我正在尝试连接到远程的mongodb实例，但它一直抛出错误。
Java代码:
Mongo mongo = new Mongo("172.234.52.24");
DB db = mongo.getDB("myDB");
collection = db.getCollection("myCollection");
java.io.IOException: couldn't connect to [/172.234.52.24:27017] bc:java.net.ConnectException: Connection refused
我需要做其他事情吗？当我尝试访问数据库或在mongo侧更改某些权限时设置用户名/密码？这只是在ubuntu服务器上正常安装的mongo，没有添加任何配置或权限。
附加信息： mongo 172.234.52.24：8888也不起作用，显示异常：连接失败。我可以ping到另一个主机，并知道mongo正在运行。
有任何想法吗？ 谢谢！
String database = "TestDev";
String username = "user@test.COM";
String pass = "XXXXX";
char[] password = pass.toCharArray();
try {
List<ServerAddress> serverAddresses = new ArrayList<ServerAddress>();
ServerAddress address = new ServerAddress("hostname", portnumber);
serverAddresses.add(address);
List<MongoCredential> credentials = new ArrayList<MongoCredential>();
MongoCredential credential = MongoCredential.createPlainCredential(username, "$external", password);
credentials.add(credential);
MongoClient mongoClient1 = new MongoClient(serverAddresses, credentials);
DB db = mongoClient1.getDB(database);
System.out.println(db.getCollectionNames());
System.out.println("Done");
} catch (UnknownHostException e) {
e.printStackTrace();
}
使用Java Web应用程序连接到远程MongoDB数据库。以下代码肯定会对您有所帮助。
在使用下面的代码之前，请添加一个包含凭据和其他必需细节的属性文件。在spring-config.xml文件中读取该属性文件。您可以使用以下代码来读取属性文件 -
<context:property-placeholder location='classpath:/config/configTest.properties'/>
@配置 public class MongoConfiguration extends AbstractMongoConfiguration{
@Value("${mongodb.dbname}")
private String dbName;
@Value("${mongodb.host}")
private String host;
@Value("${mongodb.port}")
private Integer port;
@Value("${mongodb.username}")
private String userName;
@Value("${mongodb.password}")
private String password;
@Value("${mongodb.authenticationdatabase}")
private String authenticationDatabase;
@Override
protected String getDatabaseName() {
return this.dbName;
}
@Override
public MongoClient mongo() throws Exception {
List<ServerAddress> serverAddresses = new ArrayList<ServerAddress>();
ServerAddress address = new ServerAddress(host, port);
serverAddresses.add(address);
List<MongoCredential> credentials = new ArrayList<MongoCredential>();
MongoCredential credential = MongoCredential.createPlainCredential(userName, authenticationDatabase, password.toCharArray());
credentials.add(credential);
return new MongoClient(serverAddresses, credentials);
}
@Override
@Bean
public SimpleMongoDbFactory mongoDbFactory() throws Exception {
return new SimpleMongoDbFactory(mongo(), getDatabaseName());
}
@Override
@Bean
public MongoTemplate mongoTemplate() throws Exception {
final MongoTemplate mongoTemplate = new MongoTemplate(mongo(), getDatabaseName());
mongoTemplate.setWriteConcern(WriteConcern.SAFE);
return mongoTemplate;
}
private static final String DB_NAME = "yourDbName";
MongoClient mongo = new MongoClient();
DB db = mongo.getDB(DB_NAME);
collection = db.getCollection("myCollection");
数据库名称由驱动程序使用；连接字符串（172.234.52.24:27017）由客户端在查看数据时使用（MongoVue或MongoExplorer）。此外，请坚持使用端口27017。
编辑：我正在使用Java的MongoDriver进行连接。
172.234.52.24:8888？8888不是默认端口。请参考 http://docs.mongodb.org/manual/tutorial/configure-linux-iptables-firewall/ 配置 Linux iptables 防火墙。 - WiredPrairie