dubbo2.7.8-springboot-2.3.0.REALEASE使用http协议时报错

报错信息如下:
java.lang.IllegalStateException: Extension instance (name: http, class: interface org.apache.dubbo.rpc.Protocol) couldn't be instantiated: tried to access class com.googlecode.jsonrpc4j.HttpException from class org.apache.dubbo.rpc.protocol.http.HttpProtocol
at org.apache.dubbo.common.extension.ExtensionLoader.createExtension(ExtensionLoader.java:665) ~[dubbo-2.7.8.jar:2.7.8]
at org.apache.dubbo.common.extension.ExtensionLoader.getExtension(ExtensionLoader.java:429) ~[dubbo-2.7.8.jar:2.7.8]
at org.apache.dubbo.common.extension.ExtensionLoader.getExtension(ExtensionLoader.java:413) ~[dubbo-2.7.8.jar:2.7.8]
at org.apache.dubbo.config.ServiceConfig.findConfigedPorts(ServiceConfig.java:644) ~[dubbo-2.7.8.jar:2.7.8]
at org.apache.dubbo.config.ServiceConfig.doExportUrlsFor1Protocol(ServiceConfig.java:444) ~[dubbo-2.7.8.jar:2.7.8]
at org.apache.dubbo.config.ServiceConfig.doExportUrls(ServiceConfig.java:325) ~[dubbo-2.7.8.jar:2.7.8]
at org.apache.dubbo.config.ServiceConfig.doExport(ServiceConfig.java:300) ~[dubbo-2.7.8.jar:2.7.8]
at org.apache.dubbo.config.ServiceConfig.export(ServiceConfig.java:206) ~[dubbo-2.7.8.jar:2.7.8]
at org.apache.dubbo.config.bootstrap.DubboBootstrap.lambda$exportServices$15(DubboBootstrap.java:1103) ~[dubbo-2.7.8.jar:2.7.8]
at java.util.HashMap$Values.forEach(HashMap.java:981) ~[na:1.8.0_261]
at org.apache.dubbo.config.bootstrap.DubboBootstrap.exportServices(DubboBootstrap.java:1090) ~[dubbo-2.7.8.jar:2.7.8]
at org.apache.dubbo.config.bootstrap.DubboBootstrap.start(DubboBootstrap.java:901) ~[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:172) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:403) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:360) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:897) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:553) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at com.xdclass.user.service.ServiceApplication.main(ServiceApplication.java:19) [classes/:na]
Caused by: java.lang.IllegalAccessError: tried to access class com.googlecode.jsonrpc4j.HttpException from class org.apache.dubbo.rpc.protocol.http.HttpProtocol
at org.apache.dubbo.rpc.protocol.http.HttpProtocol.(HttpProtocol.java:58) ~[dubbo-2.7.8.jar:2.7.8]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_261]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_261]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_261]
at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_261]
at java.lang.Class.newInstance(Class.java:442) ~[na:1.8.0_261]
at org.apache.dubbo.common.extension.ExtensionLoader.createExtension(ExtensionLoader.java:635) ~[dubbo-2.7.8.jar:2.7.8]
... 28 common frames omitted

2020-12-17 20:54:06.441 INFO 6960 --- [tor-Framework-0] o.a.c.f.imps.CuratorFrameworkImpl : backgroundOperationsLoop exiting
2020-12-17 20:54:06.445 INFO 6960 --- [ main] org.apache.zookeeper.ZooKeeper : Session: 0x100155d3eb2000e closed
2020-12-17 20:54:06.445 INFO 6960 --- [ain-EventThread] org.apache.zookeeper.ClientCnxn : EventThread shut down for session: 0x100155d3eb2000e
2020-12-17 20:54:10.497 INFO 6960 --- [ main] f.a.ReferenceAnnotationBeanPostProcessor : class org.apache.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor was destroying!
请求帮忙解答一下，谢谢！