MySql连接数据库

import java.sql.*;

public class TestMysqlConnection {

    public static void main(String[] args) {
        Connection conn = null;
        Statement stmt = null;
        ResultSet rs = null;

        try {

            Class.forName("com.mysql.jdbc.Driver");
            conn = DriverManager.getConnection("jdbc:mysql://localhost/mydata?"
                    + "user=root&password=105148802");

            stmt = conn.createStatement();
            rs = stmt.executeQuery("select * from dept ");
            while (rs.next()) {
                System.out.println(rs.getString("deptno"));
            }
        } catch (ClassNotFoundException e) {
            e.printStackTrace();

        }

        catch (SQLException ex) {
            // handle any errors
            System.out.println("SQLException: " + ex.getMessage());
            System.out.println("SQLState: " + ex.getSQLState());
            System.out.println("VendorError: " + ex.getErrorCode());
        } finally {
            try {
                if (rs != null) {
                    rs.close();
                    rs = null;
                }
                if (stmt != null) {
                    stmt.close();
                    stmt = null;
                }
                if (conn != null) {
                    conn.close();
                    conn = null;
                }

            } catch (SQLException e) {
                e.printStackTrace();
            }
        }

    }

}