加入nacos模块的源码运行时,报错:
No enum constant com.fasterxml.jackson.annotation.JsonTypeInfo.Id.DEDUCTION;
nacos版本2.0.3;解决方案直接看最后。
org.springframework.beans.factory.BeanDefinitionStoreException: Failed to read candidate component class: URL [jar:file:/E:/maven-respository/com/pig4cloud/nacos/nacos-api/2.0.3/nacos-api-2.0.3.jar!/com/alibaba/nacos/api/naming/selector/Selector.class]; nested exception is java.lang.IllegalArgumentException: No enum constant com.fasterxml.jackson.annotation.JsonTypeInfo.Id.DEDUCTION
at org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider.scanCandidateComponents(ClassPathScanningCandidateComponentProvider.java:452)
at org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider.findCandidateComponents(ClassPathScanningCandidateComponentProvider.java:315)
at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.doScan(ClassPathBeanDefinitionScanner.java:276)
at org.springframework.context.annotation.ComponentScanAnnotationParser.parse(ComponentScanAnnotationParser.java:132)
at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:296)
at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:250)
at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:207)
at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:175)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:320)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:237)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:280)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:96)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:707)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:533)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:755)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:402)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:312)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1247)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1236)
at com.alibaba.nacos.GblogNacosApplication.main(GblogNacosApplication.java:39)
Caused by: java.lang.IllegalArgumentException: No enum constant com.fasterxml.jackson.annotation.JsonTypeInfo.Id.DEDUCTION
at java.base/java.lang.Enum.valueOf(Enum.java:240)
at org.springframework.core.type.classreading.MergedAnnotationReadingVisitor.visitEnum(MergedAnnotationReadingVisitor.java:105)
at org.springframework.core.type.classreading.MergedAnnotationReadingVisitor.visitEnum(MergedAnnotationReadingVisitor.java:80)
at org.springframework.asm.ClassReader.readElementValue(ClassReader.java:3056)
at org.springframework.asm.ClassReader.readElementValues(ClassReader.java:2975)
at org.springframework.asm.ClassReader.accept(ClassReader.java:582)
at org.springframework.asm.ClassReader.accept(ClassReader.java:401)
at org.springframework.core.type.classreading.SimpleMetadataReader.<init>(SimpleMetadataReader.java:49)
at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:103)
at org.springframework.core.type.classreading.CachingMetadataReaderFactory.getMetadataReader(CachingMetadataReaderFactory.java:123)
at org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider.scanCandidateComponents(ClassPathScanningCandidateComponentProvider.java:429)
... 21 common frames omitted
经过查找发现是版本问题:
原本用的版本:
这里的版本是根据官网推荐用的,首先nacos选用的2.0.3版本,所以spring-cloud-alibaba就是2.2.7版本的。
再根据cloud-alibaba选择对应的版本:
但是这个版本运行报错;所以换成如下版本:
再次运行:

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