使用JDBC连接到具有防火墙的SQL数据库

Question

I'm currently doing some testing and I want automate some queries of a database. Currently the server I want to connect to has a firewall blocking it so I'm a little confused on how I should set my JDBC and MYSQL Workbench set up. I'm wondering can anyone give me some advice on what I should be trying to do to successfully connect to the remote DB.

Answer 1

JDBC has nothing to do with firewalls or other network related structure. In order to connect properly to the database server, the current computer trying to connect should have access and enough privileges to the database server. Talk to system administrator or other personal in charge of solving this networking issue.

Answer 2

First of all, have you attempted connecting to the SQL database? If so, do you get an error like

SQLServerException: The TCP/IP connection to the host localhost, port (number) has failed. Error: "Connection refused: connect. Verify the connection properties. Make sure that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port. Make sure that TCP connections to the port are not blocked by a firewall.

Do you control the server, or have contact with the people who control the server? I had the same problem as you and fixed it by going to the server firewall settings and allowing <port-number> thru the firewall, then set my JDBC connection string as

 Server=myServerAddress;Port=<port-number>;Database=myDataBase;Uid=myUsername;Pwd=myPassword;

I use SQL Server, not MySQL, but i think it's a matter of ports, and not your database management system.