org.springframework.web.client.HttpClientErrorException: 400 错误的 PUT 请求

Question

I have been trying to make consume an API with the PUT verb using restTemplate. I have the following code

 RestTemplate restTemplate = new RestTemplate();
 HttpHeaders headers = new HttpHeaders();
 headers.setContentType(MediaType.APPLICATION_JSON_UTF8);
 HttpEntity<String> entity = new HttpEntity<String>(jsonString,headers);
 restTemplate.put(Url+"/'"+id,entity, String.class);

My jsonString has the following content.

{ 
 "id":"asdfafaff-fsf3-4b1c-a7c4-13352252daa",
 "product":"MyProductName",
 "Organization":"my company name test",
 "Organizationid":"tert122Teq-rtq-q556trt-qtqtqt3-131rtqtqt",
 "ProductProperties":"Hc2",
 "Locations":{ 
   "results":[ 

    ]
 },
 "Status":"Gone",
 "DisabledByType":null,
 "roles":null,
 "Url":"wwww.google.com",
 "Key":"xxxxxxxxxx",
 "Secret":"xxxxxxxxxxx",
 "Hash":"yyhhytyutyutuet",
 "validity":null,
 "Type":"basic",
 "Reason":null,
 "Barcodes":{ 
  "results":[ 
     "tetetetetetete"
   ]
 },
 "RelatedBarcodes":{ 
  "results":[ 

  ]
},
 "CustomizedFields":{ 
   "results":[ 

  ]
}}

Everything seems ok but I am receiving this error

HttpClientErrorException: 400 Bad Request.
` at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:94)
at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:79)
at org.springframework.security.oauth2.client.http.OAuth2ErrorHandler.handleError(OAuth2ErrorHandler.java:172)
at org.springframework.web.client.ResponseErrorHandler.handleError(ResponseErrorHandler.java:63)
at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:730)
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:688)
at org.springframework.security.oauth2.client.OAuth2RestTemplate.doExecute(OAuth2RestTemplate.java:128)
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:644)
at org.springframework.web.client.RestTemplate.put(RestTemplate.java:459)`

What could be the problem?

Answer 1

It is impossible to indicate what is the exact problem when we don't know the API you're trying to consume.

HTTP status 400 means that the server was unable to process the request sent by you due to invalid syntax. It is very generic message and there may be countless reasons behind it.

You have to figure it out by yourself what exactly causes this response. You can achieve it by looking into received response's body. Since you have not declared which ResponseErrorHandler you want to use, the default one ( DefaultResponseErrorHandler ) has been applied. Turn on the debug mode and put some breakpoints on method public void handleError(ClientHttpResponse response) . There you should be able to get more details from response on what went wrong and fix your request accordingly.