Java RestTemplate post请求传递对象参数_httpentity不传数组,传对象

通过exchange发送Post请求并设置header和请求体body

LoginParam param = LoginParam.builder().loginName(loginName).password(password).build();
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.add("Content-Type", "application/json");
        HttpEntity<String> httpEntity = new HttpEntity<>(JSON.toJSONString(param), httpHeaders);
        String url = DustConstant.DUST_URL.concat(DustConstant.LOGIN);
        ResponseEntity<JSONObject> responseEntity = restTemplate.exchange(url,
                HttpMethod.POST, httpEntity, JSONObject.class);