【z】Java中查看一个方法被调用的层次(Reflection、StackTrace) | Li...

1	package test;

2	public class Main {

3	public static void main(String[] args) {

4	new Test().test();

5

}

6

}

 

查看源代码

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1	package test;

2

3	import java.util.Map;

4	import sun.reflect.Reflection;

5

6	public class Test {

7	public void test() {

8	System.out.println("------------Reflection.getCallerClass(i)------------");

9	System.out.println("Reflection.getCallerClass(0)=" + Reflection.getCallerClass(0));

10	System.out.println("Reflection.getCallerClass(1)=" + Reflection.getCallerClass(1));

11	System.out.println("Reflection.getCallerClass(2)=" + Reflection.getCallerClass(2));

12	System.out.println("Reflection.getCallerClass(3)=" + Reflection.getCallerClass(3));

13	System.out.println("Reflection.getCallerClass(4)=" + Reflection.getCallerClass(4));

14

15	System.out.println("

16	------------new Throwable().getStackTrace()------------");

17	StackTraceElement[] elements = new Throwable().getStackTrace();

18	for (int i = 0; i < elements.length; i++) {

19	System.out.println(elements[i]);

20

}

21

22	System.out.println("

23	------------Thread.currentThread().getStackTrace()------------");

24	elements = Thread.currentThread().getStackTrace();

25	for (int i = 0; i < elements.length; i++) {

26	System.out.println(elements[i]);

27

}

28

29	System.out.println("

30	------------Thread.getAllStackTraces()------------");

31	Map<Thread, StackTraceElement[]> map = Thread.getAllStackTraces();

32	elements = map.get(Thread.currentThread());

33	for (int i = 0; i < elements.length; i++) {

34	System.out.println(elements[i]);

35

}

36

}

37

38

}

运行结果：

————Reflection.getCallerClass(i)————
Reflection.getCallerClass(0)=class sun.reflect.Reflection
Reflection.getCallerClass(1)=class test.Test
Reflection.getCallerClass(2)=class test.Main
Reflection.getCallerClass(3)=null
Reflection.getCallerClass(4)=null

————new Throwable().getStackTrace()————
test.Test.test(Test.java:33)
test.Main.main(Main.java:5)

————Thread.currentThread().getStackTrace()————
java.lang.Thread.getStackTrace(Thread.java:1426)
test.Test.test(Test.java:39)
test.Main.main(Main.java:5)

————Thread.getAllStackTraces()————
java.lang.Thread.dumpThreads(Native Method)
java.lang.Thread.getAllStackTraces(Thread.java:1477)
test.Test.test(Test.java:45)
test.Main.main(Main.java:5)