Properties
类表示了一个持久的属性集。Properties
可保存在流中或从流中加载。属性列表中每个键及其对应值都是一个字符串。在spring中可以用其存储连接数据库的相关信息。
DataSource.java
package com.gong.spring.beans; import java.util.Properties; public class DataSource { private Properties properties; public Properties getProperties() { return properties; } public void setProperties(Properties properties) { this.properties = properties; } @Override public String toString() { return "DataSource [properties=" + properties + "]"; } }
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 http://www.springframework.org/schema/beans/spring-beans.xsd"> <bean id="dataSource" class="com.gong.spring.beans.DataSource"> <property name="properties"> <props> <prop key="user">root</prop> <prop key="password">123456</prop> <prop key="jdbcUrl">jdbc:mysql:///test</prop> <prop key="driverClass">com.mysql.jdbc.Driver</prop> </props> </property> </bean> </beans>
Main.java
package com.gong.spring.beans; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class Main { public static void main(String[] args) { //1.创建spring的IOC容器对象 ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml"); //2.从容器中获取Bean实例 DataSource dataSource = (DataSource) ctx.getBean("dataSource"); System.out.println(dataSource.toString()); } }
输出:
原文地址:https://www.cnblogs.com/xiximayou/p/12150274.html
时间: 2024-11-09 02:20:55