问题

SpringBoot 整合 Dubbo 各种报错

java.lang.NoClassDefFoundError: org/apache/curator/framework/listen/StandardListenerManager
	at org.apache.curator.framework.recipes.cache.TreeCache.<init>(TreeCache.java:544) ~[curator-recipes-5.1.0.jar:5.1.0]
	at org.apache.curator.framework.recipes.cache.TreeCache$Builder.build(TreeCache.java:113) ~[curator-recipes-5.1.0.jar:5.1.0]
	at org.apache.dubbo.remoting.zookeeper.curator.CuratorZookeeperClient.addTargetDataListener(CuratorZookeeperClient.java:231) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.remoting.zookeeper.curator.CuratorZookeeperClient.addTargetDataListener(CuratorZookeeperClient.java:52) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.remoting.zookeeper.support.AbstractZookeeperClient.addDataListener(AbstractZookeeperClient.java:124) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.configcenter.support.zookeeper.ZookeeperDynamicConfiguration.<init>(ZookeeperDynamicConfiguration.java:57) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.configcenter.support.zookeeper.ZookeeperDynamicConfigurationFactory.createDynamicConfiguration(ZookeeperDynamicConfigurationFactory.java:37) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.common.config.configcenter.AbstractDynamicConfigurationFactory.lambda$getDynamicConfiguration$0(AbstractDynamicConfigurationFactory.java:39) ~[dubbo-2.7.8.jar:2.7.8]
	at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660) ~[na:1.8.0_271]
	at org.apache.dubbo.common.config.configcenter.AbstractDynamicConfigurationFactory.getDynamicConfiguration(AbstractDynamicConfigurationFactory.java:39) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.common.config.configcenter.DynamicConfiguration.getDynamicConfiguration(DynamicConfiguration.java:224) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.config.bootstrap.DubboBootstrap.prepareEnvironment(DubboBootstrap.java:1034) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.config.bootstrap.DubboBootstrap.startConfigCenter(DubboBootstrap.java:623) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.config.bootstrap.DubboBootstrap.initialize(DubboBootstrap.java:521) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.config.bootstrap.DubboBootstrap.start(DubboBootstrap.java:896) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.config.spring.context.DubboBootstrapApplicationListener.onContextRefreshedEvent(DubboBootstrapApplicationListener.java:59) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.config.spring.context.DubboBootstrapApplicationListener.onApplicationContextEvent(DubboBootstrapApplicationListener.java:52) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.config.spring.context.OneTimeExecutionApplicationContextEventListener.onApplicationEvent(OneTimeExecutionApplicationContextEventListener.java:40) ~[dubbo-2.7.8.jar:2.7.8]
	at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176) ~[spring-context-5.3.13.jar:5.3.13]
	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169) ~[spring-context-5.3.13.jar:5.3.13]
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143) ~[spring-context-5.3.13.jar:5.3.13]
	at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:421) ~[spring-context-5.3.13.jar:5.3.13]
	at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:378) ~[spring-context-5.3.13.jar:5.3.13]
	at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:938) ~[spring-context-5.3.13.jar:5.3.13]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:586) ~[spring-context-5.3.13.jar:5.3.13]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:730) [spring-boot-2.6.1.jar:2.6.1]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:412) [spring-boot-2.6.1.jar:2.6.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:302) [spring-boot-2.6.1.jar:2.6.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) [spring-boot-2.6.1.jar:2.6.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1290) [spring-boot-2.6.1.jar:2.6.1]
	at com.zxb.dubbobootprovider.DubboBootProviderApplication.main(DubboBootProviderApplication.java:12) [classes/:na]
Caused by: java.lang.ClassNotFoundException: org.apache.curator.framework.listen.StandardListenerManager
	at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[na:1.8.0_271]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[na:1.8.0_271]
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355) ~[na:1.8.0_271]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[na:1.8.0_271]
	... 31 common frames omitted

