orderservlet.java

来自「网上购书系统 采用jsp+servlet+sql2000」· Java 代码 · 共 68 行

package servlet;

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

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 base.DaoBase;
import bean.Book;
import bean.User;

public class OrderServlet extends HttpServlet {

	@Override
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		DaoBase db=new DaoBase();
		Book sb=new Book();
		HttpSession hs=request.getSession();
		User ub=(User)hs.getAttribute("user");
	
		Connection conn=db.getConn();
		int id=Integer.parseInt(request.getParameter("id"));
		String sqls="select bookname,price from book where id=?";
		try {
			PreparedStatement ps=conn.prepareStatement(sqls);
			ps.setInt(1, id);
			ResultSet rs=ps.executeQuery();
			while(rs.next())
			{
				sb.setBookname(rs.getString(1));
				sb.setPrice(rs.getInt(2));
			}
			String sqla="insert into [order] values(?,?,?,1)";

			PreparedStatement ps1=conn.prepareStatement(sqla);		
			ps1.setString(1, sb.getBookname());
			ps1.setString(2, ub.getUsername());
			ps1.setFloat(3, sb.getPrice());
			ps1.executeUpdate();
			rs.close();
			ps.close();
			ps1.close();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		db.closeConn();
		
		request.getRequestDispatcher("order").forward(request, response);
	}
	
	@Override
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doGet(request, response);
	}

}