java HTTP請求JSON數據傳輸

實例

public static JSONObject doPost(String url, JSONObject json){

        CloseableHttpClient httpclient = HttpClientBuilder.create().build();
        HttpPost post = new HttpPost(url);
        JSONObject response = null;
        try {
            StringEntity s = new StringEntity(json.toString());
            s.setContentEncoding("UTF-8");
            s.setContentType("application/json");//發送json數據需要設置contentType
            post.setEntity(s);
            HttpResponse res = httpclient.execute(post);
            if(res.getStatusLine().getStatusCode() == HttpStatus.SC_OK){
                String result = EntityUtils.toString(res.getEntity());// 返回json格式：
                response = JSONObject.parseObject(result);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        System.out.println(response);
        return response;
    }