从Java连接SQL Server数据库

Question

I need to Connect the SQL Server 2008 from the Java.

Here is my code:

public class Sql {
    Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");


         public static void main(String[] args){
                // Neue DB und los geht's :)
                DB db = new DB();
                db.dbConnect("jdbc:sqlserver://Data Source=500.20.13.1;InitialCatalog=LicenceManagement;UseID=XXXXX;Password=YYYY");
            }
    }

    class DB{

        public void dbConnect(  String db_connect_string, 
                                String db_userid, 
                                String db_password){
            try{
            Class.forName( "com.microsoft.sqlserver.jdbc.SQLServerDriver" );
                Connection conn = DriverManager.getConnection(
                                db_connect_string, 
                            db_userid, 
                            db_password);
                System.out.println( "connected" );
            }
            catch( Exception e ){
                e.printStackTrace();
            }
        }
    };

But the connection isn't established, and I get the following error:

ERR :No suitable driver found for jdbc:sqlserver://Data Source=500.20.13.1;InitialCatalog=LicenceManagement;UseID=XXXXX;Password=YYYY"

Answer 1

Have a look here for jdbc Driver for MSSQL:

https://docs.microsoft.com/en-us/sql/connect/jdbc/microsoft-jdbc-driver-for-sql-server?view=sql-server-2017

Answer 2

first of all you have to find a driver like @Benedikt Geltenpoth said above (or below).

Secondly include your driver in your classpath, after you've download it.

Third From Java 1.6 upward, you dont need to register the driver class anymore see (in theorie) here . the driver is JDBC type 4

Lastly A simple pattern for your connection would be jdbc:sqlserver://server:port;DatabaseName=dbname plus your url parameters

    public class Sql {

             public static void main(String[] args){
                    // Neue DB und los geht's :)
                    DB db = new DB();
                    int yourPort = 1433;
                    String initialCatalog = "LicenceManagement";
                    String userId = "userOne";
                    String password= "passwordOne";
db.dbConnect("jdbc:sqlserver://"+500.20.13.1+":"+yourPort+";DatabaseName="+initialCatalog,userId,password);
                }
        }

        class DB{

            public void dbConnect(  String db_connect_string, 
                                    String db_userid, 
                                    String db_password){
                try{
                    Connection conn = DriverManager.getConnection(
                                    db_connect_string, 
                                db_userid, 
                                db_password);
                    System.out.println( "connected" );
                }
                catch( SQLException e ){
                    e.printStackTrace();
                }
            }
        };