ajax经典demo－初学者的好东西

package com.newer.action; import com.newer.ajax.ZipCode; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.struts.action.Action; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; public class ZipCodeAction extends Action { @Override public ActionForward execute(ActionMapping arg0, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { //设置客户机对数据不进行缓存 response.setHeader("Cache-Control","no-store"); response.setHeader("Pragrma","no-cache"); response.setDateHeader("Expires",0); //取得请求参数值 String state=new String(request.getParameter("state") .getBytes("ISO-8859-1"),"UTF-8"); String city=new String(request.getParameter("city") .getBytes("ISO-8859-1"),"UTF-8"); //调用服务器业务方法 String zipCode=ZipCode.getZipCode(state,city); System.out.println(state+":"+city+":"+zipCode); //向客户机写回响应 response.getWriter().print(zipCode); return null; } }