Spring系列【04】应用@Autowired注解实现Bean的注入

User.java

package cn.com.xf;

public class User {
    private String name;
    private int age;
    private String remark;

        //省略setter/getter方法

    @Override
    public String toString() {
        return "User [name=" + name + ", age=" + age + ", remark=" + remark
                + "]";
    }

}    

UserUtil.java

package cn.com.xf;
//注意引入此包
import org.springframework.beans.factory.annotation.Autowired;

public class UserUtil {
    @Autowired   //自动装配
    private User user;

    public User getUser() {
        return user;
    }

    public void setUser(User user) {
        this.user = user;
    }

    public boolean isUser() {
        if (user != null) {
            return true;
        } else {
            return false;
        }
    }

}

Spring.xml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:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">
  <!--这个Bean注意了。。。-->
    <bean
        class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor">
    </bean>
    <bean id="user" class="cn.com.xf.User">
        <property name="name" value="jikoy"></property>
        <property name="age" value="28"></property>
        <property name="remark" value="this is remark245"></property>
    </bean>
    <bean id="userUtil" class="cn.com.xf.UserUtil"></bean>
</beans>

以上已经实现了自动装配功能,本节已对注解有了初步认识,后面我们将对注解进行全面的学习。

本节的测试类与前几节一样,后面的内容,我们重新定义类,老是User,大家都烦了吧!!!

posted @ 2014-12-14 12:02  jikoy chiu  阅读(456)  评论(0编辑  收藏  举报