<groupId>io.dubbo.springboot</groupId>版本不兼容dubbo-2.6.5

谁借莪１个温暖的怀抱￠ 2022-03-16 21:28 272阅读 0赞

###### 问题： ######

dubbo整合springboot时候，使用如下springboot-dubbo的jar包,搭配dubbo版本2.6.5

<dependency>
                <groupId>io.dubbo.springboot</groupId>
                <artifactId>spring-boot-starter-dubbo</artifactId>
                <version>1.0.0</version>
     </dependency>

报错日志：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'ServiceBean:com.alibaba.nacos.interfaces.ITestNacos:test-nacos2': Invocation of init method failed; nested exception is java.lang.NullPointerException
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1708) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:581) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:503) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:760) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    	at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    	at com.alibaba.nacos.example.spring.boot.NacosConfigApplication.main(NacosConfigApplication.java:23) [classes/:na]
    Caused by: java.lang.NullPointerException: null
    	at com.alibaba.dubbo.config.spring.ServiceBean.afterPropertiesSet(ServiceBean.java:184) ~[dubbo-2.6.5.jar:2.6.5]
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1767) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1704) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    	... 16 common frames omitted

经分析是因为 2.6.5版本的dubbo增加了ServiceBean,applicationEventPublisher，初始化报错。

###### 解决方法一： ######

如果使用 io.dubbo.springboot这个包，则搭配dubbo 2.6.2以下的版本：

<dependency>
                <groupId>io.dubbo.springboot</groupId>
                <artifactId>spring-boot-starter-dubbo</artifactId>
                <version>1.0.0</version>
     </dependency>

###### 解决方法二： ######

使用官方正常维护的Springboot-dubbo, com.alibaba.boot,则dubbo版本都可以兼容

<dependency>
                <groupId>com.alibaba.boot</groupId>
                <artifactId>dubbo-spring-boot-starter</artifactId>
                <version>0.2.1.RELEASE</version>
                <exclusions>
                    <exclusion>
                    <groupId>com.alibaba</groupId>
                    <artifactId>dubbo</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>