Matakuliah : M0492 / Web-based Programming Lanjut
Tahun
: 2007
Web-based Programming Lanjut
Pertemuan 3
Server Processes and the ASP Server Object
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Include Files and ASP
Server-side Include (SSI) Directive
The ASP Server Object
Error Handling with the Server Object
Bina Nusantara
ASP #include Directive
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#include instruction takes the entire content of file and insert it into the page, replacing the <!-#include..--> line.
– separating script from content
– reduced maintenance costs
– an easy way to insert information that is specific to a server
connect.inc
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<%
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strConnect = “SERVER=myserver;DATABASE=mydb;DRIVER={SQL SERVER}; “ _
& “UID=username;PWD=secretpassword”
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%>
we can use connect.inc in any of our page with:
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<!-- #include file=“path_to_file\connect.inc” -->
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<%
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strTheConnectionString = strConnect
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%>
Bina Nusantara
‘From include file
Include File and ASP
• The #include instruction in an ASP page isn’t actually processed like a true SSI
directive.
• ASP recognizes as it parses the file.
• ssinc.dll is used directly to carry out the SSI #include directive.
• The complete page, with #include instruction replaced by the contents of the file,
is then interpreted by ASP.
• ASP has no control over what happens in the #include statement. To set the value
of the #include instruction file reference with ASP code doesn’t work.
Bina Nusantara
Include File and ASP
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<%
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‘This will *not* work
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strIncludeURL = Request.Form(“FileName”)
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%>
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<!-- #include file=“ <% = strIncludeURL %> “ -- >
This won’t work because ssinc.dll will look for a file named <%= strIncludeURL %>,
and won’t be able to find it
Bina Nusantara
Security of Include Files
• ASP page on a Web server cannot be downloaded through the Web services
section of IIS without the script they content being executed.
• Include files are often given the .inc or .txt file extension.
• If someone discovers the path and filename of include file, they can download it
without being executed as part of an ASP page by typing the URL into the Address
bar.
• To prevent, you may wish to give them the .asp file extension. In this case, if a
user attempts to download one, it is passed to ASP first. ASP will execute any
script code in the file, and only send the results.
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Security of Include Files
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<%
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strConnect = “SERVER=myserver;DATABASE=mydb;DRIVER={SQL SERVER}; “ _
& “UID=username;PWD=secretpassword”
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Response.Write vbCrlf
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%>
‘Output a carriage return character
The client will only receive a single carriage return and not the script code, because
it’s been executed on the server by ASP.
If we don’t include the carriage return, the browser hangs waiting for a response.
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Server Side Include Directives
Directive
#include
Description
Insert the contents of a specified file into the response stream being sent to the client, replacing the directive. For
example:
<!-- #include FILE=“usefulbits.inc” -->
This inserts the contents of the file named usefulbits.inc into the response. The file can be described by a relative
or full path and filename combination, such as FILE=“..\scripts\myscr.inc”. It can alternatively be described using a
virtual relative or absolute path using the VIRTUAL attribute, for example:
<!-- #include VIRTUAL=“/mysite/usefulbits.inc” -->
<!-- #include VIRTUAL=“../../thisbits/usefulbits.inc” -->
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Server Side Include Directives
Directive
#config
Description
Specifies the format that will be used for dates, times, and file sizes in following directives, and the text of the
generic SSI error message that is returned to the client. For example:
<!-- #config ERRMSG=“SSI Processing Error” -->
Sets the SSI error message text to ‘SSI Processing Error’.
<!-- #config TIMEFMT=“%A, %B %d %Y %H:%M:%S” -->
Sets the format for dates and times that are returned by following SSI directives .This example sets a format style of
Saturday, August 14 2004 10:34:50.
<!-- #config SIZEFMT=“BYTES”-->
Sets the unit by which file size returned by following SSI directives will be calculated. This example sets the unit to
bytes. The alternative value for SIZEFMT is “ABBREV”, which specifies that the size calculation will return the file
size in kilobytes (KB).
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Server Side Include Directives
Directive
#echo
Description
Inserts the value of an HTTP environment variable into the response stream being sent to the client, replacing the
directive. For example:
<!-- #echo VAR=“SERVER_NAME”-->
Writes the name of the server that is executing the directive into the page.
