JDBC封装工具类

package com.lxf.bean.db;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

/**
 * 数据库连接类
 * 
 * @author 刘向峰
 * 
 */
public class DbConnection {

    //oracle连接写法
    private static String diver = "oracle.jdbc.driver.OracleDriver";
    private static String url = "jdbc:oracle:thin:@localhost:1521:orcl";
    private static String username = "lxf";
    private static String password = "lxf";

    static {
        try {
            //加载驱动
            Class.forName(diver);
        } catch (ClassNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    /**
     * 获取连接
     * 
     * @return connection
     */
    public static Connection getConn() {
        Connection conn = null;
        try {
            conn = DriverManager.getConnection(url, username, password);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return conn;
    }

    /**
     * 关闭资源
     * 
     * @param connection
     * @param statement
     * @param resultSet
     */
    public static void close(Connection connection, Statement statement,
            ResultSet resultSet) {
        try {
            if (connection != null) {
                connection.close();
                connection = null;
            }
            if (statement != null) {
                statement.close();
                statement = null;
            }
            if (resultSet != null) {
                resultSet.close();
                resultSet = null;
            }
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}