JAVA中带有JSON字符串的HTTP POST请求

最后，我设法找到了解决问题的方法…

public static void SaveWorkFlow() throws IOException    {        CloseableHttpClient httpClient = HttpClients.createDefault();        HttpPost post = new HttpPost(myURLgoesHERE);        List<NamevaluePair> params = new ArrayList<>();        params.add(new BasicNamevaluePair("task", "savemodel"));        params.add(new BasicNamevaluePair("pre", generatedJSONString));        CloseableHttpResponse response = null;        Scanner in = null;        try        { post.setEntity(new UrlEnpredFormEntity(params)); response = httpClient.execute(post); // System.out.println(response.getStatusLine()); HttpEntity entity = response.getEntity(); in = new Scanner(entity.getContent()); while (in.hasNext()) {     System.out.println(in.next()); } EntityUtils.consume(entity);        } finally        { in.close(); response.close();        }    }