how to connect to mongodb from java

Background: Because the Linux server used for development is in a relatively closed environment, only port 22 is accessed through SSH. Therefore, putty is used to create an SSH forwarding, which maps the port 27018 of the local machine to the remote port 27017. Mongo localhost: 27018 is successfully connected in cmd and operations are performed. Symptom: In the program Mongo mongo =NewMongo ("Localhost",27018); When connecting to MongoDB on a remote

be resolved as such. It's pretty detailed.http://lingqi1818.iteye.com/blog/1317433However, if these items are not linked, it means that some of the ports on the server are not open causing the connection to be non-connected.Workaround first Configure the IP table to open some ports, and then restart server.Root enters serverVi/etc/sysconfig/iptablesAdd to-A input-m state--state new-m tcp-p TCP--dport 10002-j ACCEPT (the port opened here is 10002)Save exitService Iptables RestartTry the code aga

reasons can be solved. It's pretty specific.http://lingqi1818.iteye.com/blog/1317433But assuming that these things are not linked, it means that some ports on the server are not open and cannot be connected.Workaround to first configure the IP table to open some ports, and then restart server.Root enters serverVi/etc/sysconfig/iptablesJoin-A input-m state--state new-m tcp-p TCP--dport 10002-j ACCEPT (the port opened here is 10002)Save exitService Iptables RestartTry the code again, get it done!

(Updateoldsql,updatenewonesql); //update more than one dataBasicdbobject Updatenewmanysql =NewBasicdbobject ("$set",NewBasicdbobject ("Name", "name1"). Append ("Age", 66));//Modify multiple fieldsCollection.updatemany (Updateoldsql, updatenewmanysql);6.query // Querying Data New Basicdbobject ("Name", "name1"); Finditerable// Here you can do sort and filter operations mongocursor Queryrst.iterator (); while (Cursor.hasnext ()) { System.out.println

Background information: Because the Linux server used for development is in a relatively closed environment, only 22 ports are accessed via SSH. So I used putty to do an SSH forwarding to map the 27018 port of this machine to the remote 27017 port. Successfully connected via MONGO localhost:27018 in CMD and operated. Phenomenon: In the program through the Mongo Mongo = new Mongo ("localhost", 27018);MongoDB on a remote server, the following error occ

Python is used to connect to mongodb, and python is used to connect to mongodb. This article describes how to connect to mongodb using python. Share it with you for your reference. The specific analysis is as follows: Through py

The Windows platform uses a MongoDB shell to connect to a MONGODB server and create a database command line into the bin directory of MongoDB run Mongod.exe mongod --dbpath c:\data\dbOr find the bin directory of MongoDB and double-click Run Mongod.exe. To outpu

Use nodejs mongodb to connect to mongodb's shard distribution service, nodejsmongodb 1. For more information about connecting to a single mongodb instance, see the node mongodb documentation. Https://github.com/mongodb/node-mongodb