想在jsp页面控制线程的开启与中断。现在搞不定。是不是不可行?package com.thread.demo;public class ATask implements Runnable{
public void run() {
try {
while (true) {
System.out.println("I am running!");
Thread.sleep(100);
}
} catch (InterruptedException e) {
System.out.println("ATask.run() interrupted!");
}
}
}package com.thread.demo;public class InterruptTaskTest {
public static void main(String[] args) throws Exception{
Thread t = new Thread(new ATask());
System.out.println("test1:"+t);
t.start();
System.out.println("test2:"+t);
t.interrupt();
System.out.println("test3:"+t);
}
//直接用类运行的话,肯定能抛出InterruptedException中断线程。页面的话就是相当不是同一个线程了。难解!<%@ page language="java" import="java.util.*,com.thread.demo.*,java.io.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>
<a href="javascript:location.href='index.jsp?action=on'">打开</a>
<a href="javascript:location.href='index.jsp?action=stop'">关闭</a>
<%
String action=request.getParameter("action");
Thread t = new Thread(new ATask());
System.out.println("test1:"+t);
if("on".trim().equals(action))
{
t.start();
}
System.out.println("test2:"+t);
if("stop".trim().equals(action))
{
t.interrupt();
}
System.out.println("test3:"+t);
%>
</body>
</html>
public void run() {
try {
while (true) {
System.out.println("I am running!");
Thread.sleep(100);
}
} catch (InterruptedException e) {
System.out.println("ATask.run() interrupted!");
}
}
}package com.thread.demo;public class InterruptTaskTest {
public static void main(String[] args) throws Exception{
Thread t = new Thread(new ATask());
System.out.println("test1:"+t);
t.start();
System.out.println("test2:"+t);
t.interrupt();
System.out.println("test3:"+t);
}
//直接用类运行的话,肯定能抛出InterruptedException中断线程。页面的话就是相当不是同一个线程了。难解!<%@ page language="java" import="java.util.*,com.thread.demo.*,java.io.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>
<a href="javascript:location.href='index.jsp?action=on'">打开</a>
<a href="javascript:location.href='index.jsp?action=stop'">关闭</a>
<%
String action=request.getParameter("action");
Thread t = new Thread(new ATask());
System.out.println("test1:"+t);
if("on".trim().equals(action))
{
t.start();
}
System.out.println("test2:"+t);
if("stop".trim().equals(action))
{
t.interrupt();
}
System.out.println("test3:"+t);
%>
</body>
</html>
如果当前线程没有中断它自己(这在任何情况下都是允许的),则该线程的 checkAccess 方法就会被调用,这可能抛出 SecurityException。 如果线程在调用 Object 类的 wait()、wait(long) 或 wait(long, int) 方法,或者该类的 join()、join(long)、join(long, int)、sleep(long) 或 sleep(long, int) 方法过程中受阻,则其中断状态将被清除,它还将收到一个 InterruptedException。你捕获下这个异常么。
<%! Thread t = new Thread(new ATask()); %>另外,线程暂停/重启,最好用flag变量控制,循环照循环,根据flag决定是否做事情,如:
while (true) {
if(flag) System.out.println("I am running!");
Thread.sleep(100);
}