Spring RestTemplate POST Request with URL encoded data

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Spring RestTemplate POST Request with URL encoded data

  1. Spring RestTemplate POST Request with URL encoded data

    I think the problem is that when you try to send data to server didn't set the content type header which should be one of the two: “application/json” or “application/x-www-form-urlencoded” . In your case is: “application/x-www-form-urlencoded” based on your sample params (name and color). This header means “what type of data my client sends to server”.

  2. Spring RestTemplate POST Request with URL encoded data

    I think the problem is that when you try to send data to server didn't set the content type header which should be one of the two: “application/json” or “application/x-www-form-urlencoded” . In your case is: “application/x-www-form-urlencoded” based on your sample params (name and color). This header means “what type of data my client sends to server”.

Solution 1

I think the problem is that when you try to send data to server didn’t set the content type header which should be one of the two: “application/json” or “application/x-www-form-urlencoded” . In your case is: “application/x-www-form-urlencoded” based on your sample params (name and color). This header means “what type of data my client sends to server”.

RestTemplate restTemplate = new RestTemplate();

HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
headers.add("PRIVATE-TOKEN", "xyz");

MultiValueMap<String, String> map = new LinkedMultiValueMap<>();
map.add("name","feature");
map.add("color","#5843AD");

HttpEntity<MultiValueMap<String, String>> entity = new HttpEntity<>(map, headers);

ResponseEntity<LabelCreationResponse> response =
    restTemplate.exchange("https://foo/api/v3/projects/1/labels",
                          HttpMethod.POST,
                          entity,
                          LabelCreationResponse.class);

Original Author Nikolay Rusev Of This Content

Solution 2

You need to set the Content-Type to application/json. Content-Type has to be set in the request. Below is the modified code to set the Content-Type

final String uri = "https://someserver.com/api/v3/projects/1/labels";
String input = "US";
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
headers.add("PRIVATE-TOKEN", "xyz");
HttpEntity<String> request = new HttpEntity<String>(input, headers);
ResponseEntity<LabelCreationResponse> response = restTemplate.postForObject(uri, request,  LabelCreationResponse.class);

Here, HttpEntity is constructed with your input i.e “US” and with headers.
Let me know if this works, if not then please share the exception.
Cheers!

Original Author VijayD Of This Content

Solution 3

It may be a Header issue check if the header is a Valid header, are u referring to “BasicAuth” header?

HttpHeaders headers = new HttpHeaders();
headers.add("Content-Type", MediaType.APPLICATION_FORM_URLENCODED.toString());
headers.add("Accept", MediaType.APPLICATION_JSON.toString()); //Optional in case server sends back JSON data
    
MultiValueMap<String, String> requestBody = new LinkedMultiValueMap<String, String>();
requestBody.add("name", "feature");
requestBody.add("color", "#5843AD");
    
HttpEntity formEntity = new HttpEntity<MultiValueMap<String, String>>(requestBody, headers);
    
ResponseEntity<LabelCreationResponse> response = 
   restTemplate.exchange("https://example.com/api/request", HttpMethod.POST, formEntity, LabelCreationResponse.class);

Original Author Amit Kumar Lal Of This Content

Solution 4

my issue, the MessageConverters contains other converters may converts then entity to json (like FastJsonHttpMessageConverter). So i added the FormHttpMessageConverter to ahead and it works well.

<T> JuheResult<T> postForm(final String url, final MultiValueMap<String, Object> body) {
    HttpHeaders headers = new HttpHeaders();
    headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
    HttpEntity<MultiValueMap<String, Object>> requestEntity = new HttpEntity<>(body, headers);
    return exchange(url, HttpMethod.POST, requestEntity);
}

<T> JuheResult<T> exchange(final String url, final HttpMethod method, final HttpEntity<?> requestEntity) {
    ResponseEntity<JuheResult<T>> response = restTemplate.exchange(url, method, requestEntity,
            new JuheResultTypeReference<>());
    logger.debug("调用结果 {}", response.getBody());
    return response.getBody();
}

public JuheSupplierServiceImpl(RestTemplateBuilder restTemplateBuilder) {
    Duration connectTimeout = Duration.ofSeconds(5);
    Duration readTimeout = Duration.ofSeconds(5);

    restTemplate = restTemplateBuilder.setConnectTimeout(connectTimeout).setReadTimeout(readTimeout)
            .additionalInterceptors(interceptor()).build();
    restTemplate.getMessageConverters().add(0, new FormHttpMessageConverter());
}

fastjson prevent resttemplate converting other mediaTypes other than json

Original Author ccfish Of This Content

Conclusion

So This is all About This Tutorial. Hope This Tutorial Helped You. Thank You.

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Siddharth

I am an Information Technology Engineer. I have Completed my MCA And I have 4 Year Plus Experience, I am a web developer with knowledge of multiple back-end platforms Like PHP, Node.js, Python and frontend JavaScript frameworks Like Angular, React, and Vue.

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