENT "年齡",
buy_sex char(2) not null COMMENT "性別",
buy_addr varchar(50) not null COMMENT "地址",
tel int  not null COMMENT "電話",
primary key(buy_id)
)DEFAULT CHARSET=utf8;

-- //
-- 交易信息
create table deal(
deal_id int not null auto_increment,
deal_goods_id int not null,
deal_buy_id int not null COMMENT "外鍵",
deal_number int not null COMMENT "數量",
primary key(deal_id),
FOREIGN key(deal_goods_id) REFERENCES goods(goods_id),
 FOREIGN key(deal_buy_id) REFERENCES buyer(buy_id)
)DEFAULT CHARSET=utf8;

http://localhost:8080/statements/index.jsp