### Environment * Dubbo version: xxx * Operating System version: Mac OS X 10.14.3 * Java version: 1.8.0_202
### Steps to reproduce this issue 1. Kotlin integrated dubbo provider throws custom exceptions  2. 由于Kotlin中没有受检的异常 ```kotlin // provider impl fun createUser(user: User):User { // ... if(user.exited) { throws CustomException("user exited") } // ... } // consumer try { userService.createUser(user) } catch (ex: Exception) { logger.debug(ex) { "${ex.javaClass}" } // expected CustomException，actual UndeclaredThrowableException } ``` ```java java.lang.reflect.UndeclaredThrowableException: null at com.sun.proxy.$Proxy120.signup(Unknown Source) ~[na:na] ``` Since I am using kotlin, all can't declare an exception on the interface method like java. I tried kotlin to call java method and declare @Thtows(CustomException::class), this can't solve my problem. [ Full content available at: https://github.com/apache/incubator-dubbo/issues/3587 ] This message was relayed via gitbox.apache.org for [email protected]
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