java GUI要求绑定到TypeLiteral抛出错误
我有以下模块,需要重新绑定:
public class BillingModule extends AbstractModule {
@Override
protected void configure() {
bind(WalletBilling.class).to(WalletBillingService.class);
requireBinding(Key.get(new TypeLiteral<Map<String, String>>() {}, ResourceUrls.class));
}
@Provides
String returnUrls(@ResourceUrls Map<String, String> resourceUrls){
return resourceUrls.get("hello");
}
}
我注意到,当我运行实例化模块的代码时,出现以下错误:
线程“main”com中出现异常。谷歌。注射CreationException:Guice创建错误:
1) No implementation for java.util.Map<java.lang.String, java.lang.String> annotated with interface com.example.helloworld.annotations.ResourceUrls was bound.
at com.example.helloworld.modules.BillingModule.configure(BillingModule.java:32)
1 error
at com.google.inject.internal.Errors.throwCreationExceptionIfErrorsExist(Errors.java:435)
at com.google.inject.internal.InternalInjectorCreator.initializeStatically(InternalInjectorCreator.java:154)
at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:106)
at com.google.inject.Guice.createInjector(Guice.java:95)
at com.google.inject.Guice.createInjector(Guice.java:72)
at com.google.inject.Guice.createInjector(Guice.java:62)
at com.example.helloworld.Main.main(Main.java:52)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
我认为通过使用@ResourceUrls注释@Provides方法param,我已经满足了绑定的要求,但事实并非如此,我是Guice的noob,因此希望能提供一些指针
# 1 楼答案
您需要以某种方式提供地图,否则guice不知道从哪里获取地图。这样的办法应该行得通