SpringMVC返回值的几种方式

以上为本人在写SpringMVC经常用到的几种方式，记录放在这里，备查。也希望能来到这里的人有用。

[java] view plain copy

print ?

1.       
2. /* 
3.  * This file is a spring controller return tester,so please do not delete this file 
4.  * created by xiaohelong 20140904  
5.  * email:[email protected]  
6.  */  
7. import java.io.IOException;  
8. import java.io.PrintWriter;  
9. import java.util.ArrayList;  
10. import java.util.List;  
11.   
12. import javax.servlet.http.HttpServletRequest;  
13. import javax.servlet.http.HttpServletResponse;  
14.   
15. import org.apache.log4j.Logger;  
16. import org.springframework.stereotype.Controller;  
17. import org.springframework.ui.Model;  
18. import org.springframework.web.bind.annotation.RequestMapping;  
19. import org.springframework.web.bind.annotation.ResponseBody;  
20. import org.springframework.web.servlet.ModelAndView;  
21.   
22. import com.google.gson.JsonObject;  
23.   
24. /** 
25.  * this class just for example ,please read spring reference in detail. 
26.  *  
27.  * just for controller use case demo by xiaohelong 
28.  */  
29. import dwz.business.info.News;  
30. import dwz.business.info.NewsType;  
31. import dwz.persistence.BaseConditionVO;  
32. import dwz.web.BaseController;  
33. @Controller  
34. public class OttControlerTest extends BaseController{  
35.     static Logger log = Logger.getLogger(  
36.             OttControlerTest.class.getName());  
37.     /** 
38.      *  
39.      * @return Bean 
40.      */  
41.     @RequestMapping(“/Test”)  
42.     @ResponseBody  
43.     public TestBean  test (){  
44.     log.debug(”Test function”);  
45.     TestBean testBean=new TestBean();  
46.     testBean.setName(”haha”);  
47.         return testBean;  
48.     }     
49.     /** 
50.      *  
51.      * @return Bean List 
52.      */  
53.     @RequestMapping(“/TestList”)  
54.     @ResponseBody  
55.     public List<TestBean>  testList (){  
56.     log.debug(”TestList function”);  
57.     List<TestBean> testBeanList=new ArrayList<TestBean>();  
58.     TestBean testBean1=new TestBean();  
59.     testBean1.setName(”haha”);  
60.     TestBean testBean2=new TestBean();  
61.     testBean2.setName(”hehe”);  
62.     testBeanList.add(testBean1);  
63.     testBeanList.add(testBean2);  
64.         return testBeanList;  
65.     }     
66.       
67.     /** 
68.      *  
69.      * @return JSON Data 
70.      */  
71.     @RequestMapping(“/TestJSONObject”)    
72.     public void  testReturrnJSONWithoutBean(HttpServletRequest request,HttpServletResponse response) throws IOException{  
73.         log.debug(”TestJSONObject function”);  
74.         response.setContentType(”application/json”);  
75.         response.setCharacterEncoding(”UTF-8”);  
76.         PrintWriter writer=response.getWriter();  
77.         JsonObject jsonObject=new JsonObject();  
78.         jsonObject.addProperty(”name”,“hehe jsonobject”);  
79.         writer.println(jsonObject.toString());  
80.         writer.close();  
81.         }  
82.       
83.     /** 
84.      *  
85.      * @return String 
86.      */   
87.     @RequestMapping(“/TestReturnPage”)  
88.     @ResponseBody  
89.     public String  testReturrnPage(){  
90.         log.debug(”TestReturnPage”);  
91.             return “/testpage”;  
92.         }     
93.       
94.     /** 
95.      * The difference between model and modelandview is just sematic 
96.      * */   
97.     /** 
98.      * @return JSON ModelAndView 
99.      */  
100.     @RequestMapping(“/TestReturnModel”)  
101.     public String  testReturnModel(Model model){  
102.         log.debug(”testReturrnModel”);  
103.         model.addAttribute(”testmodel”, “hello model”);  
104.             return “testpage”;  
105.         }  
106.     /** 
107.      * The difference between model and modelandview is just sematic 
108.      * */   
109.     /** 
110.      * @return JSON ModelAndView 
111.      */  
112.     @RequestMapping(“/TestReturnModelAndView”)  
113.     public ModelAndView  testReturnModelAndView(){  
114.         log.debug(”testReturrnModel”);  
115.         ModelAndView mav = new ModelAndView(“testpage”);  
116.         mav.addObject(”testmodel”, “hello test model”);  
117.             return mav;  
118.         }     
119. }  
120.   
121. <pre name=”code” class=“java”>    
122. /**  
123.      * 获取系统显示的菜单  
124.      *   
125.      * @param 无  
126.      * @return 返回JSON字符串，这是经过处理后的结构化树形数据。  
127.      */    
128.     @RequestMapping(value = “/getShowedMenus”, produces = “application/json; charset=utf-8”)    
129.     @ResponseBody    
130.     public String getShowedMenus() {            
131.         JsonArray menus=new JsonArray();    
132.         try{    
133.             menus=platformMenuService.getMenusForShow();    
134.         }catch(Exception e)    
135.         {    
136.             logger.error(e.toString());    
137.             e.printStackTrace();    
138.         }    
139.         return menus.toString();    
140.     }   
141.     /** 
142.      * 从远程数据中心中注销登录 
143.      * @param request 
144.      * @param response 
145.      * @return 返回逻辑值 
146.      */  
147.     @RequestMapping(“/logout”)  
148.     @ResponseBody  
149.     private boolean logout(HttpServletRequest request,HttpServletResponse response)  
150.     {  
151.      boolean retVal=false;  
152.      try{  
153.        
154.      }catch(Exception e){  
155.       logger.error(e.toString());  
156.      }  
157.         return retVal;  
158.     }  
159.     /** 
160.      * 本地数据中心登录至远程数据中心。 
161.      * @param datacenterId 
162.      * @return 返回是否登录成功 
163.      */  
164.     @RequestMapping(value=“/login”,produces = “application/json; charset=utf-8”)  
165.     @ResponseBody  
166.     public Boolean login(String dcId,HttpServletRequest request,HttpServletResponse response) {  
167.         logger.info(”datacenterId”+dcId);  
168.         dcId=”12”;  
169.         Boolean retVal=false;  
170.         try{  
171.          DatacatalogDatacenter dc=datacenterService.selectByPrimaryKey(dcId);  
172. String url=”http://localhost:8080/”+request.getContextPath()+“/rest/datacatalog/datacenter/server/login?&no=121”;  
173. String val=HttpUtils.HttpPost(url);  
174.     retVal=Boolean.parseBoolean(val);  
175. //retObject=new JSONObject(detail);  
176.         }catch(Exception e){  
177.          logger.error(e.toString());  
178.          e.printStackTrace();  
179.         }  
180.         return retVal;  
181.     }  

