Question

我在glassfish下部署了一个JSF Web应用程序，其中我有两个按钮。第一个启动无限线程，第二个停止它。我的问题是我无法停止正在运行的线程。我已经搜索了一个解决方案网但是徒劳。如果我有一个J2SE应用程序而不是J2EE应用程序，这是我的代码

package com.example.beans;

import org.apache.commons.lang.RandomStringUtils;

public class MyBusinessClass {
    public static void myBusinessMethod() {
        /* this method takes a lot of time */
        int i = 1;
        while (i == 1) {
            String random = RandomStringUtils.random(3);

            System.out.println(random);

        }
    }
}   


package com.example.beans;

import java.util.Random;
import java.util.TimerTask;

import org.apache.commons.lang.RandomStringUtils;
import org.apache.log4j.Logger;

import com.example.core.RandomUtils;

public class MySimpleRunnableTask implements Runnable {
private Logger logger = Logger.getLogger(MySimpleRunnableTask.class);

    @Override
    public void run() {
        MyBusinessClass.myBusinessMethod();
    }
}


@ManagedBean(name = "MainView")
@SessionScoped
public class MainView {

    private static Thread myThread;

    @SuppressWarnings({ "unchecked", "rawtypes", "deprecation" })
    public String startSimpleThread() throws SecurityException,
                                             NoSuchMethodException,
                                             InterruptedException {

        MySimpleRunnableTask mySimpleRunnableTask = new MySimpleRunnableTask();
        myThread = new Thread(mySimpleRunnableTask);
        myThread.start();
        return null;
    }

    @SuppressWarnings({ "unchecked", "rawtypes", "deprecation" })
    public String stopSimpleThread() throws SecurityException,
                                            NoSuchMethodException, 
                                            InterruptedException {
        myThread.interrupt();
        return null;
    }
}

我已经更改了我的代码，因此您可以真正了解我的问题

Answer 1

interrupt仅将线程中的中断状态设置为true。线程需要定期汇集中断状态标志以停止运行：

public void run() {
    /* you will have to touch the code here */
    int i = 1;
    while (i == 1) {
        String random = RandomStringUtils.random(3);
        logger.info(random);
        if (Thread.currentThread().isInterrupted()) {
            // the thread has been interrupted. Stop running.
            return;
        }
    }
}

这是正确停止线程的唯一方法：让他停下来。如果没有来自正在运行的线程的合作，就没有干净的方法。

如何在应用程序服务器中停止无限线程

1 个答案: