JDBC连接类，jdbc连接,import java.

JDBC连接类，jdbc连接,import java.

import java.sql.Connection;import java.sql.DriverManager;import java.sql.PreparedStatement;import java.sql.SQLException;public class DBUtils {    public static final String url = "jdbc:mysql://127.0.0.1/lvyun";      public static final String name = "com.mysql.jdbc.Driver";      public static final String user = "root";      public static final String password = "root";    //开启连接    public static Connection creatConnection(){        Connection conn = null;        try {            Class.forName(name);            conn = DriverManager.getConnection(url, user, password);        } catch (ClassNotFoundException e) {            e.printStackTrace();        } catch (SQLException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }        return conn;    }    //执行语句    public PreparedStatement getps(Connection conn,String sql){        PreparedStatement ps = null;        try {            ps = conn.prepareStatement(sql);        } catch (SQLException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }        return ps;    }     //关闭Connection    public static void close(Connection conn) {          if(conn!=null){            try {                conn.close();            } catch (SQLException e) {                e.printStackTrace();            }        }    }      //关闭PreparedStatement    public static void close(PreparedStatement ps) {          if(ps!=null){            try {                ps.close();            } catch (SQLException e) {                e.printStackTrace();            }        }    }  }