Nacos: Dubbo 2.7.0 problems with dubbo-registry-nacos

[xiaostart977]

maven dependece

<dependency>
    <groupId>org.apache.dubbo</groupId>
    <artifactId>dubbo</artifactId>
    <version>2.7.0</version>
</dependency>
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>dubbo-registry-nacos</artifactId>
    <version>0.0.2</version>
</dependency>

When launching the app, the following error occurs

java.lang.IllegalStateException: Failed to load extension class(interface: interface org.apache.dubbo.registry.RegistryFactory, class line: com.alibaba.dubbo.registry.nacos.NacosRegistryFactory) in jar:file:/D:/developer-tool/apache-maven-3.5.3/repository/com/alibaba/dubbo-registry-nacos/0.0.2/dubbo-registry-nacos-0.0.2.jar!/META-INF/dubbo/com.alibaba.dubbo.registry.RegistryFactory, cause: com/alibaba/dubbo/registry/support/AbstractRegistryFactory
at org.apache.dubbo.common.extension.ExtensionLoader.loadResource(ExtensionLoader.java:675) ~[dubbo-2.7.0.jar:2.7.0]
at org.apache.dubbo.common.extension.ExtensionLoader.loadDirectory(ExtensionLoader.java:643) ~[dubbo-2.7.0.jar:2.7.0]
at org.apache.dubbo.common.extension.ExtensionLoader.loadExtensionClasses(ExtensionLoader.java:624) ~[dubbo-2.7.0.jar:2.7.0]
at org.apache.dubbo.common.extension.ExtensionLoader.getExtensionClasses(ExtensionLoader.java:595) ~[dubbo-2.7.0.jar:2.7.0]
at org.apache.dubbo.common.extension.ExtensionLoader.getSupportedExtensions(ExtensionLoader.java:373) ~[dubbo-2.7.0.jar:2.7.0]
at org.apache.dubbo.common.extension.factory.SpiExtensionFactory.getExtension(SpiExtensionFactory.java:32) ~[dubbo-2.7.0.jar:2.7.0]
at org.apache.dubbo.common.extension.factory.AdaptiveExtensionFactory.getExtension(AdaptiveExtensionFactory.java:47) ~[dubbo-2.7.0.jar:2.7.0]
at org.apache.dubbo.common.extension.ExtensionLoader.injectExtension(ExtensionLoader.java:562) ~[dubbo-2.7.0.jar:2.7.0]
at org.apache.dubbo.common.extension.ExtensionLoader.createExtension(ExtensionLoader.java:529) ~[dubbo-2.7.0.jar:2.7.0]
at org.apache.dubbo.common.extension.ExtensionLoader.getExtension(ExtensionLoader.java:344) ~[dubbo-2.7.0.jar:2.7.0]
at org.apache.dubbo.rpc.Protocol$Adaptive.export(Protocol$Adaptive.java) ~[dubbo-2.7.0.jar:2.7.0]
at org.apache.dubbo.config.ServiceConfig.doExportUrlsFor1Protocol(ServiceConfig.java:553) ~[dubbo-2.7.0.jar:2.7.0]
at org.apache.dubbo.config.ServiceConfig.doExportUrls(ServiceConfig.java:402) ~[dubbo-2.7.0.jar:2.7.0]
at org.apache.dubbo.config.ServiceConfig.doExport(ServiceConfig.java:363) ~[dubbo-2.7.0.jar:2.7.0]
at org.apache.dubbo.config.ServiceConfig.export(ServiceConfig.java:345) ~[dubbo-2.7.0.jar:2.7.0]
at org.apache.dubbo.config.spring.ServiceBean.export(ServiceBean.java:318) ~[dubbo-2.7.0.jar:2.7.0]
at org.apache.dubbo.config.spring.ServiceBean.onApplicationEvent(ServiceBean.java:112) ~[dubbo-2.7.0.jar:2.7.0]
at org.apache.dubbo.config.spring.ServiceBean.onApplicationEvent(ServiceBean.java:58) ~[dubbo-2.7.0.jar:2.7.0]
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:398) ~[spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:355) ~[spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:882) ~[spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:163) ~[spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) ~[spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]
at com.xxx.Application.main(Application.java:20) [classes/:na]
Caused by: java.lang.NoClassDefFoundError: com/alibaba/dubbo/registry/support/AbstractRegistryFactory
at java.lang.ClassLoader.defineClass1(Native Method) ~[na:1.8.0_161]
at java.lang.ClassLoader.defineClass(ClassLoader.java:763) ~[na:1.8.0_161]
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[na:1.8.0_161]
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) ~[na:1.8.0_161]
at java.net.URLClassLoader.access$100(URLClassLoader.java:73) ~[na:1.8.0_161]
at java.net.URLClassLoader$1.run(URLClassLoader.java:368) ~[na:1.8.0_161]
at java.net.URLClassLoader$1.run(URLClassLoader.java:362) ~[na:1.8.0_161]
at java.security.AccessController.doPrivileged(Native Method) ~[na:1.8.0_161]
at java.net.URLClassLoader.findClass(URLClassLoader.java:361) ~[na:1.8.0_161]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_161]
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338) ~[na:1.8.0_161]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_161]
at java.lang.Class.forName0(Native Method) ~[na:1.8.0_161]
at java.lang.Class.forName(Class.java:348) ~[na:1.8.0_161]
at org.apache.dubbo.common.extension.ExtensionLoader.loadResource(ExtensionLoader.java:672) ~[dubbo-2.7.0.jar:2.7.0]
... 32 common frames omitted
Caused by: java.lang.ClassNotFoundException: com.alibaba.dubbo.registry.support.AbstractRegistryFactory
at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_161]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_161]
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338) ~[na:1.8.0_161]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_161]
... 47 common frames omitted

[dengbin19910916]

https://github.com/dengbin19910916/dubbo-registry-nacos.git 升级了下Dubbo的版本，是可以用的

[dslchd]

This problem is almost a month away, but there is no official person to solve it, a little disappointed. Do you have to manually upgrade the version number yourself?

[kathetina]

This problem had resolved in Dubbo 2.7.1!

[leapcat]

This problem had resolved in Dubbo 2.7.1!

when Apache Dubbo 2.7.1 will be general released, I can't find it in mvn repository now

[icc99]

@kathetina There is no class called "com/alibaba/dubbo/registry/support/AbstractRegistryFactory" in Apache Dubbo 2.7.1

[pengcgithub]

this problem can be find in dubbo issues. Introduce the following jar to solve.

<dependency>
    <groupId>org.apache.dubbo</groupId>
    <artifactId>dubbo-registry-nacos</artifactId>
    <version>2.7.1</version>
</dependency>

[nkorange]

This issue is to be closed, please report Dubbo-Nacos registry problem to Dubbo repository.