SPRING MVC3的@ResponseBody和ResponseEntity

SPRING MVC3的@ResponseBody使Controller直接返回数据,而不是直接指向具体的视图;同时通过MessageConverter和produces(如produces="text/plain;charset=UTF-8")可以返回各种格式的数据(XML,json,RSS,TEXT,字节流等);

见代码:

@ResponseBody可以直接返回结果,

而ResponseEntity 可以定义返回的HttpHeaders和HttpStatus,见文章最后的两张图

 

[java]  view plain  copy
  1. @RequestMapping(value="/response", method=RequestMethod.GET)  
  2. public class ResponseController {  
  3.   
  4. //http://127.0.0.1:8010/response/annotation  
  5.     @RequestMapping("/annotation")  
  6.     public @ResponseBody String responseBody() {  
  7.         return "The String ResponseBody";  
  8.     }  
  9.   
  10.   
  11.     @RequestMapping("/charset/accept")  
  12.     public @ResponseBody String responseAcceptHeaderCharset() {  
  13.         return "\u3053\u3093\u306b\u3061\u306f\u4e16\u754c\uff01 (\"Hello world!\" in Japanese)";  
  14.     }  
  15.   
  16. //http://127.0.0.1:8010/response/charset/produce  
  17.     @RequestMapping(value="/charset/produce", produces="text/plain;charset=UTF-8")  
  18.     public @ResponseBody String responseProducesConditionCharset() {  
  19.         return "\u3053\u3093\u306b\u3061\u306f\u4e16\u754c\uff01 (\"Hello world!\" in Japanese)";  
  20.     }  
  21.   
  22. //http://127.0.0.1:8010/response/entity/status  
  23.     @RequestMapping("/entity/status")  
  24.     public ResponseEntity<String> responseEntityStatusCode() {  
  25.         return new ResponseEntity<String>("The String ResponseBody with custom status code (403 Forbidden)",  
  26.                 HttpStatus.FORBIDDEN);  
  27.     }  
  28.   
  29. //http://127.0.0.1:8010/response/entity/headers  
  30.     @RequestMapping("/entity/headers")  
  31.     public ResponseEntity<String> responseEntityCustomHeaders() {  
  32.         HttpHeaders headers = new HttpHeaders();  
  33.         headers.setContentType(MediaType.TEXT_PLAIN);  
  34.      return new ResponseEntity<String>("The String ResponseBody with custom header Content-Type=text/plain",  
  35.                 headers, HttpStatus.OK);  
  36.     }  
  37.   
  38. }  

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转载自blog.csdn.net/ly199108171231/article/details/52953699