Spring实战——组合属性

男娘i 2021-07-24 22:12 294阅读 0赞

**一 配置**

<?xml version="1.0" encoding="GBK"?>
    <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://www.springframework.org/schema/beans"
         xsi:schemaLocation="http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans-4.0.xsd">
         <bean id="exampleBean"  class="org.crazyit.app.service.ExampleBean">
               
               <property name="person.name" value="孙悟空"/>
         </bean>
    </beans>

**二 Bean**

Person

package org.crazyit.app.service;
    
    public class Person
    {
         private String name;
         // name的setter和getter方法
         public void setName(String name)
         {
               this.name = name;
         }
         public String getName()
         {
               return this.name;
         }
    }

ExampleBean

package org.crazyit.app.service;
    
    public class ExampleBean
    {
         // 定义一个Person类型的成员变量
         private Person person = new Person();
         // person的getter方法
         public Person getPerson()
         {
               return this.person;
         }
    }

**三 测试类**

package lee;
    
    
    import org.springframework.context.*;
    import org.springframework.context.support.*;
    
    
    import org.crazyit.app.service.*;
    
    public class BeanTest
    {
        public static void main(String[] args)
        {
            ApplicationContext ctx = new
                ClassPathXmlApplicationContext("beans.xml");
            ExampleBean b = ctx.getBean("exampleBean"
                , ExampleBean.class);
            System.out.println(b.getPerson().getName());
        }
    }

**四 测试结果**

孙悟空