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  1. Java Driver
  2. JAVA-5575

Java Driver allows inserting invalid UTF-8 as string values

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    • Type: Icon: Bug Bug
    • Resolution: Won't Fix
    • Priority: Icon: Minor - P4 Minor - P4
    • None
    • Affects Version/s: 5.1.2
    • Component/s: Codecs
    • None
    • Java Drivers
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      1. What would you like to communicate to the user about this feature?
      2. Would you like the user to see examples of the syntax and/or executable code and its output?
      3. Which versions of the driver/connector does this apply to?

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      1. What would you like to communicate to the user about this feature? 2. Would you like the user to see examples of the syntax and/or executable code and its output? 3. Which versions of the driver/connector does this apply to?

      Summary

      Inserting a BSON document with the Java String "\uD83E" as one of its fields values, results in the field containing invalid utf-8 data.

      Please provide the version of the driver. If applicable, please provide the MongoDB server version and topology (standalone, replica set, or sharded cluster).

      Driver version: 5.1.2

      MongoDB server version: 7.0.12

      How to Reproduce

      Run the following code:

       

      package org.example;

import com.mongodb.ConnectionString;
import com.mongodb.client.MongoClients;
import org.bson.Document;

public class Main {
  public static void main(String[] args) {
    var connectionString = new ConnectionString(System.getenv("MONGODB_URL"));
    try (var client = MongoClients.create(connectionString)) {
      var database = client.getDatabase(connectionString.getDatabase());
      var collection = database.getCollection("_utf-8-test");
      var document = new Document();
      document.append("test", "\uD83E");
      collection.insertOne(document);
    }
  }
}

       

      Additional Background

      If you try to read the document using the Rust driver you will get the following result:

       

      Raw document: RawDocumentBuf {
    data: "24000000075f69640066c355aaf91cda3cd766501402746573740004000000eda0be0000",
}
Error: Error { kind: BsonDeserialization(DeserializationError { message: "invalid utf-8 sequence of 1 bytes from index 0" }), labels: {}, wire_version: None, source: None }

       

            Assignee:
            valentin.kovalenko@mongodb.com Valentin Kavalenka
            Reporter:
            asger@princh.com Asger Drewsen
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              Created:
              Updated:
              Resolved: