lifes opened a new issue #9647:
URL: https://github.com/apache/dubbo/issues/9647
env
dubbo3.0.5
1. 接口定义
```
public interface Service2 {
String sayHello(String name);
String sayHello(ClientInfo clientInfo, String name);
default CompletableFuture<String> sayHelloAsync(String name){
return CompletableFuture.completedFuture(sayHello(name));
}
default CompletableFuture<String> sayHelloAsync(ClientInfo clientInfo,
String name){
return CompletableFuture.completedFuture(sayHello(clientInfo, name));
}
}
```
2.
```
@Configuration
public class DubboConsumerConfiguration {
@Bean
@DubboReference(
check = false,
methods = {
// 如果删除这一行，则不报错
//仅仅配置@Method(name = "sayHelloAsync"），报错
//换成xml配置不报错
//@DubboReference直接在filed上注入不报错
@Method(name = "sayHelloAsync", onreturn =
"service2_sayHelloAsync.onreturn")
}
)
public ReferenceBean<Service2> service2() {
return new ReferenceBean<>();
}
}
```
3. 回调接口
```
public interface Notify {
void onreturn(String ret, String req);
void onthrow(Throwable ex, String req);
}
```
```
@Component("service2_sayHelloAsync")
public class NotifyImpl implements Notify{
@Override
public void onreturn(String ret, String name) {
System.out.println("callback调用");
var clientAtt =
RpcContext.getClientAttachment().getObjectAttachments();
var serverAtt =
RpcContext.getServerAttachment().getObjectAttachments();
var serverCtx = RpcContext.getServerContext();
var serviceCtx = RpcContext.getServiceContext();
System.out.println("clientAtt" + JSON.toJSONString(clientAtt));
System.out.println("serverAtt" + JSON.toJSONString(serverAtt));
System.out.println("serverCtx" +
JSON.toJSONString(serverCtx.getObjectAttachments()));
System.out.println("serviceCtx" +
JSON.toJSONString(serviceCtx.getObjectAttachments()));
System.out.println("callback调用2");
}
@Override
public void onthrow(Throwable ex, String name) {
}
}
```
报错
> Caused by: org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'service2' defined in class path resource
[org/chm/dubboexample/application1/DubboConsumerConfiguration.class]:
Invocation of init method failed; nested exception is
java.lang.NullPointerException
> at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1708)
> at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:581)
> at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:503)
> at
org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317)
> at
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
> at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315)
> at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
> at
org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:251)
> at
org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138)
> at
org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1065)
> at
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:584)
> ... 19 more
> Caused by: java.lang.NullPointerException
> at
org.apache.dubbo.config.spring.reference.ReferenceBeanSupport.convertToString(ReferenceBeanSupport.java:174)
> at
org.apache.dubbo.config.spring.reference.ReferenceBeanSupport.convertToString(ReferenceBeanSupport.java:186)
> at
org.apache.dubbo.config.spring.reference.ReferenceBeanSupport.convertToString(ReferenceBeanSupport.java:178)
> at
org.apache.dubbo.config.spring.reference.ReferenceBeanSupport.generateReferenceKey(ReferenceBeanSupport.java:129)
> at
org.apache.dubbo.config.spring.reference.ReferenceBeanSupport.generateReferenceKey(ReferenceBeanSupport.java:243)
> at
org.apache.dubbo.config.spring.reference.ReferenceBeanManager.addReference(ReferenceBeanManager.java:70)
> at
org.apache.dubbo.config.spring.ReferenceBean.afterPropertiesSet(ReferenceBean.java:242)
> at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1767)
> at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1704)
> ... 29 more
> 2022-02-02 00:28:14.033 WARN 11163 --- [ Thread-5]
c.a.nacos.common.notify.NotifyCenter : [NotifyCenter] Start destroying
Publisher
> 2022-02-02 00:28:14.033 WARN 11163 --- [ Thread-5]
c.a.nacos.common.notify.NotifyCenter : [NotifyCenter] Destruction of the end
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