[Mapserver-users] Cascading WMS Problem
andreas.mueller at bfua.de
andreas.mueller at bfua.de
Mon Nov 10 11:28:50 EST 2003
Hi,
I'm trying to cascade an OGC WMS with MapServer 4.0 and I'm having some
problems. We set up a test WMS with MapServer and everything worked fine. But when
we tried to access the "real one" all we get is an error message.
Can anybody give me a clue on how to set up the map file?
Or is it a problem of the "to be cascaded" server?
What we have:
1. Cascading OGC WMS which works fine:
...
LAYER
NAME "test"
TYPE RASTER
STATUS OFF
CONNECTION "http://myserver/cgi-bin/fnvref_wms?"
CONNECTIONTYPE WMS
METADATA
"wms_srs" "EPSG:31466"
"wms_name" "reference"
"wms_server_version" "1.1.0"
"wms_formatlist" "image/png,image/jpeg,image/wbmp"
"wms_format" "image/png"
"wms_title" "TEST_TITLE"
END
END
...
2. Cascading OGC WMS which doesn't work:
...
LAYER
NAME "BK50"
TYPE RASTER
STATUS ON
CONNECTION "http://www.geoserver.nrw.de:80/GeoOgcWms1.3/servlet/BK50?"
CONNECTIONTYPE WMS
METADATA
"wms_name" "BK50:Bodenkarte"
"wms_server_version" "1.1.0"
"wms_formatlist" "image/png,image/jpeg,image/bmp"
"wms_format" "image/png"
"wms_title" "Geoserver Bodenkarte"
"wms_srs" "EPSG:31466 EPSG:31462 EPSG:31492 EPSG:31467 EPSG:25831
EPSG:25832 EPSG:25833"
"wms_boundingbox" "EPSG:31466 2490637 5574425 2738496 5821724"
"wms_latlonboundingbox" "5.8686 50.3018 9.5103 52.4726"
END
END
...
3. Request, which results in an error:
http://localhost/cgi-
bin/mapserv?map=d:/apache/apache/htdocs/itasca/demonrw2.map&REQUEST=GetM
ap&BBOX=2500000,5600000,2505000,5605000&LAYERS=BK50&WIDTH=600&HEIG
HT=600&EXCEPTION=INIMAGE&VERSION=1.1.0&STYLES=&SRS=EPSG:31466&S
ERVICE=WMS
4. Error message of the cascaded server
<head><title>Error: 500</title></head>
<body>
<h1>Error: 500</h1>
<h2>Location: /GeoOgcWms1.3/servlet/BK50</h2><b>Internal Servlet Error:</b><br>
<pre>java.lang.NullPointerException
at
de.aedgraphics.geoogcwms.ogcwmsservlet.ServiceDispatcher.dispatch(ServiceDispatc
her.java:225)
at
de.aedgraphics.geoogcwms.ogcwmsservlet.OgcWmsServlet.serviceRequest(OgcWms
Servlet.java:590)
at
de.aedgraphics.geoogcwms.ogcwmsservlet.OgcWmsServlet.doGet(OgcWmsServlet.ja
va:469)
at javax.servlet.http.HttpServlet.service(HttpServlet.java)
at javax.servlet.http.HttpServlet.service(HttpServlet.java)
at org.apache.tomcat.facade.ServletHandler.doService(Unknown Source)
at org.apache.tomcat.core.Handler.invoke(Unknown Source)
at org.apache.tomcat.core.Handler.service(Unknown Source)
at org.apache.tomcat.facade.ServletHandler.service(Unknown Source)
at org.apache.tomcat.core.ContextManager.internalService(Unknown Source)
at org.apache.tomcat.core.ContextManager.service(Unknown Source)
at
org.apache.tomcat.modules.server.Ajp12Interceptor.processConnection(Unknown
Source)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(Unknown Source)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(Unknown
Source)
at java.lang.Thread.run(Unknown Source)
</pre>
</body>
5. Manual request, which renders a valid picture
http://www.geoserver.nrw.de/GeoOgcWms1.3/servlet/BK50?REQUEST=GetMap&VER
SION=1.1.0&SERVICE=WMS&BBOX=2500000,5600000,2505000,5605000&LAYERS
=BK50:Bodenkarte&STYLES=&SRS=EPSG:31466&WIDTH=600&HEIGHT=600&FOR
MAT=image/png
5. Capabilities-File of the OGC WMS
<?xml version='1.0' encoding="ISO-8859-1" standalone="no" ?>
<!-- The DTD (Document Type Definition) given here must
correspond to the version number declared in the
WMT_MS_Capabilities element below. -->
<!DOCTYPE WMT_MS_Capabilities SYSTEM
"http://www.digitalearth.gov/wmt/xml/capabilities_1_1_0.dtd"
[
<!-- other vendor-specific elements defined here -->
<!ELEMENT VendorSpecificCapabilities EMPTY>
]> <!-- end of DOCTYPE declaration -->
<!-- The version number listed in the WMT_MS_Capabilities
element here must correspond to the DTD declared above. See the
WMT specification document for how to respond when a client
requests a version number not implemented by the server. -->
<WMT_MS_Capabilities version="1.1.0" updateSequence="0">
<!-- Service Metadata -->
<Service>
<!-- The WMT-defined name for this type of service -->
<Name>OGC:WMS</Name>
<!-- Human-readable title for pick lists -->
<Title>AED MapServer, Projekt 'BK50'</Title>
<!-- Narrative description providing additional information --
>
<Abstract>WMT Map Server maintained by AED Graphics AG.