    
/*
 * This file is a spring controller return tester,so please do not delete this file
 * created by xiaohelong 20140904 
 * email:[email protected] 
 */
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.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;

/**
 * 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;
@Controller
public class OttControlerTest extends BaseController{
    static Logger log = Logger.getLogger(
            OttControlerTest.class.getName());
    /**
     * 
     * @return Bean
     */
    @RequestMapping("/Test")
    @ResponseBody
    public TestBean  test (){
    log.debug("Test function");
    TestBean testBean=new TestBean();
    testBean.setName("haha");
        return testBean;
    }   
    /**
     * 
     * @return Bean List
     */
    @RequestMapping("/TestList")
    @ResponseBody
    public List<TestBean>  testList (){
    log.debug("TestList function");
    List<TestBean> testBeanList=new ArrayList<TestBean>();
    TestBean testBean1=new TestBean();
    testBean1.setName("haha");
    TestBean testBean2=new TestBean();
    testBean2.setName("hehe");
    testBeanList.add(testBean1);
    testBeanList.add(testBean2);
        return testBeanList;
    }   

    /**
     * 
     * @return JSON Data
     */
    @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();
        }

    /**
     * 
     * @return String
     */ 
    @RequestMapping("/TestReturnPage")
    @ResponseBody
    public String  testReturrnPage(){
        log.debug("TestReturnPage");
            return "/testpage";
        }   

    /**
     * The difference between model and modelandview is just sematic
     * */ 
    /**
     * @return JSON ModelAndView
     */
    @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
     * */ 
    /**
     * @return JSON ModelAndView
     */
    @RequestMapping("/TestReturnModelAndView")
    public ModelAndView  testReturnModelAndView(){
        log.debug("testReturrnModel");
        ModelAndView mav = new ModelAndView("testpage");
        mav.addObject("testmodel", "hello test model");
            return mav;
        }   
}

