Starting to learn geotools 2.7.4.
I've got a simple application to try to generate a map from a WMS server.
I've found a map server on the web at
http://labs.metacarta.com/wms/vmap0
I can use this URL to get the capabilities of the server, not a problem. When
I try to get a map, however, I print out the URL from geotools
http://vmap0.tiles.osgeo.org/wms?SERVICE=WMS&LAYERS=basic&FORMAT=image%2Fpng&HEIGHT=600&TRANSPARENT=TRUE&REQUEST=GetMap&WIDTH=800&BBOX=-180.0,-90.0,180.0,90.0&STYLES=&VERSION=1.1.1
and when submitted, generates the dump below.
Questions that come up include
- Why did the initial url change from ...com/wms/vmap0 to .com/wms and
how can I prevent this.
- Got the following lines to set SRS and bounding box
- CRSEnvelope env = new
CRSEnvelope("EPSG:4326",minLon,minLat,maxLon,maxLat);
- request.setBBox(env);
- What happened to my SRS in the final URL? If I tweak the URL (add the
vmap0) and submit it manually, I get a missing SRS message.
java.lang.IllegalArgumentException: im == null!
at javax.imageio.ImageIO.write(ImageIO.java:1457)
at javax.imageio.ImageIO.write(ImageIO.java:1521)
at GeoTools.Test1.saveImage(Test1.java:212)
at GeoTools.Test1$2.actionPerformed(Test1.java:132)
at
javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
at
javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
at
javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at
javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
at
javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
at java.awt.Component.processMouseEvent(Component.java:6290)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
at java.awt.Component.processEvent(Component.java:6055)
at java.awt.Container.processEvent(Container.java:2039)
at java.awt.Component.dispatchEventImpl(Component.java:4653)
at java.awt.Container.dispatchEventImpl(Container.java:2097)
at java.awt.Component.dispatchEvent(Component.java:4481)
at
java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4575)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4236)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4166)
at java.awt.Container.dispatchEventImpl(Container.java:2083)
at java.awt.Window.dispatchEventImpl(Window.java:2482)
at java.awt.Component.dispatchEvent(Component.java:4481)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:648)
at java.awt.EventQueue.access$000(EventQueue.java:84)
at java.awt.EventQueue$1.run(EventQueue.java:607)
at java.awt.EventQueue$1.run(EventQueue.java:605)
at java.security.AccessController.doPrivileged(Native Method)
at
java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at
java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
at java.awt.EventQueue$2.run(EventQueue.java:621)
at java.awt.EventQueue$2.run(EventQueue.java:619)
at java.security.AccessController.doPrivileged(Native Method)
at
java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:618)
at
java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at
java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Any help would be greatly appreciated and if there is info that I should be
providing that I'm not, please forgive this time and I'll pass along other info.
Thanks
E. Scott Stricker
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