javascript asp教程服务器对象
2018-09-06 12:19
Overview:
The Server Object has seven (7) Methods, one (1) Property, zero (0) Events, and zero (0) Collections.
List of Methods:
Server Methods CreateObject( ) Server.CreateObject(ADODB.Recordset)
Create an instance of an Object Execute( ) Server.Execute(fileName.asp)
Executes an outside file (effect is similar to SSI) GetLastError( ) Server.GetLastError()
Returns location and description of the last ASP error HTMLEncode( ) Server.HTMLEncode(some String)
Encodes string to HTML characters MapPath( ) Server.MapPath(\\virtualFolder)
Converts virtual path to physical path Transfer( ) Server.Transfer(fileName.asp)
Transfers execution out of one page and into another URLEncode( ) Server.URLEncode(some String)
Encodes string to URL standards
Below is the script for Lesson 14.
<%@LANGUAGE=JavaScript%> <HTML> <BODY> <%=Server.URLEncode(Hello, this string is URL Encoded!)%> <BR><BR> Now lets see a reprint of Script14a.asp. I did not type it manually. Instead, I let Server.CreateObject( ) do all the work.<BR> <STRONG> <% Server.ScriptTimeout=10 var ASPScriptObject = Server.CreateObject(Scripting.FileSystemObject); var myPath=Server.MapPath(\\) + \\Section04\\script14a.asp var AspScript = ASPScriptObject.OpenTextFile(myPath); var outputScript=; while(!AspScript.AtEndOfStream) { outputScript += AspScript.ReadLine() + \r; } outputScript = new String(outputScript); outputScript=Server.HTMLEncode(outputScript) AspScript.Close(); outputScript = <PRE> + outputScript + </PRE>; Response.Write(outputScript) %> </STRONG> </BODY> </HTML>
Click Hereto run the script in a new window.
I demonstrated four methods in the script14.asp. Well take them from top to bottom.
Explaining the Script:
Server.URLEncode() does exactly what you think it does. It takes a string and encodes it to RFC 1738 standards. Thats more than you ever wanted to know about Server.URLEncode(), isnt it?
Next on the list is Server.MapPath(). Looking back at script14.asp, do you see the double slashes (\\) in the MapPath argument? Thats not an accident. We have to use escape characters in JavaScript.
The last Method I demonstrate is Server.HTMLEncode(). It converts HTML flags into non-HTML equivalents.
The Lone Property:
Server has one property: ScriptTimeout. It sets the maximum number of seconds allowable for script execution. If the script execution exceeds that time, then it times out. The user gets an ugly message but at least the Web Server can quit executing your darned greedy script and go about other business.