showdetialaction.java

一个购物网站

package dataDisposal;

import java.util.*;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class ShowDetialAction extends HttpServlet{
     public void doGet(HttpServletRequest request,HttpServletResponse response)
		throws ServletException,IOException{		
		HttpSession session=request.getSession(); 
		PrintWriter out=response.getWriter();
		
		String name=request.getParameter("userName");
		System.out.println("*************"+name);
				
		String goodId=request.getParameter("goodId");
		if(goodId==null){
			throw new IOException("ShowDetial_Action::doGet:goodId can't be null");
		}
		String sql="select * from goodsInfo where goodId='" + goodId +"'";
		Hashtable goodHash=null;
		GoodsListBean goodsListBean = new GoodsListBean();
		
		goodHash = goodsListBean.getHash(sql);
		
		if(goodHash==null){
			throw new IOException("ShowDetial_Action::doGet:goodHash is null :  goodId is not existed!");
		}
		session.setAttribute("goodInfo",goodHash);			
		//在使用完成后，必须注销掉			
		
		getServletConfig().getServletContext().getRequestDispatcher("/showDetial.jsp").forward(request,response);
			
	}

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