daohelper.java~13~

来自「简单的信息录入系统 大家可以在这个基础上将其完善 是对初学者的有力帮助」· JAVA~13~ 代码 · 共 42 行

package mvcdemo;
import java.sql.*;
public class DAOHelper {
    public DAOHelper() {
    }
    public Connection getConn(){
        Connection con = null;
        try {
            Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
            con = DriverManager.getConnection(
                    "jdbc:microsoft:sqlserver://127.0.0.1;DatabaseName=student",
                    "sa", "");
        } catch (SQLException ex) {
            ex.printStackTrace();
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        }
        return con;
    }
    public int nonQuery(String strSQL){
        int result = 0;
        Connection con = null;
        PreparedStatement pst = null;
        try {
            con = getConn();
            pst = con.prepareStatement(strSQL);
            pst.executeUpdate();
        } catch (SQLException ex) {
            ex.printStackTrace();
        }finally{
            if(pst!=null){
                pst.close();
                pst = null;
            }
            if(con != null){
                con.close();
                con = null;
            }
        }
    }
}