Naocs 配置中心报错问题

 Nacos 配置：

 

Spring Cloud Version	Spring Cloud Alibaba Version	Spring Boot Version
Spring Cloud Hoxton.SR8	2.2.3.RELEASE	2.3.2.RELEASE
Spring Cloud Greenwich.SR6	2.1.3.RELEASE	2.1.13.RELEASE
Spring Cloud Hoxton.SR8	2.2.2.RELEASE	2.3.2.RELEASE
Spring Cloud Hoxton.SR3	2.2.1.RELEASE	2.2.5.RELEASE
Spring Cloud Hoxton.RELEASE	2.2.0.RELEASE	2.2.X.RELEASE
Spring Cloud Greenwich	2.1.2.RELEASE	2.1.X.RELEASE
Spring Cloud Finchley	2.0.3.RELEASE	2.0.X.RELEASE
Spring Cloud Edgware	1.5.1.RELEASE(停止维护，建议升级)	1.5.X.RELEASE

pom.xml文件添加包：

<!--nacos-config-->
<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
</dependency>

<!--nacos-discovery-->
<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>

　　

bootstrap.yml优先于application.yml

bootstrap.yml配置：

server:
  port: 3377

spring:
  application:
    name: nacos-config-client
  cloud:
    nacos:
      discovery:
        server-addr: localhost:8848 # 服务注册中心地址
      config:
        server-addr: localhost:8848 #配置中心地址
        file-extension: yaml #指定yaml格式的配置
        #group: TEST_GROUP #默认：DEFAULT_GROUP
        #namespace: 00ab1957-eb3f-4555-96ca-3d20817e854d #命名空间id 默认：public

# ${spring.application.name}-${spring.profile.active}.${spring.cloud.nacos.config.file-extension}
# nacos-config-client-dev.yaml

application.yml配置：

spring:
  profiles:
    active: dev # 表示激活开发环境

　　类配置：

import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;


@RestController
@RefreshScope //支持controller的动态刷新
public class ConfigClientController
{
    @Value("${config.info}")
    private String configInfo;

    @GetMapping("/config/info")
    public String getConfigInfo() {
        return configInfo;
    }
}

　　启动类：

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;


@EnableDiscoveryClient
@SpringBootApplication
public class NacosConfigClientApp {

    public static void main(String[] args) {
        SpringApplication.run(NacosConfigClientApp.class,args);
    }
}