jdbc.url=jdbc:mysql://192.168.1.101:3306/testdb?autoReconnect=true&zeroDateTimeBehavior=convertToNull
jdbc.username=root
jdbc.password=leizhimin

package lavasoft.common; 

import org.apache.commons.logging.Log; 
import org.apache.commons.logging.LogFactory; 

import java.io.IOException; 
import java.sql.*; 
import java.util.List; 
import java.util.Properties; 

/** 
* JDBC工具类 
* 
* @author leizhimin 2009-11-24 9:28:03 
*/ 
public class DBToolkit { 
        private static final Log log = LogFactory.getLog(DBToolkit.class); 
        private static String url = null; 
        private static String username = null; 
        private static String password = null; 
        private static Properties props = new Properties(); 

        static { 
                try { 
                        props.load(DBToolkit.class.getResourceAsStream("/jdbc.properties")); 
                } catch (IOException e) { 
                        log.error("#ERROR# :系统加载sysconfig.properties配置文件异常，请检查！", e); 
                } 
                url = (props.getProperty("jdbc.url")); 
                username = (props.getProperty("jdbc.username")); 
                password = (props.getProperty("jdbc.password")); 
                //注册驱动类 
                try { 
                        Class.forName("com.mysql.jdbc.Driver"); 
                } catch (ClassNotFoundException e) { 
                        log.error("#ERROR# :加载数据库驱动异常，请检查！", e); 
                } 
        } 

        /** 
         * 创建一个数据库连接 
         * 
         * @return 一个数据库连接 
         */ 
        public static Connection getConnection() { 
                Connection conn = null; 
                //创建数据库连接 
                try { 
                        conn = DriverManager.getConnection(url, username, password); 
                } catch (SQLException e) { 
                        log.error("#ERROR# :创建数据库连接发生异常，请检查！", e); 
                } 
                return conn; 
        } 

        /** 
         * 在一个数据库连接上执行一个静态SQL语句查询 
         * 
         * @param conn            数据库连接 
         * @param staticSql 静态SQL语句字符串 
         * @return 返回查询结果集ResultSet对象 
         */ 
        public static ResultSet executeQuery(Connection conn, String staticSql) { 
                ResultSet rs = null; 
                try { 
                        //创建执行SQL的对象 
                        Statement stmt = conn.createStatement(); 
                        //执行SQL，并获取返回结果 
                        rs = stmt.executeQuery(staticSql); 
                } catch (SQLException e) { 
                        log.error("#ERROR# :执行SQL语句出错，请检查！\n" + staticSql, e); 
                } 
                return rs; 
        } 

        /** 
         * 在一个数据库连接上执行一个静态SQL语句 
         * 
         * @param conn            数据库连接 
         * @param staticSql 静态SQL语句字符串 
         */ 
        public static void executeSQL(Connection conn, String staticSql) { 
                try { 
                        //创建执行SQL的对象 
                        Statement stmt = conn.createStatement(); 
                        //执行SQL，并获取返回结果 
                        stmt.execute(staticSql); 
                } catch (SQLException e) { 
                        log.error("#ERROR# :