记SpringBoot项目导入spring-cloud-starter-openfeign依赖版本问题

 org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'bootstrapImportSelectorConfiguration': Initialization of bean failed; nested exception is java.lang.NoClassDefFoundError: org/springframework/boot/context/properties/ConfigurationPropertiesBean
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:601) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
 at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
 at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
 at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
 at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
 at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:845) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
 at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877) ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
 at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
 at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:742) [spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
 at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:389) [spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
 at org.springframework.boot.SpringApplication.run(SpringApplication.java:311) [spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
 at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:139) ~[spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
 at org.springframework.cloud.bootstrap.BootstrapApplicationListener.bootstrapServiceContext(BootstrapApplicationListener.java:212) ~[spring-cloud-context-2.2.2.RELEASE.jar:2.2.2.RELEASE]
 at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:117) ~[spring-cloud-context-2.2.2.RELEASE.jar:2.2.2.RELEASE]
 at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:74) ~[spring-cloud-context-2.2.2.RELEASE.jar:2.2.2.RELEASE]
 at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
 at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
 at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
 at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127) ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
 at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:75) ~[spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
 at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:53) ~[spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
 at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:340) [spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
 at org.springframework.boot.SpringApplication.run(SpringApplication.java:304) [spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
 at org.springframework.boot.SpringApplication.run(SpringApplication.java:1213) [spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
 at org.springframework.boot.SpringApplication.run(SpringApplication.java:1202) [spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
 at com.wjs.plan.PlanApplication.main(PlanApplication.java:16) [classes/:na]
Caused by: java.lang.NoClassDefFoundError: org/springframework/boot/context/properties/ConfigurationPropertiesBean
 at org.springframework.cloud.context.properties.ConfigurationPropertiesBeans.postProcessBeforeInitialization(ConfigurationPropertiesBeans.java:94) ~[spring-cloud-context-2.2.2.RELEASE.jar:2.2.2.RELEASE]
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:414) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1770) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
 ... 26 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.springframework.boot.context.properties.ConfigurationPropertiesBean
 at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[na:1.8.0_201]
 at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_201]
 at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) ~[na:1.8.0_201]
 at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_201]
 ... 30 common frames omitted

找了一大推资料最后将openfeign版本改成2.1.1发现项目可以正常启动了。

最后查看了openfengn两个版本的不同，再次贴出来。

1. 版本2.1.1

   

2. 版本2.2.2
   
   相信在这里大佬已经看出来了，openfeign2.2.2版本中指定了每个jar包的版本，2.1.1版本则是引入了父工程的版本号。在引入openfeign2.2.2后可以看到spring-cloud-context有2个，这就导致jar包冲突从而项目启动失败。在此特别记下，方便以后查找。