RestTemplate postForObject returns null, doesn't hit the service

Question

I am using spring RestTemplate for hitting a http service which works fine from a browser based HTTP client. But in my Java code, RestTemplate returns null. It doesn't hit the service (I tested using a debug point).

Below is my rest client code:

String url = "http://localhost:8080/webappn/app/decryptPassword";
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.TEXT_PLAIN);
HttpEntity<String> request = new HttpEntity<String>(getConnectionPassword().toString(), headers);
RestTemplate restTemplate = new RestTemplate();
try{
    String response = restTemplate.postForObject(url, request, String.class);
    this.password = response;
}catch(HttpStatusCodeException e){
    utils.writeLoggerError(LOGGER, "Password could not be decrypted");
    throw new Exception("Password could not be decrypted");
}

response is coming null when this code executes.

This is the rest service code:

@RequestMapping(value="/decryptPassword", method = RequestMethod.POST, produces = "text/plain")
public String decryptPassword(@RequestBody String cipherText){
    try{
        return myService.decryptPassword(cipherText);
    } catch (Exception e){
        throw new InternalServerErrorException("Password cannot be decrypted");
    }
}

Answer 1

I figured out why this was happening. I have an authentication layer set up which filters all the requests. I added the JSESSIONID cookie in my request and it worked fine.

Although, it should have thrown an exception.