MongoDB Java Inserting Throws org.bson.codecs.configuration.CodecConfigurationException: Can't find a codec for class io.github.ilkgunel.mongodb.Pojo

Question

I\'m learning MongoDB with Java. I\'m trying to insert data to MongoDB with Java driver. I\'m doing inserting like in MongoDB tutorial and every thing is okey. But if I want

Answer 1

I resolve it by adding the spring-boot-starter-data-mongodb dependency in your pom.xml or your build.gradle.

compile group: 'org.springframework.boot', name: 'spring-boot-starter-data-mongodb', version: '2.2.4.RELEASE'

Answer 2

Documentation: MongoDB Driver Quick Start - POJOs

After following the above document, if you are still getting error, then

you could be using a generic document inside your collection like

class DocStore {
  String docId:
  String docType;
  Object document; // this will cause the BSON cast to throw a codec error
  Map<String, Object> document; // this won't
}

And still, you would want to cast your document from POJO to Map

mkyong tutorial could help.

As for the fetch, it works as expected but you might want to cast from Map to your POJO as a post-processing step, we can find some good answers here

Hope it helps!