用JSR的@Inject代替@Autowired完成自动装配

从spring3.0开始spring支持JSR-330 的标准注解。主要是javax.inject这个包下的：

下面的例子用@Inject代替@Autowired。完成自动装配：

MovieFinder的代码如下：

package com.timo.demo;

import org.springframework.stereotype.Component;

@Component

public class MovieFinder {

    private String name;

    public void findMovies(){

        System.out.println("1,2,3");

    }

}

SimpleMovieLister的代码如下：

package com.timo.demo;

import org.springframework.stereotype.Component;

import javax.inject.Inject;

import javax.inject.Provider;

@Component

public class SimpleMovieLister {

    @Inject

    private Provider<MovieFinder> movieFinder;

    public void setMovieFinder(Provider<MovieFinder> movieFinder) {

        this.movieFinder = movieFinder;

    }

    public void listMovies(){

        movieFinder.get().findMovies();;

    }

}

配置类的代码如下：

package com.timo.demo;

import org.springframework.context.annotation.ComponentScan;

@ComponentScan(basePackageClasses = DemoAppConfig.class)

public class DemoAppConfig {

}

测试类的代码如下：

package com.timo.demo;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;

public class Test {

    public static void main(String[] args) {

        AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(DemoAppConfig.class);

        SimpleMovieLister movieLister = applicationContext.getBean(SimpleMovieLister.class);

        movieLister.listMovies();

    }

}