【JavaWeb】Spring入门——HelloWorld

0.为什么要使用Spring

https://www.cnblogs.com/zmmi/p/7922186.html

1. 下载jar包

https://blog.csdn.net/qq_43540133/article/details/88357857参考此博客

2. 注意建立的是web项目

package com.tutorialspoint;

public class HelloWorld {
	 private String message;
	    public void setMessage(String message){
	       this.message  = message;
	    }
	    public void getMessage(){
	       System.out.println("Your Message : " + message);
	    }
}

　　

package com.tutorialspoint;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class MainApp {
	public static void main(String[] args) {
	       ApplicationContext context =
	            new ClassPathXmlApplicationContext("Beans.xml");
	       HelloWorld obj = (HelloWorld) context.getBean("helloWorld");
	       obj.getMessage();
	    }
}

　　

<?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-3.0.xsd">

   <bean id="helloWorld" class="com.tutorialspoint.HelloWorld">
       <property name="message" value="Hello World!"/>
   </bean>

</beans>