Spring：IoC 用法（五、混合配置用法），springioc

Spring：IoC 用法（五、混合配置用法），springioc

混合配置

Java配置与XML配置交叉使用

1、多个Java配置类

1）、定义Bean

模拟工作中的业务请求：

定义Controller控制层

@Controller
public class TestController {

    @Autowired
    private TestRepository repository;

    // 测试注入方法
    public String testController() {
        return repository.testRepository();
    }
}

定义Repository数据层接口

public interface TestRepository {
    // 测试注入：调用方法
    String testRepository();
}

定义Repository数据层接口实现

@Repository
public class TestRepositoryImpl implements TestRepository {
    // 测试注入方法
    public String testRepository() {
        return "------------------------- >>> 获取数据成功!!";
    }
}

2）、Java配置注入

专门扫描 Controller 配置

@Configuration
@ComponentScan(basePackages = "test.define.controller")
public class ControllerConfig {
}

专门扫描 Repository 配置

@Configuration
@ComponentScan(basePackages = "test.define.repository")
public class RepositoryConfig {
}

组合以上两个配置

@Configuration
@Import({ControllerConfig.class,RepositoryConfig.class})
public class Config {
}

3）、测试代码

依赖

<properties>
	<spring.version>4.2.1.RELEASE</spring.version>
</properties>

<dependencies>
	<!-- Spring 依赖注入 -->
	<dependency>
		<groupId>org.springframework</groupId>
		<artifactId>spring-context</artifactId>
		<version>${spring.version}</version>
	</dependency>
	<!-- 仅测试 -->
	<dependency>
		<groupId>junit</groupId>
		<artifactId>junit</artifactId>
		<version>4.12</version>
	</dependency>
</dependencies>

测试类

public class Test {

    @org.junit.Test
    public void test() {
        AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(Config.class);
        TestController controller = context.getBean(TestController.class);
        String data = controller.testController();
        System.out.println("结果：" + data);
        context.close();
    }
}

结果

结果：------------------------- >>> 获取数据成功!!

2、多个XML配置文件

1）、定义Bean

（同上不变）

2）、XML配置注入

专门扫描Controller配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans 
       http://www.springframework.org/schema/beans/spring-beans.xsd 
       http://www.springframework.org/schema/context 
       http://www.springframework.org/schema/context/spring-context.xsd">

    <context:component-scan base-package="test.define.controller"/>

</beans>

专门扫描Repository配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans 
       http://www.springframework.org/schema/beans/spring-beans.xsd 
       http://www.springframework.org/schema/context 
       http://www.springframework.org/schema/context/spring-context.xsd">

    <context:component-scan base-package="test.define.repository"/>

</beans>

组合以上两个XML配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd">

    <import resource="ControllerConfig.xml"/>

    <import resource="RepositoryConfig.xml"/>

</beans>

3）、测试代码

依赖（不变）

测试类

public class Test {

    @org.junit.Test
    public void test1() {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring/spring.xml");
        TestController controller = context.getBean(TestController.class);
        String data = controller.testController();
        System.out.println("结果：" + data);
        context.close();
    }
}

结果（不变）

3、Java配置与XML配置（Java为主）

1）、定义Bean

（同上不变）

2）、配置

专门扫描Controller配置

@Configuration
@ComponentScan(basePackages = "test.define.controller")
public class ControllerConfig {
}

专门扫描Repository配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd">

    <context:component-scan base-package="test.define.repository"/>

</beans>

Java配置组合以上两个配置

@Configuration
@Import(ControllerConfig.class)
@ImportResource("classpath:spring/RepositoryConfig.xml")
public class Config {
}

3）、测试代码

依赖（不变）

测试类

public class Test {

    @org.junit.Test
    public void test() {
        AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(Config.class);
        TestController controller = context.getBean(TestController.class);
        String data = controller.testController();
        System.out.println("结果：" + data);
        context.close();
    }
}

结果（不变）

4、XML配置与Java配置用（XML为主）

1）、定义Bean

（同上不变）

2）、配置

专门扫描Controller配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd">

    <context:component-scan base-package="test.define.controller"/>

</beans>

专门扫描Repository配置

@Configuration
@ComponentScan(basePackages = "test.define.repository")
public class RepositoryConfig {
}

XML配置组合以上两个配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd">

    <import resource="ControllerConfig.xml"/>

    <bean class="test.config.RepositoryConfig"/>

</beans>

3）、测试代码

依赖（不变）

测试类

public class Test {

    @org.junit.Test
    public void test() {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring/spring.xml");
        TestController controller = context.getBean(TestController.class);
        String data = controller.testController();
        System.out.println("结果：" + data);
        context.close();
    }
}

结果（不变）