1、定义接口

package com.guice.providerInject;import com.google.inject.ProvidedBy;public interface Service {public void execute();
}

2、定义实现类

package com.guice.providerInject;public class OneService implements Service {@Overridepublic void execute() {System.out.println("Hello!  I'M Service 1!");}
}

3、Provider实现类

package com.guice.providerInject;import com.google.inject.Provider;/*** TODO : 每次新建一个新的OneService对象出来* * @author E468380*/
public class OneServiceProvider implements Provider<Service> {@Overridepublic Service get() {return new OneService();}}

4、ProviderServiceDemo 測试类

package com.guice.providerInject;import com.google.inject.Binder;
import com.google.inject.Guice;
import com.google.inject.Inject;
import com.google.inject.Module;/*** 使用上面OneServiceProvider来新建实例 当然假设想自己主动注入（不使用Module手动关联）服务的话。能够使用@ProviderBy注解。

* */

public class ProviderServiceDemo { @Inject private Service service; public static void main(String[] args) { ProviderServiceDemo instance = Guice.createInjector(new Module() { @Override public void configure(Binder binder) { binder.bind(Service.class).toProvider(OneServiceProvider.class); } }).getInstance(ProviderServiceDemo.class); instance.service.execute();// Hello! I'M Service 1! } }

5、ProviderServiceDemo2測试类

假设不想使用Module手动关联服务的话。能够使用@ProviderBy注解。

package com.guice.providerInject;import com.google.inject.ProvidedBy;@ProvidedBy(OneServiceProvider.class)
public interface Service {public void execute();
}

package com.guice.providerInject;import com.google.inject.Guice;public class ProviderServiceDemo2 {public static void main(String[] args) {ProviderServiceDemo2 instance = Guice.createInjector().getInstance(ProviderServiceDemo2.class);// instance.service.execute(); //发现不起作用不知何解 ？}
}

6、ProviderServiceDemo3測试类

package com.guice.providerInject;import com.google.inject.Binder;
import com.google.inject.Guice;
import com.google.inject.Inject;
import com.google.inject.Module;
import com.google.inject.Provider;/*** TODO :能够注入Provider而不是注入服务 * ◇因为我们OneServiceProvider每次都是构造一个新的服务出来，* 因此在类ProviderServiceDemo3中的provider每次获取的服务也是不一样的。* * @author E468380*/
public class ProviderServiceDemo3 {@Injectprivate Provider<Service> provider;public static void main(String[] args) {ProviderServiceDemo3 instance = Guice.createInjector(new Module() {@Overridepublic void configure(Binder binder) {binder.bind(Service.class).toProvider(OneServiceProvider.class);}}).getInstance(ProviderServiceDemo3.class);instance.provider.get().execute();// Hello! I'M Service 1!}
}