SpringCloud-关于引入seata出现的问题

使用springcloud引入seata的时候，
导入依赖

<dependency>
    <groupId>com.alibaba.cloudgroupId>
    <artifactId>spring-cloud-starter-alibaba-seataartifactId>
dependency>

出现了以下问题

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'seataBeanPostProcessor' defined in class path resource [com/alibaba/cloud/seata/feign/SeataFeignClientAutoConfiguration$FeignBeanPostProcessorConfiguration.class]: Unsatisfied dependency expressed through method 'seataBeanPostProcessor' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'seataFeignObjectWrapper' defined in class path resource [com/alibaba/cloud/seata/feign/SeataFeignClientAutoConfiguration$FeignBeanPostProcessorConfiguration.class]: Post-processing of merged bean definition failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [com.alibaba.cloud.seata.feign.SeataFeignObjectWrapper] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2]
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:541) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1179) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:571) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:213) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:244) ~[spring-context-5.3.2.jar:5.3.2]
	at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:767) ~[spring-context-5.3.2.jar:5.3.2]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:572) ~[spring-context-5.3.2.jar:5.3.2]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1309) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1298) [spring-boot-2.4.1.jar:2.4.1]
	at com.atlgq.gulimall.order.GulimallOrderApplication.main(GulimallOrderApplication.java:20) [classes/:na]
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'seataFeignObjectWrapper' defined in class path resource [com/alibaba/cloud/seata/feign/SeataFeignClientAutoConfiguration$FeignBeanPostProcessorConfiguration.class]: Post-processing of merged bean definition failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [com.alibaba.cloud.seata.feign.SeataFeignObjectWrapper] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:586) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1367) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1287) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791) ~[spring-beans-5.3.2.jar:5.3.2]
	... 20 common frames omitted
Caused by: java.lang.IllegalStateException: Failed to introspect Class [com.alibaba.cloud.seata.feign.SeataFeignObjectWrapper] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2]
	at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:481) ~[spring-core-5.3.2.jar:5.3.2]
	at org.springframework.util.ReflectionUtils.doWithLocalMethods(ReflectionUtils.java:321) ~[spring-core-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.buildLifecycleMetadata(InitDestroyAnnotationBeanPostProcessor.java:232) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.findLifecycleMetadata(InitDestroyAnnotationBeanPostProcessor.java:210) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessMergedBeanDefinition(InitDestroyAnnotationBeanPostProcessor.java:149) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessMergedBeanDefinition(CommonAnnotationBeanPostProcessor.java:294) ~[spring-context-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyMergedBeanDefinitionPostProcessors(AbstractAutowireCapableBeanFactory.java:1100) ~[spring-beans-5.3.2.jar:5.3.2]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:583) ~[spring-beans-5.3.2.jar:5.3.2]
	... 30 common frames omitted
Caused by: java.lang.NoClassDefFoundError: org/springframework/cloud/openfeign/ribbon/CachingSpringLoadBalancerFactory
	at java.lang.Class.getDeclaredMethods0(Native Method) ~[na:1.8.0_271]
	at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) ~[na:1.8.0_271]
	at java.lang.Class.getDeclaredMethods(Class.java:1975) ~[na:1.8.0_271]
	at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:463) ~[spring-core-5.3.2.jar:5.3.2]
	... 37 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.springframework.cloud.openfeign.ribbon.CachingSpringLoadBalancerFactory
	at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[na:1.8.0_271]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[na:1.8.0_271]
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355) ~[na:1.8.0_271]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[na:1.8.0_271]
	... 41 common frames omitted

看控制台报错

Caused by: java.lang.NoClassDefFoundError: org/springframework/cloud/openfeign/ribbon/CachingSpringLoadBalancerFactory

缺少某个类
在查看引入的openfeign-core版本3.0.0的时候，发现这个版本的feign是没有那个类的。
在版本2.2.6的里面看到了这个类。

所以引入这个版本的openfeign-code

 
<dependency>
   <groupId>org.springframework.cloudgroupId>
   <artifactId>spring-cloud-starter-openfeignartifactId>
   <exclusions>
       <exclusion>
           <groupId>org.springframework.cloudgroupId>
           <artifactId>spring-cloud-openfeign-coreartifactId>
       exclusion>
   exclusions>
dependency>
<dependency>
   <groupId>org.springframework.cloudgroupId>
   <artifactId>spring-cloud-openfeign-coreartifactId>
   <version>2.2.6.RELEASEversion>
dependency>

但是又出现了新的问题

引入ribbon的包即可

<dependency>
       <groupId>org.springframework.cloudgroupId>
       <artifactId>spring-cloud-starter-netflix-ribbonartifactId>
       <version>2.2.6.RELEASEversion>
dependency>

重启服务，运行成功，但是仍然有一个报错

问题尚未解决。待续