setter 注射指南 +便门
我有一个 Wicket 网页，我在其中创建了 A 类的新对象： A a = new A(用户u);
在AI中希望有setter注入，但这实际上没有完成。我听说必须提供一个空的构造函数，但是怎么可能同时拥有一个带有 setter 注入的非空构造函数呢？
I have a Wicket Web Page where I create a new Object of class A:
A a = new A(User u);
In A I would like to have setter injection, however this is actually not done. I have heard that one must provide an empty constructor but how is it possible to have also a non - empty constructor with setter injection?
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我不熟悉 Wicket，但我假设您的 Wicket 网页上有各种带有
@Inject注释的内容，是吗？所以，你有几个选择；按优先顺序排列：
@Inject您的User，一种选择是使用@注释，然后在您的页面中，只需A的构造函数注入@Inject将A或Provider注入网页。@Inject注入到您的网页中，将MembersInjector（称为aMembersInjector），然后在创建A< /code> 对象调用aMembersInjector.injectMembers(a)来导致所有 setter 注入发生。@Inject注入到您的网页Injector中，并在创建A后调用Injector.injectMembers(a)>。I'm not familiar with Wicket, but I assume that you've got various things on your Wicket web page annotated with
@Inject, yes?So, you have a few options; in order of preference:
@Injecting yourUser, one option is to annotate the constructor ofAwith@Injectand then in your page, just@Injecteither anAor aProvider<A>into web page.@Injectinto your web page aMembersInjector<A>(call itaMembersInjector) and then after you create yourAobject callaMembersInjector.injectMembers(a)to cause all the setter injection to happen.@Injectinto your web page theInjectorand callInjector.injectMembers(a)after you create yourA.我不太确定你在问什么。无论如何，请尝试查看
查看是否有任何示例可以阐明您的问题。
I'm not exactly sure what you're asking. Regardless, try taking a look at
at see if any examples there shed light on your problem.