[Java知识库] Error creating bean with name ‘com.alibaba.dubbo.spring.boot.DubboProviderAutoConfiguration‘

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[Java知识库]Error creating bean with name ‘com.alibaba.dubbo.spring.boot.DubboProviderAutoConfiguration‘

dubbo+zookeeper注册中心启动失败Error creating bean with name 'com.alibaba.dubbo.spring.boot.DubboProviderAutoConfiguration'

- 报错
- 原因推测

初学dubbo各大视频都是dubbo+zookeeper的组合，但是我一直启动报错，以下都是我的血泪心酸史

报错

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.alibaba.dubbo.spring.boot.DubboProviderAutoConfiguration': Invocation of init method failed; nested exception is java.lang.ExceptionInInitializerError
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) ~[spring-beans-5.3.21.jar:5.3.21]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:440) ~[spring-beans-5.3.21.jar:5.3.21]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1796) ~[spring-beans-5.3.21.jar:5.3.21]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620) ~[spring-beans-5.3.21.jar:5.3.21]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.21.jar:5.3.21]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.21.jar:5.3.21]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.21.jar:5.3.21]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.21.jar:5.3.21]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.21.jar:5.3.21]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:955) ~[spring-beans-5.3.21.jar:5.3.21]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) ~[spring-context-5.3.21.jar:5.3.21]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.21.jar:5.3.21]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) ~[spring-boot-2.7.1.jar:2.7.1]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) ~[spring-boot-2.7.1.jar:2.7.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-2.7.1.jar:2.7.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306) ~[spring-boot-2.7.1.jar:2.7.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295) ~[spring-boot-2.7.1.jar:2.7.1]
	at com.example.provider.DubboProviderApplication.main(DubboProviderApplication.java:15) ~[classes/:na]
Caused by: java.lang.ExceptionInInitializerError: null
	at com.alibaba.dubbo.spring.boot.DubboProviderAutoConfiguration.initProviderBean(DubboProviderAutoConfiguration.java:52) ~[dubbo-spring-boot-starter-2.0.0.jar:na]
	at com.alibaba.dubbo.spring.boot.DubboProviderAutoConfiguration.init(DubboProviderAutoConfiguration.java:45) ~[dubbo-spring-boot-starter-2.0.0.jar:na]
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[na:na]
	at java.base/java.lang.reflect.Method.invoke(Method.java:577) ~[na:na]
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) ~[spring-beans-5.3.21.jar:5.3.21]
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) ~[spring-beans-5.3.21.jar:5.3.21]
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) ~[spring-beans-5.3.21.jar:5.3.21]
	... 17 common frames omitted
Caused by: java.lang.IllegalStateException: fail to create adaptive instance: java.lang.IllegalStateException: Can not create adaptive extension interface com.alibaba.dubbo.rpc.Protocol, cause: Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @6f96c77
	at com.alibaba.dubbo.common.extension.ExtensionLoader.getAdaptiveExtension(ExtensionLoader.java:447) ~[dubbo-2.6.0.jar:2.6.0]
	at com.alibaba.dubbo.config.ServiceConfig.<clinit>(ServiceConfig.java:74) ~[dubbo-2.6.0.jar:2.6.0]
	... 24 common frames omitted
Caused by: java.lang.IllegalStateException: Can not create adaptive extension interface com.alibaba.dubbo.rpc.Protocol, cause: Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @6f96c77
	at com.alibaba.dubbo.common.extension.ExtensionLoader.createAdaptiveExtension(ExtensionLoader.java:710) ~[dubbo-2.6.0.jar:2.6.0]
	at com.alibaba.dubbo.common.extension.ExtensionLoader.getAdaptiveExtension(ExtensionLoader.java:443) ~[dubbo-2.6.0.jar:2.6.0]
	... 25 common frames omitted
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @6f96c77
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354) ~[na:na]
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297) ~[na:na]
	at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:200) ~[na:na]
	at java.base/java.lang.reflect.Method.setAccessible(Method.java:194) ~[na:na]
	at javassist.ClassPool.toClass2(ClassPool.java:1181) ~[javassist-3.20.0-GA.jar:na]
	at javassist.ClassPool.toClass(ClassPool.java:1164) ~[javassist-3.20.0-GA.jar:na]
	at javassist.CtClass.toClass(CtClass.java:1305) ~[javassist-3.20.0-GA.jar:na]
	at com.alibaba.dubbo.common.compiler.support.JavassistCompiler.doCompile(JavassistCompiler.java:122) ~[dubbo-2.6.0.jar:2.6.0]
	at com.alibaba.dubbo.common.compiler.support.AbstractCompiler.compile(AbstractCompiler.java:58) ~[dubbo-2.6.0.jar:2.6.0]
	at com.alibaba.dubbo.common.compiler.support.AdaptiveCompiler.compile(AdaptiveCompiler.java:45) ~[dubbo-2.6.0.jar:2.6.0]
	at com.alibaba.dubbo.common.extension.ExtensionLoader.createAdaptiveExtensionClass(ExtensionLoader.java:726) ~[dubbo-2.6.0.jar:2.6.0]
	at com.alibaba.dubbo.common.extension.ExtensionLoader.getAdaptiveExtensionClass(ExtensionLoader.java:719) ~[dubbo-2.6.0.jar:2.6.0]
	at com.alibaba.dubbo.common.extension.ExtensionLoader.createAdaptiveExtension(ExtensionLoader.java:708) ~[dubbo-2.6.0.jar:2.6.0]
	... 26 common frames omitted


