Java 的 HTTP 客户端 http4j 示例代码

最新推荐文章于 2021-02-12 16:37:02 发布

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本文通过一个示例展示了如何使用HTTP4J库来获取HTTP请求的详细性能指标，包括发送和接收的字节数、阻塞成本、DNS查找成本等。

package com.google.code.http4j.example;

import java.io.IOException;
import java.net.URISyntaxException;

import com.google.code.http4j.Client;
import com.google.code.http4j.Response;
import com.google.code.http4j.impl.BasicClient;
import com.google.code.http4j.utils.Metrics;

public class BasicExample {

        public static void main(String[] args) throws Exception {
                Client client = new BasicClient();
                Response response = client.get("http://code.google.com/p/http4j/");
                Metrics metrics = response.getMetrics();
                System.out.println("Bytes sent:" + metrics.getBytesSent());
                System.out.println("Bytes received:" + metrics.getBytesReceived());
                System.out.println("Blocking cost:" + metrics.getBlockingCost());
                System.out.println("DNS lookup cost:" + metrics.getDnsLookupCost());
                System.out.println("Connection establish cost:" + metrics.getConnectingCost());
                System.out.println("Sending cost:" + metrics.getSendingCost());
                System.out.println("Waiting cost:" + metrics.getWaitingCost());
                System.out.println("Receiving cost:" + metrics.getReceivingCost());
                System.out.println("SSL handshake cost:" + metrics.getSslHandshakeCost());
                response.output(System.out);
                client.shutdown();
        }
}