体验spring(二)---springIOC

spring IOC注入

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IOC的三种依赖注入的方式：第一种：setter方法注射 spring中常用的方式public class GreetingServiceImpl implements GreetingService{ private String name; private String say;public GreetingServiceImpl(String name,String say) {this.name = name;this.say=say;}@Overridepublic void say() {System.out.println("I want to say"+name+"。。。。。。"+say);}public void setSay(String say) {this.say = say;}}<beans><bean id="greetingServiceImpl" class="cn.csdn.service.GreetingServiceImpl"><!-- 构造器的类型注入 --><constructor-arg type="java.lang.String"><value>晓丽</value></constructor-arg><constructor-arg type="java.lang.String"><value>我还好</value></constructor-arg></bean></beans>3、通过接口注入（没有实例）?

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