<pre name="code" class="java">  
/** 
     * 获取系统显示的菜单 
     *  
     * @param 无 
     * @return 返回JSON字符串，这是经过处理后的结构化树形数据。 
     */  
    @RequestMapping(value = "/getShowedMenus", produces = "application/json; charset=utf-8")  
    @ResponseBody  
    public String getShowedMenus() {          
        JsonArray menus=new JsonArray();  
        try{  
            menus=platformMenuService.getMenusForShow();  
        }catch(Exception e)  
        {  
            logger.error(e.toString());  
            e.printStackTrace();  
        }  
        return menus.toString();  
    } 
    /**
     * 从远程数据中心中注销登录
     * @param request
     * @param response
     * @return 返回逻辑值
     */
    @RequestMapping("/logout")
    @ResponseBody
    private boolean logout(HttpServletRequest request,HttpServletResponse response)
    {
     boolean retVal=false;
     try{

     }catch(Exception e){
      logger.error(e.toString());
     }
        return retVal;
    }
    /**
     * 本地数据中心登录至远程数据中心。
     * @param datacenterId
     * @return 返回是否登录成功
     */
    @RequestMapping(value="/login",produces = "application/json; charset=utf-8")
    @ResponseBody
    public Boolean login(String dcId,HttpServletRequest request,HttpServletResponse response) {
        logger.info("datacenterId"+dcId);
        dcId="12";
        Boolean retVal=false;
        try{
         DatacatalogDatacenter dc=datacenterService.selectByPrimaryKey(dcId);
String url="http://localhost:8080/"+request.getContextPath()+"/rest/datacatalog/datacenter/server/login?&no=121";
String val=HttpUtils.HttpPost(url);
    retVal=Boolean.parseBoolean(val);
//retObject=new JSONObject(detail);
        }catch(Exception e){
         logger.error(e.toString());
         e.printStackTrace();
        }
        return retVal;
    }

            </div>

以上为本人在写SpringMVC经常用到的几种方式，记录放在这里，备查。也希望能来到这里的人有用。

[java] view plain copy

print ?

