How to get sqlserver database name from datasource name in Java

问题

As specified in the title, I want to get the database name in sqlserver, all info I know is datasource name, login name/password to get the Connection object, please show some pointers on how to retrieve the database name correctly, in java, thanks!

Even

回答1:

Obtain an instance of java.sql.DatabaseMetaData from the connection object.

The names of database can be obtained via getCatalogs() or getSchemas() method (It depends upon the vendor of JDBC driver).

ResultSet rs=cn.getMetaData().getSchemas();
while(rs.next()) {
   System.out.println(rs.getString(1));
}

Or use Connection.getCatalog() or Connection.getSchema() method.

In case if you are interested to get host name or ip address of the Oracle database server.

 ResultSet rs=st.executeQuery("select UTL_INADDR.GET_HOST_NAME from dual");
 while(rs.next())
    System.out.println(rs.getString(1));

回答2:

public List<String> getServerDataBaseNameList() {
    List<String> dataBaseNameList = new ArrayList<String>();
    try {
        ResultSet resultSet = con.getConnectionMetaData().getCatalogs();
        if (resultSet == null) {
            return null;
        }
        while (resultSet.next()) {
            dataBaseNameList.add(resultSet.getString(1));
        }
        return dataBaseNameList;
    } catch (SQLException e) {
        logger.error("Error during execute select query for fetch server database name");
    }
    return null;
}

来源：https://stackoverflow.com/questions/7116517/how-to-get-sqlserver-database-name-from-datasource-name-in-java