mysql：Java通过驱动包（jar包）连接MySQL数据库---步骤总结及验证

 package sqldstudent;
 import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
 public class main {
     public static void main(String[] args) {
         //声明Connection对象
         Connection con;
         //驱动程序名
         String driver = "com.mysql.jdbc.Driver";
         //URL指向要访问的数据库名mydata
         String url = "jdbc:mysql://localhost:3306/mysql";
         //MySQL配置时的用户名
         String user = "root";
         //MySQL配置时的密码
         String password = "****";
         //遍历查询结果集
         try {
             //加载驱动程序
             Class.forName(driver);            
             //1.getConnection()方法，连接MySQL数据库！！
             con = DriverManager.getConnection(url,user,password);
             if(!con.isClosed())
                 System.out.println("Succeeded connecting to the Database!");
             //2.创建statement类对象，用来执行SQL语句！！
             Statement statement = con.createStatement();
             //要执行的SQL语句
             String sql = "select * from student";
             //3.ResultSet类，用来存放获取的结果集！！
             ResultSet rs = statement.executeQuery(sql);
             System.out.println("--------------------------------------");
             System.out.println("执行结果如下所示:");  
             System.out.println("------------------------");  
             System.out.println("学号" + "\t" + "姓名" + "\t" + "性别" + "\t" + "年龄");  
             System.out.println("--------------------------------------");  
             String name= null;
             String id = null;
             String sex = null;
             String age = null;
             while(rs.next()){
               //获取sno这列数据
                 id = rs.getString("sno");
                 //获取sname这列数据
                 name = rs.getString("sname");
                 //获取sex这列数据
                 sex = rs.getString("sex");
                 //获取age这列数据
                 age = rs.getString("age");
                 //输出结果
                 System.out.println(id + "\t" + name + "\t" + sex + "\t" + age);
             }
             rs.close();
             con.close();
         } catch(ClassNotFoundException e) {   
             //数据库驱动类异常处理
             System.out.println("Sorry,can`t find the Driver!");   
             e.printStackTrace();   
             } catch(SQLException e) {
             //数据库连接失败异常处理
             e.printStackTrace();  
             }catch (Exception e) {
             // TODO: handle exception
             e.printStackTrace();
         }
         finally{
             System.out.println("数据库数据成功获取！！");
         }
     }
 }