class xxx{
    private static String port = "1433";
    private static String ip = "192.168.2.163";
    //mysql : jdbc:mysql://
    //sqlserver : jdbc:sqlserver//  或者   jdbc:microsoft:sqlserver://
    private static String driverType = "jdbc:sqlserver://";
    private static String DatabaseName = "test";
    private
 
 static String username = "sa";
    private static String password = "123456";
    //sqlerver資料庫 com.microsoft.sqlserver.jdbc.SQLServerDriver驅動
    //mysql 資料庫 com.mysql.jdbc.Driver 驅動
    private static String Drivermanager = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
    //取得本地儲存的自定義標識
    private static
 
 Map<String,String> localMap = new HashMap<>();
    //接收到資料庫返回的自定義標識
    private static Map<String,Member> databaseMap = new HashMap<>();
    //本地儲存拼接標識檔案
    private static String FileSavePath = "E:/check/ckeckMemberInfoforJZ/member001.data";
    private static String catchMemberSql = "select * from memberUpdate";
    
 
private static String catchCardNotSql = "";//獲取資料庫連線，執行目的語句
    private static ResultSet getJdbcConnet(String directSql){
        Connection connection;
        Statement statement;
        ResultSet resultSet = null;
        //拼接成穩定的URL
        try {
        String basicUrl = driverType+ip+":"+port+";DatabaseName="+DatabaseName;
            Class.forName(Drivermanager).newInstance();
            connection = DriverManager.getConnection( basicUrl,
                    username, password);
            System.out.println("jdbc connect success");
            statement = connection.createStatement();
        }catch (ClassNotFoundException e){
            e.printStackTrace();
        }catch (SQLException e){
            e.printStackTrace();
        }catch (IllegalAccessException e){
            e.printStackTrace();
        }catch (InstantiationException e){
            e.printStackTrace();
        }
            return resultSet;
    }

特別說明url:

1:sqlserver

      jdbc:sqlserver://192.168.2.163:1433;DatabaseName=test

2:mysql

      jdbc:mysql://localhost:3306/databasename?useUnicode=true&characterEncoding=utf8

拼接url時需注意。