#fsize
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Inserts the size of a specified file into the response stream being sent to the client, replacing the directive. For
example:
<!-- #fsize FILE=“Default.asp”-->
Like the #include directive, the file can alternatively be defined using a VIRTUAL path such as:
VIRTUAL=“/mysite/usefulbits.inc”
or
VIRTUAL=“../thisbits/usefulbits.inc”
Server Side Include Directives
Directive
#exec
Bina Nusantara
Description
Executes a program or a shell command on the server. For example:
<!-- #exec CGI=“/scripts/myapp.exe?value1=this&value2=that”-->
Executes the CGI application named myapp.exe in the context of the Web server. It will also pass the value of the query string
value1=this&value2=that to the application. The application runs in a separate memory space from the Web server.
<!-- #exec CMD=“cmd.exe /C iisreset /stop”-->
Starts an instance of the specified operating system command interpreter (in this case cmd.exe), and executes the command
iisreset /stop. The /C parameter instructs the command interpreter to exit automatically once the command has been executed.
You must add the following entry to the Windows Registry when using the CMD version of #exec:
HKEY_LOCAL_MACHINE
\SYSTEM
\CurrentControlSet
\Services
\W3SVC
\Parameters
\SSIEnableCmdDirective
Set the value to 1 and restart the WWW service to allow the CMD token to be used in the #exec directive. Set it to 0 to disable it
and prevent unauthorized use.
Server Side Include Directives
Directive
#flastmod
Bina Nusantara
Description
Insert the date and time that a specified file was last modified into the response stream being sent to the
client, replacing the directive. For example:
<!-- #flastmod FILE=“Default.asp” -->
Like the #include directive, the file can alternatively be defined using a VIRTUAL path such as:
VIRTUAL=“/mysite/usefulbits.inc”
or
VIRTUAL=“../thisbit/usefulbits.inc”
SSI/CGI In Action
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Bina Nusantara
<HTML>
<HEAD><TITLE>SSI Directives and The ASP Server Object</TITLE></HEAD>
<BODY>
<H1>SSI Directives and The ASP Server Object<HR></H1>
<UL><LI><A HREF="ssi_cgi.stm">Server Side Include and CGI Statements</A></LI>
<LI><A HREF="ssi_exec.asp">Using the #exec Server Side Include Directive</A></LI>
<LI><A HREF="show_server.asp">Using the ASP Server Object</A></LI></UL>
</BODY>
</HTML>
Using the SSI/CGI Processing Directives
intro.inc
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<P><DIV CLASS="subhead">Including Files with SSI</DIV>
This text has been inserted into the page using the Server-Side Include(SSI)
instruction:<BR>
&lt;!-- #include file="intro.inc" --&gt;<P>
ssi_cgi.stm
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Bina Nusantara
<HTML>
<HEAD>
<TITLE>SSI and CGI Instructions</TITLE>
<STYLE TYPE="text/css">
.subhead {font-size=1.25em }
</STYLE>
</HEAD>
<BODY>
<!-- #include FILE="intro.inc" -->
<P><DIV CLASS="subhead">SSI Statement</DIV>
&lt;!-- #config ERRMSG="SSI Processing Error" --&gt; &nbsp;
(sets error message in case of SSI error)<BR>
<!-- #config ERRMSG="SSI Processing Error" --><P>
Using the SSI/CGI Processing Directives
ssi_cgi.stm
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Details of file 'Default.asp':<BR>
&lt;!-- #config SIZEFMT="BYTES" --&gt; &nbsp;
(sets fsize to return size in bytes)<BR>
<!-- #config SIZEFMT="BYTES" -->
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&lt;!-- #fsize FILE="Default.asp" --&gt; &nbsp;
returns: &nbsp; <B> <!-- #fsize FILE="Default.asp" --> bytes</B><BR>
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&lt;!-- #config TIMEFMT="%A, %B %d %Y %H:%M:%S" --&gt; &nbsp;
(sets format for date/time results)<BR>
<!-- #config TIMEFMT="%A, %B %d %Y %H:%M:%S" -->
