Spring Cloud Alibaba 2021.1对OpenFeign整合Sentinel启动报错解决方案

Spring Cloud Alibaba 2021.1对OpenFeign整合Sentinel启动报错解决方案

feign.sentinel.enabled=true 开启就报错

2021-07-31 00:02:56.090  WARN 1352 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'orderSentinelController': Unsatisfied dependency expressed through field 'stockSentinelFeignService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.tumake.order.feign.StockSentinelFeignService': FactoryBean threw exception on object creation; nested exception is java.lang.NullPointerException: Cannot invoke "org.springframework.cloud.openfeign.FeignClientFactoryBean.getFallback()" because "feignClientFactoryBean" is null
2021-07-31 00:02:56.094  INFO 1352 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2021-07-31 00:02:56.114  INFO 1352 --- [           main] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2021-07-31 00:02:56.148 ERROR 1352 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'orderSentinelController': Unsatisfied dependency expressed through field 'stockSentinelFeignService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.tumake.order.feign.StockSentinelFeignService': FactoryBean threw exception on object creation; nested exception is java.lang.NullPointerException: Cannot invoke "org.springframework.cloud.openfeign.FeignClientFactoryBean.getFallback()" because "feignClientFactoryBean" is null
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1415) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:608) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:923) ~[spring-context-5.3.3.jar:5.3.3]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:588) ~[spring-context-5.3.3.jar:5.3.3]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1311) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1300) ~[spring-boot-2.4.2.jar:2.4.2]

　　

  网上很多朋友都是说Spring Cloud Alibaba2021.1不支持，让你降Spring could alibaba的版本，要么就是让你写代码的启动方式，虽然alibab推荐Spring Cloud Alibaba2021.1使用Spring Cloud 2020.0.0，搞了三个晚上试用了各种办法，最后我把Spring Cloud升级到2020.0.3终于成使生效。