mongodbspring-bootaxon-framework

Axon extensions.mongo 4.3 in spring boot: noSuchMethodError - com.mongodb.MongoClient

i'm trying to run mvn clean install on a spring boot project with Axon's extensions.mongo dependency. The mongo database is up and running in a docker container

in the pom i have:

<dependency>
    <groupId>org.axonframework.extensions.mongo</groupId>
    <artifactId>axon-mongo</artifactId>
    <version>4.3</version>
</dependency>

Then i have a @Configuration class which has - among others, these members:

 @Value("${spring.data.mongodb.host:127.0.0.1}")
    private String mongoHost;

    @Value("${spring.data.mongodb.port:27017}")
    private int mongoPort;

    @Value("${spring.data.mongodb.database:user}")
    private String mongoDatabase;

    @Bean
    public MongoClient mongoClient() {
        var mongoFactory = new MongoFactory();
        mongoFactory.setMongoAddresses(Collections.singletonList(new ServerAddress(mongoHost, mongoPort)));

        return mongoFactory.createMongo();
    }

Then when running mvn clean install i get this stack trace:

java.lang.IllegalStateException: Failed to load ApplicationContext
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoClient' defined in com.springbank.user.core.configuration.AxonConfig: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.mongodb.MongoClient]: Factory method 'mongoClient' threw exception; nested exception is java.lang.NoSuchMethodError: 'com.mongodb.connection.ConnectionPoolSettings$Builder com.mongodb.connection.ConnectionPoolSettings$Builder.maxWaitQueueSize(int)'
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.mongodb.MongoClient]: Factory method 'mongoClient' threw exception; nested exception is java.lang.NoSuchMethodError: 'com.mongodb.connection.ConnectionPoolSettings$Builder com.mongodb.connection.ConnectionPoolSettings$Builder.maxWaitQueueSize(int)'
Caused by: java.lang.NoSuchMethodError: 'com.mongodb.connection.ConnectionPoolSettings$Builder com.mongodb.connection.ConnectionPoolSettings$Builder.maxWaitQueueSize(int)'
Solution

  • Spring Boot will auto-configure the MongoClient when it is available on the classpath. You only need to specify the proper spring.mongo properties in your application.properties (which you already use judging by your configuration).

    So the easy fix is to just remove this @Bean method.

    If you really want to use that MongoFactory you will need to figure out which version of MongoDB (the Mongo Client in this case) is compatible with it.