感谢各位大佬

感谢各位大佬，哈哈

解决了，是 jar 包中文件有缺失，我用镜像下载过来的 jar 包少了一些文件。后面在别人那里考了一个过来，在运行就好了。之前也考过来试了，可能细节没做好还是报错了，所以给忽略了

Caused by: java.lang.NoClassDefFoundError: reactor/retry/Repeat
at java.lang.Class.getDeclaredMethods0(Native Method) ~[na:1.8.0_211]
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) ~[na:1.8.0_211]
at java.lang.Class.getDeclaredMethods(Class.java:1975) ~[na:1.8.0_211]
at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:489) ~[spring-core-5.1.6.RELEASE.jar:5.1.6.RELEASE]
... 39 common frames omitted
Caused by: java.lang.ClassNotFoundException: reactor.retry.Repeat
at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[na:1.8.0_211]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_211]
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) ~[na:1.8.0_211]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_211]
... 43 common frames omitted

Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'routeDefinitionRouteLocator' defined in class path resource [org/springframework/cloud/gateway/config/GatewayAutoConfiguration.class]:
Unsatisfied dependency expressed through method 'routeDefinitionRouteLocator' parameter 1;
nested exception is org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'retryGatewayFilterFactory' defined in class path resource [org/springframework/cloud/gateway/config/GatewayAutoConfiguration.class]: Post-processing of merged bean definition failed; nested exception is java.lang.IllegalStateException:
Failed to introspect Class [org.springframework.cloud.gateway.filter.factory.RetryGatewayFilterFactory] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2]

@LangInteger 抱歉，刚看到

需要哪些细节我后续上传，我感觉报错原因主要是在这里，所以就传了这个报错信息