Spring 与 MongoTemplate：java.lang.String com.mongodb.connection.ClusterSettings.getDescription()

Question

我正在尝试创建一个简单的应用程序，使用 MongoTemplate 处理 MongoDB 数据库。然而，这个方法：

    @Bean
    public MongoTemplate mongoTemplate() throws Exception {
        MongoTemplate template = new MongoTemplate(mongoClient(), this.mongodbName);
        return template;
    }

因以下异常而失败：

Error creating bean with name 'mongoTemplate' defined in class path resource [com/myapp/tryout/repository/config/MongoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.core.MongoTemplate]: Factory method 'mongoTemplate' threw exception; nested exception is java.lang.NoSuchMethodError: 'java.lang.String com.mongodb.connection.ClusterSettings.getDescription()'

pom.xml 具有以下依赖项：

    <dependency>
      <groupId>org.springframework.data</groupId>
      <artifactId>spring-data-mongodb</artifactId>
      <version>3.0.1.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.mongodb</groupId>
      <artifactId>mongo-java-driver</artifactId>
      <version>3.12.5</version>
    </dependency>

Spring版本是5.2.6。com.mongodb.connection.ClusterSettings 的文档表明该方法确实已被弃用。此外，通过查看 ClusterSettings 类，我找不到此方法。

我的问题是：是否与当前版本的 Spring 和 mongo-java-driver 不匹配有关？如果是，您能否指出要使用的正确包组合？

如果您需要更多信息，请询问。我很乐意提供它。

补充：啊，讽刺……我发现了这个

    private static Cluster createCluster(final MongoClientSettings settings,
                                         @Nullable final MongoDriverInformation mongoDriverInformation) {
        notNull("settings", settings);
        List<MongoCredential> credentialList = settings.getCredential() != null ? singletonList(settings.getCredential())
                : Collections.<MongoCredential>emptyList();
        return new DefaultClusterFactory().createCluster(settings.getClusterSettings(), settings.getServerSettings(),
                settings.getConnectionPoolSettings(), getStreamFactory(settings, false), getStreamFactory(settings, true), credentialList,
                getCommandListener(settings.getCommandListeners()), settings.getApplicationName(), mongoDriverInformation,
                settings.getCompressorList());
    }

在 com.mongodb.client.internal.MongoClientImpl 中。

和这个

    public Cluster createCluster(final ClusterSettings clusterSettings, final ServerSettings serverSettings,
                                 final ConnectionPoolSettings connectionPoolSettings, final StreamFactory streamFactory,
                                 final StreamFactory heartbeatStreamFactory, final List<MongoCredential> credentialList,
                                 final CommandListener commandListener, final String applicationName,
                                 final MongoDriverInformation mongoDriverInformation,
                                 final List<MongoCompressor> compressorList) {

        ClusterId clusterId = new ClusterId(clusterSettings.getDescription());

在 com.mongodb.connection.DefaultClusterFactory 中，已弃用。

Answer 1

Spring 3.x 支持 mongodb java 版本 4.x。mongo-java-driver 和 mongodb-driver \xe2\x80\x9cuber-jars\xe2\x80\x9d 不再发布，如链接页面中所述。在 3.x 和 4.x mongo 驱动程序 java 版本之间，uber jar 依赖项已分为核心依赖项和同步/反应流依赖项。我能够使用 3.x 版本重现该问题。一旦我更新以纠正 4.x 依赖项问题就消失了。

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所以正确的依赖关系按以下顺序排列

\n

<dependency>\n  <groupId>org.springframework.data</groupId>\n  <artifactId>spring-data-mongodb</artifactId>\n  <version>3.0.1.RELEASE</version>\n</dependency>\n\n<dependency>\n  <groupId>org.mongodb</groupId>\n  <artifactId>mongodb-driver-core</artifactId>\n  <version>4.0.4</version>\n</dependency>\n\n<dependency>\n  <groupId>org.mongodb</groupId>\n  <artifactId>mongodb-driver-sync</artifactId>\n  <version>4.0.4</version>\n</dependency>\n

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https://mongodb.github.io/mongo-java-driver/4.0/upgrading/#upgrading-from-the-3-12-java-driver \n https://docs.spring.io/spring-data/ mongodb/docs/current/reference/html/#upgrading.2-3

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