java 如何让 Guice 模块使用另一个 Guice 模块？
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How to have a Guice module use another Guice module?
提问by Noel Yap
Let's say I have a Guice module ProdModule that I would like to depend on other GuiceModules, ProdDbModule and ProdPubSubModule. How would I implement ProdModule's configure()?
假设我有一个 Guice 模块 ProdModule，我想依赖其他 GuiceModules、ProdDbModule 和 ProdPubSubModule。我将如何实现 ProdModule 的 configure()？
回答by Jeremy
回答by ColinD
While it can be convenient to use install, you don't even need to installthe other modules as long as you provide all the necessary modules when you create your Injector:
虽然使用起来很方便install，但你甚至不需要install其他模块，只要你在创建你的时候提供所有必要的模块Injector：
Injector injector = Guice.createInjector(new ProdDbModule(),
new ProdPubSubModule(), new ProdModule());
This can give you more flexibility to change out just one of these modules in your entry point class without needing to modify ProdModuleitself. You can also indicate in a module what bindings it requires other modules to provide using the requireBindingmethods.
这可以让您更灵活地更改入口点类中的这些模块之一，而无需修改ProdModule自身。您还可以在模块中指明它需要其他模块使用这些requireBinding方法提供哪些绑定。
回答by Alex
You can use Modules.combineto create a new module that contains all the other modules. (See this link)
您可以使用Modules.combine来创建一个包含所有其他模块的新模块。（见此链接）
The differences:
区别：
- this is not subject to tight coupling modules like
install() - this creates a
Modulerather than an injector, which means you can easily add different modules to the injector.
- 这不受紧耦合模块的影响，例如
install() - 这将创建一个
Module而不是注入器，这意味着您可以轻松地向注入器添加不同的模块。
Code
代码
import com.google.inject.util.Modules;
Module module = Modules.combine(new ProdDbModule(),
new ProdPubSubModule(), new ProdModule());
Injector injector = Guice.createInjector(module);
