商品的CRUD，分页查询

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
	String path = request.getContextPath();
	String basePath = request.getScheme() + "://"
			+ request.getServerName() + ":" + request.getServerPort()
			+ path + "/";
%>


















	
欢迎来到商品信息管理平台
	

		查询所有商品
		分页查询商品
	

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
	String path = request.getContextPath();
%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>

















	
商品的列表页面
	

		
		
				
				

			

				
名称
					   
					 
				
			

				

				
商品序号
				
商品名称
				
商品价格
				
操作
			
			

					

					
${l.pid }
					
${l.pname}
					
${l.market_price}
					
修改 
						删除
					
				
			
		
	

package product;

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

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


public class productfindallservlet extends HttpServlet {


	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		/*调用业务层查找*/
		try{
			productservice ps=new productservice();
			Listlist=ps.findall();
			//数据保存传给jsp页面
			request.setAttribute("list", list);
			//页面跳转
			request.getRequestDispatcher("/html/prolist.jsp").forward(request, response);
		}catch(Exception e){
			e.printStackTrace();
			throw new RuntimeException();
		}
	}


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

}

/*业务层查询所有商品的方法*/
	public List findall() throws SQLException {
		// TODO Auto-generated method stub
		productdao pd=new productdao();
		return pd.findall();
	}

public List findall() throws SQLException {
		// DAO中查询所有商品
		QueryRunner qr=new QueryRunner(c3p0tool.getDataSource());
		String sql="select *from product order by pdate desc";
		Listlist=qr.query(sql, new BeanListHandler(product.class));
		return list;
	}

<%@page import="utils.UUIDutils"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
	String path = request.getContextPath();
	String basePath = request.getScheme() + "://"
			+ request.getServerName() + ":" + request.getServerPort()
			+ path + "/";
%>


















	<%
		String token = UUIDutils.getUUID();//产生一个随机序号
		session.setAttribute("token", token);//将随机序号存储到session的token中
	%>
	
添加商品的页面
	

		

			

				
商品名称
				

			
			

				
商品市场价格
				

			
			

				

			
		
		 //设置隐藏标签保存token
	

package utils;

import java.util.UUID;

//产生随机的字符串
public class UUIDutils {
	public static String getUUID(){
		return UUID.randomUUID().toString();
	}
}

package product;

import java.io.IOException;
import java.io.PrintWriter;
import java.lang.reflect.InvocationTargetException;
import java.sql.SQLException;
import java.util.Date;
import java.util.Map;

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

import org.apache.commons.beanutils.BeanUtils;

import utils.UUIDutils;

public class productaddservlet extends HttpServlet {
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		/*
		 * 
		 * 添加商品的servlet
		 */ 
		request.setCharacterEncoding("UTF-8");
		//判断是否为重复提交
		String token1=(String) request.getSession().getAttribute("token");//获得session中的token
		String token2=request.getParameter("token");//获得表单提交的token
		request.getSession().removeAttribute("token");//移除session中的token
		if(!token2.equals(token1)){
			request.setAttribute("msg", "亲，不能重复提交了哦");
			request.getRequestDispatcher("/html/msg.jsp").forward(request, response);//跳转到提示页面
			return;
		}

		Mapmap=request.getParameterMap();//将表单中的所有数封装在map中
		//封装数据
		product p=new product();
		try {
			BeanUtils.populate(p, map);//将map封装成product对象，map

public void save(product p) throws SQLException {
		/*业务层保存商品*/
		productdao pd=new productdao();
		pd.save(p);
	}

public void save(product p) throws SQLException {
		// DAO中保存商品的方法
		QueryRunner qr=new QueryRunner(c3p0tool.getDataSource());
		String sql="insert into product values(?,?,?,?)";
		qr.update(sql, p.getPid(),p.getPname(),p.getMarket_price(),p.getPdate());
	}

package product;

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

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

public class editproductservlet extends HttpServlet {
	/*商品编辑的servlet*/

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		//接收数据pid
		String pid=request.getParameter("pid");
		productservice ps=new productservice();
		try {
			product p=ps.findbyid(pid);//通过id查找到这个商品
			p.setPid(pid);
			request.setAttribute("product", p);//将查询到的product保存起来
			request.getRequestDispatcher("/html/editproduct.jsp").forward(request, response);
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}


