public static String getTraceInfo(){            StringBuffer sb = new StringBuffer();                         StackTraceElement[] stacks = new Throwable().getStackTrace();            int stacksLen = stacks.length;            sb.append("class: " ).append(stacks[1].getClassName()).append("; method: ").append(stacks[1].getMethodName()).append("; number: ").append(stacks[1].getLineNumber());                        return sb.toString();        }    String _methodName =    new Exception().getStackTrace()[1].getMethodName();// 获得调用者的方法名    String _thisMethodName =    new Exception().getStackTrace()[0].getMethodName();// 获得当前的方法名