1.       
2. /* 
3.  * This file is a spring controller return tester,so please do not delete this file 
4.  * created by xiaohelong 20140904  
5.  * email:[email protected]  
6.  */  
7. import java.io.IOException;  
8. import java.io.PrintWriter;  
9. import java.util.ArrayList;  
10. import java.util.List;  
11.   
12. import javax.servlet.http.HttpServletRequest;  
13. import javax.servlet.http.HttpServletResponse;  
14.   
15. import org.apache.log4j.Logger;  
16. import org.springframework.stereotype.Controller;  
17. import org.springframework.ui.Model;  
18. import org.springframework.web.bind.annotation.RequestMapping;  
19. import org.springframework.web.bind.annotation.ResponseBody;  
20. import org.springframework.web.servlet.ModelAndView;  
21.   
22. import com.google.gson.JsonObject;  
23.   
24. /** 
25.  * this class just for example ,please read spring reference in detail. 
26.  *  
27.  * just for controller use case demo by xiaohelong 
28.  */  
29. import dwz.business.info.News;  
30. import dwz.business.info.NewsType;  
31. import dwz.persistence.BaseConditionVO;  
32. import dwz.web.BaseController;  
33. @Controller  
34. public class OttControlerTest extends BaseController{  
35.     static Logger log = Logger.getLogger(  
36.             OttControlerTest.class.getName());  
37.     /** 
38.      *  
39.      * @return Bean 
40.      */  
41.     @RequestMapping(“/Test”)  
42.     @ResponseBody  
43.     public TestBean  test (){  
44.     log.debug(”Test function”);  
45.     TestBean testBean=new TestBean();  
46.     testBean.setName(”haha”);  
47.         return testBean;  
48.     }     
49.     /** 
50.      *  
51.      * @return Bean List 
52.      */  
53.     @RequestMapping(“/TestList”)  
54.     @ResponseBody  
55.     public List<TestBean>  testList (){  
56.     log.debug(”TestList function”);  
57.     List<TestBean> testBeanList=new ArrayList<TestBean>();  
58.     TestBean testBean1=new TestBean();  
59.     testBean1.setName(”haha”);  
60.     TestBean testBean2=new TestBean();  
61.     testBean2.setName(”hehe”);  
62.     testBeanList.add(testBean1);  
63.     testBeanList.add(testBean2);  
64.         return testBeanList;  
65.     }     
66.       
67.     /** 
68.      *  
69.      * @return JSON Data 
70.      */  
71.     @RequestMapping(“/TestJSONObject”)    
72.     public void  testReturrnJSONWithoutBean(HttpServletRequest request,HttpServletResponse response) throws IOException{  
73.         log.debug(”TestJSONObject function”);  
74.         response.setContentType(”application/json”);  
75.         response.setCharacterEncoding(”UTF-8”);  
76.         PrintWriter writer=response.getWriter();  
77.         JsonObject jsonObject=new JsonObject();  
78.         jsonObject.addProperty(”name”,“hehe jsonobject”);  
79.         writer.println(jsonObject.toString());  
80.         writer.close();  
81.         }  
82.       
83.     /** 
84.      *  
85.      * @return String 
86.      */   
87.     @RequestMapping(“/TestReturnPage”)  
88.     @ResponseBody  
89.     public String  testReturrnPage(){  
90.         log.debug(”TestReturnPage”);  
91.             return “/testpage”;  
92.         }     
93.       
94.     /** 
95.      * The difference between model and modelandview is just sematic 
96.      * */   
97.     /** 
98.      * @return JSON ModelAndView 
99.      */  
100.     @RequestMapping(“/TestReturnModel”)  
101.     public String  testReturnModel(Model model){  
102.         log.debug(”testReturrnModel”);  
103.         model.addAttribute(”testmodel”, “hello model”);  
104.             return “testpage”;  
105.         }  
106.     /** 
107.      * The difference between model and modelandview is just sematic 
108.      * */   
109.     /** 
110.      * @return JSON ModelAndView 
111.      */  
112.     @RequestMapping(“/TestReturnModelAndView”)  
113.     public ModelAndView  testReturnModelAndView(){  
114.         log.debug(”testReturrnModel”);  
115.         ModelAndView mav = new ModelAndView(“testpage”);  
116.         mav.addObject(”testmodel”, “hello test model”);  
117.             return mav;  
118.         }     
119. }  
120.   
121. <pre name=”code” class=“java”>    
122. /**  
123.      * 获取系统显示的菜单  
124.      *   
125.      * @param 无  
126.      * @return 返回JSON字符串，这是经过处理后的结构化树形数据。  
127.      */    
128.     @RequestMapping(value = “/getShowedMenus”, produces = “application/json; charset=utf-8”)    
129.     @ResponseBody    
130.     public String getShowedMenus() {            
131.         JsonArray menus=new JsonArray();    
132.         try{    
133.             menus=platformMenuService.getMenusForShow();    
134.         }catch(Exception e)    
135.         {    
136.             logger.error(e.toString());    
137.             e.printStackTrace();    
138.         }    
139.         return menus.toString();    
140.     }   
141.     /** 
142.      * 从远程数据中心中注销登录 
143.      * @param request 
144.      * @param response 
145.      * @return 返回逻辑值 
146.      */  
147.     @RequestMapping(“/logout”)  
148.     @ResponseBody  
149.     private boolean logout(HttpServletRequest request,HttpServletResponse response)  
150.     {  
151.      boolean retVal=false;  
152.      try{  
153.        
154.      }catch(Exception e){  
155.       logger.error(e.toString());  
156.      }  
157.         return retVal;  
158.     }  
159.     /** 
160.      * 本地数据中心登录至远程数据中心。 
161.      * @param datacenterId 
162.      * @return 返回是否登录成功 
163.      */  
164.     @RequestMapping(value=“/login”,produces = “application/json; charset=utf-8”)  
165.     @ResponseBody  
166.     public Boolean login(String dcId,HttpServletRequest request,HttpServletResponse response) {  
167.         logger.info(”datacenterId”+dcId);  
168.         dcId=”12”;  
169.         Boolean retVal=false;  
170.         try{  
171.          DatacatalogDatacenter dc=datacenterService.selectByPrimaryKey(dcId);  
172. String url=”http://localhost:8080/”+request.getContextPath()+“/rest/datacatalog/datacenter/server/login?&no=121”;  
173. String val=HttpUtils.HttpPost(url);  
174.     retVal=Boolean.parseBoolean(val);  
175. //retObject=new JSONObject(detail);  
176.         }catch(Exception e){  
177.          logger.error(e.toString());  
178.          e.printStackTrace();  
179.         }  
180.         return retVal;  
181.     }  

