Java獲取正在執行的函數名

利用StackTrace堆棧軌跡獲取某個時間的調用堆棧狀態。

package com.dsp.demo;

public class TechDemo {

    public static void main(String[] args) {
        System.out.println("Hello dsp!");

        System.out.printf("%x\n", 2129);

        aMethod();
    }

    private static String getExecutingMethodName() {
        StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
        StackTraceElement e = stackTrace[2];
        return e.getMethodName();
    }

    private static void aMethod() {
        System.out.println("######### aMethod #########");
        //String executingMethodName = Thread.currentThread().getStackTrace()[2].getMethodName();
        String executingMethodName = getExecutingMethodName();
        System.out.println(executingMethodName);
        String className = Thread.currentThread().getStackTrace()[2].getClassName();
        System.out.println(className);
        String fileName = Thread.currentThread().getStackTrace()[2].getFileName();
        System.out.println(fileName);
        System.out.println("******** aMethod ******");

        bMethod();
    }

    private static void bMethod() {
        System.out.println("######### bMethod #########");
        // String executingMethodName = Thread.currentThread().getStackTrace()[2].getMethodName();
        String executingMethodName = getExecutingMethodName();
        System.out.println(executingMethodName);
        String className = Thread.currentThread().getStackTrace()[2].getClassName();
        System.out.println(className);
        String fileName = Thread.currentThread().getStackTrace()[2].getFileName();
        System.out.println(fileName);
        System.out.println("******** bMethod ******");

        cMethod();
    }

    private static void cMethod() {
        System.out.println("######### cMethod #########");
        String executingMethodName = getExecutingMethodName();
        System.out.println(executingMethodName);
        String className = Thread.currentThread().getStackTrace()[2].getClassName();
        System.out.println(className);
        String fileName = Thread.currentThread().getStackTrace()[2].getFileName();
        System.out.println(fileName);

        saveA();
        updateB();

        System.out.println("******** cMethod ******");
    }

    public static void saveA() {
        System.out.println("######### saveA #########");
        // ###
        String executingMethodName = getExecutingMethodName();
        System.out.println(executingMethodName);

        // ###
        String name = new Object(){}.getClass().getEnclosingMethod().getName();
        System.out.println(name);
        System.out.println("******** saveA ******");
    }

    public static void updateB() {
        System.out.println("######### updateB #########");
        String executingMethodName = getExecutingMethodName();
        System.out.println(executingMethodName);
        System.out.println("******** updateB ******");
    }

}

執行結果：

Hello dsp!
851
######### aMethod #########
aMethod
com.dsp.demo.TechDemo
TechDemo.java
******** aMethod ******
######### bMethod #########
bMethod
com.dsp.demo.TechDemo
TechDemo.java
******** bMethod ******
######### cMethod #########
cMethod
com.dsp.demo.TechDemo
TechDemo.java
######### saveA #########
saveA
saveA
******** saveA ******
######### updateB #########
updateB
******** updateB ******
******** cMethod ******

另附：

Stack Trace - 百度百科

Java異常的棧軌跡(Stack Trace)

使用Stacktrace處理異常