从官网下载nacos：2.0.3，官网地址：https://github.com/alibaba/nacos/releases
本来想下最新的2.0.4，但是github一直下载失败，就下了2.0.3版本的。
解压后直接运行nacos/bin/startup.cmd，报错： Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
解决方法：先把cluster集群启动模式，改成单机模式，修改startup.cmd文件
rem set MODE="cluster"
set MODE="standalone"再启动服务，继续报错如下
Error creating bean with name 'instanceOperatorClientImpl' defined in URL [jar:file:/D:/JAVAWEB/nacos服务/target/nacos-server.jar!/BOOT-INF/lib/nacos-naming-2.0.3.jar!/com/alibaba/nacos/naming/core/InstanceOperatorClientImpl.class]: Unsatisfied dependency expressed through constructor parameter 1; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'clientOperationServiceProxy' defined in URL [jar:file:/D:/JAVAWEB/nacos服务/target/nacos-server.jar!/BOOT-INF/lib/nacos-naming-2.0.3.jar!/com/alibaba/nacos/naming/core/v2/service/ClientOperationServiceProxy.class]: Unsatisfied dependency expressed through constructor parameter 1; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'persistentClientOperationServiceImpl' defined in URL [jar:file:/D:/JAVAWEB/nacos服务/target/nacos-server.jar!/BOOT-INF/lib/nacos-naming-2.0.3.jar!/com/alibaba/nacos/naming/core/v2/service/impl/PersistentClientOperationServiceImpl.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.alibaba.nacos.naming.core.v2.service.impl.PersistentClientOperationServiceImpl]: Constructor threw exception; nested exception is java.lang.IllegalStateException: Fail to init node, please see the logs to find the reason.把网上各种方式尝试一遍都不好用，最后对比1.4.3版本的能正常启动的，发现是项目路径上有中文，修改路径在启动，一切正常。
参考链接：https://www.cnblogs.com/rookiemzl/p/13814919.html