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&lt;!-- #flastmod FILE="Default.asp" --&gt;
returns: &nbsp; <B> <!-- #flastmod FILE="Default.asp" --></B><P>
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<DIV CLASS="subhead">HTTP Variables</DIV>
&lt;!-- #echo VAR="AUTH_TYPE" --&gt;
returns: &nbsp; <B> <!-- #echo VAR="AUTH_TYPE" --></B><BR>
&lt;!-- #echo VAR="AUTH_PASSWORD" --&gt;
returns: &nbsp; <B> <!-- #echo VAR="AUTH_PASSWORD" --></B><BR>
</BODY>
</HTML>
Bina Nusantara
Using the SSI/CGI Processing Directives
This page uses all the directives we’ve looked at earlier except #exec
directive
Bina Nusantara
Using the #exec Directive
ssi_exec.asp
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Bina Nusantara
<HTML><HEAD>
<TITLE>The SSI #exec Directive</TITLE>
<STYLE TYPE="text/css">
.subhead {font-size=1.25em }
</STYLE></HEAD>
<BODY>
<H1>The SSI #exec Directive<HR></H1>
<DIV CLASS="subhead">Stopping and Starting a Service</DIV>
<FORM ACTION="<%=Request.ServerVariables("SCRIPT_NAME") %>" METHOD="POST">
<INPUT TYPE="SUBMIT" NAME="cmdStop" VALUE="&nbsp;&nbsp;&nbsp;">
Stop the Microsoft Indexing Service<BR><BR>
<INPUT TYPE="SUBMIT" NAME="cmdStart" VALUE="&nbsp;&nbsp;&nbsp;">
Start the Microsoft Indexing Service<BR>
</FORM>
<%
If Len(Request.Form("cmdStart")) Then
Response.Redirect("startcis.stm")
End If
If Len(Request.Form("cmdStop")) Then
Response.Redirect("stopcis.stm")
End If
%>
</BODY>
</HTML>
Using the #exec Directive
Bina Nusantara
Running #exec Directive
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First, create the SSIEnableCmdDirective entry (with type DWORD) in the Registry on your Web
server machine under the existing key named:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W3SVC\Parameters
And then set the value to 1, as shown below:
Running #exec Directive
Fire up the Internet Services
Manager utility and Select the
directory containing the .stm files
that use #exec. Then open the
Properties dialog for that
directory. In the Direcory Security
page click the Edit button in the
Anonymous access and
authentication control section to
open the Authentication Methods
dialog.
Turn off the Anonymous access
checkbox. If you’re not using IE,
turn on the Basic authentication
option to allow non-IE browsers to
submit a username/password to
access the pages.
Bina Nusantara
Running #exec Directive
Restart the WWW service.
Bina Nusantara
Running #exec Directive
To be able to see the results of starting and stopping the service, open the Service
MMC snap-in and stop the Indexing Service.
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Starting and Stopping the Indexing Service
Bina Nusantara
Starting and Stopping the Indexing Service
startcis.stm
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<HTML><HEAD><TITLE>The SSI #exec Directive</TITLE></HEAD>
<BODY>
<H1>The SSI #exec Directive<HR></H1>
<P>Processing the SSI directive:</P>
<P><B>&lt;!-- #exec CMD="cmd.exe /c net start ciscv" --&gt;</B></P>
<!-- #exec CMD="cmd.exe /c net start ciscv" -->
<FORM ACTION="ssi_exec.asp">
<INPUT TYPE="SUBMIT" NAME="cmdOK" VALUE="&nbsp;&nbsp;&nbsp;">
&nbsp; Return to the previous page<P>
</FORM>
</BODY></HTML>
stopcis.stm
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Bina Nusantara
<HTML><HEAD><TITLE>The SSI #exec Directive</TITLE></HEAD>
<BODY>
<H1>The SSI #exec Directive<HR></H1>
<P>Processing the SSI directive:</P>
<P><B>&lt;!-- #exec CMD="cmd.exe /c net stop ciscv" --&gt;</B></P>
<!-- #exec CMD="cmd.exe /c net stop ciscv" -->
<FORM ACTION="ssi_exec.asp">
<INPUT TYPE="SUBMIT" NAME="cmdOK" VALUE="&nbsp;&nbsp;&nbsp;">
&nbsp; Return to the previous page<P>
</FORM>
</BODY></HTML>
ASP Server Object
The Properties of the Server Object
Property
Description
ScriptTimeou Integer. Default = 90.