Contact: info at aed-graphics.de. High-quality maps conform to ALK
norm.</Abstract>
<!-- Top-level web address of service or service provider. See
also OnlineResource
elements under <DCPType>. -->
<OnlineResource xmlns:xlink="http://www.w3.org/1999/xlink"
xlink:href="http://www.aed-graphics.de"
xlink:type="simple" />
<!-- Contact information -->
<ContactInformation>
<ContactPersonPrimary>
<ContactPerson></ContactPerson>
<ContactOrganization></ContactOrganization>
</ContactPersonPrimary>
<ContactPosition></ContactPosition>
<ContactAddress>
<AddressType></AddressType>
<Address></Address>
<City></City>
<StateOrProvince></StateOrProvince>
<PostCode></PostCode>
<Country></Country>
</ContactAddress>
<ContactVoiceTelephone></ContactVoiceTelephone>
<ContactFacsimileTelephone></ContactFacsimileTelephone>
<ContactElectronicMailAddress></ContactElectronicMailAddress>
</ContactInformation>
<Fees>none</Fees>
<AccessConstraints>none</AccessConstraints>
</Service>
<Capability>
<Request>
<GetCapabilities>
<Format>application/vnd.ogc.wms_xml</Format>
<DCPType>
<HTTP>
<Get>
<OnlineResource
xmlns:xlink="http://www.w3.org/1999/xlink"
xlink:href="http://www.geoserver.nrw.de:80/GeoOgcWms1.3/servlet/
BK50"
xlink:type="simple" />
</Get>
<Post>
<OnlineResource
xmlns:xlink="http://www.w3.org/1999/xlink"
xlink:href="http://www.geoserver.nrw.de:80/GeoOgcWms1.3/servlet/
BK50"
xlink:type="simple" />
</Post>
</HTTP>
</DCPType>
</GetCapabilities>
<GetMap>
<Format>image/png</Format>
<Format>image/bmp</Format>
<Format>image/jpeg</Format>
<Format>image/tiff</Format>
<DCPType>
<HTTP>
<Get>
<OnlineResource
xmlns:xlink="http://www.w3.org/1999/xlink"
xlink:href="http://www.geoserver.nrw.de:80/GeoOgcWms1.3/servlet/
BK50"
xlink:type="simple" />
</Get>
</HTTP>
</DCPType>
</GetMap>
<GetFeatureInfo>
<Format>text/html</Format>
<Format>text/plain</Format>
<DCPType>
<HTTP>
<Get>
<OnlineResource
xmlns:xlink="http://www.w3.org/1999/xlink"
xlink:href="http://www.geoserver.nrw.de:80/GeoOgcWms1.3/servlet/
BK50"
xlink:type="simple" />
</Get>
<Post>
<OnlineResource
xmlns:xlink="http://www.w3.org/1999/xlink"
xlink:href="http://www.geoserver.nrw.de:80/GeoOgcWms1.3/servlet/
BK50"
xlink:type="simple" />
</Post>
</HTTP>
</DCPType>
</GetFeatureInfo>
</Request>
<Exception>
<Format>application/vnd.ogc.se_xml</Format>
</Exception>
<Layer queryable="0" opaque="1">
<Title>BK50</Title>
<SRS>EPSG:31466 EPSG:31462 EPSG:31492 EPSG:31467
EPSG:25831 EPSG:25832 EPSG:25833</SRS>
<LatLonBoundingBox minx="5.8686" miny="50.3018"
maxx="9.5103" maxy="52.4726"></LatLonBoundingBox>
<BoundingBox SRS="EPSG:31466" minx="2490637.0"
miny="5574425.0" maxx="2738496.0"
maxy="5821724.0"></BoundingBox>
<BoundingBox SRS="EPSG:31462" minx="2490637.0"
miny="5574425.0" maxx="2738496.0"
maxy="5821724.0"></BoundingBox>
<BoundingBox SRS="EPSG:31492" minx="2490637.0"
miny="5574425.0" maxx="2738496.0"
maxy="5821724.0"></BoundingBox>
<BoundingBox SRS="EPSG:31467" minx="3276968.65"
miny="5579108.66" maxx="3534726.6"
maxy="5816047.82"></BoundingBox>
<BoundingBox SRS="EPSG:25831" minx="704216.0300000012"
miny="5576562.48" maxx="941910.0500000007"
maxy="5833989.26"></BoundingBox>
<BoundingBox SRS="EPSG:25832" minx="276982.98000000045"
miny="5577320.65" maxx="534641.129999999"
maxy="5814162.95"></BoundingBox>
<BoundingBox SRS="EPSG:25833" minx="-149791.3299999982"
miny="5612627.92" maxx="127273.4299999997"
maxy="5828222.05"></BoundingBox>
<ScaleHint min="0.138" max="69.053"></ScaleHint>
<Layer queryable="1" opaque="1">
<Name>BK50:Bodenkarte</Name>
<Title>Bodenkarte</Title>
</Layer>
</Layer></Capability>
</WMT_MS_Capabilities>
Thanks in advance
Andreas
--
Dr. Andreas Müller
Medien und Umwelt
Breite Straße 21 Rüttenscheider Straße 61
53111 Bonn 45130 Essen
Tel.: 02 28.9 73 83 90 Tel.: 02 01.79 49 41
Fax: 02 28.9 73 83 91 Fax: 02 01.79 49 42
info at m-u-u.de www.m-u-u.de
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