![]() Experience creating an HTTP server in Go, which can be found in the tutorial, How To Make an HTTP Server in Go.To set this up, follow the How To Install Go tutorial for your operating system. Finally, you will customize your POST request to include an HTTP header and add a timeout that will trigger if your request takes too long. Then, you will enhance your program to make a POST request with a body. First, you will make a GET request using the default Go HTTP client. In this tutorial, you will create a program that makes several types of HTTP requests to an HTTP server. The Go net/http package not only supports creating HTTP servers, but it can also make HTTP requests as a client. One of Go’s strengths is the breadth of its standard library, and HTTP is no exception. When a program needs to communicate with another program, many developers will use HTTP. Let’s start by choosing our transport.The author selected the Diversity in Tech Fund to receive a donation as part of the Write for DOnations program. Now we are ready to start writing our code. This is what the Select Dependency dialog looks like when we search for and add the google-http-client-jackson2 dependency: Select Dependency dialog When you see the one you want to add, clicking on it fills in the fields above. ![]() As you type, Eclipse performs searches in the background & keeps narrowing the list of available options. ![]() In the Select Dependency dialog, highlight the text field in the middle and start typing the groupId:artifactId of the library you want to add.Click on the Dependencies tab in the editor.There is an easy way to add a Maven dependency using Eclipse: Adding DependenciesĪt a minimum you will need to add the core HTTP client library:įor the purposes of this example we will add a couple more libraries: google-http-client-jackson2 and :gson. The end of a successful run looks like this: You should see success if your project was created correctly 2.1. When you run this configuration the console output should clearly show your project being processed: This is what the start of your Console output should look like Verify that the project has been created successfullyĮnter clean verify in the Goals field and click Run. For that, right-click on pom.xml > Run as > Maven build…. Next step will be to test whether the project was created successfully. Make sure Enable project specific settings is enabled, then set Compiler compliance level to 1.8 and click Apply and Close. When the project-specific properties dialog opens, click on Java Compiler. The following step may not be required for all Eclipse versions/installations, but it is a good idea at this early stage to ensure that you are targeting the correct version of Java (JDK 8) in your project. This dialog box can be filled-up as follows:Īfter clicking on Finish, Eclipse will create the Maven project for you. You will see a dialog box for creating a new Maven project asking you for the groupId, artifactId and a few other details. Let’s start by creating a new Maven project (you have the m2e plugin installed, right?). We’ll be using Eclipse as our IDE of choice and Maven for dependency management. One of the beauties of Google’s HTTP library is that as your code moves from one Java platform to another, all you might have to change is your choice of HttpTransport: the rest of your code remains unchanged! 2. Apache’s HttpClient is a well-known and popular choice and if you are writing code for running on App Engine, then Url Fetch is your only choice. ![]() might be the weapon of choice if you don’t want to add any dependencies. Your choice might be dictated by the limitations/issues of your Java platform (if any). When you start to use Google’s HTTP client library, the first choice you have to make is which client implementation to use (remember, this client library is just an abstraction). A gentle introduction to the use of the library it is not, and that is the gap that this article fills. The only downside is that the official documentation on it is minimal & only covers the major points. It offers a well-designed abstraction layer over a number of lower level HTTP client implementations (we’ll talk more about this later). Google’s HTTP Client Library for Java is a one-stop shop for all your HTTP client needs, irrespective of the Java platform (application server, Android, App Engine etc.). ![]()
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