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
介绍一下GETROWS的用法
一个在vbscript中读取cookie的程序函数
用err.raise自定义错误信息
一段返回随机记录的代码
基于ACCESS数据库的纯asp论坛制作心得
不用Golobal.asa和session实现在线人数统计
在ASP里建表
结束ADOVB.INC的办法
存储过程分页
友情连接浏览器
怎样使用ASP实现Ping
用ASP读取Windows标准INI格式文件
使用ActiveX控件开发网页常见的问题
两个获取http页面的c#函数
将html源代码规范化,转换成XSL代码的asp工具
已调试好的asp程序在VB中转换为组件的技巧
关于如何动态地在同一页面实现两个互传
关于图片与文本同存在数据库中的具体思路
实现分页的例子-使用存储过程来实现分页
使用索引服务器- 使用索引服务器的对象

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: 243 ::
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.