後來發現我springboot的版本是2.2.0.RELEASE
降低到 2.0.8.RELEASE後就能註冊了,和nacos的官網說明:版本 0.2.x.RELEASE 對應的是 Spring Boot 2.x 版本，版本 0.1.x.RELEASE 對應的是 Spring Boot 1.x 版本有些偏差。
此處：nacos 1.1.4? 、
pom.xml如下
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns=".candy</groupId>
<artifactId>nacos-remotecall</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>nacos-remotecall</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
<junit.version>4.10</junit.version>
<spring-cloud.version>Finchley.SR2</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
<version>0.9.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
<version>2.0.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>