editbook.java

来自「网上购书系统 采用jsp+servlet+sql2000」· Java 代码 · 共 67 行

package servlet;

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

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

import base.DaoBase;
import bean.Book;


public class EditBook extends HttpServlet {

	@Override
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		int id=Integer.parseInt(request.getParameter("id"));
		DaoBase daobase=new DaoBase();		
		Connection conn=daobase.getConn();
		ArrayList arraylist=new ArrayList();
		try{
			String sql="select * from book where id=?";
			PreparedStatement psta=conn.prepareCall(sql);
			psta.setInt(1, id);
			ResultSet rest=psta.executeQuery();
						
			while(rest.next()){
				
				Book book=new Book();
				
				book.setId(rest.getInt(1));
				book.setBookname(rest.getString(2));
				book.setAuthor(rest.getString(3));
				book.setPublish(rest.getString(4));
				book.setBooknum(rest.getString(5));
				book.setContext(rest.getString(6));
				book.setPrice(rest.getFloat(7));
				book.setAmount(rest.getInt(8));
				book.setPicture(rest.getString(9));
				
				arraylist.add(book);
			}
			rest.close();
			psta.close();
		}catch(Exception ex){
			ex.printStackTrace();
		}finally{
			daobase.closeConn();
		}
		request.setAttribute("arraylist", arraylist);
		request.getRequestDispatcher("book.jsp").forward(request, response);
	}

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

}