zipcodeservlet.java

一个比较好的ajax的学习原吗和资料,在自己机子上可以实现功能

package com.witbridge.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Map;

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

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

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

	@Override
	protected void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		
		Map<String, String> datas = new HashMap<String, String>();
		datas.put("230000", "Hefei,Anhui");
		datas.put("063000", "Tangshan,Hebei");
		datas.put("200000", "Shanghai,Shanghai");
		
		String zipcode = request.getParameter("zipcode");
		String data = datas.get(zipcode);
		if (data == null) {
			data = "Error,Error";
		}
		
		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		out.print(data);
		out.flush();
		out.close();
	}

}