Spring Data MongoDB with Java 8 LocalDate MappingException - spring

Question

I try to use the LocalTime from Java 8 Date Time API with Spring Data MongoDB. Inserting the document works as expected, but when I try to read the document, I get the following error:
Exception in thread "main" java.lang.IllegalStateException: Failed to execute CommandLineRunner
at org.springframework.boot.SpringApplication.runCommandLineRunners(SpringApplication.java:637)
....
Caused by: org.springframework.data.mapping.model.MappingException: No property null found on entity class java.time.LocalDate to bind constructor parameter to!
at org.springframework.data.mapping.model.PersistentEntityParameterValueProvider.getParameterValue(PersistentEntityParameterValueProvider.java:74)
at org.springframework.data.mapping.model.SpELExpressionParameterValueProvider.getParameterValue(SpELExpressionParameterValueProvider.java:63)
at org.springframework.data.convert.ReflectionEntityInstantiator.createInstance(ReflectionEntityInstantiator.java:71)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:257)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:237)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter.readValue(MappingMongoConverter.java:1109)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter.access$100(MappingMongoConverter.java:78)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter$MongoDbPropertyValueProvider.getPropertyValue(MappingMongoConverter.java:1058)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter.getValueInternal(MappingMongoConverter.java:789)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter$1.doWithPersistentProperty(MappingMongoConverter.java:270)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter$1.doWithPersistentProperty(MappingMongoConverter.java:263)
at org.springframework.data.mapping.model.BasicPersistentEntity.doWithProperties(BasicPersistentEntity.java:261)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:263)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:237)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:201)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:197)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:78)
at org.springframework.data.mongodb.core.MongoTemplate$ReadDbObjectCallback.doWith(MongoTemplate.java:2005)
at org.springframework.data.mongodb.core.MongoTemplate.executeFindMultiInternal(MongoTemplate.java:1699)
at org.springframework.data.mongodb.core.MongoTemplate.doFind(MongoTemplate.java:1522)
at org.springframework.data.mongodb.core.MongoTemplate.doFind(MongoTemplate.java:1506)
at org.springframework.data.mongodb.core.MongoTemplate.find(MongoTemplate.java:532)
at org.springframework.data.mongodb.repository.support.SimpleMongoRepository.findAll(SimpleMongoRepository.java:217)
at org.springframework.data.mongodb.repository.support.SimpleMongoRepository.findAll(SimpleMongoRepository.java:174)
at org.springframework.data.mongodb.repository.support.SimpleMongoRepository.findAll(SimpleMongoRepository.java:44)
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:483)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.executeMethodOn(RepositoryFactorySupport.java:358)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:343)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
at com.sun.proxy.$Proxy28.findAll(Unknown Source)
at hello.Application.run(Application.java:36)
at org.springframework.boot.SpringApplication.runCommandLineRunners(SpringApplication.java:634)
... 5 more
I tried this with the example from the Spring website: http://spring.io/guides/gs/accessing-data-mongodb/
I just changed to Customer to have a birthdate:
package hello;
import org.springframework.data.annotation.Id;
import java.time.LocalDate;
public class Customer {
#Id
private String id;
private String firstName;
private String lastName;
private LocalDate birthDay;
public Customer() {}
public Customer(String firstName, String lastName, LocalDate birthDay) {
this.firstName = firstName;
this.lastName = lastName;
this.birthDay = birthDay;
}
#Override
public String toString() {
return String.format(
"Customer[id=%s, firstName='%s', lastName='%s']",
id, firstName, lastName);
}
}

Answer 1

I wrote this little bit of code for all 4 of these conversion options:
DateToLocalDateTimeConverter
DateToLocalDateConverter
LocalDateTimeToDateConverter
LocalDateToDateConverter
Here is an example
public class DateToLocalDateTimeConverter implements Converter<Date, LocalDateTime> {
#Override
public LocalDateTime convert(Date source) {
return source == null ? null : LocalDateTime.ofInstant(source.toInstant(), ZoneId.systemDefault());
}
}
All example here.
Then by including this in the xml configuration for the mongodb connection I was able to work in java 8 dates with mongodb (remember to add all the converters):
<mongo:mapping-converter>
<mongo:custom-converters>
<mongo:converter>
<bean class="package.DateToLocalDateTimeConverter" />
</mongo:converter>
</mongo:custom-converters>
</mongo:mapping-converter>

Answer 2

Now problem is resolved:
https://jira.spring.io/browse/DATAMONGO-1102
But Spring Data doesn't support ZonedDateTime now, only Local.

Answer 3

This is currently not supported mostly due to the fact that MongoDB doesn't support storing Java 8 date time types right now. I suggest to turn the internal property into a legacy Date one and do the conversions on the API of the domain class (as you would do with Hibernate and JodaTime e.g.).