Java 用GoogleGuice插入列表的最佳方式是什么？

我有三个类

CircleBuilder

，

SquareBuilder

，和

TriangleBuilder

实现

ShapeBuilder

接口

我需要初始化我的

FormBuilder

，尤其是

BuilderList

（扩展

列表

），每个类使用一个GoogleGuice实例

最好的方法是什么

我知道提供者的方法和类似的东西：

@Provides
FormBuilder provideFormBuilder() {
    DatabaseTransactionLog instance = new FormBuilder ( <numerous parameters> );

    ShapeBuilder builder = null ; 
    builder = new CircleBuilder( <numerous parameters> ) ;  
    instance.addBuilder( builder ) ;

    builder = new SquareBuilder( <numerous parameters> ) ;  
    instance.addBuilder( builder ) ;

    // And so on

    return instance;
}

有什么想法吗？

考虑一下，它将收集与您的代码片段非常相似的绑定。没有通过Multibinder提供列表，因为Multibinder是为绑定到多个模块中的同一集合而设计的，并且Multibinder列表的元素顺序将取决于模块的评估顺序

Multibinder<ShapeBuilder> shapeBinder =
    Multibinder.newSetBinder(binder(), ShapeBuilder.class);
shapeBinder.addBinding().to(CircleBuilder.class);
shapeBinder.addBinding().to(TriangleBuilder.class);
shapeBinder.addBinding().to(SquareBuilder.class);

// Now you can inject Set<ShapeBuilder>.

---

我们可以这样做：-

@Override
protected void configure() {
    bind(ShapeBuilder.class).annotatedWith(Names.named("Circle")).to(CircleBuilder.class);
    bind(ShapeBuilder.class).annotatedWith(Names.named("Triangle")).to(TriangleBuilder.class);
    bind(ShapeBuilder.class).annotatedWith(Names.named("Square")).to(SquareBuilder.class);
}

在FormBuilder类中：-

class FormBuilder{
   List<ShapeBuilder> shapeBuilderList;
   @Inject
   public FormBuilder(@Named("Circle")ShapeBuilder circle, @Named("Triangle")ShapeBuilder triangle,@Named("Square")ShapeBuilder square){
       shapeBuilderList = new ArrayList<>();
       //add all of them
       shapeBuilderList.add(circle);
    }
}

类表单生成器{
列表shapeBuilderList；
@注入
公共表单生成器（@Named（“Circle”）ShapeBuilder Circle、@Named（“Triangle”）ShapeBuilder Triangle、@Named（“Square”）ShapeBuilder Square）{
shapeBuilderList=新的ArrayList（）；
//把它们全部加起来
shapeBuilderList.add（圆形）；
}
}

Note:multibinding需要另一个jar->guice-multibindings-3.0。jar我的问题（这里包括sofURL）显示了如何使用Mulitbinder，然后构造函数将“一组”具体注入到需要它们的类中（对于那些倾向于基于构造函数的注入的类）。这是多绑定用户指南的当前链接：@UzielSulkies六年过得真快！我已经更新了两个链接。谢谢你的邀请！

@Override
protected void configure() {
    bind(ShapeBuilder.class).annotatedWith(Names.named("Circle")).to(CircleBuilder.class);
    bind(ShapeBuilder.class).annotatedWith(Names.named("Triangle")).to(TriangleBuilder.class);
    bind(ShapeBuilder.class).annotatedWith(Names.named("Square")).to(SquareBuilder.class);
}

class FormBuilder{
   List<ShapeBuilder> shapeBuilderList;
   @Inject
   public FormBuilder(@Named("Circle")ShapeBuilder circle, @Named("Triangle")ShapeBuilder triangle,@Named("Square")ShapeBuilder square){
       shapeBuilderList = new ArrayList<>();
       //add all of them
       shapeBuilderList.add(circle);
    }
}