如何在Java中获取调用类的名称? [英] How to get the name of the calling class in Java?
问题描述
我想在这件事上得到一些帮助,
I would like some help on this matter,
示例:
public class A {
private void foo() {
//Who invoked me?
}
}
public class B extends A {}
public class C extends A {}
public class D {
C.foo();
}
基本上就是这个场景.我的问题是方法 foo()
如何知道谁在调用它?
This is basically the scenario. My question is how can method foo()
know who is calling it?
EDIT:基本上我正在尝试做一个数据库层,并且在 class A
中,我将创建一个将生成 SQL 语句的方法.这些语句是通过获取调用class
的所有public
属性的值动态生成的.
EDIT: Basically I am trying to do a database Layer, and in class A
I will create a method that will generate SQL statements. Such statements are dynamically generated by getting the values of all the public
properties of the calling class
.
推荐答案
最简单的方法如下:
String className = new Exception().getStackTrace()[1].getClassName();
但实际上应该没有必要这样做,除非出于某些记录目的,因为这是一项相当昂贵的任务.它是什么,您认为这是解决方案的问题?我们可能会提出 - 更好的建议.
But in real there should be no need for this, unless for some logging purposes, because this is a fairly expensive task. What is it, the problem for which you think that this is the solution? We may come up with -much- better suggestions.
编辑:您的评论如下:
基本上我正在尝试做一个数据库层,在 A 类中我将创建一个将生成 sql 语句的方法,这些语句是通过获取调用类的所有公共属性的值来动态生成的.
然后我强烈建议寻找现有的ORM 库,例如
I then highly recommend to look for an existing ORM library, such as Hibernate, iBatis or any JPA implementation to your taste.
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