RestTemplate之POST资源及GET资源

秒速五厘米 2022-05-15 02:53 106阅读 0赞

[https://blog.csdn.net/itguangit/article/details/78825505][https_blog.csdn.net_itguangit_article_details_78825505]

[https://www.cnblogs.com/tomcatandjerry/p/5899722.html][https_www.cnblogs.com_tomcatandjerry_p_5899722.html]

通过RestTemplate可以进行http接口的调用，例如如下是POST方式：

public ResponseEntity<JsonNode> Post(String url, Map<String, Object> params, HttpHeaders headers){
    
            org.apache.commons.httpclient.HttpMethod httpMethod = new PostMethod(url);
            headers.setContentType(MediaType.APPLICATION_JSON);
            httpMethod.getParams().setParameter(
                    HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler(3, false));
    
            HttpEntity<Map<String, Object>> entity = new HttpEntity<>(params, headers);
            logger.info("addRole entity : " + entity);
            logger.info("addRole data : " + restTemplate.postForEntity(url, entity, JsonNode.class));
            return restTemplate.postForEntity(url, entity, JsonNode.class);
    
        }

GET方式（这有个坑，就是getForEntity方法并不能携带请求头信息，因此，对于需要BA认证的REST资源获取，使用execute方法）：

public ResponseEntity<JsonNode> Get(String url, HttpHeaders headers){
    
            org.apache.commons.httpclient.HttpMethod httpMethod = new GetMethod(url);
            httpMethod.getParams().setParameter(
                    HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler(3, false));
            HttpEntity entity = new HttpEntity(headers);
    
            return restTemplate.exchange(url, HttpMethod.GET, entity, JsonNode.class );
    
        }

[https_blog.csdn.net_itguangit_article_details_78825505]: https://blog.csdn.net/itguangit/article/details/78825505
[https_www.cnblogs.com_tomcatandjerry_p_5899722.html]: https://www.cnblogs.com/tomcatandjerry/p/5899722.html