第一步：创建工程 FirstSpringJAVA
第二步：新建dao层类
Dao.java
package com.xuzhiwen.spring10; public class Dao { public void save(){ System.out.println("Dao.save()..."); } }第三步：新建service类,将dao通过set的方式注入到 service中
ServiceTest.java
package com.xuzhiwen.spring10; public class ServiceTest { private Dao dao; public void setDao(Dao dao) { this.dao = dao; } public void service(){ System.out.println("ServiceTest.service()..."); dao.save(); } }第四步：测试 <ref bean=" "> ,可以在两个配置文件中使用
applicationContext10.xml
<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-3.0.xsd"> <bean id="service" class="com.xuzhiwen.spring10.ServiceTest"> <property name="dao"> <ref bean="dao" /> </property> </bean> </beans>applicationContext11.xml
<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-3.0.xsd"> <bean id="dao" class="com.xuzhiwen.spring10.Dao" /> </beans>第五步：编写测试类
Test.java
package com.xuzhiwen.spring10; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class Test { public static void main(String[] args) { String xml[] = {"applicationContext10.xml","applicationContext11.xml"}; ApplicationContext app = new ClassPathXmlApplicationContext(xml); ServiceTest test = (ServiceTest) app.getBean("service"); test.service(); } }第六步：运行结果如下
第七步： 测试 <ref local=" ">,只能在同一个配置文件中使用
applicationContext10.xml
<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-3.0.xsd"> <bean id="service" class="com.xuzhiwen.spring10.ServiceTest"> <property name="dao"> <ref local="dao" /> </property> </bean> <bean id="dao" class="com.xuzhiwen.spring10.Dao" /> </beans>
第八步： 编写测试类
Test.java
package com.xuzhiwen.spring10; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class Test { public static void main(String[] args) { String xml[] = {"applicationContext10.xml"}; ApplicationContext app = new ClassPathXmlApplicationContext(xml); ServiceTest test = (ServiceTest) app.getBean("service"); test.service(); } }第九步：运行结果如下
转载于:https://www.cnblogs.com/beibidewomen/p/7388040.html