t
Sets or returns the number of seconds that script in the page can
execute for before the server aborts page execution and reports an
error. This automatically halts and removes from memory pages that
contain errors that may lock execution into a loop, or those that stall
while waiting for a resource to become available. This prevents the
server becoming overloaded with badly behaved pages. You may need
to increase this value for pages that do take a long time to run.
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ASP Server Object
The Methods of the Server Object
Method
Description
CreateObject(“identifier”)
Creates an instance of the object (a component, application or scripting object) that is
identified by “identifier”, and return a reference to it that can be used in our code. Can
be used in the global.asa page of a virtual application to create objects with sessionlevel or application-level scope. The object can be identified by its ClassID such as
“{clsid:BD96C556-65A3…37A9}” or by a ProgID string such as “ADODB.Connection”.
Execute(“url”)
Stops executing of the current page and transfer control to the page specified in “url”.
The user’s current environment is carried over to the new page. After that page has
finished execution, control passes back to the original page and execution resumes at
the statement after the Execute method call.
GetLastError( )
Returns a reference to an ASPError object that holds details of the last error that
occurred within the ASP processing of the page. The information exposed by the
ASPError object includes the file name, line number, error code, etc.
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ASP Server Object
The Methods of the Server Object
Method
Description
HTMLEncode(“string”)
Returns a string that is a copy of the input value “string” but with all non-legal HTML characters –
such as ‘<‘. ‘>’, ‘&’, and double quotes – converted into the equivalent HTML entity – i.e. &lt;, &gt;,
&amp;, &quot;, etc.
MapPath(“url”)
Returns the full physical path and filename of the file or resource specified in “url”.
Transfer(“url”)
Stops execution of the current page and transfers control to the page specified in “url”. The user’s
current environment (i.e. session state and any current transaction state) is carried over to the
new page. Unlike the Execute method, execution doesn’t resume in the original page, but ends
when the new page has completed executing.
URLEncode(“string”)
Return a string that is a copy of the input value “string” but with all characters that are not valid
in a URL – such as ‘?’, ‘&’ and spaces – converted into the equivalent URL entity – i.e. ‘%3F’,
‘%26’, and ‘+’.
Bina Nusantara
Creating Object Instances
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VBScript supports CreateObject and GetObject methods.
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CreateObject method takes as its argument a ClassID or (more usually) a ProgID string, and
returns a new object of that type:
Set objNewObject = CreateObject(“ADODB.Connection”)
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GetObject method is normally used when we have a document of a specific type, and we want
to create an instance of an object that can handle this type of document:
Set objExcel = getObject(“C:\myfiles\sales.xlw”)
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We can also specify the type of object that we want as well as a filename, which is useful if
we have several objects that can handle that document type:
Set objExcel = getObject(“C:\myfiles\sales.xlw”, “Excel.Application”)
Bina Nusantara
Creating Object Instances
• JScript has getObject, which works like the VBScript version.
• JScript implements a function that works in the same way as VBScript
CreateObject method, named ActiveXObject.
