[mapserver-users] mapscript owsdispatch does not work, cgi mapserver does

[Daniel Morissette]

Did you solve this? This kind of stuff could happen if you have multiple 
copies of GDAL/OGR installed on the system, one with Xerces and one 
without. Make sure your script is really using the copy of GDAL/OGR that 
you think it is.


On 11-05-19 08:37 AM, Jachym Cepicky wrote:
> Hi,
>
> I have strange problem, I need to use mapobject.OWSDispatch with WMS
> GetMap request, and I do expect image at the output.
>
> I have prepared small python wrapper script, which should load the
> mapfile, perform owsdispatch and return the result. It does not work
> (saying something about missing xerces support, which is not true, see
> below).
>
> When I use *exactly the same* mapfile, but with simple shell wrapper
> (so no mapscript), it works perfectly.
>
> Examples:
>
> (1) Shell script wrapper:
>
> #!/bin/sh
> export MS_MAPFILE="/tmp/wfs02.map"
> /usr/lib/cgi-bin/mapserv
>
> http://localhost/cgi-bin/owsviewer2.sh?LAYERS=kraje&TRANSPARENT=TRUE&FORMAT=image%2Fpng&EXCEPTIONS=XML&VERSION=1.3.0&STYLES=default&CRS=EPSG%3A4326&SERVICE=WMS&REQUEST=GetMap&BBOX=49,12,51,18&WIDTH=1000&HEIGHT=634
>
> ->  Image is returned
>
>
>
> (2) Python script:
>
> #!/usr/bin/python
> import mapscript
> mapobj = mapscript.mapObj("/tmp/wfs02.map")
> request = mapscript.OWSRequest()
> request.loadParams()
> print mapobj.OWSDispatch(request)
>
> http://localhost/cgi-bin/owsviewer2.py?LAYERS=kraje&TRANSPARENT=TRUE&FORMAT=image%2Fpng&EXCEPTIONS=XML&VERSION=1.3.0&STYLES=default&CRS=EPSG%3A4326&SERVICE=WMS&REQUEST=GetMap&BBOX=49,12,51,18&WIDTH=1000&HEIGHT=634
>
> ->
>
> <?xml version='1.0' encoding="ISO-8859-1" standalone="no" ?>
> <ServiceExceptionReport version="1.3.0"
> xmlns="http://www.opengis.net/ogc"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xsi:schemaLocation="http://www.opengis.net/ogc
> http://schemas.opengis.net/wms/1.3.0/exceptions_1_3_0.xsd">
> <ServiceException>
> msDrawMap(): Image handling error. Failed to draw layer named'kraje'.
> msOGRFileOpen(): OGR error. Open failed for OGR connection in layer `kraje'.
> File /tmp/mapserv/4dd50e3f_54c_0..tmp.gml appears to be GML but the
> GML reader can't
> be instantiated, likely because Xerces support wasn't
> configured in.
>
> </ServiceException>
> </ServiceExceptionReport>
>
> What am I doing wrong?
>
> Thanks
>
> Jachym
>
>
>
>
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> mapserver-users at lists.osgeo.org
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-- 
Daniel Morissette
http://www.mapgears.com/
Provider of Professional MapServer Support since 2000