CODEWITHSUNDEEP
javajsonspringrestresttemplate
Muhammad Imran Tariq
Muhammad Imran Tariq

Reputation: 23352

Spring restTemplate issue in getting response

My rest server is generating response when I called it with rest client software. When I call it with resttemplate code mentioned above, then server generates response(print logs) but resttemplate does nothing(no next line executes after call) and prints internal error.

This is the method in my server

@ResponseBody
public ResponseEntity<Map<String, Object>> name(){......
...
return new ResponseEntity<Map<String, Object>>(messagebody, HttpStatus.OK);
}

This is the way I am calling it through restTemplate

ResponseEntity<Map> response1 = restTemplate.getForEntity(finalUrl.toString(), Map.class);

Upvotes: 12

Views: 17797

Answers (3)

Abhishek Singh
Abhishek Singh

Reputation: 17

you can Catch the HttpStatusCodeException from which you can get response in String . below code works for me.

restTemplate.postForObject( url, jsonRequest, ResponseData.class );
catch( HttpStatusCodeException codeException )
{
    String payload = codeException.getResponseBodyAsString();
    System.out.println( payload );

}

Upvotes: -1

user3193801
user3193801

Reputation: 93

this is a example that works for me

@RequestMapping(value = "/getParametros/{instancia}", method = RequestMethod.GET, produces = MediaType.TEXT_PLAIN_VALUE)
public ResponseEntity<String> getParametros(@PathVariable String instancia)
{
    LOG.debug("REST. Obteniendo parametros del servidor " + instancia);
    Map<String, String> mapa = parametrosService.getProperties(instancia);
    HttpHeaders headers = new HttpHeaders();
    headers.add("Content-Type", "application/json; charset=UTF-8");
    headers.add("X-Fsl-Location", "/");
    headers.add("X-Fsl-Response-Code", "302");
    ObjectMapper mapper = new ObjectMapper();

    String s = "";
    try
    {
        s = mapper.writeValueAsString(mapa);
    } catch (JsonProcessingException e)
    {
        LOG.error("NO SE PUEDE MAPEAR A JSON");
    }

    if (mapa == null)
        return new ResponseEntity<String>(HttpStatus.BAD_REQUEST);

    return new ResponseEntity<String>(s, headers, HttpStatus.OK);
}

Upvotes: 0

Sergey Yamshchikov
Sergey Yamshchikov

Reputation: 1019

Try to use ParameterizedTypeReference instead of wildcarded Map. It should looks like this.

ParameterizedTypeReference<Map<String, Object>> typeRef = new ParameterizedTypeReference<Map<String, Object>>() {};

ResponseEntity<Map<String, Object>> response = restTemplate.exchange(finalUrl.toString(), HttpMethod.GET, null, typeRef);

Upvotes: 23

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