[GitHub] [servicecomb-java-chassis] sunjinghan7331 edited a comment on issue #1503: 使用restTemplate调用provider接口时如何设置请求头信息

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sunjinghan7331 edited a comment on issue #1503: 使用restTemplate调用provider接口时如何设置请求头信息
URL: https://github.com/apache/servicecomb-java-chassis/issues/1503#issuecomment-569602813
 
 
   > 我写过的一个方法 你可参考下 /**
   > * @param url 请求地址
   > * @param bodyParam 请求体
   > * @param headerParam 头部信息
   > * @param rClass 返回体类型
   > * @param 请求体类型
   > * @param 返回体类型
   > * @return 返回结果
   > */
   > public <T, R> R doPost(String url, T bodyParam, Map<String, String> headerParam, Class rClass) {
   > 
   > ```
   >     if (null == rClass || StringUtils.isEmpty(url)) {
   >         throw new ExecuteFailedResponse("url is empty or restTemplate is null.");
   >     }
   >     HttpHeaders requestHeaders = new HttpHeaders();
   >     if (null != headerParam) {
   >         headerParam.entrySet().forEach(entrySet -> requestHeaders.add(entrySet.getKey(), entrySet.getValue()));
   >     }
   >     HttpEntity<T> requestEntity = new HttpEntity<T>(bodyParam, requestHeaders);
   >     ResponseEntity<Object> response = restTemplate.exchange(url, HttpMethod.POST, requestEntity, Object.class);
   > 
   >     return transforObjet(rClass, response.getBody());
   > }
   > ```
   
   我使用了你的方法，可以得到正确的返回数据，但是我无法获得这些数据。详细说明一下，在我的provider工程中，我以
   TenantResponse tenant = new TenantResponse();
   tenant.setUsername("username");
   tenant.setPassword("password");
   return Response.ok().entity(tenant).build();
   作为我的接口返回值，Response是javax.ws.rs.core中的类。
   
   在我的consumer中调用此接口，
   String token = "Basic tl3JfTTNKkii42th4b/IjA==";
           HttpHeaders requestHeaders = new HttpHeaders();
           requestHeaders.add("Authorization", token);
           HttpEntity entity = new HttpEntity(requestHeaders);
           ResponseEntity<TenantResponse> response = restTemplate.exchange("cse://user-mgmt-be/v1/users/userId", HttpMethod.GET, entity, TenantResponse.class);
   System.out.prinln(response .getBody().getUsername());
   
   由于consumer与provider是两个不同的微服务，所以TenantResponse类是在两个微服务中分别定义的，但是具有同样的字段。不过在response.getBody()时提示ClassCastException，provider的TenantResponse不能转化为consumer的TenantResponse，请问应该如何解决？

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