Spring：IoC 用法（五、混合配置用法）

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

@Controllerpublic 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

@Repositorypublic 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）