基于XML的DI-byType方式的域属性自动注入

傷城~ 2023-10-17 12:06 1阅读 0赞

### Spring基于XML的DI-byType方式的域属性自动注入 ###

### Student.java ###

package com.hk.spring.di08;
    
    public class Student {
        
    
        private String name;
        private int age;
        private School school;//域属性
        public void setName(String name) {
            this.name = name;
        }
        public void setAge(int age) {
            this.age = age;
        }
    
        public void setSchool(School school) {
            this.school = school;
        }
        @Override
        public String toString() {
            return "Student [name=" + name + ", age=" + age + ", school=" + school
                    + "]";
        }
    
    
    }

### School.java ###

package com.hk.spring.di08;
    
    public class School {
        
    
        private String schloolName;
    
        public void setSchloolName(String schloolName) {
            this.schloolName = schloolName;
        }
    
        @Override
        public String toString() {
            return "School [schloolName=" + schloolName + "]";
        }
    
    }

### applicationContext.xml ###

<?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">
    
        <bean id="myMchool" class="com.hk.spring.di08.School">
            <property name="schloolName" value="红林小学"/>
        </bean>
        
        <bean id="myStudent" class="com.hk.spring.di08.Student" autowire="byType">
            <property name="name" value="张三"/>
            <property name="age" value="9"/>
        </bean>
    </beans>

### MyTest.java ###

package com.hk.spring.di08;
    
    import org.junit.Test;
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    public class Mytest {
        @Test
        public void test1(){
            String resource = "com/hk/spring/di08/applicationContext.xml";
            ApplicationContext ac = new ClassPathXmlApplicationContext(resource);
            Student stu = (Student) ac.getBean("myStudent");
            System.out.println(stu);
    
        }
    }