1.使用注解的方式需要配置applicationContext.xml:
<?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 https://www.springframework.org/schema/context/spring-context.xsd"> <context:component-scan base-package="org.yzytest1"></context:component-scan> <!--开启包扫描--> </beans>
2.将类交给Spring管理:
@Component("Demo1") //使用注解Component public class Demo1 { @Value("yzy") private String name; public void say(){ System.out.println("你好呀!"+name); } }
3.Spring的属性注入:
普通的属性注入,使用@Value属性注入:
@Component("Demo1") public class Demo1 { @Value("yzy") //使用注解Value,属性注入 private String name; public void say(){ System.out.println("你好呀!"+name); } }
复杂的属性注入,使用@Resource属性注入:
import org.springframework.stereotype.Component; import javax.annotation.Resource; @Component("Demo1") public class Demo1 { @Resource(name="User") //使用@Resource,属性注入对象 private User user; public void say(){ System.out.println("你好呀!"+user.getUsername()); } }
4.Spring的其他注解:
原文地址:https://www.cnblogs.com/shouyaya/p/12528040.html
时间: 2024-11-09 03:52:28