RestTemplate post请求返回状态码415

电玩女神 2023-06-21 14:21 23阅读 0赞

**背景：**

跨模块通过post请求调用指定接口，返回415

**415状态码解释：**

Unsupported Media Type

对于当前请求的方法和所请求的资源，请求中提交的实体并不是服务器中所支持的格式，因此请求被拒绝

**错误日志：**

org.springframework.web.client.HttpClientErrorException: 415 null  
atorg.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:86)  
at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:708)

**功能错误代码和正常代码比对**

**异常请求返回415:**

RestTemplate restTemplate = new RestTemplate();
    String url = "http://172.16.17.82/portal/zcm-cmdb/remote/exec";
     String cmd = "mkdir -p /tmp/lushuan/test5";
    // 1、异常请求返回 415
     HttpHeaders headers = new HttpHeaders();
     MultiValueMap<String, String> map= new LinkedMultiValueMap<String, String>();
     map.add("host", "172.16.24.220");
     map.add("user", "root");
     map.add("cmd", cmd);
    HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<MultiValueMap<String, String>>(map, headers);
    Object data = restTemplate.postForObject(url,request,Object.class);
    LOGGER.info("TestRestTemplate testInstallCollectdByRemote data = {}", data);

**正常代码演示1:**

RestTemplate restTemplate = new RestTemplate();
    String url = "http://172.16.17.82/portal/zcm-cmdb/remote/exec";
    String cmd = "mkdir -p /tmp/lushuan/test6";
    Map<String, String> map = new HashMap<>();
    map.put("host","172.16.24.220");
    map.put("user","root");
    map.put("cmd",cmd);
    HttpHeaders headers = new HttpHeaders();
    headers.setContentType(MediaType.APPLICATION_JSON);
    HttpEntity<Map<String, String>> request = new HttpEntity<>(map, headers);
    JSONObject data = restTemplate.postForObject(url,request, JSONObject.class);
    LOGGER.info("TestRestTemplate testInstallCollectdByRemote data = {}", data);

** 正常代码演示2:**

RestTemplate restTemplate = new RestTemplate();
    String url = "http://172.16.17.82/portal/zcm-cmdb/remote/exec";
    String cmd = "mkdir -p /tmp/lushuan/test7";
    Map<String, String> map = new HashMap<>();
    map.put("host","172.16.24.220");
    map.put("user","root");
    map.put("cmd",cmd);
    // ParameterizedTypeReference 该类的目的是启用捕获和传递泛型
    ParameterizedTypeReference<String> typeRef = new ParameterizedTypeReference<String>() {
    };
    JSONObject createDbJsonObject = JSONObject.fromObject(map);
    HttpEntity<JSONObject> entityPost = new HttpEntity<JSONObject>(createDbJsonObject);
    ResponseEntity<String> createDbResponse = restTemplate.exchange(url, HttpMethod.POST, entityPost,typeRef);
    HttpStatus statusCode = createDbResponse.getStatusCode();
    LOGGER.info("TestRestTemplate testInstallCollectdByRemote createDbResponse = {}", createDbResponse);
    LOGGER.info("TestRestTemplate testInstallCollectdByRemote statusCode = {}", statusCode);

两段代码的实现方式都可以，推荐第二种，可以获取返回的状态码，是否跨域等信息。