龙目岛和Guice注射 [英] lombok and guice injection

问题描述

我对lombok和guice注入不熟悉，我可以了解一般概念，但是由于语法的原因，我遇到了一些我不理解也无法搜索的代码.以下是代码，有人可以帮助我理解吗?

I'm new to lombok and guice injection, I could get the general concept but I ran into some code which I don't understand and can't search due to the syntax. Following is the code, can someone help me understand this?

import com.google.inject.Inject;
import lombok.AccessLevel;
import lombok.AllArgsConstructor;

@AllArgsConstructor(access = AccessLevel.PRIVATE, onConstructor = @__({ @Inject }))
public class SomeClass {
...
}

谢谢！

推荐答案

这将添加一个带有所有字段作为参数的构造函数，并带有@Inject注释和private修饰符，因此您的代码将扩展为: /p>

This is going to add a constructor with all fields as parameters, with @Inject annotation and private modifier, so your code will be expanded to:

import com.google.inject.Inject;

public class SomeClass {

    @Inject
    private SomeClass() {
    }
}

这是假设该类中没有任何字段.如果您有一些字段，那么它们将被添加到构造函数中，例如

This is assuming there is no fields in the class. If you have some fields, then they will be added to the constructor, for example

import com.google.inject.Inject;
import lombok.AccessLevel;
import lombok.AllArgsConstructor;

@AllArgsConstructor(access = AccessLevel.PRIVATE, onConstructor = @__({ @Inject }))
public class SomeClass {
    private String name;
}

将成为

import com.google.inject.Inject;

public class SomeClass {
    private String name        

    @Inject
    private SomeClass(String name) {
        this.name = name;
    }
}

请注意，根据以下文档，这无论如何在Guice中都不起作用，因为它需要一个非私有的构造函数:

Please note, that this won't work in Guice anyway, as it requires a constructor that is not private, per this documenation: https://github.com/google/guice/wiki/InjectionPoints.

希望有帮助！

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