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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Your pattern allows for upper case letters and you’re passing lower case. Hence the error.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Steve<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Li Quansheng [mailto:quansheng.cs@gmail.com]
<br>
<b>Sent:</b> Saturday, April 21, 2012 10:38 AM<br>
<b>To:</b> mapserver-users@lists.osgeo.org; Lime, Steve D (DNR)<br>
<b>Subject:</b> mapserver 5.6 CGI output GeoJSON format 2<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">hi guys,Steve<br>
A few day ago I post an item " mapserver 5.6 CGI output GeoJSON format " <a href="http://lists.osgeo.org/pipermail/mapserver-users/2012-April/072028.html">
here</a> in which I asked a question about mapserver CGI output GeoJSON,finally with Steve's help I got it!<o:p></o:p></p>
<pre><o:p> </o:p></pre>
<pre>URL1:<a href="http://192.168.207.100/cgi-bin/mapserv?map=/opt/fgs/www/htdocs/xj1/xj1.map&layer=tielu&mode=nquery&qformat=geojson">http://192.168.207.100/cgi-bin/mapserv?map=/opt/fgs/www/htdocs/xj1/xj1.map&layer=tielu&mode=nquery&qformat=geojson</a>. <br><br><o:p></o:p></pre>
<pre>But now I want to add where-clause to prefilter,or I want set filter with CGI. The 'tielu' layer stored in postgis including these fields: gid,type,name,comment,the_geom,<br>then I execute <br>URL2:<a href="http://192.168.207.100/cgi-bin/mapserv?map=/opt/fgs/www/htdocs/xj1/xj1.map&layer=tielu&mode=nquery&qlayer=tielu&qitem=name&qstring=namexx&qformat=geojson">http://192.168.207.100/cgi-bin/mapserv?map=/opt/fgs/www/htdocs/xj1/xj1.map&layer=tielu&mode=nquery&qlayer=tielu&qitem=name&qstring=namexx&qformat=geojson</a><br><br><o:p></o:p></pre>
<pre>but the output is as same as the URL1's output, in fact the qstring, qitem don't take affect.<br>I searched and visited <br><a href="http://www.osgeo.org/pipermail/mapserver-users/2003-April/042003.html">http://www.osgeo.org/pipermail/mapserver-users/2003-April/042003.html</a><br><br><o:p></o:p></pre>
<pre>and <br><a href="http://lists.osgeo.org/pipermail/mapserver-users/2009-August/062581.html">http://lists.osgeo.org/pipermail/mapserver-users/2009-August/062581.html</a>, which are all Steve's ansewer posts. <br>so I modified tielu layer in the mapfile as Steve's suggestion,<br><br><o:p></o:p></pre>
<pre>...<br> METADATA<br> 'ows_title' 'tielu'<br> "wfs_title" "tielu" <br> ....<br> "qstring_validation_pattern" '^[A-Z]{2,8}$' <br> END<br><br><o:p></o:p></pre>
<pre>...<br> then I execute <br><a href="http://192.168.207.100/cgi-bin/mapserv?map=/opt/fgs/www/htdocs/xj1/xj1.map&layer=tielu&mode=itemnquery&qlayer=tielu&qitem=name&qstring=namexx&qformat=geojson">http://192.168.207.100/cgi-bin/mapserv?map=/opt/fgs/www/htdocs/xj1/xj1.map&layer=tielu&mode=itemnquery&qlayer=tielu&qitem=name&qstring=namexx&qformat=geojson</a>,<br><br><o:p></o:p></pre>
<pre>and returns the error,<br>mapserv(): Web application error. Parameter 'qstring' value fails to validate.<o:p></o:p></pre>
<pre>msValidateParameter(): Regular expression error. Parameter pattern validation failed.<o:p></o:p></pre>
<pre>msEvalRegex(): Regular expression error. String failed expression test.<o:p></o:p></pre>
<pre style="margin-bottom:12.0pt">I have to search and search, but couldn't work out. any suggestion, thans very much.<br><br><o:p></o:p></pre>
<p class="MsoNormal"><o:p> </o:p></p>
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