objNewObject = new ActiveXObject(“This.Object”);
Bina Nusantara
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<HTML>
<HEAD> <TITLE>The Server Object</TITLE> </HEAD>
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<BODY>
<H2>The ASP Server Object<HR></H2>
<%
Quot = Chr(34)
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If Len(Request.Form("cmdCreate")) Then
strObjectName = Request.Form("txtObjectName")
On Error Resume Next 'Turn off default error handling
Set objObject = Server.CreateObject(strObjectName)
On Error Goto 0
If IsObject (objObject) Then
Response.Write "<B>Results:</B><BR>Successfully created object of " _
& "<B>" & Quot & strObjectName & Quot & "</B><HR>"
Else
Response.Write "<B>Results:</B><BR>Failed to create object of " _
& "<B>" & Quot & strObjectName & Quot & "</B><HR>"
End If
End If
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If Len(Request.Form("cmdExecute")) Then
strPath = Request.Form("txtExecute")
Response.Write "Currently executing the page: <B>" _
& Request.ServerVariables("SCRIPT_NAME") & "</B><BR>"
Server.Execute (strPath)
Response.Write "Currently executing the page: <B>" _
& Request.ServerVariables("SCRIPT_NAME") & "</B><BR><BR>"
End If
show_server.asp
Bina Nusantara
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If Len(Request.Form("cmdTransfer")) Then
strPath = Request.Form("txtTransfer")
Response.Write "Currently executing the page: <B>" _
& Request.ServerVariables("SCRIPT_NAME") & "</B><BR>"
Server.Transfer(strPath)
End If
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If Len(Request.Form("cmdGetLastError")) Then
Dim arrThis(3)
arrThis(4) = "Causes an error"
End If
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If Len(Request.Form("cmdMapPath")) Then
strValue = Request.Form("txtMapPath")
Response.Write "<B>Results:</B><BR>Server.MapPath(" & Quot & strValue _
& Quot & ") returned <B>" & Quot & Server.MapPath(strValue) _
& Quot & "</B><HR>"
End If
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If Len(Request.Form("cmdHTMLEncode")) Then
strValue = Request.Form("txtHTMLEncode")
strResult = Server.HTMLEncode(strValue)
strDisplay = Server.HTMLEncode(strResult)
Response.Write "<B>Results:</B><BR>Server.HTMLEncode (" & Quot & strResult _
& Quot & ") returned<BR><B>" & Quot & strDisplay & Quot _
& "</B><HR>"
End If.
show_server.asp
Bina Nusantara
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If Len(Request.Form("cmdURLEncode")) Then
strValue = Request.Form("txtURLEncode")
Response.Write "<B>Results:</B><BR>Server.URLEncode (" & Quot & strValue _
& Quot & ") returned<BR><B>" & Quot & Server.URLEncode (strValue) & Quot _
& "</B><HR>"
End If
%>
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<BIG>Property Value</BIG><BR>
<% Response.Write "Server.Timeout = <B>" & Server.ScriptTimeout & "</B></P>“ %>
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<FORM ACTION="<%=Request.ServerVariables("SCRIPT_NAME") %>" METHOD="POST">
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<BIG>Create an Instance of a Component</BIG><BR>
<INPUT TYPE="SUBMIT" NAME="cmdCreate" VALUE="&nbsp;&nbsp;&nbsp;">
&nbsp;Server.CreateObject(“ <INPUT TYPE="TEXT" NAME="txtObjectName" VALUE="">")<BR><BR>
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<BIG>Execute Another ASP Page</BIG><BR>
<INPUT TYPE="SUBMIT" NAME="cmdExecute" VALUE="&nbsp;&nbsp;&nbsp;">
&nbsp;Server.Execute(“ <INPUT TYPE="TEXT" NAME="txtExecute" VALUE="">")<BR>
<INPUT TYPE="SUBMIT" NAME="cmdTransfer" VALUE="&nbsp;&nbsp;&nbsp;">
&nbsp;Server.Transfer(“ <INPUT TYPE="TEXT" NAME="txtTransfer" VALUE="">")<BR><BR>
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<BIG>Get ASP Error Details</BIG><BR>
<INPUT TYPE="SUBMIT" NAME="cmdGetLastError" VALUE="&nbsp;&nbsp;&nbsp;">
&nbsp;Server.GetLastError()<BR><BR>
show_server.asp
Bina Nusantara
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<BIG>Miscellaneous Methods</BIG><BR>
<INPUT TYPE="SUBMIT" NAME="cmdMapPath" VALUE="&nbsp;&nbsp;&nbsp;">
