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Reading XML file with ASP
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Reading XML file with ASP
http://www.stardeveloper.com/asp_readxml_1.asp
XML stands for Extensible Markup Language. XML can be used in many ways and one of which is 'data storage'. This is the one we will be exploring in this article. XML along with XSL ( Extensible Stylesheet Language ) can by used to present data on the web pages. XML provides the data and XSL allows us to present it the way we want. Remember though that not all browsers support XML on the client side, only Micrsoft Internet Explorer 5.0 and above support XML. XML can also be used to perform RPC ( Remote Procedure Call ). Actually this capability of XML to allow communication between distant applications is so strong that Microsoft has developed SOAP ( Simple Object Access Protocol ) specification which uses XML to allow communication between remote applications. XML can be used for a lot more purposes which I haven't mentioned here. Also keep in mind that Microsoft's future .NET platform will make use of XML even more than any tool does today. ASP+, ADO+ and others will use XML to define and present data. So if you are comfortable with XML today, it will help you in the near future when you will be getting yourself ready to develop applications in the revolutionary platform called Microsoft .NET.
ASP > Tips and Tutorials > XML and ASP
Oct 10, 2006
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By now, most of our readers are familiar, at least in principle, with XML - the w3c's platform neutral data markup language. However not everyone knows how to use XML with ASP. In this article, I'll run you through using ASP and JScript to open and read XML files. in the next article, I'll show you how to create and modify XML with ASP.
The example I'm going to show you is in use on my office intranet, for the purposes of identifying who is logged in. since all the machines in the office have a static, unique IP, I've used Request.ServerVariables("remote_host") to identify the machine, and XML to map machine to user. It's a little courtesy app, and also allows me to restrict administrative functions to only five machines in the entire office.
The example I'm going to show you is in use on my office intranet, for the purposes of identifying who is logged in. since all the machines in the office have a static, unique IP, I've used Request.ServerVariables("remote_host") to identify the machine, and XML to map machine to user. It's a little courtesy app, and also allows me to restrict administrative functions to only five machines in the entire office.
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RSS files can be generated using Active Server Pages (ASP). It is OK for an RSS file to have a .asp suffix. In this example an RSS 0.91 file is generated, but it could easily be applied to other RSS versions. Similarly in this case the site stores its articles in a Microsoft Access database, but the database connection could be changed to reflect a Microsoft SQL Server database.
You can follow the example below or if you prefer you can download it in a text file here. You may get an XML error when you try and open the text file, just view source to get the code
You can follow the example below or if you prefer you can download it in a text file here. You may get an XML error when you try and open the text file, just view source to get the code
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A brief introduction to working with the XMLDom in ASP and XPath. Complete with examples and desriptions of everything. First part of several upcoming articles.
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Dim BlnLinkBack, sReciprocalURL, sReciprocalLinkURLText
BlnLinkBack=False
sLinkBackURL="www.codefixer.com" 'this is the URL we wish to check for
sReciprocalURL= "www.codefixer.com/tutorials/index.asp" 'This is the URL
'we are going to check against
BlnLinkBack=False
sLinkBackURL="www.codefixer.com" 'this is the URL we wish to check for
sReciprocalURL= "www.codefixer.com/tutorials/index.asp" 'This is the URL
'we are going to check against
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This solution presents several limitations both on the client and server side. We must use the POST method (because the GET can't manage this type of data), and we have no solutions to trigger a POST processing without using an HTML form. When we send data to the TargetURL, the browser loads this page as the new current page and we have an undesirable "context switch."
The ENCTYPE property defines the Multipurpose Internet Mail Extensions (MIME) encoding for the form and must be set to "multipart/form-data" for file upload forms. When we set this property to "multipart/form-data" we obtain a different structure of the POST buffer (which is also more complex) and the Request ASP object can't access the form contents. Therefore, we can read the POST buffer using the Request.binaryRead method, but we can't use scripting languages to do this. The Request.binaryRead method returns a VTarray (which is a variant array of unsigned one byte characters) while scripting languages can manage only variant variables. We can resolve this problem only by using a specific, custom ASP component or ISAPI extension, such as CPSHOST.DLL. This behavior is by design.
The ENCTYPE property defines the Multipurpose Internet Mail Extensions (MIME) encoding for the form and must be set to "multipart/form-data" for file upload forms. When we set this property to "multipart/form-data" we obtain a different structure of the POST buffer (which is also more complex) and the Request ASP object can't access the form contents. Therefore, we can read the POST buffer using the Request.binaryRead method, but we can't use scripting languages to do this. The Request.binaryRead method returns a VTarray (which is a variant array of unsigned one byte characters) while scripting languages can manage only variant variables. We can resolve this problem only by using a specific, custom ASP component or ISAPI extension, such as CPSHOST.DLL. This behavior is by design.
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