java.lang.NoClassDefFoundError: org/apache/curator/framework/recipes/cache/TreeCacheListener
	at java.lang.ClassLoader.defineClass1(Native Method) ~[na:1.8.0_271]
	at java.lang.ClassLoader.defineClass(ClassLoader.java:756) ~[na:1.8.0_271]
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[na:1.8.0_271]
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:468) ~[na:1.8.0_271]
	at java.net.URLClassLoader.access$100(URLClassLoader.java:74) ~[na:1.8.0_271]
	at java.net.URLClassLoader$1.run(URLClassLoader.java:369) ~[na:1.8.0_271]
	at java.net.URLClassLoader$1.run(URLClassLoader.java:363) ~[na:1.8.0_271]
	at java.security.AccessController.doPrivileged(Native Method) ~[na:1.8.0_271]
	at java.net.URLClassLoader.findClass(URLClassLoader.java:362) ~[na:1.8.0_271]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[na:1.8.0_271]
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355) ~[na:1.8.0_271]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[na:1.8.0_271]
	at org.apache.dubbo.remoting.zookeeper.curator.CuratorZookeeperClient.createTargetDataListener(CuratorZookeeperClient.java:220) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.remoting.zookeeper.curator.CuratorZookeeperClient.createTargetDataListener(CuratorZookeeperClient.java:52) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.remoting.zookeeper.support.AbstractZookeeperClient.lambda$addDataListener$3(AbstractZookeeperClient.java:123) ~[dubbo-2.7.8.jar:2.7.8]
	at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660) ~[na:1.8.0_271]
	at org.apache.dubbo.remoting.zookeeper.support.AbstractZookeeperClient.addDataListener(AbstractZookeeperClient.java:123) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.configcenter.support.zookeeper.ZookeeperDynamicConfiguration.<init>(ZookeeperDynamicConfiguration.java:57) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.configcenter.support.zookeeper.ZookeeperDynamicConfigurationFactory.createDynamicConfiguration(ZookeeperDynamicConfigurationFactory.java:37) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.common.config.configcenter.AbstractDynamicConfigurationFactory.lambda$getDynamicConfiguration$0(AbstractDynamicConfigurationFactory.java:39) ~[dubbo-2.7.8.jar:2.7.8]
	at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660) ~[na:1.8.0_271]
	at org.apache.dubbo.common.config.configcenter.AbstractDynamicConfigurationFactory.getDynamicConfiguration(AbstractDynamicConfigurationFactory.java:39) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.common.config.configcenter.DynamicConfiguration.getDynamicConfiguration(DynamicConfiguration.java:224) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.config.bootstrap.DubboBootstrap.prepareEnvironment(DubboBootstrap.java:1034) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.config.bootstrap.DubboBootstrap.startConfigCenter(DubboBootstrap.java:623) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.config.bootstrap.DubboBootstrap.initialize(DubboBootstrap.java:521) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.config.bootstrap.DubboBootstrap.start(DubboBootstrap.java:896) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.config.spring.context.DubboBootstrapApplicationListener.onContextRefreshedEvent(DubboBootstrapApplicationListener.java:59) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.config.spring.context.DubboBootstrapApplicationListener.onApplicationContextEvent(DubboBootstrapApplicationListener.java:52) ~[dubbo-2.7.8.jar:2.7.8]
	at org.apache.dubbo.config.spring.context.OneTimeExecutionApplicationContextEventListener.onApplicationEvent(OneTimeExecutionApplicationContextEventListener.java:40) ~[dubbo-2.7.8.jar:2.7.8]
	at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176) ~[spring-context-5.3.13.jar:5.3.13]
	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169) ~[spring-context-5.3.13.jar:5.3.13]
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143) ~[spring-context-5.3.13.jar:5.3.13]
	at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:421) ~[spring-context-5.3.13.jar:5.3.13]
	at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:378) ~[spring-context-5.3.13.jar:5.3.13]
	at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:938) ~[spring-context-5.3.13.jar:5.3.13]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:586) ~[spring-context-5.3.13.jar:5.3.13]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:730) [spring-boot-2.6.1.jar:2.6.1]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:412) [spring-boot-2.6.1.jar:2.6.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:302) [spring-boot-2.6.1.jar:2.6.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) [spring-boot-2.6.1.jar:2.6.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1290) [spring-boot-2.6.1.jar:2.6.1]
	at com.zxb.dubbobootprovider.DubboBootProviderApplication.main(DubboBootProviderApplication.java:12) [classes/:na]
Caused by: java.lang.ClassNotFoundException: org.apache.curator.framework.recipes.cache.TreeCacheListener
	at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[na:1.8.0_271]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[na:1.8.0_271]
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355) ~[na:1.8.0_271]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[na:1.8.0_271]
	... 43 common frames omitted

搞来搞去，应该是版本问题。

解决

最终，我解决问题的依赖如下：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.6.1</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.example</groupId>
	<artifactId>dubbo-boot-provider</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>dubbo-boot-provider</name>
	<description>Demo project for Spring Boot</description>
	<properties>
		<java.version>1.8</java.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter</artifactId>
		</dependency>

		<dependency>
			<groupId>org.example</groupId>
			<artifactId>dubbo-interface</artifactId>
			<version>1.0-SNAPSHOT</version>
		</dependency>
		<!-- Dubbo Spring Boot Starter -->
		<dependency>
			<groupId>org.apache.dubbo</groupId>
			<artifactId>dubbo-spring-boot-starter</artifactId>
			<version>2.7.8</version>
		</dependency>
		<!-- 引入 zookeeper -->
		<dependency>
			<groupId>org.apache.curator</groupId>
			<artifactId>curator-framework</artifactId>
			<version>2.12.0</version>
		</dependency>
		<dependency>
			<groupId>org.apache.curator</groupId>
			<artifactId>curator-recipes</artifactId>
			<version>2.12.0</version>
		</dependency>


		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

</project>

如果依赖解析不了，试试如下配置：

<repositories>
    <repository>
        <id>apache.snapshots.https</id>
        <name>Apache Development Snapshot Repository</name>
        <url>https://repository.apache.org/content/repositories/snapshots</url>
        <releases>
            <enabled>false</enabled>
        </releases>
        <snapshots>
            <enabled>true</enabled>
        </snapshots>
    </repository>
</repositories>

并且 Dubbo 的 @Service 注解已经废弃，现在推荐使用 @DubboService 来暴露服务。

# java # apache # zookeeper
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