Process finished with exit code 1

原因推测

最开始我zookeeper下载在虚拟机内，最开始怀疑过是否是因为虚拟机的地址连接失败或者我zookeeper下载安装过程有误等原因，但是在Windows本地下载zookeeper后依旧失败
怀疑spring-dubbo和springboot的版本有对应，这个是网上搜的，但是试过之后好像没用，虽然最开始我启动成功是改了版本之后突然成功了，但是再改回来依旧成功（官方版本对应可参考这里（点击），虽然我觉得没用）
最后发现是
@SpringBootApplication //开启spring注解配置
@EnableDubboConfiguration //开启dubbo配置
注解有冲突，猜测两者都有有一些共同的功能导致的工程出现二义性啥的，也发现一个注解@EnableAutoConfiguration也同样可以实现对应的功能，似乎@SpringBootApplication包含了@EnableAutoConfiguration
解决方法：在启动类上使用@EnableAutoConfiguration或者@SpringBootApplication 其中一个注解就行，不用前两个

看着很短，好像一下就解决了，但是烦躁了三四天，都是一把辛酸泪

最后贴上我的代码
1.整体结构
在这里插入图片描述
common
只有写了一个方法，pom.xml不需要写什么依赖

provider
在这里插入图片描述
pom.xml

<?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>2.7.1</version>
<!--        <version>2.2.5.RELEASE</version>-->
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>dubbo-provider</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>dubbo-provider</name>
    <description>dubbo-provider</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>

        <!--Dubbo集成spring boot框架起步依赖-->
        <dependency>
            <groupId>com.alibaba.spring.boot</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>2.0.0</version>
            <optional>true</optional>
        </dependency>
        <!--注册中心-->
        <dependency>
            <groupId>com.101tec</groupId>
            <artifactId>zkclient</artifactId>
            <version>0.11</version>
            <optional>true</optional>
        </dependency>
        <!--接口工程-->
        <dependency>
            <groupId>org.example</groupId>
            <artifactId>dubbo-common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

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

application启动类

package com.example.provider;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;

@EnableAutoConfiguration
public class DubboProviderApplication {

    public static void main(String[] args) {
        SpringApplication.run(DubboProviderApplication.class, args);
    }

}

application.properties配置文件

#设置内嵌tomcat端口号
server.port=8081
#设置上下文根
server.servlet.context-path=/
#设置dubbo配置
spring.dubbo.application.name=dubbo-provider

#确定当前工程是一个服务提供者
spring.dubbo.server=true
#设置注册中心
spring.dubbo.registry=zookeeper://127.0.0.1:2181

spring.dubbo.protocol.port=-1	#这个不知道有什么用，找错的时候copy的，应该可以没有

接口实现类

package com.example.provider.service.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.example.common.service.StudentService;
import org.springframework.stereotype.Component;

@Component
@Service(interfaceClass = StudentService.class,version = "1.0.0",timeout = 15000)
//要引用com.alibaba.dubbo.config.annotation.Service的service注解
public class StudentServiceImpl implements StudentService {
    @Override
    public Integer queryAllStudentCount() {
        return 11110;
    }
}

consumer
在这里插入图片描述
需在pom.xml添加的依赖和provider一样

<?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>2.7.1</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>dubbo-consumer</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>dubbo-consumer</name>
    <description>dubbo-consumer</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!--Dubbo集成spring boot框架起步依赖-->
        <dependency>
            <groupId>com.alibaba.spring.boot</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>2.0.0</version>
        </dependency>
        <!--注册中心-->
        <dependency>
            <groupId>com.101tec</groupId>
            <artifactId>zkclient</artifactId>
            <version>0.11</version>
        </dependency>
        <!--接口工程-->
        <dependency>
            <groupId>org.example</groupId>
            <artifactId>dubbo-common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

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

application.properties配置文件

#设置内嵌tomcat端口号
server.port=8082
#设置上下文根
server.servlet.context-path=/
#设置dubbo配置

spring.dubbo.application.name=dubbo-consumer
#设置注册中心
spring.dubbo.registry=zookeeper://127.0.0.1:2181

application启动类

@EnableAutoConfiguration
public class DubboConsumerApplication {

    public static void main(String[] args) {
        SpringApplication.run(DubboConsumerApplication.class, args);
    }
}

Controller

package com.example.consumer.web;

import com.alibaba.dubbo.config.annotation.Reference;
import com.example.common.service.StudentService;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class StudentController {

    @Reference(interfaceClass = StudentService.class,version = "1.0.0",check = false)
    private StudentService studentService;

    @RequestMapping(value = "/student/count")
    public @ResponseBody Object studentCount(){

        Integer allStudentCount = studentService.queryAllStudentCount();
        return "学生总人数为：" + allStudentCount;
    }
}