java.lang.reflect.UndeclaredThrowableExceptionjiang

實例包含由調用處理程序拋出的經過檢查的未聲明異常,可以使用 getUndeclaredThrowable() 方法獲取

String msg = null;
if (e instanceof UndeclaredThrowableException){
    Throwable targetEx = ((UndeclaredThrowableException) e).getUndeclaredThrowable();
    if (targetEx != null){
        msg = targetEx.getMessage();
    }
} else {
    msg = e.getMessage();
}