- [ ] I have searched the
[issues](https://github.com/apache/incubator-dubbo/issues) of this repository
and believe that this is not a duplicate.
- [ ] I have checked the
[FAQ](https://github.com/apache/incubator-dubbo/blob/master/FAQ.md) of this
repository and believe that this is not a duplicate.
### Environment
* Dubbo version: xxx
* Operating System version: xxx
* Java version: xxx
### Steps to reproduce this issue
1. First, create an interface.
```
public interface DemoService {
String sayHello(String name);
}
```
2. Create a controller
```
@RestController
public class DemoController {
@Reference(version = "1.0.0")
private DemoService demoService;
@RequestMapping("/{name}")
public String say(@PathVariable("name") String name){
return demoService.sayHello(name);
}
}
```
3. Create a config class
```
@Configuration
public class DubboConfig {
@Bean(ReferenceAnnotationBeanPostProcessor.BEAN_NAME)
public ReferenceAnnotationBeanPostProcessor
referenceAnnotationBeanPostProcessor(){
return new ReferenceAnnotationBeanPostProcessor();
}
@ConditionalOnMissingBean
@Bean
public ApplicationConfig applicationConfig(){
ApplicationConfig applicationConfig = new
ApplicationConfig("dubbo-consumer-test");
applicationConfig.setId("dubbo-consumer-test");
applicationConfig.setDefault(true);
return applicationConfig;
}
@ConditionalOnMissingBean
@Bean
public ProtocolConfig protocolConfig(){
ProtocolConfig protocolConfig = new ProtocolConfig("dubbo");
protocolConfig.setId("dubbo");
protocolConfig.setClient("netty4");
protocolConfig.setServer("netty4");
protocolConfig.setDefault(true);
return protocolConfig;
}
@ConditionalOnMissingBean
@Bean
public RegistryConfig registryConfig(){
RegistryConfig registryConfig = new RegistryConfig("localhost:2181");
registryConfig.setId("zookeeper");
registryConfig.setDefault(true);
registryConfig.setProtocol("zookeeper");
return registryConfig;
}
}
```
4. Create a boot class
```
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
```
5. Invoke rest
```
$ curl -X GET -i 'http://localhost:8080/world'
```
throws exception like this(currently log's level is debug)
```
{"timestamp":1542107448435,"status":500,"error":"Internal Server
Error","exception":"java.lang.NullPointerException","message":"No message
available","path":"/world"}
```
starting log
```
2018-11-13 19:15:00.578 [main] WARN c.a.d.c.AbstractConfig - [DUBBO] null,
dubbo version: 2.6.1, current host: 192.168.99.1
java.lang.reflect.InvocationTargetException: null
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
~[?:1.8.0_181]
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
~[?:1.8.0_181]
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
~[?:1.8.0_181]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181]
at
com.alibaba.dubbo.config.AbstractConfig.toString(AbstractConfig.java:473)
[dubbo-2.6.1.jar:2.6.1]
at java.lang.String.valueOf(String.java:2994) [?:1.8.0_181]
at java.lang.StringBuilder.append(StringBuilder.java:131) [?:1.8.0_181]
at
com.alibaba.dubbo.config.spring.beans.factory.annotation.AbstractAnnotationConfigBeanBuilder.build(AbstractAnnotationConfigBeanBuilder.java:75)
[dubbo-2.6.1.jar:2.6.1]
at
com.alibaba.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor.buildReferenceBean(ReferenceAnnotationBeanPostProcessor.java:345)
[dubbo-2.6.1.jar:2.6.1]
at
com.alibaba.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor.access$100(ReferenceAnnotationBeanPostProcessor.java:61)
[dubbo-2.6.1.jar:2.6.1]
at
com.alibaba.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor$ReferenceFieldElement.inject(ReferenceAnnotationBeanPostProcessor.java:323)
[dubbo-2.6.1.jar:2.6.1]
at
org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
com.alibaba.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor.postProcessPropertyValues(ReferenceAnnotationBeanPostProcessor.java:88)
[dubbo-2.6.1.jar:2.6.1]
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264)
[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)
[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866)
[spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542)
[spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at
org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737)
[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at
org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:370)
[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at
org.springframework.boot.SpringApplication.run(SpringApplication.java:314)
[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at
org.springframework.boot.SpringApplication.run(SpringApplication.java:1162)
[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at
org.springframework.boot.SpringApplication.run(SpringApplication.java:1151)
[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at com.fft.dubbo.consumer.Application.main(Application.java:10)
[classes/:?]
