Java学习笔记-Spring IoC 通过XML把Bean给IoC容器
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Java学习笔记-Spring IoC 通过XML把Bean给IoC容器
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運行截圖如下:
程序結構:
源碼如下:
Bean.java
package springioc.demo.bean;public class Bean {public Bean(){System.out.println("bean.Bean");} }spring.xml
<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"><bean id="bean" class="springioc.demo.bean.Bean"/></beans>DemoApplicationTests.java
package springioc.demo;import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import org.springframework.test.context.junit4.SpringRunner; import springioc.demo.bean.Bean;@RunWith(SpringRunner.class) @SpringBootTest public class DemoApplicationTests {@Testpublic void contextLoads() {ApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");Bean bean = context.getBean("bean", Bean.class);System.out.println("bean = " + bean);}}porn.xml
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>1.5.19.RELEASE</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>SpringIoc</groupId><artifactId>demo</artifactId><version>0.0.1-SNAPSHOT</version><name>demo</name><description>Demo project for Spring Boot</description><properties><java.version>1.8</java.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>4.3.22.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>4.3.11.RELEASE</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>?
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