观看慕课moocer老师视频Spring Bean装配之Autowire注解说明-7
2024-06-05 09:45:29
基于泛型自动装配：
package com.imooc.beanannotation.javabased;import org.springframework.beans.factory.annotation.Autowired;
//import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportResource;
import org.springframework.context.annotation.Scope;@Configuration
@ImportResource("classpath:config.xml")
public class StoreConfig {/*@Value("${url}")private String url;@Value("${jdbc.username}")private String username;@Value("${password}")private String password;@Beanpublic MyDriverManager myDriverManager(){return new MyDriverManager(url,username,password);}*//*@Bean(name="stringStore",initMethod="init",destroyMethod="destroy")public Store stringStore(){return new StringStore();}*//*@Bean(name="stringStore")@Scope(value="prototype")public Store stringStore(){return new StringStore();}*/@Autowiredprivate Store<String> s1;@Autowiredprivate Store<Integer> s2;@Beanpublic StringStore stringStore(){return new StringStore();}@Beanpublic IntegerStore integerStore(){return new IntegerStore();}@Bean(name="stringStoreTest")public Store stringStoreTest(){System.out.println("s1:"+s1.getClass().getName());System.out.println("s2:"+s2.getClass().getName());return new StringStore();
}
}
package com.imooc.test.beanannotation;import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.BlockJUnit4ClassRunner;import com.imooc.beanannotation.javabased.MyDriverManager;
import com.imooc.beanannotation.javabased.Store;
import com.imooc.ioc.interfaces.UnitTestBase;@RunWith(BlockJUnit4ClassRunner.class)
public class TestJavabased extends UnitTestBase {public TestJavabased(){super("classpath*:spring-beanannotation.xml");
}@Testpublic void test(){Store store=super.getBean("stringStore");System.out.println(store.getClass().getName());;}@Testpublic void testMyDriverManager(){MyDriverManager manager=super.getBean("myDriverManager");System.out.println(manager.getClass().getName());;}@Testpublic void testScope(){Store store=super.getBean("stringStore");System.out.println(store.hashCode());store=super.getBean("stringStore");System.out.println(store.hashCode());}@Testpublic void testG(){Store store=super.getBean("stringStoreTest");
}
}package com.imooc.beanannotation.javabased;public class StringStore implements Store<String> {public void init(){System.out.println("This is init.");}public void destroy(){System.out.println("This is destroy.");}
}
package com.imooc.beanannotation.javabased;public interface Store<T> {}
package com.imooc.beanannotation.javabased;public class IntegerStore implements Store<Integer> {}
运行结果：
基于集合方式自动装配：
package com.imooc.beanannotation.javabased;import org.springframework.stereotype.Component;@Component
public class IntegerStore implements Store<Integer> {}
package com.imooc.beanannotation.javabased;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;@Component
public class Com<T> {@Autowiredprivate List<Store<Integer>> list;public void say(){if(null!=list){for(Store<Integer> bean:list){System.out.println(bean.getClass().getName());//getClass().getName()是用来返回Class对象所代表的具体对象的名称。}}else{System.out.println("List<Store<Integer>> list is null");}}}
package com.imooc.beanannotation.javabased;public interface Store<T> {}
package com.imooc.test.beanannotation;import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.BlockJUnit4ClassRunner;import com.imooc.beanannotation.javabased.Com;
import com.imooc.beanannotation.javabased.MyDriverManager;
import com.imooc.beanannotation.javabased.Store;
import com.imooc.ioc.interfaces.UnitTestBase;@RunWith(BlockJUnit4ClassRunner.class)
public class TestJavabased extends UnitTestBase {public TestJavabased(){super("classpath*:spring-beanannotation.xml");
}@Testpublic void test(){Store store=super.getBean("stringStore");System.out.println(store.getClass().getName());;}@Testpublic void testMyDriverManager(){MyDriverManager manager=super.getBean("myDriverManager");System.out.println(manager.getClass().getName());;}@Testpublic void testScope(){Store store=super.getBean("stringStore");System.out.println(store.hashCode());store=super.getBean("stringStore");System.out.println(store.hashCode());}@Testpublic void testG(){Com com=super.getBean("com");com.say();
}
}运行结果：
自定义qualifier
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