feign.codec.DecodeException异常解决方案

使用feign两个服务之间调用，遇到下面的错误

14:49:18.197 logback [ForkJoinPool.commonPool-worker-2] WARN  o.s.h.c.j.MappingJackson2HttpMessageConverter 127 - Failed to evaluate Jackson deserialization for type [[simple type, class com.xxxx.common.ServiceResult<java.util.List<com.xxxx.base.entity.meta.MetaFieldEntity>>]]: java.lang.ArrayStoreException: sun.reflect.annotation.TypeNotPresentExceptionProxy
14:49:18.199 logback [http-nio-9102-exec-1] WARN  o.s.h.c.j.MappingJackson2HttpMessageConverter 127 - Failed to evaluate Jackson deserialization for type [[simple type, class com.xxxx.common.ServiceResult<java.util.List<com.xxxx.base.entity.meta.MetaFieldEntity>>]]: java.lang.ArrayStoreException: sun.reflect.annotation.TypeNotPresentExceptionProxy
14:49:18.200 logback [ForkJoinPool.commonPool-worker-2] WARN  o.s.h.c.j.MappingJackson2HttpMessageConverter 127 - Failed to evaluate Jackson deserialization for type [[simple type, class com.xxxx.common.ServiceResult<java.util.List<com.xxxx.base.entity.meta.MetaFieldEntity>>]]: java.lang.ArrayStoreException: sun.reflect.annotation.TypeNotPresentExceptionProxy
14:49:18.202 logback [http-nio-9102-exec-1] WARN  o.s.h.c.j.MappingJackson2HttpMessageConverter 127 - Failed to evaluate Jackson deserialization for type [[simple type, class com.xxxx.common.ServiceResult<java.util.List<com.xxxx.base.entity.meta.MetaFieldEntity>>]]: java.lang.ArrayStoreException: sun.reflect.annotation.TypeNotPresentExceptionProxy
14:49:18.208 logback [http-nio-9102-exec-1] ERROR c.xxxx.ice.util.ExceptionAdvice 45 - Could not extract response: no suitable HttpMessageConverter found for response type [com.xxxx.common.ServiceResult<java.util.List<com.xxxx.base.entity.meta.MetaFieldEntity>>] and content type [application/json]
feign.codec.DecodeException: Could not extract response: no suitable HttpMessageConverter found for response type [com.xxxx.common.ServiceResult<java.util.List<com.xxxx.base.entity.meta.MetaFieldEntity>>] and content type [application/json]at feign.AsyncResponseHandler.decode(AsyncResponseHandler.java:119)at feign.AsyncResponseHandler.handleResponse(AsyncResponseHandler.java:87)at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:138)at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:89)at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:100)at com.sun.proxy.$Proxy216.findColumnsByTableCode(Unknown Source)at com.xxxx.ice.service.impl.IndicatorServiceImpl.lambda$findTableColumns$57(IndicatorServiceImpl.java:1465)at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)at java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1556)at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)at java.util.stream.ForEachOps$ForEachTask.compute(ForEachOps.java:291)at java.util.concurrent.CountedCompleter.exec(CountedCompleter.java:731)at java.util.concurrent.ForkJoinTask.doExec$$$capture(ForkJoinTask.java:289)at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java)at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1067)at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1703)at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:172)
Caused by: org.springframework.web.client.UnknownContentTypeException: Could not extract response: no suitable HttpMessageConverter found for response type [com.xxxx.common.ServiceResult<java.util.List<com.xxxx.base.entity.meta.MetaFieldEntity>>] and content type [application/json]at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:126)at org.springframework.cloud.openfeign.support.SpringDecoder.decode(SpringDecoder.java:75)at org.springframework.cloud.openfeign.support.ResponseEntityDecoder.decode(ResponseEntityDecoder.java:61)at feign.optionals.OptionalDecoder.decode(OptionalDecoder.java:36)at feign.AsyncResponseHandler.decode(AsyncResponseHandler.java:115)... 16 common frames omitted

分析：

服务提供方应该是没有问题，从错误提示看接口是联通的数据正常返回应该是在解析返回数据时出现解码异常

但具体原因未从错误信息看出，在网上也未查询到相关解决方法，无赖只能跟踪源码分析。

跟踪源码发现是缺少 java.lang.NoClassDefFoundError: org/springframework/beans/factory/aspectj/ConfigurableObject 类

进一步跟踪发现引入的服务提供方的实体类的父类引入

org.springframework.data.jpa.domain.support.AuditingEntityListener.class自动维护创建时间、更新时间、版本号等信息而该类需要依赖上面提到的 java.lang.NoClassDefFoundError: org/springframework/beans/factory/aspectj/ConfigurableObject 类

故引入maven依赖

<groupId>org.springframework</groupId>

<artifactId>spring-aspects</artifactId>

</dependency>

问题解决。

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