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  • Spring中Bean的装配方式

    一、基于xml的装配

    Student.java

    package com.yh;
    
    public class Student implements People {
    
        public void breath() {
            System.out.println("呼吸");
        }
    }

    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"
        xmlns:p="http://www.springframework.org/schema/p"
        xmlns:context="http://www.springframework.org/schema/context"
        xsi:schemaLocation="http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
         http://www.springframework.org/schema/context
         http://www.springframework.org/schema/context/spring-context-4.1.xsd">
        
         <bean id="student" class="com.yh.Student"></bean>
    
    </beans>

    测试

    @Test
    public void demo01() {
        String xmlPath = "applicationContext.xml";
        ApplicationContext context = new ClassPathXmlApplicationContext(xmlPath);
        Student stu = (Student) context.getBean("student");
        stu.breath();
    }

    二、基于Annotation(注解)的装配

     Student,java

    package com.yh;
    
    import org.springframework.stereotype.Component;
    @Component
    public class Student implements People {
        
        public void breath() {
            System.out.println("呼吸");
        }
    }

    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"
        xmlns:p="http://www.springframework.org/schema/p"
        xmlns:context="http://www.springframework.org/schema/context"
        xsi:schemaLocation="http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
         http://www.springframework.org/schema/context
         http://www.springframework.org/schema/context/spring-context-4.1.xsd">
        
        <context:component-scan base-package="com.yh"></context:component-scan>
    
    </beans>

    测试

    @Test
    public void demo01() {
        String xmlPath = "applicationContext.xml";
        ApplicationContext context = new ClassPathXmlApplicationContext(xmlPath);
        Student stu = (Student) context.getBean("student");
        stu.breath();
    }
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  • 原文地址:https://www.cnblogs.com/YeHuan/p/11072651.html
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