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问题描述
我遇到了@Autowired
的示例:
public class EmpManager {
@Autowired
private EmpDao empDao;
}
我很好奇empDao
如何获取设置,因为没有设置方法,而且它是私有的.
I was curious about how the empDao
get sets since there are no setter methods and it is private.
推荐答案
Java允许通过 AccessibleObject.setAccessible()
方法(属于该方法)反射框架(Field
和Method
都从AccessibleObject
继承).一旦发现并写入了该字段,其余的工作就变得很简单了.仅仅是编程简单问题.
Java allows access controls on a field or method to be turned off (yes, there's a security check to pass first) via the AccessibleObject.setAccessible()
method which is part of the reflection framework (both Field
and Method
inherit from AccessibleObject
). Once the field can be discovered and written to, it's pretty trivial to do the rest of it; merely a Simple Matter Of Programming.
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