currentServerAddr:http://localhost:8848， err : connect timed out

场景复现：

一：原配置文件application.yml

spring:
  cloud:
    nacos:
      config:
        server-addr: ${cas-wict-nacos-url}
        namespace: ${cas-wict-nacos-namespace}
        shared-configs:
          - data-id: mysql.properties
            refresh: true
          - data-id: mysql.properties
            refresh: true
          - data-id: job.properties
            refresh: true
      discovery:
        server-addr: ${cas-wict-nacos-url}
        namespace: ${cas-wict-nacos-namespace}
        cluster-name: failover
        metadata:
          protocol: rest

一直报错：currentServerAddr:http://localhost:8848， err : connect timed out

原因：老版本nacos一直优先读本地的bootstrap.properties, 导致application.yml的nacos没能读取到

解决办法：

新增一个bootstrap.properties配置，里面方nacos的配置