Introduction to the use of Google Guice example illustration

This article simply introduces the use of Google Guice by example, and we can see from the example below that the use of Google Guice is very simple.

Google Guice needs to use the Java environment above JDK1.5.

After downloading Google Guice,

There are several documents:

Aopalliance.jar

Guice-1.0.jar

Guice-servlet-1.0.jar

Guice-spring-1.0.jar

Guice-struts2-plugin-1.0.jar

This example uses only the Guice-1.0.jar file to add it to the class path.

Here is a brief example:

Example 1: Implementing a class using the Com.google.inject.Module interface

Filename	Description
Helloguice.java	Business logic Interface Definition file
Helloguiceimpl.java	Business logic Interface Implementation file
Helloguicemodule.java	The file must implement the Com.google.inject.Module interface
Testguice.java	Test files

Helloguice.java





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package com.test.guice;





public interface Helloguice {


public void SayHello ();


}





package com.test.guice;





public interface Helloguice {


public void SayHello ();


}





Helloguiceimpl.java





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package com.test.guice;





public class Helloguiceimpl implements Helloguice {





public void SayHello () {


System.out.println ("Hello guice!");


　　}


}





package com.test.guice;





public class Helloguiceimpl implements Helloguice {





public void SayHello () {


System.out.println ("Hello guice!");


　　}


}





Helloguicemodule.java





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package com.test.guice;





import Com.google.inject.Binder;


Import Com.google.inject.Module;





public class Helloguicemodule implements Module {





public void Configure (Binder Binder) {


Binder.bind (Helloguice.class). to (Helloguiceimpl.class);


　　}





}





package com.test.guice;





import Com.google.inject.Binder;


import Com.google.inject.Module;





public class Helloguicemodule implements Module {





public void Configure (Binder Binder) {


Binder.bind (Helloguice.class). to (Helloguiceimpl.class);


　　}





}





Testguice.java





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package com.test.guice;





import junit.framework.TestCase;





import Com.google.inject.Guice;


Import Com.google.inject.Injector;





public class Testguice extends TestCase {


public void Testhelloguice () {


Injector Injector = guice.createinjector (New Helloguicemodule ());





Helloguice helloguice = injector.getinstance (Helloguice.class);


Helloguice.sayhello ();


　　}


}





package com.test.guice;





import junit.framework.TestCase;





import Com.google.inject.Guice;


import Com.google.inject.Injector;





public class Testguice extends TestCase {


public void Testhelloguice () {


Injector Injector = guice.createinjector (New Helloguicemodule ());





Helloguice helloguice = injector.getinstance (Helloguice.class);


Helloguice.sayhello ();


　　}


}