Conversion failed exception from String to bson ObjectId on Mongo calls

[Kramani99]

Hi, We are getting following error logged in Dynatrace on all Mongo calls even though app functions normally and we are also unable to see the exception when debugging through IDE: Exception: org.springframework.core.convert.ConversionFailedException Message: Failed to convert from type [java.lang.String] to type [org.bson.types.ObjectId] for value ''; nested exception is java.lang.IllegalArgumentException: invalid hexadecimal representation of an ObjectId: [] Stacktrace: org.springframework.core.convert.support.ConversionUtils.invokeConverter(ConversionUtils.java:47) org.springframework.core.convert.support.GenericConversionService.convert(GenericConversionService.java:191) org.springframework.core.convert.support.GenericConversionService.convert(GenericConversionService.java:174) org.springframework.data.mongodb.core.convert.MongoConverter.convertId(MongoConverter.java:146) org.springframework.data.mongodb.core.convert.QueryMapper.convertId(QueryMapper.java:636) org.springframework.data.mongodb.core.convert.QueryMapper.getMappedValue(QueryMapper.java:384) org.springframework.data.mongodb.core.convert.QueryMapper.getMappedObjectForField(QueryMapper.java:243) org.springframework.data.mongodb.core.convert.QueryMapper.getMappedObject(QueryMapper.java:152) org.springframework.data.mongodb.core.convert.QueryMapper.getMappedKeyword(QueryMapper.java:285) org.springframework.data.mongodb.core.convert.QueryMapper.getMappedObject(QueryMapper.java:124) org.springframework.data.mongodb.core.MongoTemplate.doFindOne(MongoTemplate.java:2473) org.springframework.data.mongodb.core.MongoTemplate.findOne(MongoTemplate.java:820) org.springframework.data.mongodb.core.MongoTemplate.findOne(MongoTemplate.java:807) org.springframework.data.mongodb.core.MongoTemplate$$FastClassBySpringCGLIB$$5a5a6b8.invoke() org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:769) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:747) org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:93) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:747) org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:689) com.company.config.MongoTemplateWithMetrics$$EnhancerBySpringCGLIB$$.findOne com.company.dao.connect.AppointmentDAOConnect.findByParameterAppointment(AppointmentDAOConnect.java:689) com.company.dao.connect.AppointmentDAOConnect$$FastClassBySpringCGLIB$$40444430.invoke() org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:769) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:747) org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:747) org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:689) com.company.dao.connect.AppointmentDAOConnect$$EnhancerBySpringCGLIB$$.findByParameterAppointment

How can I go about debugging the issue?

[christophstrobl]

Which version of data-mongodb are you using? There's a guard in the conversion to check validity of a given String representation via ObjectId.isValid. A complete minimal sample (something that we can unzip or git clone, build, and deploy) that reproduces the problem would help spot the issue.

[Kramani99]

We are using spring boot mongo 2.2.0. Is this a known issue or should I go ahead and create a sample project?