spring读取properties文件

小咪咪 2022-06-12 13:46 237阅读 0赞

# spring读取properties文件 #

## 配置文件中加载properties文件 ##

标签，可以用来加载properties配置文件，location是配置文件的路径。

jdbc.driverClassName=com.mysql.jdbc.Driver
    jdbc.url=jdbc:mysql://localhost:3306/test?user=root&password=123456&useUnicode=true&characterEncoding=UTF-8

<context:property-placeholder location="classpath:mysql.properties"/>
    
        <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
            <property name="driverClassName" value="${jdbc.driverClassName}"/>
            <property name="url" value="${jdbc.url}"/>
            ...
        </bean>

## 代码中取properties文件中的值 ##

使@Value注解取值。

task.cron.clean_token=0 0 3 * * ?

<?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">
    
        <bean id="appProperty" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
            <property name="locations">
                <array>
                    <value>classpath:config/property/task_schedule.properties</value>
                </array>
            </property>
        </bean>
        
        
                
    </beans>

public class TokenClearJob implements SchedulingConfigurer { 
        @Value("${task.cron.clean_token}")
        private String TASK_CRON_CLEAN_TOKEN;
      ...
    }