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Posted to notifications@dubbo.apache.org by GitBox <gi...@apache.org> on 2022/02/01 17:52:18 UTC
[GitHub] [dubbo] lifes opened a new issue #9647: 注解的方式配置，@ Configuration @Bean @DubboReference（若配置methods则报错）
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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[GitHub] [dubbo] CrazyHZM closed issue #9647: 注解的方式配置，@ Configuration @Bean @DubboReference（若配置methods则报错）
Posted by GitBox <gi...@apache.org>.
CrazyHZM closed issue #9647:
URL: https://github.com/apache/dubbo/issues/9647
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[GitHub] [dubbo] monkeycraps commented on issue #9647: 注解的方式配置，@ Configuration @Bean @DubboReference（若配置methods则报错）
Posted by GitBox <gi...@apache.org>.
monkeycraps commented on issue #9647:
URL: https://github.com/apache/dubbo/issues/9647#issuecomment-1028520242
parameters 为空时，会被转为null，并报错；这个参数文档看还没有
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[GitHub] [dubbo] BurningCN commented on issue #9647: 注解的方式配置，@ Configuration @Bean @DubboReference（若配置methods则报错）
Posted by GitBox <gi...@apache.org>.
BurningCN commented on issue #9647:
URL: https://github.com/apache/dubbo/issues/9647#issuecomment-1034443807
两位谁方便提交个pr吗？没有的话就我来处理下
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[GitHub] [dubbo] BurningCN commented on issue #9647: 注解的方式配置，@ Configuration @Bean @DubboReference（若配置methods则报错）
Posted by GitBox <gi...@apache.org>.
BurningCN commented on issue #9647:
URL: https://github.com/apache/dubbo/issues/9647#issuecomment-1033292003
@monkeycraps
看了下，的确是这样。目前我的两个解决方式是在`DubboAnnotationUtils#convertParameters`在执行`if (ArrayUtils.isEmpty(parameters))`的时候返回`Collections.emptyMap()`而不是原有返回`null`，或者如下调整也可以解决
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[GitHub] [dubbo] monkeycraps commented on issue #9647: 注解的方式配置，@ Configuration @Bean @DubboReference（若配置methods则报错）
Posted by GitBox <gi...@apache.org>.
monkeycraps commented on issue #9647:
URL: https://github.com/apache/dubbo/issues/9647#issuecomment-1032423929
我是按上面的代码写的，没有什么特别，很好复现，直接在 dubbo 源代码的 demo 里复现的
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[GitHub] [dubbo] BurningCN commented on issue #9647: 注解的方式配置，@ Configuration @Bean @DubboReference（若配置methods则报错）
Posted by GitBox <gi...@apache.org>.
BurningCN commented on issue #9647:
URL: https://github.com/apache/dubbo/issues/9647#issuecomment-1032422062
能否给下完整的项目工程用例代码
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[GitHub] [dubbo] chenhuaming commented on issue #9647: 注解的方式配置，@ Configuration @Bean @DubboReference（若配置methods则报错）
Posted by GitBox <gi...@apache.org>.
chenhuaming commented on issue #9647:
URL: https://github.com/apache/dubbo/issues/9647#issuecomment-1033256995
> 能否给下完整的项目工程用例代码
官方的示例代码，添加
@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<>();
}
}
即可复现
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[GitHub] [dubbo] BurningCN edited a comment on issue #9647: 注解的方式配置，@ Configuration @Bean @DubboReference（若配置methods则报错）
Posted by GitBox <gi...@apache.org>.
BurningCN edited a comment on issue #9647:
URL: https://github.com/apache/dubbo/issues/9647#issuecomment-1033292003
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[GitHub] [dubbo] CrazyHZM commented on issue #9647: 注解的方式配置，@ Configuration @Bean @DubboReference（若配置methods则报错）
Posted by GitBox <gi...@apache.org>.
CrazyHZM commented on issue #9647:
URL: https://github.com/apache/dubbo/issues/9647#issuecomment-1084327410
Resolved at #9693
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