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javajsonresttemplate

How to get JSON value from RestTemplate

I would like to retrieve the value of a JSON file from a RestTemplate request. Unfortunately, I do not know how to proceed. I am using the following method:

RestTemplate restTemplate = new RestTemplate();
final String url = "http://localhost:3333/command/core/get-csrf-token";

public String getToken() {
    String token = restTemplate.getForObject(url, String.class);
    System.out.println(token);
    return token;

I get a String as output {"token":"myToken"}

Is it possible to retrieve directly the value of the JSON?

Solution

  • Parse the JSON with a library (e.g. Jackson) and grab the token field.

    String json = restTemplate.getForObject(url, String.class);
ObjectMapper mapper = new ObjectMapper();
return mapper.readTree(json).get("token").asText();