Posting with Java HttpClient

Posting to a Web Server with Java HttpClient

Java HttpClient is a library from Apache that allows you to post data to a web server. This is useful for sending data between applications or for debugging. This blog post will show you how to use Java HttpClient to post data to a server.

Setting up the HttpClient

The first step is to create an instance of the Apache HttpClient:

HttpClient client = new DefaultHttpClient();

Next, create an instance of a Post request and set the URL to the endpoint that you are posting to:

HttpPost post = new HttpPost("http://domain.com/endpoint");

Adding the Content

Once the request has been created, you need to add the content you want to post. This can be done by specifying the content type and encoding:

post.setHeader("Content-Type", "application/x-www-form-urlencoded");
post.setHeader("Content-Encoding", "UTF-8");

Then, you can add the content to the request:

List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("name", "value"));
post.setEntity(new UrlEncodedFormEntity(nameValuePairs));

Sending the Request

Finally, you can send the request and get the response:

HttpResponse response = client.execute(post);
String responseString = EntityUtils.toString(response.getEntity());

The response string should contain the response from the server. If all goes well, you should have successfully posted data to the server using Java HttpClient.