![]() ![]() ![]() As mentioned, these examples are heavily based on the Apache HttpClient samples, and I recommend looking at that code for more examples. I hope these examples of creating Java REST (RESTful) clients using the Apache HttpClient have been helpful. Java REST clients using the Apache HttpClient library HttpClient.getConnectionManager().shutdown() Header headers = httpResponse.getAllHeaders() įor (int i = 0 i < headers.length i++) HttpEntity entity = httpResponse.getEntity() HttpResponse httpResponse = httpclient.execute(target, getRequest) HttpGet getRequest = new HttpGet("/forecastrss?p=80020&u=f") HttpHost target = new HttpHost("", 80, "http") * Try this Twitter API URL for another example (it returns JSON results):ĭefaultHttpClient httpclient = new DefaultHttpClient() * This executes a call against the Yahoo Weather API service, which is * A simple Java REST GET example using the Apache HTTP library. Here's the source code for this first example class. Hopefully you can try this against different URLs where you can examine the header information in more detail. I wish I could have provided this demo with the OpenSSO demos I wrote a few years ago (see my PHP OpenSSO REST API examples), because the OpenSSO REST API made extensive use of header information. It also shows how to get all of the headers from the web service you're calling. This REST client uses the following Apache HttpClient classes: That service actually returns information in an RSS format, but if you don't mind parsing that XML, it's an easy way to get weather updates. This first example shows a combination of these Apache HttpClient classes used to get information from the Yahoo Weather API. But hopefully these examples will make other POST or other RESTful examples easier to read. HttpClient Connection Management (popular) How to Set TLS Version in Apache HttpClient (popular) The implementation of all these examples and code snippets can be found in my github project this is an Eclipse based project, so it. You can vote up the ones you like or vote down the ones you dont like, and go. HttpClient Basic Authentication (popular) Multipart Upload with Apache HttpClient. The REST client examples I share here are based on the examples on the HttpClient website I've mostly just tried to make them a little easier to read, and add some additional documentation to them.Īlso, I'm just focusing on HTTP GET requests in this article, because I'm writing real-world code to hit the Twitter REST API, and all I need right now are GET requests. The following examples show how to use .HttpClient. In this article I share some source code for some simple Java REST clients that use the Apache HttpClient project. Try (InputStream instream = entity.I started writing some Java REST (RESTful) clients lately, and in doing so, I've been looking at several different ways to do this, including using the Apache HttpClient project, the Jersey project, Apache CXF, and more. HttpEntity entity = response.getEntity() HttpResponse response = httpclient.execute(httppost) tEntity(new UrlEncodedFormEntity(params, "UTF-8")) Params.add(new BasicNameValuePair("param-2", "Hello!")) Params.add(new BasicNameValuePair("param-1", "12345")) Request parameters and other properties. HttpClient httpclient = HttpClients.createDefault() Since some of the classes, in the original answer, are deprecated in the newer version of Apache HTTP Components, I'm posting this update.īy the way, you can access the full documentation for more examples here. ![]()
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