技術標籤：Spring學習筆記javaspringmaven

Spring學習筆記——第二部分 HelloSpring

• 1. 配置檔案
• 2. 實體類
• 3. 測試

1. 配置檔案

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"
 

       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id="hello" class="com.zhang.pojo.Hello">
        <property name="str" value="Spring"/>
    </
 
bean>

</beans>

2. 實體類

package com.zhang.pojo;

public class Hello {
    private String str;

    public void setStr(String str) {
        this.str = str;
    }

    public String getStr() {
        return str;
    }

    @Override
    public String toString(){
        return "Hello{"
 
 +
                "str='" + str +"\'" +
                "}";
    }
}

3. 測試

public static void main(String[] args) {
    //獲取Spring的上下文物件
    ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
    //我們的物件都在Spring中管理，需要時取出即可
    Hello hello = (Hello) context.getBean("hello");
    System.out.println(hello);
}