線程棧與線程異常處理

線程棧獲取

/**
 * 線程棧和線程異常處理 
 * @author ydy
 * */
public class ThreadStackTest {
	public static void main(String[] args) {
		testStack();
		
	}
	/**
	 * 測試線程棧
	 * */
	private static void testStack() {
		Thread currentThread = Thread.currentThread();
		StackTraceElement[] stackTrace = currentThread.getStackTrace();//獲取線程棧中元素
		for(StackTraceElement element:stackTrace) {
			String fileName = element.getFileName();
			String methodName = element.getMethodName();
			System.out.println("fileName:"+fileName);
			System.out.println("methodName:"+methodName);
			
		}
	}

}

輸出結果

fileName:Thread.java
methodName:getStackTrace
fileName:ThreadStackTest.java
methodName:testStack
fileName:ThreadStackTest.java
methodName:main

 

線程異常處理器 UncaughtExceptionHandler

package com.ydy.thread;

import java.lang.Thread.UncaughtExceptionHandler;

import org.apache.commons.lang3.exception.ExceptionUtils;
/**
 * 線程異常處理
 * @author ydy
 * */
public class ThreadExceptionTest {
	public static void main(String[] args) {
		Runnable runnable=new Runnable() {
			
			@Override
			public void run() {
				// TODO Auto-generated method stub
				int i=1/0;
				
			}
		};
		Thread thread=new Thread(runnable);
		thread.setUncaughtExceptionHandler(new UncaughtExceptionHandlerDefault());
		thread.start();
		
	}

}

class UncaughtExceptionHandlerDefault implements UncaughtExceptionHandler{

	@Override
	public void uncaughtException(Thread t, Throwable e) {
		// TODO Auto-generated method stub
		System.out.println("異常線程名稱:"+t.getName());
		System.out.println("異常信息:"+ExceptionUtils.getStackTrace(e));
		
	}
	
}

輸出信息

異常線程名稱:Thread-0
異常信息:java.lang.ArithmeticException: / by zero
	at com.ydy.thread.ThreadExceptionTest$1.run(ThreadExceptionTest.java:17)
	at java.lang.Thread.run(Thread.java:745)