Springboot读取yml文件属性值 (非常方便)

1. yml配置

rocketmq:
    namesrvAddr: 192.168.10.142:9876
    producerGroup: SID-LLL
    sysConfig:
      topic: U_HOST_ConFIG
      tag: system_host

2. 在实体类中读取和使用

@Component
public class MqUtils {
    private static String namesrvAddr;
    private static String producerGroup;

    @Value("${rocketmq.namesrvAddr}")
    public void setNamesrvAddr(String namesrvAddr) {
        this.namesrvAddr = namesrvAddr;
    }
    @Value("${rocketmq.producerGroup}")
    public void setProducerGroup(String producerGroup) {
        this.producerGroup = producerGroup;
    }

   
    public DefaultMQProducer getProducer() throws Exception{
        if (producer == null){
            synchronized (MqUtils.class){
                if (producer == null){
                    LOGGER.info("group:{}", producerGroup);