spring properties配置文件 Spring导入properties配置文件代码示例
Y_wee 人气:0想了解Spring导入properties配置文件代码示例的相关内容吗,Y_wee在本文为您仔细讲解spring properties配置文件的相关知识和一些Code实例,欢迎阅读和指正,我们先划重点:spring,导入,properties,配置文件,下面大家一起来学习吧。
将外部属性文件的数据配置到bean的配置文件,依赖于context标签下的property-placeholder标签
1、准备properties文件
url=jdbc:mysql://localhost:3306/hibernate_db
username=root
password=1111
2、编写对应实体类
package com.yl.bean; public class DataSource { private String url; private String username; private String password; public DataSource() { } public String getUrl() { return url; } public void setUrl(String url) { this.url = url; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } @Override public String toString() { return "DataSource{" + "url='" + url + '\'' + ", username='" + username + '\'' + ", password='" + password + '\'' + '}'; } }
3、spring配置文件
<?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:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!--导入配置文件--> <context:property-placeholder location="classpath:db.properties"></context:property-placeholder> <!--DataSource--> <bean id="dataSource" class="com.yl.bean.DataSource"> <property name="password" value="${password}"></property> <property name="username" value="${username}"></property> <property name="url" value="${url}"></property> </bean> </beans>
4、测试
package com.yl; import com.yl.bean.DataSource; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class MainTest { public static void main(String[] args) { ApplicationContext applicationContext=new ClassPathXmlApplicationContext("bean1.xml"); DataSource dataSource= (DataSource) applicationContext.getBean("dataSource"); System.out.println(dataSource); } }
加载全部内容