&nbsp;Server.MapPath(“ <INPUT TYPE="TEXT" NAME="txtMapPath" VALUE="" SIZE="30">")<BR>
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<INPUT TYPE="SUBMIT" NAME="cmdHTMLEncode" VALUE="&nbsp;&nbsp;&nbsp;">
&nbsp;Server.HTMLEncode(“ <INPUT TYPE="TEXT" NAME="txtHTMLEncode" VALUE="" SIZE="30">")<BR>
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<INPUT TYPE="SUBMIT" NAME="cmdURLEncode" VALUE="&nbsp;&nbsp;&nbsp;">
&nbsp;Server.URLEncode(“ <INPUT TYPE="TEXT" NAME="txtURLEncode" VALUE="" SIZE="30">")<BR>
<BR>
</FORM>
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</BODY>
</HTML>
show_server.asp
Bina Nusantara
ASP Server Object
Bina Nusantara
The CreateObject Method of the Server Object
Quot = Chr(34)
If Len(Request.Form("cmdCreate")) Then
strObjectName = Request.Form("txtObjectName")
On Error Resume Next 'Turn off default error
handling
Set objObject = Server.CreateObject(strObjectName)
On Error Goto 0
If IsObject (objObject) Then
Response.Write
"<B>Results:</B><BR>Successfully created object of "
_
& "<B>" & Quot & strObjectName & Quot &
"</B><HR>"
Else
Response.Write "<B>Results:</B><BR>Failed to
create object of " _
& "<B>" & Quot & strObjectName & Quot &
"</B><HR>"
End If
End If
Bina Nusantara
Executing Other Pages
If Len(Request.Form("cmdExecute")) Then
strPath = Request.Form("txtExecute")
Response.Write "Currently executing the
page: <B>" _
&
Request.ServerVariables("SCRIPT_NAME") _
& "</B><BR>"
Server.Execute (strPath)
Response.Write "Currently executing the
page: <B>" _
&
Request.ServerVariables("SCRIPT_NAME") _
& "</B><BR><BR>"
End If
Bina Nusantara
Executing Other Pages
If Len(Request.Form("cmdTransfer")) Then
strPath = Request.Form("txtTransfer")
Response.Write "Currently executing the page: <B>" _
& Request.ServerVariables("SCRIPT_NAME") &
"</B><BR>"
Server.Transfer(strPath)
End If
Another_Page.asp
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Bina Nusantara
<%@ LANGUAGE=VBSCRIPT%>
<HR>
Currently executing the page: <B>Another_Page.asp</B><BR>
However the value of
<B>Request.ServerVariables("SCRIPT_NAME")</B> is still<BR>
<B><% =Request.ServerVariables("SCRIPT_NAME") %></B>
because the <B>Request</B> collection hold</BR>
the same values as they had in the page that executed this
one.<BR>
<FORM ACTION="<% =
Request.ServerVariables("HTTP_REFERER") %>"
METHOD="POST">
<INPUT TYPE="SUBMIT" NAME="cmdOK"
VALUE="&nbsp;&nbsp;&nbsp;">
&nbsp;Return to the Previous Page<P>
</FORM>
<HR>
Error Handling with the Server Object
Properties of the ASPError Object
Property
Description
ASPCode
Integer. The error number generated by ASP/IIS such as 0x800A0009.
ASPDescription
String. A detailed description of the error if it is ASP-related.
Category
String. The source of the error, i.e. internal to ASP, the scripting language, or an object.
Column
Integer. The character position within the file that generated the error.
Description
String. A short description of the error.
File
String. The name of the file that was being processed when the error occurred.
Line
Integer. The number of the line within the file that generated the error.
Number
Integer. A standard COM error code.
Source
Integer. The actual code, where available, of the line that caused the error.
Bina Nusantara
Error Page Mapping in IIS
In Internet Services
Manager, right click on
the directory for which
you want to edit
mappings, and select
Properties.
Bina Nusantara
Error Page Mapping in IIS
In the Custom Errors page of the
Properties dialog is a list of the
default mapping set up when IIS is
installed (unless, of course you’ve
already changed any).
Near the bottom of the list an entry
for HTTP error 500:100. These are
the generic errors such as Invalid
Application, Server Shutting Down,
etc. However, the 500:100 error
occurs specifically when ASP loads
a page that contains a syntax error.
The default mapping shown the
page named 500-100.asp will be
executed when such error occurs.
