Java class library Jetty Extra :: Asynchronous http client framework technical details
Java class library Jetty Extra :: Asynchronous http client framework technical details
Jetty Extra :: The asynchronous HTTP client is a powerful framework in the Java class library. It provides a non -blocking IO method to execute HTTP requests and can process a large number of concurrent requests.
Jetty Extra :: The main characteristics and technical details of the asynchronous HTTP client are as follows:
1. Asynchronous execution: This framework uses an incident -based asynchronous model to process HTTP requests and responses by callback function processing.This allows applications to continue to perform other tasks after issuing a request without waiting to return to the response.
2. Non -blocking IO: This framework uses the non -blocking IO mechanism in the Jetty server. It works with the thread pool and selector to achieve HTTP request processing with high performance and high throughput.
3. Connection pool: This framework supports the reuse of HTTP connection. Using the connection pool can significantly improve the client performance and reduce the cost of creating and destroying the connection.
4. Abnormal treatment: This framework provides a reliable abnormal processing mechanism that can capture and process abnormalities that may occur during the request, such as network failure and timeout.
5. Configuration and customization: Developers can customize asynchronous HTTP client through configuration files or programming methods.For example, you can set the proxy server, timeout time, connecting retry strategy, etc.
The following is a code example of using Jetty Extra :: asynchronous HTTP client:
import org.eclipse.jetty.client.HttpClient;
import org.eclipse.jetty.client.api.ContentResponse;
import org.eclipse.jetty.client.api.Request;
import org.eclipse.jetty.client.util.StringContentProvider;
import org.eclipse.jetty.util.thread.QueuedThreadPool;
public class AsyncHttpClientExample {
public static void main(String[] args) throws Exception {
HttpClient httpClient = new HttpClient();
// Configure the thread pool size
httpClient.setExecutor(new QueuedThreadPool(100));
// Start the client
httpClient.start();
// Create HTTP request
Request request = httpClient.newRequest("http://example.com/api");
request.method("POST");
request.content(new StringContentProvider("request body"));
// Send a request and deal with response
request.send(new ResponseListener());
}
private static class ResponseListener extends ContentResponse.CompleteListener {
@Override
public void onComplete(Result result) {
if (result.isFailed()) {
// Treatment requests abnormally
Throwable failure = result.getFailure();
System.out.println ("Request failure:" + FAILURE.GetMessage ());
} else {
// Successful response
ContentResponse response = result.getResponse();
String responseBody = response.getContentAsString();
System.out.println ("response:" + responsebody);
}
}
}
}
In the above code, we created a Jetty HTTPClient instance and made some configurations, such as setting a thread pool size.Then we created a HTTP request and handled the response through the callback function (`Responselistener`).
It should be noted that this example is only used to illustrate the basic usage of Jetty Extra :: for the asynchronous HTTP client, and may need to be further configured and customized according to actual needs.You can obtain more detailed information and configuration guidelines by checking the official documentation of Jetty.
To sum up, Jetty Extra :: The asynchronous HTTP client is a powerful Java framework. By providing asynchronous execution and non -blocking IO mechanism, HTTP request processing of high -performance and high throughput is realized.Developers can meet various complex business needs through configuration and customization.
