当前位置: 首页 > 图文教程 > 网络编程 > ASP > javascript asp教程添加和修改

ASP
ASP漏洞集-跨站Script攻击和防范
利用JSP的思想来做ASP
asp的19个基本技巧
自定义aspnet_client的位置
编码的风格和如何设置调试代码
RS.GETROWS使用详解
Adodb.Stream 组件的使用说明
在ASP.Net中实现RSA加密
关于水晶报表10 的字报表数据填充和显示
DataList里套DataGrid,DataBind
ASP.NET验证控件详解
ASP网站漏洞解析及黑客入侵防范方法
产生一个密码,并记录到数据库,然后发送给用户
ASP内置对象 Request对象 详解
ASP 中 DateDiff 函数详解
几个常用的小函数
在记录集中加入判断使之灵活
会员系统“找回密码”的制作方法
一个分页代码例子
常见的错误及其解决方法

ASP 中的 javascript asp教程添加和修改


出处:互联网   整理: 软晨网(RuanChen.com)   发布: 2009-09-13   浏览: 195 ::
收藏到网摘: n/a

The Connection Execute():

If you want to retrieve data from a database then you have no choice but to use a Recordset. However, for the purposes of adding, updating, and deleting data you don't necessarily have to have a Recordset. It's up to you.

For the purposes of adding, updating and deleting you can avoid the Recordset by using the Execute() method.

Get Started:

Below is the script for Lesson 19.

<%@LANGUAGE="JavaScript"%>
var strConnect="Provider=Microsoft.Jet.OLEDB.4.0; Data Source="
strConnect += Server.MapPath("\\GOP") + "\\datastores\\gop.mdb;"
<!-- METADATA TYPE="typelib"
FILE="C:\Program Files\Common Files\System\ado\msado15.dll" -->
<HTML>
<HEAD>
<TITLE>Administrator Page - Changing the Mailing List</TITLE>
</HEAD>
<BODY LINK="red" VLINK="red" ALINK="crimson">
<H2>Administrator Page</H2>
<H3>Changing a the Mailing List</H3>
<%
if (Request.Form("Delete") > "")	{	var sql="DELETE FROM Address WHERE ID = " + Request.Form("ID") + ";"	}
else	{	var firstName = new String(Request.Form("firstName"))	var lastName = new String(Request.Form("lastName"))	var Address = new String(Request.Form("Address"))	var City = new String(Request.Form("City"))	var myRegExp = /[']/g;	firstName = firstName.replace(myRegExp, ''');	lastName = lastName.replace(myRegExp, ''');	Address = Address.replace(myRegExp, ''');	City = City.replace(myRegExp, ''');	var sql="UPDATE Address SET firstName= '" + firstName + "' , lastName='"	sql += lastName + "' , Address='" + Address + "' , City='"	sql += City + "' , State='" + Request.Form("State") + "' , Zip='"	sql += Request.Form("Zip") + "' WHERE ID = " + Request.Form("ID") + ";"	}
var objConn=Server.CreateObject("ADODB.Connection");
objConn.Open(strConnect)
objConn.Execute(sql)
objConn.Close()
objConn = null;
Response.Write("The member has been updated in the database.")
Response.Write("<A HREF=\"../files/committee.asp\">")
Response.Write("Click here to see it.</A>")
%>

There's no link to see this one in action. I did that for security reasons. I just want to point out a few highlights.

Danger in The Single Quote:

You'll notice that I replace single quote marks with the HTML encoded equivalent. I did that using the following code.

var myRegExp = /[']/g;
firstName = firstName.replace(myRegExp, ''');

The single quote is the only character you cannot input into a database using an ASP application. Everything else is fair game. DO NOT accept any text from users into your database without replacing all single quotes. To use an analogy, the single quote is like a key that opens up your entire database. Hackers will tear your application to shreds if you let someone input single quotes.

Execute( ):

The only other thing I want to spend any time with is objConn.Execute(sql). The variable sql takes on one of two definitions depending on the result of an "if" statement. In this case sql does all the work, and we never need a recordset.