ajax技术在ssh中的应用[2]

ajax技术在ssh中的应用[2]  

   第二种情况：不用dwr框架，用提交到servlet来处理

    (这是一个更新宠物的相关信息，局部涮新)

 

　　1. 提交页面中，如下面jsp文件中

 

 

 

 

 

 

 

 

 

 

   2. 处理页面中

 

package com.lxt008.service;

import java.io.IOException;
import java.io.PrintWriter;

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

importorg.springframework.web.context.WebApplicationContext;
importorg.springframework.web.context.support.WebApplicationContextUtils;

importcom.lxt008.hibernate.po.PetInfo;

public class DynaUpdatePetProperty extendsHttpServlet {

 PetInfo pi;
 WebApplicationContext waCtx;
 
 private static final long serialVersionUID =1L;

 
 public DynaUpdatePetProperty() {
  super();
 }

 
 public void destroy() {
  super.destroy(); // Just puts"destroy" string in log
  // Put your code here
 }

 
 public void doGet(HttpServletRequest request,HttpServletResponse response)
   throwsServletException, IOException {
  System.out.println("IndoGet()");
  //必须获取Web应用上下文,直接new创建piDAO对象是不行的
  //pdDAO=new PetInfoDAO();
  try
  {
   waCtx=WebApplicationContextUtils.getWebApplicationContext(getServletContext());
   System.out.println(waCtx.toString());
   //pdDAO=(IPetInfoDAO)waCtx.getBean("pdDAO"); 
  }
  catch(Exception e)
  {
   e.printStackTrace();
  }
  
  request.setCharacterEncoding("UTF-8");    
  //String petId =request.getParameter("petId");
  HttpSessionsession=request.getSession();
  StringpetId=(String)session.getAttribute("petId");  
  String action =request.getParameter("action");
  System.out.println("Pet ID:"+petId);
  System.out.println("action:"+action);       
       
  
  //目的是增加事务功能
  DynaUpdatePetPropertyServicedynaUpdatePetPropertyService=
   (DynaUpdatePetPropertyService)waCtx.getBean("dynaUpdatePetPropertyService");
  pi=dynaUpdatePetPropertyService.getSinglePet(petId);
     
       System.out.println(pi.toString());
       
       response.setContentType("text/xml; charset=UTF-8");
       response.setHeader("Cache-Control","no-cache");       
       PrintWriter out = response.getWriter();
       //产生XML响应
       out.println("");
       
       //对不同按钮进行处理
       if(action.equals("ws"))
       {    
        //System.out.println("In ws()");
           //力量加30
        pi.setPetStrength(newInteger(pi.getPetStrength().intValue()+30));        
        out.println(""+pi.getPetStrength()+"");
        
        pi.setPetCute(newInteger(pi.getPetCute().intValue()));
        out.println(""+pi.getPetCute()+"");
        
        pi.setPetLove(newInteger(pi.getPetLove().intValue()));
        out.println(""+pi.getPetLove()+"");
        
        dynaUpdatePetPropertyService.save(pi);
       }
       else
       if(action.equals("story"))
       {
        //System.out.println("In story()");
        //力量减5
        pi.setPetStrength(newInteger(pi.getPetStrength().intValue()-5));
        out.println(""+pi.getPetStrength()+"");
        
        //
        pi.setPetCute(newInteger(pi.getPetCute().intValue()+1));
        out.println(""+pi.getPetCute()+"");
        
        //
        pi.setPetLove(newInteger(pi.getPetLove().intValue()+3));
        out.println(""+pi.getPetLove()+"");
        
        dynaUpdatePetPropertyService.save(pi);
       }
       else
       if(action.equals("game"))
       {
        //System.out.println("In game()");
        //力量减5
        pi.setPetStrength(newInteger(pi.getPetStrength().intValue()-5));
        out.println(""+pi.getPetStrength()+"");
        
        //
        pi.setPetCute(newInteger(pi.getPetCute().intValue()+3));
        out.println(""+pi.getPetCute()+"");
        
        //
        pi.setPetLove(newInteger(pi.getPetLove().intValue()+1));
        out.println(""+pi.getPetLove()+"");
        
        dynaUpdatePetPropertyService.save(pi);
       }
     out.println("");
  out.close();
 }

 
 public void doPost(HttpServletRequest request,HttpServletResponse response)
   throwsServletException, IOException {

  doGet(request,response);
 }

 
 public void init() throws ServletException{
  // Put your code here
 }
}

 

最终效果如下　

 

（更多细节代码，欢迎和阿堂交流）