连接Oracle数据库帮助类

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

import oracle.jdbc.driver.OracleDriver;

/**
 * 数据库连接帮助类
 * @author zql_pc
 *
 */
public class DbHelp {

    /*
     * 数据库连接
     */
    public static Connection lianjie(){
        
        //数据库配置
        String driver = "oracle.jdbc.driver.OracleDriver";//驱动
        String url = "jdbc:oracle:thin:@localhost:1521:JBITDB";
        String user = "epet";
        String pwd = "123456";
        
        try {
            //第一步：加载驱动
            Class.forName(driver);// -->反射
            
            Connection conn = DriverManager.getConnection(url,user,pwd);
            
            return conn;
            
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }
          return null;
 }
}