Controller：package **.web.controller;import java.io.IOException;import java.io.PrintWriter;import java.util.ArrayList;import java.util.List;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.http.HttpRequest;import org.apache.http.HttpResponse;import org.apache.log4j.Logger;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.servlet.ModelAndView;import com.google.gson.JsonObject;import com.hunantv.ott.loganalysis.persistence.beans.TestBean;/** * this class just for example ,please read spring reference in detail. *  * just for controller use case demo by xiaohelong */import dwz.business.info.News;import dwz.business.info.NewsType;import dwz.persistence.BaseConditionVO;import dwz.web.BaseController;@Controllerpublic class OttControlerTest extends BaseController{	static Logger log = Logger.getLogger(			OttControlerTest.class.getName());	@RequestMapping("/Test")	@ResponseBody	public TestBean  test (){	log.debug("Test function");	TestBean testBean=new TestBean();	testBean.setName("haha");		return testBean;	}		@RequestMapping("/TestList")	@ResponseBody	public List
    
       testList (){	log.debug("TestList function");	List
     
       testBeanList=new ArrayList
      
       ();	TestBean testBean1=new TestBean();	testBean1.setName("haha");	TestBean testBean2=new TestBean();	testBean2.setName("hehe");	testBeanList.add(testBean1);	testBeanList.add(testBean2);		return testBeanList;	}		@RequestMapping("/TestJSONObject")		public void  testReturrnJSONWithoutBean(HttpServletRequest request,HttpServletResponse response) throws IOException{		log.debug("TestJSONObject function");		response.setContentType("application/json");		 response.setCharacterEncoding("UTF-8");		PrintWriter writer=response.getWriter();		JsonObject jsonObject=new JsonObject();		jsonObject.addProperty("name","hehe jsonobject");		writer.println(jsonObject.toString());		writer.close();		}	@RequestMapping("/TestReturnPage")	@ResponseBody	public String  testReturrnPage(){		log.debug("TestReturnPage");			return "/testpage";		}			/**	 * The difference between model and modelandview is just sematic	 * */ 	@RequestMapping("/TestReturnModel")	public String  testReturnModel(Model model){		log.debug("testReturrnModel");		model.addAttribute("testmodel", "hello model");			return "testpage";		}	/**	 * The difference between model and modelandview is just sematic	 * */ 	@RequestMapping("/TestReturnModelAndView")	public ModelAndView  testReturnModelAndView(){		log.debug("testReturrnModel");		ModelAndView mav = new ModelAndView("testpage");		mav.addObject("testmodel", "hello test model");			return mav;		}		/*	@RequestMapping("")	public String list(BaseConditionVO vo, Model model) {		List
       
         newsList = newsMgr.searchNews(vo);		int totalCount = newsMgr.searchNewsNum(vo);		vo.setTotalCount(totalCount);		model.addAttribute("newsTypes", NewsType.values());		model.addAttribute("newsList", newsList);		model.addAttribute("vo", vo);		return "/management/news/list";	}*/}Class TestBean:package **.persistence.beans;public class TestBean {	public String getName() {		return name;	}	public void setName(String name) {		this.name = name;	}	String name;}