问题:
当在一个单例Bean中注入一个多例Bean的时候,是获取不到那个多例对象的,因为,单例在初始化的时候,就直接初始化,这个多例Bean啦, 一直获取的是第一次初始化的Bean
配置文件:
<?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:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <bean id="single" class="com.lzd.spring.context.resource.test.bean.SingletonObject"> <property name="prototypeObject" ref="prototype"></property> </bean> <bean id="prototype" class="com.lzd.spring.context.resource.test.bean.PrototypeObject" scope="prototype"> <property name="name" value="刘东"></property> <property name="password" value="123"></property> <!-- <aop:scoped-proxy/> --> </bean></beans>
SingletonObject对象:
package com.lzd.spring.context.resource.test.bean;public class SingletonObject { private PrototypeObject prototype; public void setPrototypeObject(PrototypeObject prototype){ this.prototype = prototype; } public PrototypeObject getPrototype(){ return this.prototype; } }
PrototypeObject对象:
package com.lzd.spring.context.resource.test.bean;/*** * <P>Description: 这是一个多例的对象</P>* @ClassName: PrototypeObject* @author lzd 2017年2月15日 上午10:54:52*/public class PrototypeObject { private String name; private String password; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; }}
ApplicationResourceTest测试类:
package com.lzd.spring.context.resource.test;import org.junit.Test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.lzd.spring.context.resource.test.bean.SingletonObject;public class ApplicationResourceTest { @Test public void applicationResource(){ ApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"classpath:application.xml"}); SingletonObject s = (SingletonObject) context.getBean("single"); for (int i = 0; i < 10; i++) System.out.println(s.getPrototype()); } }
问题解决:
配置文件:
<?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:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <bean id="single" class="com.lzd.spring.context.resource.test.bean.SingletonObject"> <property name="prototypeObject" ref="prototype"></property> </bean> <bean id="prototype" class="com.lzd.spring.context.resource.test.bean.PrototypeObject" scope="prototype"> <property name="name" value="刘东"></property>
<property name="password" value="123"></property>
<!-- 添加下面,一行,每次创建的,都是一个代理对象,然后注入获取的都是新的对象 -->
<aop:scoped-proxy/> </bean></beans>
测试结果:
本文永久更新链接地址：http://www.xuebuyuan.com/Linux/2017-02/140685.htm
以上就上有关Spring单例Bean中注入多例Bean的相关介绍，要了解更多Spring注入Bean,单例Bean,多例Bean,Spring单例Bean中注入多例Bean,编程,Linux编程,Linux Shell,Android,Android教程,JAVA,C语言,Python,HTML5内容请登录学步园。