用java写一个多线程测试post接口压力的样例

你好，我是 C 知道。关于您的问题，我可以回答。以下是一个用 Java 编写的多线程测试 POST 接口压力的样例：

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class PostTest {
    public static void main(String[] args) {
        String url = "http://example.com/api";
        int threadNum = 10;
        int requestNum = 100;

        for (int i = ; i < threadNum; i++) {
            new Thread(() -> {
                for (int j = ; j < requestNum; j++) {
                    try {
                        URL u = new URL(url);
                        HttpURLConnection conn = (HttpURLConnection) u.openConnection();
                        conn.setRequestMethod("POST");
                        conn.setDoOutput(true);
                        conn.setDoInput(true);
                        conn.setUseCaches(false);
                        conn.setRequestProperty("Content-Type", "application/json;charset=UTF-8");

                        String data = "{\"key\":\"value\"}";
                        OutputStream os = conn.getOutputStream();
                        os.write(data.getBytes("UTF-8"));
                        os.flush();
                        os.close();

                        InputStream is = conn.getInputStream();
                        byte[] buffer = new byte[1024];
                        int len = ;
                        while ((len = is.read(buffer)) != -1) {
                            // do something with response
                        }
                        is.close();
                        conn.disconnect();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }).start();
        }
    }
}

这个样例会启动 10 个线程，每个线程发送 100 次 POST 请求到指定的 URL，请求的数据为 `{"key":"value"}`。您可以根据需要修改 URL、线程数、请求次数和请求数据。