Got an exception when debugging

[ShuaiJunlan]

• I have searched the issues of this repository and believe that this is not a duplicate.
• I have checked the FAQ of this repository and believe that this is not a duplicate.

Environment

• Dubbo version: 2.7.0-SNAPSHOT
• Operating System version: Ubuntu 18.04 LTS
• Java version: 1.8.0_181

Step to reproduce this issue

1. Making a breakpoint in the 83th line of class org.apache.dubbo.config.spring.ReferenceBean
2. Debugging dubbo-consumer-demo

Got an exception

java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.dubbo.config.AbstractConfig.toString(AbstractConfig.java:465)
	at org.apache.dubbo.config.spring.ReferenceBean.afterPropertiesSet(ReferenceBean.java:83)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1688)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1626)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:742)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)
	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
	at cn.shuaijunlan.dubbo.learning.main.Main.main(Main.java:14)
Caused by: java.lang.IllegalStateException: No such application config! Please add <dubbo:application name="..." /> to your spring config.
	at org.apache.dubbo.config.AbstractInterfaceConfig.checkApplication(AbstractInterfaceConfig.java:143)
	at org.apache.dubbo.config.ReferenceConfig.init(ReferenceConfig.java:280)
	at org.apache.dubbo.config.ReferenceConfig.get(ReferenceConfig.java:165)
	at org.apache.dubbo.config.spring.ReferenceBean.getObject(ReferenceBean.java:66)
	... 20 more

[diecui1202]

@ShuaiJunlan Make sure <dubbo:application name="..." /> has been configured.

[zonghaishang]

Intellij Idea -> Prefrencence -> Build -> Debuger -> Data Views -> Java uncheck Enable 'toString' object view:

If you have any questions, feel free to open