JDBC for MySql5.5 简单示例

package com.anllin.mysqltest;

import java.sql.*;

public class MysqlTest
{
    public static void main(String[] args)
    {
        connetMysqlTest();
    }

    public static void connetMysqlTest()
    {
        String connectionUrl = "jdbc:mysql://localhost:3306/mydata?user=root&password=123" ;

        Connection conn = null ;
        Statement stmt = null ;
        ResultSet rs = null ;

        try
        {
            Class.forName( "com.mysql.jdbc.Driver" );
            conn = DriverManager.getConnection(connectionUrl);
            conn.setAutoCommit( false );
            stmt = conn.createStatement();
            rs = stmt.executeQuery( "select * from dept" );
            conn.commit();
            System.out.print( "deptno" + " " );
            System.out.print( "dname" + " " );
            System.out.println( "loc" );
            while (rs.next())
            {
                System.out.print(rs.getInt( "deptno" ) + "      " );
                System.out.print(rs.getString( "dname" ) + "      " );
                System.out.println(rs.getString( "loc" ));
            }
        }
        catch (Exception e)
        {
            if ( null != conn)
            {
                try
                {
                    conn.rollback();
                }
                catch (SQLException e1)
                {
                    e1.printStackTrace();
                }
            }
            e.printStackTrace();
        }
        finally
        {
            if ( null != rs)
            {
                try
                {
                    rs.close();
                    rs = null ;
                }
                catch (Exception e2)
                {
                    e2.printStackTrace();
                }
            }

            if ( null != stmt)
            {
                try
                {
                    stmt.close();
                    stmt = null ;
                }
                catch (Exception e2)
                {
                    e2.printStackTrace();
                }
            }

            if ( null != conn)
            {
                try
                {
                    conn.close();
                    conn = null ;
                }
                catch (Exception e2)
                {
                    e2.printStackTrace();
                }
            }
        }
    }
}