code_server/src/com/action/ShangjiaAction.java

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package com.action;

 
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 net.sf.json.JSONArray;  
import com.dao.ShangjiaDao;
import com.model.Shangjia;
import org.json.JSONObject;
import org.json.JSONException;


@SuppressWarnings("serial")
public class ShangjiaAction extends HttpServlet {

	
	protected void doPost(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		doGet(req, resp);
	}

	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {

		String method = req.getParameter("method");

		ShangjiaDao dao = new ShangjiaDao();
 
  
		if (method.equals("list")) {

			String type = req.getParameter("type");
		    
		    if (type != null && type.equals("json")) {
		    	
		    	JSONArray jsonArray  =  JSONArray.fromObject( dao.getAll(req.getParameter("id") , req.getParameter("f") )  );
		    	resp.setCharacterEncoding("gb2312");
		    	
		    	try {
		    		resp.getWriter().write(jsonArray.toString());
		    	} catch (IOException e) {
		    		e.printStackTrace();
		    	}
		    	return ;		    	
			}  else {
				getAll(req, dao);
				req.getRequestDispatcher("/shangjialist.jsp").forward(req, resp);
			}
		    
		} else if (   method.equals("goUpdate") ){

			String id = req.getParameter("id");

			req.setAttribute("map", dao.getObjectById(id) ); 
			req.getRequestDispatcher("/shangjia_update.jsp").forward(req, resp);