java连接带密码的mongodb集群

当mongodb增加了密码登录验证之后，原来使用的java连接mongo的方式需要进行改变，主要是增加用户和密码的属性到连接里。

    List<ServerAddress> addresses = null;        
    MongoCredential credential = MongoCredential.createCredential(dbUser, dbName, dbPwd.toCharArray());  
    MongoClientOptions options = builder.build();
    client = new MongoClient(addresses, Arrays.asList(credential),options);
    DB = client.getDB(dbName);

 其中关键的是new MongoClient（）这个构造函数，里面的参数可以根据需求进行设定，如：

1.MongoClient(String host, MongoClientOptions options)
2.MongoClient(String host, int port)
3.MongoClient(ServerAddress addr)
4.MongoClient(ServerAddress addr, List<MongoCredential> credentialsList)
5.MongoClient(ServerAddress addr, MongoClientOptions options)
6.MongoClient(ServerAddress addr, List<MongoCredential> credentialsList, MongoClientOptions options)
7.MongoClient(List<ServerAddress> seeds)
8.MongoClient(List<ServerAddress> seeds, List<MongoCredential> credentialsList)
9.MongoClient(List<ServerAddress> seeds, MongoClientOptions options)
10.MongoClient(List<ServerAddress> seeds, List<MongoCredential> credentialsList, MongoClientOptions options)
11.MongoClient(MongoClientURI uri)

 可以根据具体的参数来创建对应的mongoClient。