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 中 Split 函数的实例
存贮过程
asp内置对象 ObjectContext详解
如何写出优秀的ASP应用
用ASP制作强大的搜索引擎
ASP 系列函数大全
彩色校验码的制作
ASP中使用SQL语句教程
ASP提速技巧五则
ASP进度条
在电子商务中实现购物车的方法
ASP读取系统时区的错误行为修正
Rs.open sql,conn,A,B 的A、B各代表什么?
FSO组件操作实例技巧
用asp连接各种数据库的方法
WEB打印设置解决方案一
WEB打印设置解决方案二
WEB打印设置解决方案三
实例分析CSS属性Display与Visibility不同
每页都有的表头和打印分页

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: 197 ::
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.