Spring开发实战

妖狐艹你老母 2021-09-30 13:24 311阅读 0赞

**一 新建Spring项目并引入Spring支持**

参考： [https://blog.csdn.net/chengqiuming/article/details/98350633][https_blog.csdn.net_chengqiuming_article_details_98350633]

**二 新建Person接口**

package com.bean;
    public interface Person
    {
         public void Speak(); // 接口中包含一个Speak()方法，表示人都可以说话
    }

**二 新建该接口的两个实现类ChineseImpl和AmericanImpl**

ChineseImpl

package com.bean;
    
    public class ChineseImpl implements Person
    {
        private String name;
        private int age;
        
        public String getName()
        {
            return name;
        }
        public void setName(String name)
        {
            this.name = name;
        }
        public int getAge()
        {
            return age;
        }
        public void setAge(int age)
        {
            this.age = age;
        }
        @Override
        public void Speak()
        {
            System.out.println("I'm Chinese,  My name is " + this.name + ", I'm " + this.age + " years old!");
        }
    }

AmericanImpl

package com.bean;
    
    public class AmericanImpl implements Person
    {
        private String name;
        private int age;
        
        public String getName()
        {
            return name;
        }
        public void setName(String name)
        {
            this.name = name;
        }
        public int getAge()
        {
            return age;
        }
        public void setAge(int age)
        {
            this.age = age;
        }
        @Override
        public void Speak()
        {
            System.out.println("I'm American, My name is " + this.name + ", I'm " + this.age + " years old!");
        }
    }

**三 编写applicationContext.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:p="http://www.springframework.org/schema/p"
         xmlns:aop="http://www.springframework.org/schema/aop"
         xsi:schemaLocation="http://www.springframework.org/schema/beans
               http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
               http://www.springframework.org/schema/aop
               http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
               
         <bean id="chinese" class="com.bean.ChineseImpl">
               <property name="name">
                    <value>xiaoming</value>
               </property>
               
               <property name="age">
                    <value>30</value>
               </property>
         </bean>
         
         <bean id="american" class="com.bean.AmericanImpl">
               <property name="name">
                    <value>John</value>
               </property>
               
               <property name="age">
                    <value>20</value>
               </property>
         </bean>
    </beans>

它告知容器如何对ChineseImpl和AmericanImpl两个类进行配置

**四 新建测试类**

package com.spring;
    import org.springframework.context.ApplicationContext;
    import  org.springframework.context.support.ClassPathXmlApplicationContext;
    import com.bean.Person;
    public class Test
    {
         public static void main(String[] args)
         {
               ApplicationContext context=new  ClassPathXmlApplicationContext("applicationContext.xml"); // 创建Spring容器
               
               Person person=(Person)context.getBean("chinese"); //  获取ChineseImpl实例的引用
               person.Speak();                                   // 调用ChineseImpl实例的Speak()方法
               
               person=(Person)context.getBean("american");       //  获取AmericanImpl实例的引用
               person.Speak();                                   // 调用AmericanImpl实例的Speak()方法
         }
    }

**五 测试**

I'm Chinese,  My name is xiaoming, I'm 30 years old!
    I'm American, My name is John, I'm 20 years old!

[https_blog.csdn.net_chengqiuming_article_details_98350633]: https://blog.csdn.net/chengqiuming/article/details/98350633