Apache HttpClient 4 JSON post example

Posting JSON to a URL is a common use case. Here is a follow-on to HttpClient Post for a String.

     * Performs HTTP post.
     * @param url http resource to post
     * @return string response
    protected String post(String url, MyJsonObject myJsonObject) {
        HttpClient httpClient = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost(url);
        ResponseHandler<String> responseHandler = new BasicResponseHandler();
        String responseBody = null;
        try {
            HttpPost httpPost = new HttpPost(url);
            StringEntity stringEntity = new StringEntity(JsonUtils.toJson(myJsonObject));
            httpPost.setHeader("Content-type", "application/json");
            ResponseHandler<String> responseHandler = new BasicResponseHandler();
            response = httpclient.execute(httpPost, responseHandler);
        } catch (IOException e) {
            log.error("IOException from " + url + " with " + object , e);
            throw e;
        } finally {
        return responseBody;

Line 13 and 14 convert the object to be posted into a Json string and set it as the payload to be sent to the URL.
Line 15 sets the content type so the URL knows that you can accept JSON as a response.

This entry was posted in Java and tagged , , , , . Bookmark the permalink.

1 Response to Apache HttpClient 4 JSON post example

  1. Pingback: Apache HttpClient 4 JSON post example with a generic method | Java Ninja Chronicles By Norris Shelton, Jr

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s