Spring入門學習

什麼是Spring

Spring是容器框架，是用於配置bean和維護bean對象之間的關係
入門小例子
利用spring配置對象

第一步在工程中添加上spring的架包
spring.jar
common-logging.jar
第二步在工程中創建出來核心的配置文件applicationContext.xml（名字可以更改）

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://www.springframework.org/schema/beans"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
    <!-- 聲明對象 class 類的路徑-->
    <bean id="person" class="com.Service.Person">
    <!-- 聲明簡單的屬性，設置屬性值-->
        <property name="name" value="chen"/>
        <property name="age" value="20"/>
        <!-- 不再簡單的申明值 使用引用 即屬性是一個類對象-->
        <property name="mymoney" ref="mymoney" />
    </bean>
    <bean id="mymoney" class="com.Service.money">
        <property name="mymeny" value="58"/>
    </bean>
</beans>

javaBean類
person類

package com.Service;

public class Person {
    private String name;
    private String age;
    private money mymoney;
    public money getMymoney() {
        return mymoney;
    }
    public void setMymoney(money mymoney) {
        this.mymoney = mymoney;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getAge() {
        return age;
    }
    public void setAge(String age) {
        this.age = age;
    }
    public void Println(){
        System.out.println(getName()+"\t"+getAge());
    }

}

money類

package com.Service;

public class money {
    private String mymeny;

    public String getMymeny() {
        return mymeny;
    }

    public void setMymeny(String mymeny) {
        this.mymeny = mymeny;
    }
    public void say(){
        System.out.println(getMymeny());
    }
}

測試方法類

package com.Test;

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

import com.Service.Person;
import com.Utils.applicationContextUtil;
import com.inter.Change;

public class springPerson {

    public static void main(String[] args) {
    //聲明一個容器ac，讀取配置文件
        ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
        //使用容器ac獲取相應的bean對象
        Person per = (Person) ac.getBean("person");
        per.Println();
        per.setName("晨果");
        per.Println();
        per.getMymoney().say();
    }
}