resultString = restTemplate.exchange(url, HttpMethod.GET, requestEntity, String.class).getBody...resultString = restTemplate.exchange(url, HttpMethod.PUT, requestEntity, String.class).getBody...resultString = restTemplate.exchange(url, HttpMethod.POST, requestEntity, String.class).getBody...resultString = restTemplate.exchange(url, HttpMethod.DELETE, requestEntity, String.class).getBody