Caused by: java.lang.IllegalStateException: Failed to check the status of the
service com.fft.dubbo.consumer.service.DemoService. No provider available for
the service com.fft.dubbo.consumer.service.DemoService:1.0.0 from the url
zookeeper://localhost:2181/com.alibaba.dubbo.registry.RegistryService?application=dubbo-consumer-test&default=true&dubbo=2.6.1&interface=com.fft.dubbo.consumer.service.DemoService&methods=sayHello&pid=11737®ister.ip=192.168.99.1&revision=1.0.0&side=consumer×tamp=1542107700378&version=1.0.0
to the consumer 192.168.99.1 use dubbo version 2.6.1
at
com.alibaba.dubbo.config.ReferenceConfig.createProxy(ReferenceConfig.java:422)
~[dubbo-2.6.1.jar:2.6.1]
at
com.alibaba.dubbo.config.ReferenceConfig.init(ReferenceConfig.java:333)
~[dubbo-2.6.1.jar:2.6.1]
at
com.alibaba.dubbo.config.ReferenceConfig.get(ReferenceConfig.java:163)
~[dubbo-2.6.1.jar:2.6.1]
at
com.alibaba.dubbo.config.spring.ReferenceBean.getObject(ReferenceBean.java:65)
~[dubbo-2.6.1.jar:2.6.1]
... 30 more
```
Application didn't exit. Here we change log's level == warn. When starting
application. It crash, throws exception like this
```
org.springframework.beans.factory.BeanCreationException: Error creating bean
with name 'demoController': Injection of @Reference dependencies failed; nested
exception is java.lang.IllegalStateException: Failed to check the status of the
service com.fft.dubbo.consumer.service.DemoService. No provider available for
the service com.fft.dubbo.consumer.service.DemoService:1.0.0 from the url
zookeeper://localhost:2181/com.alibaba.dubbo.registry.RegistryService?application=dubbo-consumer-test&default=true&dubbo=2.6.1&interface=com.fft.dubbo.consumer.service.DemoService&methods=sayHello&pid=11847®ister.ip=192.168.99.1&revision=1.0.0&side=consumer×tamp=1542108310318&version=1.0.0
to the consumer 192.168.99.1 use dubbo version 2.6.1
at
com.alibaba.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor.postProcessPropertyValues(ReferenceAnnotationBeanPostProcessor.java:92)
~[dubbo-2.6.1.jar:2.6.1]
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264)
~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)
~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866)
~[spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542)
~[spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
~[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at
org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737)
[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at
org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:370)
[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at
org.springframework.boot.SpringApplication.run(SpringApplication.java:314)
[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at
org.springframework.boot.SpringApplication.run(SpringApplication.java:1162)
[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at
org.springframework.boot.SpringApplication.run(SpringApplication.java:1151)
[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at com.fft.dubbo.consumer.Application.main(Application.java:10)
[classes/:?]
