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From Bastien Duclaux <bast...@ezlogin.com>
Subject mod_jserv/5211: ServletRequest Parameters should be ordered
Date Thu, 28 Oct 1999 14:19:44 GMT

>Number:         5211
>Category:       mod_jserv
>Synopsis:       ServletRequest Parameters should be ordered
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    jserv
>State:          open
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Thu Oct 28 07:20:00 PDT 1999
>Last-Modified:
>Originator:     bastien@ezlogin.com
>Organization:
apache
>Release:        All releases
>Environment:
All environnements (Unix/NT)
>Description:
Parameters names/values are stored in an Hashtable named params inside the JServConnection
class.
Some web servers and CGI scripts require parameters to be posted in the same order they appear
in the HTML page.
When calling getParametersNames() and getParametersValues(), JServ should return them in the
order they appear in the HTML page from which the POST originated.
>How-To-Repeat:
Easy to reproduce:
<form method=POST action=/bin/MyServlet>
<input type=hidden name="param1" value="myvalue1">
<input type=hidden name="param2" value="myvalue2">
... (add as many parameters as you want)
</form>


And in the servlet
Enumeration e=req.getParameterNames()

While (e.hasMoreElements())
 out.println(e.nextElement());

Parameters Names will not be returned in the correct order.
>Fix:
Change the Hashtable where params are stored by an OrderedHashtable. 
Forget about the javax.servlet.HttpUtil class :
postParameters = HttpUtils.parsePostData(getContentLength(), is);

Free implementations of an OrderedHashtable (which should extend Hashtable for compatibility
with JSDK) are available on the net.
>Audit-Trail:
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