标签:spring
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:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <context:component-scan base-package="org.example"/> </beans>
调用xml文件代码
ApplicationContext ctx=new ClassPathXmlApplicationContext("beans.xml"); PersonService personService=(PersonService)ctx.getBean("personService"); personService.save();
personservicebean方法
package cn.cast.service.impl; import javax.annotation.Resource; import org.springframework.stereotype.Service; import cn.cast.service.PersonService; import cn.cast.dao.PersonDao; @Service public class PersonServiceBean implements PersonService { @Resource private PersonDao personDaoBean; public void show() { personDaoBean.show(); } public void setPersonDaoBean(PersonDao personDaoBean) { this.personDaoBean = personDaoBean; } public PersonDao getPersonDaoBean() { return personDaoBean; } }
package cn.cast.dao.impl; import org.springframework.stereotype.Repository; import cn.cast.dao.PersonDao; @Repository public class PersonDaoBean implements PersonDao { public void show() { System.out.println("执行PersonDaoBean中的add()方法"); } }
测试方法
package cn.cast.main; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import cn.cast.service.PersonService; public class Testmain { public static void main(String args[]){ ApplicationContext ctx=new ClassPathXmlApplicationContext("beans.xml"); PersonService personService=(PersonService)ctx.getBean("personServiceBean"); personService.show(); } }
--定义Bean的注解
@Controller
@Controller("Bean的名称")
定义控制层Bean,如Action
@Service
@Service("Bean的名称")
定义业务层Bean
@Repository
@Repository("Bean的名称")
定义DAO层Bean
@Component
定义Bean, 不好归类时使用.
--定义Bean的作用域和生命过程
@Scope("prototype")
值有:singleton,prototype,session,request,session,globalSession
@PostConstruct
相当于init-method,使用在方法上,当Bean初始化时执行。
@PreDestroy
相当于destory-method,使用在方法上,当Bean销毁时执行。
Spring 学习笔记 -beans 的自动扫描与装配和管理
标签:spring
原文地址:http://blog.csdn.net/haoliang94/article/details/45506603