[GitHub] [servicecomb-java-chassis] liubao68 edited a comment on issue #1278: cse 下载的sdk demo怎么用responseEntity返回自定义的headers和httpstatus

[GitBox <gi...@apache.org>]

liubao68 edited a comment on issue #1278: cse 下载的sdk demo怎么用responseEntity返回自定义的headers和httpstatus
URL: https://github.com/apache/servicecomb-java-chassis/issues/1278#issuecomment-515639201
 
 
   可以的
   ```
     @ResponseHeaders({@ResponseHeader(name = "h1", response = String.class),
         @ResponseHeader(name = "h2", response = String.class)})
     @RequestMapping(path = "/responseEntity", method = RequestMethod.POST)
     public ResponseEntity<Date> responseEntity(InvocationContext c1, @RequestAttribute("date") Date date) {
       HttpHeaders headers = new HttpHeaders();
       headers.add("h1", "h1v " + c1.getContext().get(Const.SRC_MICROSERVICE));
   
       InvocationContext c2 = ContextUtils.getInvocationContext();
       headers.add("h2", "h2v " + c2.getContext().get(Const.SRC_MICROSERVICE));
   
       return new ResponseEntity<>(date, headers, HttpStatus.ACCEPTED);
     }
   ```
   
   需要注意ServiceComb是“编译时语义”, 即接口声明的时候，需要明确其语义。 和Spring MVC是有些差异的。
   
   相关例子：
   https://docs.servicecomb.io/java-chassis/zh_CN/general-development/error-handling.html
   https://github.com/apache/servicecomb-java-chassis/blob/master/integration-tests/
   
   与Spring MVC的差异说明：
   https://docs.servicecomb.io/java-chassis/zh_CN/build-provider/springmvc.html
   https://docs.servicecomb.io/java-chassis/zh_CN/build-provider/interface-constraints.html
   
   编译时语义的一些背景：
   https://zhuanlan.zhihu.com/p/75348817

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