public class JdbcTest {
    public static void main(String[] args) {
          String dbURL = "jdbc:sqlserver://127.0.0.1:1433; DatabaseName=數據庫名";    // 連接字符串
          String userName = "sa";    String userPwd = "123456";
          try {
                 Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");  //驅動
                 Connection dbConn 
 
= DriverManager.getConnection(dbURL, userName, userPwd);
                 System.out.println("連接數據庫成功");
          } catch (ClassNotFoundException | SQLException e) {
              e.printStackTrace();
              System.out.print("連接失敗");
          } 
        }

}

SQLServer如上。

MySQL如下：

public class JdbcTest {
    public static void main(String[] args) {
          String dbURL = "jdbc:mysql://localhost:3306/數據庫名";    // 連接字符串
          String userName = "sa";    String userPwd = "123456";
          try {
                 Class.forName("com.mysql.jdbc.Driver");   //驅動
                 Connection dbConn = DriverManager.getConnection(dbURL, userName, userPwd);
                 System.out.println(
 
"連接數據庫成功");
          } catch (ClassNotFoundException | SQLException e) {
              e.printStackTrace();
              System.out.print("連接失敗");
          } 
        }

}

【MySQL】SQLServer、MySQL中JDBC驅動和連接字符串