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  • IDEA配置spring

    大半天都在看spring,以前总是看不下去,这次慢慢来,慢慢看。

    看那些基础的,倒是还不错。好多都是关于helloworld的,写完helloworld,觉得不怎么形象。于是写了动物,作为接口。

    (1)动物接口方法:move(),say()。

    (2)cat和dog ,实现接口。

    package Animal;
    
    /**
     * Created with IntelliJ IDEA.
     * User: wang
     * Date: 13-10-22
     * Time: 下午5:12
     * To change this template use File | Settings | File Templates.
     */
    public class Cat implements Animal {
        @Override
        public void move() {
            //To change body of implemented methods use File | Settings | File Templates.
            System.out.println("4 legs");
        }
    
        @Override
        public void say() {
            //To change body of implemented methods use File | Settings | File Templates.
            System.out.println("miao  miao");
        }
    }

    (3)xml文件:

    <?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.xsd">
                 <bean id="cat" class="Animal.Cat" ></bean>
                 <bean id="dog" class="Animal.Dog"></bean>
                 <bean id="bird" class="Animal.Bird">
                     <constructor-arg index="0" value="gegegege"></constructor-arg>
                     <constructor-arg index="1" value="gogogo"></constructor-arg>
                 </bean>
    </beans>

    xml里面,有个constructor-arg ,这个是bird里面,构造方法参数。

    (4) Bird.java

    package Animal;
    
    /**
     * 带有参数的spring bean
     * Created with IntelliJ IDEA.
     * User: wang
     * Date: 13-10-22
     * Time: 下午6:09
     * To change this template use File | Settings | File Templates.
     */
    public class Bird implements Animal {
    
        private String message;
        private String movess;
        public Bird(String message,String movess){
             this.message=message;
             this.movess=movess;
        }
    
        @Override
        public void say() {
            //To change body of implemented methods use File | Settings | File Templates.
            System.out.println(message);
        }
    
        @Override
        public void move() {
            //To change body of implemented methods use File | Settings | File Templates.
            System.out.println(movess);
        }
    }

    构造方法里面,有两个参数,xml对应的有设置。

    (5) 然后测试一下,ATest.java

    package Animal;
    
    
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    /**
     * Created with IntelliJ IDEA.
     * User: wang
     * Date: 13-10-22
     * Time: 下午5:19
     * To change this template use File | Settings | File Templates.
     */
    public class ATest {
        public static void main(String args[]){
            ApplicationContext applicationContext=new ClassPathXmlApplicationContext("spring-config.xml");
            Animal animal=applicationContext.getBean("cat",Cat.class);
            animal.say();
            animal.move();
            Animal animal1=applicationContext.getBean("dog",Dog.class);
            animal1.say();
            animal1.move();
            Animal animal2=applicationContext.getBean("bird",Bird.class);
            animal2.say();
            animal2.move();
        }
    }

    这突出了面向接口编程了。

    总之还不错,看了一些,挺不错的。

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  • 原文地址:https://www.cnblogs.com/juepei/p/3382955.html
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