java - 使用线程运行java程序

Question

晚上好，我这里有这两个程序

httpServer.java

import java.io.IOException;
import java.io.OutputStream;
import java.net.InetSocketAddress;
import java.util.concurrent.atomic.AtomicInteger;

import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer;

public class httpServer extends Thread  {



public static void main(String[] args) throws Exception {
    HttpServer server = HttpServer.create(new InetSocketAddress(8000), 0);
    server.createContext("/test", new MyHandler());
    server.setExecutor(null); // creates a default executor
    server.start();


}

static class MyHandler implements HttpHandler {
    AtomicInteger atomicInteger = new AtomicInteger(0); 
    int theValue = atomicInteger.get(); 
    @Override
    public void handle(final HttpExchange t) throws IOException {
        final String response;

        final String requestMethod = t.getRequestMethod();
        if ("GET".equals(requestMethod)) {
            response = String.format("Besuche: %d%n", atomicInteger.addAndGet(1));
        }
        else if ("POST".equals(requestMethod)) {
            atomicInteger.set(0);

            response = "Reset to 0";
        }
        else {
            throw new IOException("Unsupported method");
        }

        t.sendResponseHeaders(200, response.length());
        final OutputStream os = t.getResponseBody();
        os.write(response.getBytes());
        os.close();
    }
}



}

测试.java

public class Test {
public static void main(String[] args) {
    System.out.println("Hello World!"); 
}
}

现在我希望 Test.java 在我启动 httpServer.java 时开始工作。 我想用线程来实现这一点。我找到了这个here在线解释了我如何创建线程，但我不知道如何让 Test.java 在那里工作。

注意:我知道我可以在一个程序中编写这两个代码，但我想知道如何使用我正在处理的另一个项目的线程。

Answer 1

要启动线程，您需要实现run方法。 run 方法内的所有内容都将在新线程中执行。

您没有实现 run 方法，因此调用 server.start(); 实际上什么也不做。使用run-方法，它看起来像这样:

public class httpServer extends Thread  
{
    //Everything inside this method is executed in a new Thread
    @Override
    public void run()
    {
        super.run();

        System.out.println("THIS IS EXECUTED IN A THREAD");

        this.serverStuff();
    }

    private void serverStuff()
    {
        HttpServer server = HttpServer.create(new InetSocketAddress(8000), 0);
        server.createContext("/test", new MyHandler());
        server.setExecutor(null); // creates a default executor
    }
}

public class Test 
{
    public static void main(String[] args) 
    {
        System.out.println("THIS IN NOT EXECUTED IN THREAD");

        //This call creates a new Thread. It calls the run()-Method
        new httpServer().start();
    }
}