Java Mongo驱动程序无意中连接到本地主机

我下载了用于java的mongo驱动程序（mongo-java-driver-3.12.4.jar），并将MongoClient连接到远程主机

与远程主机的连接已成功建立。 但除此之外，日志中还有错误消息，表明驱动程序试图连接到没有运行mongo db的本地主机：

09:52:52,082 INFO  [org.mongodb.driver.cluster] (default task-1) Cluster created with settings {hosts=[127.0.0.1:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms', maxWaitQueueSize=500}
09:52:52,843 INFO  [org.mongodb.driver.cluster] (default task-1) Cluster created with settings {hosts=[remoteHost:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms', maxWaitQueueSize=500}
09:52:52,879 INFO  [org.mongodb.driver.cluster] (default task-1) Cluster description not yet available. Waiting for 30000 ms before timing out
09:52:53,159 INFO  [org.mongodb.driver.connection] (cluster-ClusterId{value='5ef457d443933341aa40d5f3', description='null'}-remoteHost:27017) Opened connection [connectionId{localValue:2, serverValue:373}] to remoteHost:27017
09:52:53,219 INFO  [org.mongodb.driver.cluster] (cluster-ClusterId{value='5ef457d443933341aa40d5f3', description='null'}-remoteHost:27017) Monitor thread successfully connected to server with description ServerDescription{address=remoteHost:27017, type=STANDALONE, state=CONNECTED, ok=true, version=ServerVersion{versionList=[3, 6, 18]}, minWireVersion=0, maxWireVersion=6, maxDocumentSize=16777216, logicalSessionTimeoutMinutes=30, roundTripTimeNanos=54329200}
09:52:53,707 INFO  [org.mongodb.driver.connection] (default task-1) Opened connection [connectionId{localValue:3, serverValue:374}] to remoteHost:27017
09:52:54,198 INFO  [org.mongodb.driver.cluster] (cluster-ClusterId{value='5ef457d443933341aa40d5f2', description='null'}-127.0.0.1:27017) Exception in monitor thread while connecting to server 127.0.0.1:27017: com.mongodb.MongoSocketOpenException: Exception opening socket
    at com.mongodb.internal.connection.SocketStream.open(SocketStream.java:70)
    at com.mongodb.internal.connection.InternalStreamConnection.open(InternalStreamConnection.java:128)
    at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:117)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.net.ConnectException: Connection refused: connect
    at java.net.TwoStacksPlainSocketImpl.socketConnect(Native Method)
    at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
    at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
    at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
    at java.net.PlainSocketImpl.connect(Unknown Source)
    at java.net.SocksSocketImpl.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at com.mongodb.internal.connection.SocketStreamHelper.initialize(SocketStreamHelper.java:64)
    at com.mongodb.internal.connection.SocketStream.initializeSocket(SocketStream.java:79)
    at com.mongodb.internal.connection.SocketStream.open(SocketStream.java:65)
    ... 3 more

我使用

MongoClient（服务器地址地址、MongoCredential凭证、MongoClientOptions）

设置到远程主机的连接设置。我从不使用localhost或127.0.0.1

为什么驱动程序会尝试连接到本地主机，更重要的是，如何禁用此行为？：）

编辑： 以下是初始化MongoClient的方式：

{
    ...
    String connectionString = "mongodb://user:password@remoteHost:27017/";
    MongoClientURI clientURI = new MongoClientURI(connectionString);
    mongoClient = new MongoClient(createServerAddress(clientURI.getHosts().get(0)), clientURI.getCredentials(), addOptions(clientURI.getOptions()));
    MongoDatabase db = mongoClient.getDatabase(dbName);
    ...
}

private ServerAddress createServerAddress(String host) {
    if (host.contains(":")) {
        String[] parts = host.split(":");
        return new ServerAddress(parts[0], Integer.parseInt(parts[1]));
    } else {
        return new ServerAddress(host);
    }
}

private MongoClientOptions addOptions(MongoClientOptions options) {
    Builder builder = new Builder(options);

    File ksFile = new File(config.getKeystorePath()));
    char[] password = config.getKeystorePassword()).toCharArray();

    if (ksFile.exists()) {
        try {
            KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());

            try (FileInputStream fis = new FileInputStream(ksFile)) {
                ks.load(fis, password);
            }

            TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
            tmf.init(ks);

            SSLContext sslContext = SSLContext.getInstance("TLS");
            sslContext.init(null, tmf.getTrustManagers(), null);
            builder.sslEnabled(true);
            builder.sslContext(sslContext);
        } catch (Exception e) {
            logger.error("TLS initialization failed: ", e.getCause());
        }
    }
    return builder.build();
}

---

演示如何将

MongoClient（）

与参数一起使用。是否需要自己解析该服务器地址？MongoClient不适用于MongoClient吗？从日志中可以看出，您正在创建两个MongoClient实例，一个到远程主机（使用您显示的代码），另一个到其他地方。从

MongoClient

类文档：“/database是要登录的数据库的名称，因此只有在使用username:password@语法时才相关。如果未指定，默认情况下将使用“admin”数据库。“。假设用户/pwd已通过管理员数据库的身份验证。如果我想添加MongoClient，我不能仅使用MongoClient。没有其他代码可以让我创建第二个实例。用户根据管理数据库进行身份验证。所需的连接按预期工作，但我不知道为什么驱动程序尝试连接到localhost。向我们展示如何使用带有参数的

MongoClient（）

。您需要自己解析该服务器地址吗？MongoClient不适用于MongoClient吗？从日志中可以看出，您正在创建两个MongoClient实例，一个到远程主机（使用您显示的代码），另一个到其他地方。从

MongoClient

类文档：“/database是要登录的数据库的名称，因此只有在使用username:password@语法时才相关。如果未指定，默认情况下将使用“admin”数据库。“。假设用户/pwd已通过管理员数据库的身份验证。如果我想添加MongoClient，我不能仅使用MongoClient。没有其他代码可以让我创建第二个实例。用户根据管理数据库进行身份验证。想要的连接按预期工作，但我不知道为什么驱动程序尝试连接到localhost。