java 获得调用者类名,如何在Java中获取调用者类

I want to get the caller class of the method, i.e.

class foo{

bar();

}

In the method bar, I need to get the class name foo, and I found this method:

Class clazz = sun.reflect.Reflection.getCallerClass(1);

However, even though getCallerClass is public, when I try to call it Eclipse says:

Access restriction: The method getCallerClass() from the type

Reflection is not accessible due to restriction on required library

C:Program FilesJavajre7librt.jar

Are there any other choices?

解决方案

You can generate a stack trace and use the informations in the StackTraceElements.

For example an utility class can return you the calling class name :

public class KDebug {

public static String getCallerClassName() {

StackTraceElement[] stElements = Thread.currentThread().getStackTrace();

for (int i=1; i

StackTraceElement ste = stElements[i];

if (!ste.getClassName().equals(KDebug.class.getName()) && ste.getClassName().indexOf("java.lang.Thread")!=0) {

return ste.getClassName();

}

}

return null;

}

}

If you call KDebug.getCallerClassName() from bar(), you'll get "foo".

Now supposing you want to know the class of the method calling bar (which is more interesting and maybe what you really wanted). You could use this method :

public static String getCallerCallerClassName() {

StackTraceElement[] stElements = Thread.currentThread().getStackTrace();

String callerClassName = null;

for (int i=1; i

StackTraceElement ste = stElements[i];

if (!ste.getClassName().equals(KDebug.class.getName())&& ste.getClassName().indexOf("java.lang.Thread")!=0) {

if (callerClassName==null) {

callerClassName = ste.getClassName();

} else if (!callerClassName.equals(ste.getClassName())) {

return ste.getClassName();

}

}

}

return null;

}

Is that for debugging ? If not, there may be a better solution to your problem.