Bina Nusantara
Specifying a Custom Error Page
Click the Edit Properties
button in the Custom Errors
page to open the Error
Mapping Properties dialog.
Select URL in the message
Type drop-down list, and type
the full virtual path to your
own custom error page.
Bina Nusantara
Using the GetLastError Method and the ASPError
Object
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<%
Response.Status = "500 Internal Server Error"
Set objASPError = Server.GetLastError()
%>
Currently executing the page: <B>show_error.asp</B><P>
<B>Error Details:</B><BR>
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
ASPError.ASPCode = <% = objASPError.ASPCode %><BR>
ASPError.Number = <% = objASPError.Number %><BR>
17.
18.
19.
20.
<FORM ACTION="<% = Request.ServerVariables("HTTP_REFERER") %>" METHOD="POST">
<INPUT TYPE="SUBMIT" NAME="cmdOK" VALUE="&nbsp;&nbsp;&nbsp;">
&nbsp;Return to the Previous Page<P>
</FORM>
(0x<% =Hex(objASPError.Number) %>)<BR>
ASPError.Source = <% = Server.HTMLEncode(objASPError.Source) %><BR>
ASPError.Category = <% = objASPError.Category %><BR>
ASPError.File = <% = objASPError.File %><BR>
ASPError.Line = <% = objASPError.Line %><BR>
ASPError.Column = <% = objASPError.Column %><BR>
ASPError.Description = <% = objASPError.Description %><BR>
ASPError.ASPDescription = <% = objASPError.ASPDescription %><BR>
show_error.asp
Bina Nusantara
Using the GetLastError Method and the ASPError
Object
If Len(Request.Form("cmdGetLastError")) Then
Dim arrThis(3)
arrThis(4) = "Causes an error"
End If
Bina Nusantara
Getting Path Information with the Server Object
If Len(Request.Form("cmdMapPath")) Then
strValue = Request.Form("txtMapPath")
Response.Write "<B>Results:</B><BR>Server.MapPath(" & Quot & strValue _
& Quot & ") returned <B>" & Quot & Server.MapPath(strValue) _
& Quot & "</B><HR>"
End If
Bina Nusantara
The HTMLEncode Method of the Server Object
If Len(Request.Form("cmdHTMLEncode")) Then
strValue = Request.Form("txtHTMLEncode")
strResult = Server.HTMLEncode(strValue)
strDisplay = Server.HTMLEncode(strResult)
Response.Write "<B>Results:</B><BR>Server.HTMLEncode (" & Quot & strResult _
& Quot & ") returned<BR><B>" & Quot & strDisplay & Quot _
& "</B><HR>"
End If
Bina Nusantara
Formatting Data with the Server Object
Character
HTML Entity Equivalent
Character
HTML Entity Equivalent
<
&lt;
>
&gt;
&
&amp;
“
&quot;
©
&copy;
®
&#174;
Notice that the last of the example, the registered trademark symbol, is a
numeric value preceded with the ‘#’ character, rather than a text
abbreviation of the meaning (like copy for the copyright symbol).
All character with ANSI code value greater than 126 can be represented
in HTML as the ANSI code of the character in decimal, prefixed with &#
and suffixed with a semi-colon. So the ½ (one half) character has an
entity equivalent of &#189;.
Bina Nusantara
The URLEncode Method of the Server Object
If Len(Request.Form("cmdURLEncode")) Then
strValue = Request.Form("txtURLEncode")
Response.Write "<B>Results:</B><BR>Server.URLEncode (" & Quot & strValue _
& Quot & ") returned<BR><B>" & Quot & Server.URLEncode (strValue) & Quot _
& "</B><HR>"
End If
Bina Nusantara
Formatting Data for URLs
Character
HTTP/URL Replacement
Character
HTTP/URL Replacement
space
+
\
%5C
‘
%27
]
%5D
!
%21
^
%5E
#
%23
`
%60
$
%24
{
%7B
%
%25
|
%7C
&
%26
}
%7D
(
%28
+
%2B
)
%29
<
%3C
/
%2F
=
%3D
:
%3A
>
%3E
;
%3B
Chr(10)
ignored
[
%5B
Chr(13)
%0D
Bina Nusantara