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();
				}
			}
		}
	}
}