    
/*
 * This file is a spring controller return tester,so please do not delete this file
 * created by xiaohelong 20140904 
 * email:[email protected] 
 */
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.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;

/**
 * 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;
@Controller
public class OttControlerTest extends BaseController{
    static Logger log = Logger.getLogger(
            OttControlerTest.class.getName());
    /**
     * 
     * @return Bean
     */
    @RequestMapping("/Test")
    @ResponseBody
    public TestBean  test (){
    log.debug("Test function");
    TestBean testBean=new TestBean();
    testBean.setName("haha");
        return testBean;
    }   
    /**
     * 
     * @return Bean List
     */
    @RequestMapping("/TestList")
    @ResponseBody
    public List<TestBean>  testList (){
    log.debug("TestList function");
    List<TestBean> testBeanList=new ArrayList<TestBean>();
    TestBean testBean1=new TestBean();
    testBean1.setName("haha");
    TestBean testBean2=new TestBean();
    testBean2.setName("hehe");
    testBeanList.add(testBean1);
    testBeanList.add(testBean2);
        return testBeanList;
    }   

    /**
     * 
     * @return JSON Data
     */
    @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();
        }

    /**
     * 
     * @return String
     */ 
    @RequestMapping("/TestReturnPage")
    @ResponseBody
    public String  testReturrnPage(){
        log.debug("TestReturnPage");
            return "/testpage";
        }   

    /**
     * The difference between model and modelandview is just sematic
     * */ 
    /**
     * @return JSON ModelAndView
     */
    @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
     * */ 
    /**
     * @return JSON ModelAndView
     */
    @RequestMapping("/TestReturnModelAndView")
    public ModelAndView  testReturnModelAndView(){
        log.debug("testReturrnModel");
        ModelAndView mav = new ModelAndView("testpage");
        mav.addObject("testmodel", "hello test model");
            return mav;
        }   
}

<pre name="code" class="java">  
/** 
     * 获取系统显示的菜单 
     *  
     * @param 无 
     * @return 返回JSON字符串，这是经过处理后的结构化树形数据。 
     */  
    @RequestMapping(value = "/getShowedMenus", produces = "application/json; charset=utf-8")  
    @ResponseBody  
    public String getShowedMenus() {          
        JsonArray menus=new JsonArray();  
        try{  
            menus=platformMenuService.getMenusForShow();  
        }catch(Exception e)  
        {  
            logger.error(e.toString());  
            e.printStackTrace();  
        }  
        return menus.toString();  
    } 
    /**
     * 从远程数据中心中注销登录
     * @param request
     * @param response
     * @return 返回逻辑值
     */
    @RequestMapping("/logout")
    @ResponseBody
    private boolean logout(HttpServletRequest request,HttpServletResponse response)
    {
     boolean retVal=false;
     try{

     }catch(Exception e){
      logger.error(e.toString());
     }
        return retVal;
    }
    /**
     * 本地数据中心登录至远程数据中心。
     * @param datacenterId
     * @return 返回是否登录成功
     */
    @RequestMapping(value="/login",produces = "application/json; charset=utf-8")
    @ResponseBody
    public Boolean login(String dcId,HttpServletRequest request,HttpServletResponse response) {
        logger.info("datacenterId"+dcId);
        dcId="12";
        Boolean retVal=false;
        try{
         DatacatalogDatacenter dc=datacenterService.selectByPrimaryKey(dcId);
String url="http://localhost:8080/"+request.getContextPath()+"/rest/datacatalog/datacenter/server/login?&no=121";
String val=HttpUtils.HttpPost(url);
    retVal=Boolean.parseBoolean(val);
//retObject=new JSONObject(detail);
        }catch(Exception e){
         logger.error(e.toString());
         e.printStackTrace();
        }
        return retVal;
    }

            </div>