Java has a jar Connection database sqlhelper Configuration

First drag the jar package to webroot-> WEB-INF-> Lib.
In this way, the referenced libraries folder also contains the relevant jar package.

Open dB brower

Create, taking sqlserner2005 as an Example
JDBC: sqlserver: // rewrite in <SERVER_NAME >:< port> [; databasename = <dbname>]
For example, JDBC: sqlserver: // 10.187.202.145: 1433; databasename = News)

SERVER_NAME is the IP address, port is the port number, and <dbname> is the database name

Then modify the sqlhelper. Java file.

Private string drivername = "com. Microsoft. sqlserver. JDBC. sqlserverdriver ";

Private string url = "JDBC: sqlserver: // 10.187.202.145: 1433; databasename = News ";

Private string username = "sa ";

Private string userpassword = "hicc ";

Here, drivername can be automatically generated. Create another project and add hibernate
When the DB driver is set to a new one, the drivername is automatically generated.
In this way, you can use sqlhelper.