import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;
import org.apache.log4j.Logger;
public class DBConnection {
    /**
     * @param path
     * @return Connection
     * wgy
     */
    public static Connection getConn(String classDriver, String url,
            String user, String pwd) {
        try {
            Class.forName(classDriver);
            return DriverManager.getConnection(url, user, pwd);
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        } catch (SQLException ex) {
            ex.printStackTrace();
        }
        return null;
    }
    public static Connection getConn(DataSource dataSource) {
        try {
            return dataSource.getConnection();
        } catch (SQLException ex) {
            ex.printStackTrace();
        }
        return null;
    }
    public static Connection getConn(String jndiName) {
        try {
            Context ctx;
            ctx = new InitialContext();
            DataSource dataSource = (DataSource) ctx.lookup("java:comp/env/"
                    + jndiName);
            return dataSource.getConnection();
        } catch (NamingException ex) {
            ex.printStackTrace();
        } catch (SQLException ex) {
            ex.printStackTrace();
        }
        return null;
    }
    public static Connection getConn(Properties properties) {
        try {
            String driver = properties.getProperty("jdbc.driverClassName");
            String url = properties.getProperty("jdbc.url");
            String user = properties.getProperty("jdbc.username");
            String password = properties.getProperty("jdbc.password");
            Class.forName(driver);
            return DriverManager.getConnection(url, user, password);
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        } catch (SQLException ex) {
            ex.printStackTrace();
        }
        return null;
    }
    /**
     * oracle
     *
     * @param path
     * @return Connection
     */
    public static Connection getOracleConn(String url, String user, String pwd) {
        try {
            Class.forName("oracle.jdbc.driver.OracleDriver");
            return DriverManager.getConnection(url, user, pwd);
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        } catch (SQLException ex) {
            ex.printStackTrace();
        }
        return null;
    }
    /**
     * mysql
     *
     * @param path
     * @return Connection
     */
    public static Connection getMysqlConn(String url, String user, String pwd) {
        try {
            Class.forName("com.mysql.jdbc.Driver");
            return DriverManager.getConnection(url, user, pwd);
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        } catch (SQLException ex) {
            ex.printStackTrace();
        }
        return null;
    }
    /**
     * Access����
     *
     * @param path
     * @return Connection
     */
    public static Connection getAccessConn(String path) {
        try {
            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
            String url = "jdbc:odbc:Driver={MicroSoft Access Driver (*.mdb)};DBQ="
                    + path;
            return DriverManager.getConnection(url, "", "");
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        } catch (SQLException ex) {
            ex.printStackTrace();
        }
        return null;
    }
    public static void close(Object... objects) {
        try {
            for (Object object : objects) {
                if (object != null) {
                       
                    if (object instanceof ResultSet) {
                        ResultSet rs = (ResultSet) object;
                        rs.close();
                        log.info("ResultSet close");
                    } else if (object instanceof Statement) {
                        Statement stmt = (Statement) object;
                        stmt.close();
                        log.info("Statement close");
                    } else if (object instanceof Connection) {
                        Connection conn = (Connection) object;
                        conn.close();
                        log.info("Connection close");
                    }
                }
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
       
    private static Logger log = Logger.getRootLogger();
}