Spring总结（二）--基于注解的配置

Spring基于注解的配置

导包，基于注解的配置比xml的新版本需要在多盗图一个aop的包
@Test
public void test(){
ApplicationContext ac=new ClassPathXmlApplicationContext("applicationContext.xml");
User user = (User) ac.getBean("user");

System.out.println(user);
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd ">
<context:component-scan base-package="cn.itcast.bean"></context:component-scan>
</beans>

package cn.itcast.bean;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.annotation.Resource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;

@Component("user")
@Scope(scopeName="singleton")
public class User {

private int id;
@Value("三毛")
private String name;
@Value("男")
private String sex;
//@Autowired
@Resource(name="car")
//@Qualifier("car")
private Car car;
public User(){System.out.println("无参构造方法创建！！");}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
@Override
public String toString() {
return "User [id=" + id + ", name=" + name + ", sex=" + sex + ", car=" + car + "]";
}
@PostConstruct
public void init(){
System.out.println("方法初始化！");
}
@PreDestroy
public void destory(){
System.out.println("方法销毁！！");
}
}

package cn.itcast.bean;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component("car")
public class Car {

@Value("玛莎拉蒂")
private String name;
@Value("yellow")
private String color;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getColor() {
return color;
}
public void setColor(String color) {
this.color = color;
}
@Override
public String toString() {
return "Car [name=" + name + ", color=" + color + "]";
}

}