spring 读取配置文件,将值注入到静态字段

Posted 2020-11-01 爷的眼睛闪亮

resources/config/config-dev.properties

es.ip.node=xxxxxxx
cluster.name=xxxxxxx
client.transport.sniff=xxxxxxx

加载properties

<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="ignoreResourceNotFound" value="true"/>
    <property name="locations">
        <list>
            <value>classpath:config/config-${env}.properties</value>
        </list>
    </property>
</bean>

对应属性的bean

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

/**
 * <p>Description:读取properties文件</p>
 *
 * @Author: Austin
 **/
@Component
public class ESParams {
    public static String esIpNode;
    public static String clusterName;
    public static String clientTransportSniff;

    @Value("${es.ip.node}")
    public void setEsIpNode(String esIpNode) {
        ESParams.esIpNode = esIpNode;
    }

    @Value("${cluster.name}")
    public void setClusterName(String clusterName) {
        ESParams.clusterName = clusterName;
    }

    @Value("${client.transport.sniff}")
    public void setClientTransportSniff(String clientTransportSniff) {
        ESParams.clientTransportSniff = clientTransportSniff;
    }
}

注意:标颜色的地方,稍有不慎就少加或者写错,另外需要将自动生成setter的方法的修饰符static去掉，否则spring无法注入

现在可以在任何类中直接使用 ESParams.xxx 即可方便引用，如 ESParams.esIpNode 了