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

		doGet( request,  response);
	}

}

public product findbyid(String pid) throws SQLException {
		/*业务层根据ID来查找商品*/
		productdao pd=new productdao();
		return pd.findbyid(pid);
	}

public product findbyid(String pid) throws SQLException {
		// DAO中通过pid来查询商品
		QueryRunner qr=new QueryRunner(c3p0tool.getDataSource());
		String sql="select *from product where pid=?";
		product p=qr.query(sql, new BeanHandler(product.class),pid);
		return p;
	}

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>


















	
修改商品的页面
	

		

			

				
商品名称
				

			
			

				
商品市场价格
				

			
			

				

			
		
		 
	

package product;

import java.io.IOException;
import java.io.PrintWriter;
import java.lang.reflect.InvocationTargetException;
import java.sql.SQLException;
import java.util.Date;
import java.util.Map;

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

import org.apache.commons.beanutils.BeanUtils;

public class updateproductservlet extends HttpServlet {

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		//接收数据
		request.setCharacterEncoding("UTF-8");
		Mapmap=request.getParameterMap();//将接收的的参数封装在map中
		product p=new product();
		try {
			BeanUtils.populate(p, map);//将map封装在product中
			p.setPdate(new Date());
			//调用业务层处理数据
			productservice ps=new productservice();
			ps.update(p);
			request.getRequestDispatcher("/productfindallservlet").forward(request, response);
		} catch (IllegalAccessException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (InvocationTargetException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}


	}

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

		doGet(request, response);
	}

}

	public void update(product p) throws SQLException {
		// 业务层修改商品的方法
		productdao pd=new productdao();
		pd.update(p);

	}

public void update(product p) throws SQLException {
		// DAO中修改商品
		QueryRunner qr=new QueryRunner(c3p0tool.getDataSource());
		String sql="update product set pname=?,market_price=? where pid=?";
		qr.update(sql,p.getPname(),p.getMarket_price(),p.getPid());
	}

package product;

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

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

public class deleteproductservlet extends HttpServlet {


	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		//商品删除传入pid
		String pid=request.getParameter("pid");
		productservice ps=new productservice();
		try {
			ps.delete(pid);
			request.getRequestDispatcher("/productfindallservlet").forward(request, response);
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}


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

		doGet(request,  response);
	}

}

public void delete(String pid) throws SQLException {
		// 业务层删除商品的方法
		productdao pd=new productdao();
		pd.delete(pid);
	}

public void delete(String pid) throws SQLException {
		// DAO中删除商品的方法
		QueryRunner qr=new QueryRunner(c3p0tool.getDataSource());
		String sql="delete from product where pid=?";
		qr.update(sql,pid);
	}

package product;

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

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

public class productdeleteallservlet extends HttpServlet {

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		//接收多个ID
		String[] ids=request.getParameterValues("ids");
		productservice ps=new productservice();
		ps.deleteall(ids);
		request.getRequestDispatcher("/productfindallservlet").forward(request, response);
	}

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

		doGet( request,  response);
	}

}

public void deleteall(String[] ids)  {
		// 业务层删除所有商品的方法
		Connection con = c3p0tool.getConnection();
		try {
			con.setAutoCommit(false);//调用事物同时删除
			productdao pd=new productdao();


			for(String id:ids){
				pd.delete(con,id);	
			}
			DbUtils.commitAndCloseQuietly(con);//提交
		} catch (Exception e) {
			// 回滚
			DbUtils.rollbackAndCloseQuietly(con);
		}
	}

public void delete(Connection con, String id) throws SQLException {
		// TODO Auto-generated method stub
		QueryRunner qr=new QueryRunner();
		String sql="delete from product where pid=?";
		qr.update(con,sql,id);
	}

public void delete(Connection con, String id) throws SQLException {
		// TODO Auto-generated method stub
		QueryRunner qr=new QueryRunner();
		String sql="delete from product where pid=?";
		qr.update(con,sql,id);
	}

package product;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.util.List;

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

public class productsearchservlet extends HttpServlet {
	/**
	 * 商品的模糊查询
	 */
	private static final long serialVersionUID = 1L;


