The technical principles of HTTP Client Experimental Framework in the Java Library Detailed Explanation

HTTP Client Experimental framework is a technology in the Java class library to send HTTP requests and process HTTP responses.This framework is introduced in the Java 11 and above versions to provide more simple, more flexible and more efficient HTTP communication methods.This article will introduce the technical principles of the HTTP Client Experimental framework in detail, and provide some Java code examples to help readers better understand and use the framework. The HTTP Client Experimental framework is based on the asynchronous non -blocking I/O model and uses the NIO (non -blocking input output) function of Java.Compared with the traditional HTTPClient and other traditional HTTP client libraries such as HTTPURLCONNECTION and Apache HTTPClient, the HTTP Client Experimental framework has higher performance and lower resource consumption.It uses Java's streaming API design, allows the construction and configuration HTTP request through chain calls, and handles HTTP response by callback. The core class of the HTTP Client Experimental framework is HTTPClient.By creating an HTTPClient instance, we can send HTTP requests and deal with response.Below is an example code that uses the HTTP Client Experimental framework to send GET requests: import java.net.URI; import java.net.http.HttpClient; import java.net.http.HttpRequest; import java.net.http.HttpResponse; import java.util.concurrent.CompletableFuture; public class HttpClientExample { public static void main(String[] args) { HttpClient httpClient = HttpClient.newHttpClient(); HttpRequest httpRequest = HttpRequest.newBuilder() .uri(URI.create("https://api.example.com/data")) .GET() .build(); CompletableFuture<HttpResponse<String>> responseFuture = httpClient.sendAsync(httpRequest, HttpResponse.BodyHandlers.ofString()); responseFuture.thenApply(HttpResponse::body) .thenAccept(System.out::println) .join(); } } In the above code, we first created an HTTPClient instance through httpclient.newhttpclient () method.Then, we used httprequest.newbuilder () method to build a get request and set the request URI.By calling the .build () method, we created an HTTPRequest object. Next, we use httpclient.sendasync () method to send asynchronous requests.This method accepts httprequest objects and httpresponse.bodyhandlers.ofstring () as a parameter, specifying the response processing method as a string.The Sendasync () method here returns a CompletableFuture to indicate the asynchronous HTTP response. Finally, we use CompletableFuture's callback functions .thenApply () and .ThenAccept () to deal with the response and output.In this example, we simply output the response Body to the console. In addition to basic GET requests, the HTTP Client Experimental framework also supports various HTTP methods such as POST, Put, Delete, and provides richer configuration options, such as adding HTTP heads, setting timeout, processing cookies, etc. To sum up, the HTTP Client Experimental framework provides a simple, flexible and efficient HTTP communication method by using the NIO function and streaming API design of Java.Its technical principles in the Java library include asynchronous non -blocking I/O model and streaming API design.By using this framework, we can easily send HTTP requests and handle responses to better meet the HTTP communication needs of modern applications.