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alibaba / spring-context-support

An internal support project for spring-context in Alibaba
Apache License 2.0
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About "classValuesAsString" in "AbstractAnnotationBeanPostProcessor" #45

Open WoodZzzzz opened 3 years ago

WoodZzzzz commented 3 years ago

I was integrating dubbo-2.7.8 and nacos-client-2.0.2 ， I found a problem in "spring-context-support-1.0.11.jar". 

Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Class
    at org.apache.dubbo.config.spring.util.DubboAnnotationUtils.resolveServiceInterfaceClass(DubboAnnotationUtils.java:95) ~[dubbo-2.7.8.jar:2.7.8]
    at org.apache.dubbo.config.spring.util.DubboAnnotationUtils.resolveInterfaceName(DubboAnnotationUtils.java:78) ~[dubbo-2.7.8.jar:2.7.8]
    at org.apache.dubbo.config.spring.beans.factory.annotation.ServiceBeanNameBuilder.<init>(ServiceBeanNameBuilder.java:65) ~[dubbo-2.7.8.jar:2.7.8]
    at org.apache.dubbo.config.spring.beans.factory.annotation.ServiceBeanNameBuilder.create(ServiceBeanNameBuilder.java:78) ~[dubbo-2.7.8.jar:2.7.8]
    at org.apache.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor.buildReferencedBeanName(ReferenceAnnotationBeanPostProcessor.java:303) ~[dubbo-2.7.8.jar:2.7.8]
    at org.apache.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor.buildInjectedObjectCacheKey(ReferenceAnnotationBeanPostProcessor.java:292) ~[dubbo-2.7.8.jar:2.7.8]
    at com.alibaba.spring.beans.factory.annotation.AbstractAnnotationBeanPostProcessor.getInjectedObject(AbstractAnnotationBeanPostProcessor.java:404) ~[spring-context-support-1.0.11.jar:na]
    at com.alibaba.spring.beans.factory.annotation.AbstractAnnotationBeanPostProcessor$AnnotatedFieldElement.inject(AbstractAnnotationBeanPostProcessor.java:626) ~[spring-context-support-1.0.11.jar:na]
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at com.alibaba.spring.beans.factory.annotation.AbstractAnnotationBeanPostProcessor.postProcessPropertyValues(AbstractAnnotationBeanPostProcessor.java:179) ~[spring-context-support-1.0.11.jar:na]
    ... 30 common frames omitted

I added dubbo-2.7.8 firstly, It implicitly dependent on spring-context-1.0.8 but when I added nacos-2.0.2. It needs spring-context-1.0.11, otherwise it will throw

Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Class
    at org.apache.dubbo.config.spring.util.DubboAnnotationUtils.resolveServiceInterfaceClass(DubboAnnotationUtils.java:95) ~[dubbo-2.7.8.jar:2.7.8]
    at org.apache.dubbo.config.spring.util.DubboAnnotationUtils.resolveInterfaceName(DubboAnnotationUtils.java:78) ~[dubbo-2.7.8.jar:2.7.8]
    at org.apache.dubbo.config.spring.beans.factory.annotation.ServiceBeanNameBuilder.<init>(ServiceBeanNameBuilder.java:65) ~[dubbo-2.7.8.jar:2.7.8]
    at org.apache.dubbo.config.spring.beans.factory.annotation.ServiceBeanNameBuilder.create(ServiceBeanNameBuilder.java:78) ~[dubbo-2.7.8.jar:2.7.8]
    at org.apache.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor.buildReferencedBeanName(ReferenceAnnotationBeanPostProcessor.java:303) ~[dubbo-2.7.8.jar:2.7.8]
    at org.apache.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor.buildInjectedObjectCacheKey(ReferenceAnnotationBeanPostProcessor.java:292) ~[dubbo-2.7.8.jar:2.7.8]
    at com.alibaba.spring.beans.factory.annotation.AbstractAnnotationBeanPostProcessor.getInjectedObject(AbstractAnnotationBeanPostProcessor.java:404) ~[spring-context-support-1.0.11.jar:na]
    at com.alibaba.spring.beans.factory.annotation.AbstractAnnotationBeanPostProcessor$AnnotatedFieldElement.inject(AbstractAnnotationBeanPostProcessor.java:626) ~[spring-context-support-1.0.11.jar:na]
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at com.alibaba.spring.beans.factory.annotation.AbstractAnnotationBeanPostProcessor.postProcessPropertyValues(AbstractAnnotationBeanPostProcessor.java:179) ~[spring-context-support-1.0.11.jar:na]
    ... 30 common frames omitted

Finally, I found the difference between 1.0.11 and 1.0.8 is about com.alibaba.spring.beans.factory.annotation.AbstractAnnotationBeanPostProcessor#classValuesAsString Maybe that is where the problem

WoodZzzzz commented 3 years ago

这个方法 ”com.alibaba.spring.beans.factory.annotation.AbstractAnnotationBeanPostProcessor#setClassValuesAsString" 如何使用，如果set false，应该可以解决问题

wuwen5 commented 3 years ago

44

wuwen5 commented 3 years ago

这个方法 ”com.alibaba.spring.beans.factory.annotation.AbstractAnnotationBeanPostProcessor#setClassValuesAsString" 如何使用，如果set false，应该可以解决问题

是的，上个版本是false，这是个典型的版本兼容性问题，新加的特性打破了之前的默认值，导致外部依赖项目（dubbo）直接出错☹️