Caused by: java.lang.IllegalStateException: Failed to check the status of the
service com.fft.dubbo.consumer.service.DemoService. No provider available for
the service com.fft.dubbo.consumer.service.DemoService:1.0.0 from the url
zookeeper://localhost:2181/com.alibaba.dubbo.registry.RegistryService?application=dubbo-consumer-test&default=true&dubbo=2.6.1&interface=com.fft.dubbo.consumer.service.DemoService&methods=sayHello&pid=11847®ister.ip=192.168.99.1&revision=1.0.0&side=consumer×tamp=1542108310318&version=1.0.0
to the consumer 192.168.99.1 use dubbo version 2.6.1
at
com.alibaba.dubbo.config.ReferenceConfig.createProxy(ReferenceConfig.java:422)
~[dubbo-2.6.1.jar:2.6.1]
at
com.alibaba.dubbo.config.ReferenceConfig.init(ReferenceConfig.java:333)
~[dubbo-2.6.1.jar:2.6.1]
at
com.alibaba.dubbo.config.ReferenceConfig.get(ReferenceConfig.java:163)
~[dubbo-2.6.1.jar:2.6.1]
at
com.alibaba.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor.buildReferenceBean(ReferenceAnnotationBeanPostProcessor.java:352)
~[dubbo-2.6.1.jar:2.6.1]
at
com.alibaba.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor.access$100(ReferenceAnnotationBeanPostProcessor.java:61)
~[dubbo-2.6.1.jar:2.6.1]
at
com.alibaba.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor$ReferenceFieldElement.inject(ReferenceAnnotationBeanPostProcessor.java:323)
~[dubbo-2.6.1.jar:2.6.1]
at
org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
com.alibaba.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor.postProcessPropertyValues(ReferenceAnnotationBeanPostProcessor.java:88)
~[dubbo-2.6.1.jar:2.6.1]
... 17 more
```
Here's
[dubbo-consumer-test](https://github.com/chutian52/dubbo-consumer-test.git)
Also, if we didn't use log dependencies currently, there's no log also, it
didn't crash either.
It seems that `AbstractAnnotationConfigBeanBuilder#build()` does this
```
public final B build() throws Exception {
checkDependencies();
B bean = doBuild();
configureBean(bean);
// use AbractConfig#toString
if (logger.isInfoEnabled()) {
logger.info(bean + " has been built.");
}
return bean;
}
```
And `AbstractConfig#toString()`
```
@Override
public String toString() {
try {
StringBuilder buf = new StringBuilder();
buf.append("<dubbo:");
buf.append(getTagName(getClass()));
Method[] methods = getClass().getMethods();
for (Method method : methods) {
try {
String name = method.getName();
if ((name.startsWith("get") || name.startsWith("is"))
&& !"getClass".equals(name) && !"get".equals(name)
&& !"is".equals(name)
&& Modifier.isPublic(method.getModifiers())
&& method.getParameterTypes().length == 0
&& isPrimitive(method.getReturnType())) {
int i = name.startsWith("get") ? 3 : 2;
String key = name.substring(i, i + 1).toLowerCase() +
name.substring(i + 1);
Object value = method.invoke(this, new Object[0]);
if (value != null) {
buf.append(" ");
buf.append(key);
buf.append("=\"");
buf.append(value);
buf.append("\"");
}
}
} catch (Exception e) {
logger.warn(e.getMessage(), e);
}
}
buf.append(" />");
return buf.toString();
} catch (Throwable t) {
logger.warn(t.getMessage(), t);
return super.toString();
}
}
```
It invoked `getObject()` method, and then catched logs, but not throwed.
`ReferenceAnnotationBeanPostProcessor#buildReferenceBean`
```
private Object buildReferenceBean(Reference reference, Class<?> referenceClass)
throws Exception {
String referenceBeanCacheKey = generateReferenceBeanCacheKey(reference,
referenceClass);
ReferenceBean<?> referenceBean =
referenceBeansCache.get(referenceBeanCacheKey);
if (referenceBean == null) {
ReferenceBeanBuilder beanBuilder = ReferenceBeanBuilder
.create(reference, classLoader, applicationContext)
.interfaceClass(referenceClass);
referenceBean = beanBuilder.build();
referenceBeansCache.putIfAbsent(referenceBeanCacheKey,
referenceBean);
}
return referenceBean.get();
}
```
If we use log's level greater than info, `referenceBean.get()` will work, the
application will crash.
So, Dubbo should have the same behavior whatever log's level is?
[ Full content available at:
https://github.com/apache/incubator-dubbo/issues/2784 ]
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