spring 安装和使用

项目管理工具：maven

denpendecy：spring-context

<dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-context</artifactId>        <version>4.1.5.RELEASE</version></dependency>

编写bean的xml描述文件。名称随意。

<?xml version="1.0" encoding="utf-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">    <bean id="sysoAction" class="spring.sysoAction">        <property name="ss" ref="syso"></property>    </bean>    <bean id="syso" class="spring.syso"></bean>    <!-- more bean definitions go here --></beans>

syso类

package spring;public class syso {    public void test(){        System.out.println("test");    }}

sysoAction类

package spring;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;public class sysoAction {    syso ss;    public syso getSs() {        return ss;    }    public void setSs(syso ss) {        this.ss = ss;    }    public void test(){        ss.test();    }    public static void main(String [] args){        ApplicationContext ctx=new ClassPathXmlApplicationContext("SpringBeans.xml");        sysoAction s=(sysoAction) ctx.getBean("sysoAction", sysoAction.class);        s.test();    }}

执行成功后会输出 test