订单模块使用FeignClient项目不能正常启动

Question

项目版本：

订单模块依赖：

FeignClient代码：

订单模块启动函数：

启动失败，找不到LoadBalancedRetryFactory类

是还有什么依赖没有引用？

期望结果：能够正常启动，调用商品服务。

Answer 1

w84422 2018-03-28 21:19:47

找到原因了，报Caused by: java.lang.ClassNotFoundException: org.springframework.cloud.client.loadbalancer.LoadBalancedRetryFactory，是依赖的版本不对，改成

<dependency>
  <groupId>org.springframework.cloud</groupId>
  <artifactId>spring-cloud-starter-feign</artifactId>
  <version>2.0.0.M1</version>
</dependency>

就OK了

• 提问者 左佐696 #1

  非常感谢！

Answer 2

kilde 2018-03-29 13:38:41

用此版本依赖是可以的

<dependency>
  <groupId>org.springframework.cloud</groupId>
  <artifactId>spring-cloud-starter-feign</artifactId>
  <version>1.3.2.RELEASE</version>
</dependency>

Answer 3

慕勒6682347 2018-03-29 09:12:28

确实改成M1  就可以了 ,还是很好奇师兄的依赖为什么录视频的时候就能启动

Answer 4

w84422 2018-03-27 22:01:37

我的也报这个错，引入spring-cloud-starter-feign后启动，会报以下错误，没有查到解决办法，feign这块没法用，类确实有，就是说找不到

java.lang.IllegalStateException: Failed to introspect Class [org.springframework.cloud.netflix.ribbon.RibbonAutoConfiguration] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2]

at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:659) ~[spring-core-5.0.0.RC3.jar:5.0.0.RC3]

at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:556) ~[spring-core-5.0.0.RC3.jar:5.0.0.RC3]

at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:541) ~[spring-core-5.0.0.RC3.jar:5.0.0.RC3]

at org.springframework.util.ReflectionUtils.getUniqueDeclaredMethods(ReflectionUtils.java:599) ~[spring-core-5.0.0.RC3.jar:5.0.0.RC3]

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryMethod(AbstractAutowireCapableBeanFactory.java:728) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:670) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:638) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]

at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1507) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]

at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:421) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]

at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:391) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]

at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:511) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]

at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:504) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]

at org.springframework.context.support.AbstractApplicationContext.getBeansOfType(AbstractApplicationContext.java:1191) ~[spring-context-5.0.0.RC3.jar:5.0.0.RC3]

at org.springframework.boot.SpringApplication.getExitCodeFromMappedException(SpringApplication.java:879) [spring-boot-2.0.0.M3.jar:2.0.0.M3]

at org.springframework.boot.SpringApplication.getExitCodeFromException(SpringApplication.java:865) [spring-boot-2.0.0.M3.jar:2.0.0.M3]

at org.springframework.boot.SpringApplication.handleExitCode(SpringApplication.java:851) [spring-boot-2.0.0.M3.jar:2.0.0.M3]

at org.springframework.boot.SpringApplication.handleRunFailure(SpringApplication.java:802) [spring-boot-2.0.0.M3.jar:2.0.0.M3]

at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) [spring-boot-2.0.0.M3.jar:2.0.0.M3]

at org.springframework.boot.SpringApplication.run(SpringApplication.java:1245) [spring-boot-2.0.0.M3.jar:2.0.0.M3]

at org.springframework.boot.SpringApplication.run(SpringApplication.java:1233) [spring-boot-2.0.0.M3.jar:2.0.0.M3]

at com.hongyu.product.ProductApplication.main(ProductApplication.java:15) [classes/:na]

Caused by: java.lang.NoClassDefFoundError: org/springframework/cloud/client/loadbalancer/LoadBalancedRetryFactory

at java.lang.Class.getDeclaredMethods0(Native Method) ~[na:1.8.0_162]

at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) ~[na:1.8.0_162]

at java.lang.Class.getDeclaredMethods(Class.java:1975) ~[na:1.8.0_162]

at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:641) ~[spring-core-5.0.0.RC3.jar:5.0.0.RC3]

... 20 common frames omitted

Caused by: java.lang.ClassNotFoundException: org.springframework.cloud.client.loadbalancer.LoadBalancedRetryFactory

at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_162]

at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_162]

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338) ~[na:1.8.0_162]

at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_162]

... 24 common frames omitted

Answer 5

殇腥黯皓 2018-03-27 10:17:44

请对照师兄的源码进行操作，而且你的错误看不清