	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		//接收数据
		request.setCharacterEncoding("UTF-8");
		String pname=request.getParameter("pname");
		productservice ps=new productservice();
		try {
			Listlist=ps.search(pname);//通过pname来查询
			request.setAttribute("list", list);//将list保存传给prolist.jsp
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		request.getRequestDispatcher("/html/prolist.jsp").forward(request, response);

	}


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

	}

}

public List search(String pname) throws SQLException {
		// 业务层查询商品
		productdao pd=new productdao();
		return pd.search(pname);
	}

public List search(String pname) throws SQLException {
		// DAO中查询商品
		QueryRunner qr=new QueryRunner(c3p0tool.getDataSource());
		String sql="select *from product where pname like ? order by pdate desc";
		List p=qr.query(sql, new BeanListHandler(product.class),"%"+pname+"%");
		return p;
	}

package product;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.util.List;

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

public class productfindbypageservlet extends HttpServlet {
	/*
	 * 分页查询商品的servlet
	 * @see javax.servlet.http.HttpServlet#doGet(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
	 */

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		//接收数据
		int currentpage=Integer.parseInt(request.getParameter("currentpage"));
		//调用业务层处理数据
		productservice ps=new productservice();
		try {
			pagebean pb=ps.findbypage(currentpage);
			//将写好的数据保存起来
			request.setAttribute("pb", pb);
			request.getRequestDispatcher("/html/productpage.jsp").forward(request, response);
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}


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

}

package product;

import java.util.List;

/*
 *封装分页数据的JAVABEAN 
 */
public class pagebean {
	private int currpage;//当前页数
	private int totalcount;//总记录数
	private int pagesize;//每页的记录数
	private Listlist;//每页的数据集合
	private int totalpage;
	public int getCurrpage() {
		return currpage;
	}
	public void setCurrpage(int currpage) {
		this.currpage = currpage;
	}
	public int getTotalcount() {
		return totalcount;
	}
	public void setTotalcount(int totalcount) {
		this.totalcount = totalcount;
	}
	public int getPagesize() {
		return pagesize;
	}
	public void setPagesize(int pagesize) {
		this.pagesize = pagesize;
	}
	public List getList() {
		return list;
	}
	public void setList(List list) {
		this.list = list;
	}
	public int getTotalpage() {
		return totalpage;
	}
	public void setTotalpage(int totalpage) {
		this.totalpage = totalpage;
	}

}

public pagebean findbypage(int currentpage) throws SQLException {
		// 业务层分页查询
		pagebean pb=new pagebean();
		//设置当前页数
		pb.setCurrpage(currentpage);
		//设置每页显示的最大记录
		int pagesize=3;
		pb.setPagesize(pagesize);
		productdao pd=new productdao();
		//将开始序号和pagesize传入DAO中
		int begin=(currentpage-1)*pagesize;
		Listlist=pd.findbypage(begin,pagesize);//DAO中返回一个list集合
		//设置list集合
		pb.setList(list);
		//设置总序列数
		int totalcount=pd.findcount();
		pb.setTotalcount(totalcount);
		double tc=(double)totalcount;
		double ps=(double)pagesize;
		//设置总页数
		int totalpage=(int) Math.ceil(tc/ps);
		pb.setTotalpage(totalpage);
		return pb;
	}

public List findbypage(int begin, int pagesize) throws SQLException {
		// 显示当前页的信息
		QueryRunner qr=new QueryRunner(c3p0tool.getDataSource());
		String sql="select * from product order by pdate desc limit ?,?";
		List list = qr.query(sql, new BeanListHandler(product.class),begin,pagesize);
		return list;
	}

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
	String path = request.getContextPath();
%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>




















	
商品的列表页面
	

		
				

			

				
名称
					   
					 
			

				

				
商品序号
				
商品名称
				
商品价格
				
操作
			
			

					

					
${l.pid }
					
${l.pname}
					
${l.market_price}
					
修改 
						删除
				
			
			

				
  
					第${pb.currpage}/${pb.totalpage}页  

					总记录数${pb.totalcount}  当前页面记录数为${pb.pagesize}  
					
						
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