是否有可能将龙目岛的建造者公之于众? [英] Is it possible to make Lombok's builder public?

问题描述

我在项目中使用了Lombok库，并且无法在外部包中使用带有 @Builder 注释的类.

I am using Lombok library in my project and I am not able to use a class annotated with @Builder in outer packages.

有没有办法让建造者公开?

Is there a way to make the builder public?

MyClass instance = new MyClass.MyClassBuilder().build();

错误是:

'MyClassBuilder()'在以下位置不公开'com.foo.MyClass.MyClassBuilder'.无法访问从外部包装中

'MyClassBuilder()' is not public in 'com.foo.MyClass.MyClassBuilder'. Cannot be accessed from outside package

推荐答案

@Builder 已经产生了公共方法，只是封装私有的构造函数.原因是他们打算让您使用公开的静态 builder()方法，而不是直接使用构造函数:

@Builder already produces public methods, it's just the constructor that's package-private. The reason is that they intend for you to use the static builder() method, which is public, instead of using the constructor directly:

Foo foo = Foo.builder()
    .property("hello, world")
    .build();

---

为了向您展示生成的所有内容，我编写了以下类:

---

Just to show you everything that gets generated, I wrote the following class:

@Builder
public class Foo
{
    private final String property;
}

然后我通过 delombok 进行运行，以查看生成的所有内容.如您所见，一切都是公开的:

I then ran it through delombok to see everything that was generated. As you can see, everything is public:

public class Foo
{
    private final String property;

    @java.beans.ConstructorProperties({"property"})
    Foo(final String property) {
        this.property = property;
    }

    public static FooBuilder builder() {
        return new FooBuilder();
    }

    public static class FooBuilder
    {
        private String property;

        FooBuilder() { }

        public FooBuilder property(final String property) {
            this.property = property;
            return this;
        }

        public Foo build() {
            return new Foo(property);
        }

        public String toString() {
            return "Foo.FooBuilder(property=" + this.property + ")";
        }
    }
}

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