一個jdbc的例子（包含sql語句的批處理，事務處理，數據綁定prepare）

package com.chinacountry.databases;
import Java.sql.*;
import Java.util.StringTokenizer;
public class connDB
{
    String sDBDriver = "org.gjt.mm.MySQL.Driver";
    String sConnStr = "jdbc:MySQL://10.100.27.13:3306/db1";
    Connection cn = null;
    Statement stmt;
    boolean autoCommit;
    private String DbType="MySQL";
    //private String DbType="Oracle";
    private connDB()
    {
       init();
    }
    private void init()
    {
        try
        {
            Class.forName(sDBDriver).newInstance();
            cn = DriverManager.getConnection(sConnStr,"naxweb","naxweb");

        }
        catch(Exception e)
        {
            System.err.println("conndb(): " + e.getMessage());
        }
    }
    public static connDB getNewInstance()
    {
        return new connDB();
    }
    //數據綁定的資料好像很少，有空給大家一個例子。在這裡只能返回PreparedStatement。
    public PreparedStatement getPreparedStmt(String sql) throws SQLException
    {
        PreparedStatement preStmt=null;
        try
        {
      &nbs