SpringContext

Java继承与Spring框架整合示例

最新推荐文章于 2025-11-30 18:24:05 发布

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本文展示了Java中抽象类的使用以及如何在Spring框架下整合子类，通过实例演示了抽象类方法的覆盖与特定行为实现。

SuperTest.java

package com.dxy.spring;

public abstract class SuperTest {

	public void first(){
		second();
	}
	
	public abstract void second();
	
	public void system1(){
		System.out.println("i just test");
	}
	
	public void system2(){
		System.out.println("it is good!");
	}
}

Child1.java

package com.dxy.spring;


public class Child1 extends SuperTest {

	@Override
	public void second() {
		system1();
	}

}

Child2.java

package com.dxy.spring;


public class Child2 extends SuperTest {

	@Override
	public void second() {
		system2();
	}

}

spring-base.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"
	xmlns:tx="http://www.springframework.org/schema/tx" 
	xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:jaxws="http://cxf.apache.org/jaxws" 
	xsi:schemaLocation="http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context.xsd
	http://www.springframework.org/schema/tx
	http://www.springframework.org/schema/tx/spring-tx.xsd
	http://www.springframework.org/schema/aop
	http://www.springframework.org/schema/aop/spring-aop.xsd
	http://cxf.apache.org/jaxws
    http://cxf.apache.org/schemas/jaxws.xsd"
	default-lazy-init="false">
	<bean id="child1" class="com.dxy.spring.Child1"></bean>
    <bean id="child2" class="com.dxy.spring.Child2"></bean>
	</beans>

SpringContext.java

package com.dxy.spring;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ApplicationObjectSupport;
import org.springframework.context.support.ClassPathXmlApplicationContext;


public class SpringContext extends ApplicationObjectSupport {
	
	private static ApplicationContext beanAccessor;
	
	public SpringContext(){
		beanAccessor=new ClassPathXmlApplicationContext("spring-base.xml");
	}
	
	public static<T> T getBean(String beanName,Class<T> requiredType)throws Exception{
		try{
			return beanAccessor.getBean(beanName,requiredType);
		}catch(Exception e){
			e.printStackTrace();
			throw new Exception(e.getMessage());
		}
	}
	

}

SpringContextTest.java

package com.dxy.spring;


public class SpringContextTest {

	/**
	 * @param args
	 * @throws Exception 
	 */
	public static void main(String[] args) throws Exception {
       SpringContext sc=new SpringContext();
       SuperTest st=sc.getBean("child1", SuperTest.class);
       st.first();
       System.out.println("***************");
       SuperTest superTest=sc.getBean("child2",SuperTest.class);
       superTest.first();
       
	}

}

结果：

i just test
***************
it is good!