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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
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On Oct 3, 2011, at 12:08 PM, Dennis Heimbigner wrote: > the url part is fine. The issue has to do with url escaping > and especially with escaping of the constraint. > For those of you running non-tds servers, the question is: > do you unescape the query part or not upon receiving the > incoming url. Hyrax handles unescaping the URL. It's process is to unescape all URL escape codes (%xx) except spaces (which are %20) and the do whatever needs to be done. The reason it defers unescaping spaces is to streamline parsing of identifiers in their names. James > > > Roland Schweitzer wrote: >> On 10/03/2011 03:37 AM, Raymond Cramer wrote: >>> I am having a similar problem. From a browser I can return ASCII data, so >>> the >>> OPeNDAP is working. >>> http://...../thredds/dodsC/vault/..._cf.nc.ascii?crs,depth[3599:1:3719][19199:1:19319] >>> >>> >>> If I try to access this through code, using http my log file fills up with >>> msgs which suggests I can't use http (or something else needs setting ;-)): >> I believe that the only way to do this via the Java API is to open the >> unconstrained URL (http://...../thredds/dodsC/vault/..._cf.nc) and then use >> the API to request the hyperslab you want rather than trying to open the >> constrained URL. >> Roland >>> Exception >>> http://....:8080/thredds/dodsC/vault/...._cf.nc?crs,depth[3600:1:3719][19200:1:19319],lat[3600:1:3719],lon[19200:1:19319] >>> >>> java.lang.IllegalArgumentException: Invalid uri >>> 'http://....:8080/thredds/dodsC/vault/...._cf.nc?crs,depth[3600:1:3719][19200:1:19319],lat[3600:1:3719],lon[19200:1:19319]': >>> >>> Invalid query >>> at >>> org.apache.commons.httpclient.HttpMethodBase.<init>(HttpMethodBase.java:222) >>> >>> at >>> org.apache.commons.httpclient.methods.HeadMethod.<init>(HeadMethod.java:94) >>> at >>> ucar.unidata.io.http.HTTPRandomAccessFile.<init>(HTTPRandomAccessFile.java:92) >>> >>> at >>> ucar.unidata.io.http.HTTPRandomAccessFile.<init>(HTTPRandomAccessFile.java:78) >>> >>> at ucar.nc2.NetcdfFile.getRaf(NetcdfFile.java:300) >>> at ucar.nc2.NetcdfFile.open(NetcdfFile.java:281) >>> at ucar.nc2.dataset.NetcdfDataset.openFile(NetcdfDataset.java:335) >>> at ucar.nc2.dataset.NetcdfDataset.openFile(NetcdfDataset.java:280) >>> ... >>> >>> If I try to use dods, I get a lot more msgs, it accesses the file, outputs >>> the header data but fails on the data (when the call becomes http again for >>> the DAS?): >>> >>> [org.apache.commons.httpclient.HttpMethodBase] Resorting to protocol version >>> default close connection policy >>> [org.apache.commons.httpclient.HttpMethodBase] Should NOT close connection, >>> using HTTP/1.1 >>> [org.apache.commons.httpclient.HttpConnection] enter >>> HttpConnection.isResponseAvailable() >>> [org.apache.commons.httpclient.HttpConnection] enter >>> HttpConnection.releaseConnection() >>> [org.apache.commons.httpclient.HttpConnection] Releasing connection back to >>> connection manager. >>> [org.apache.commons.httpclient.MultiThreadedHttpConnectionManager] enter >>> HttpConnectionManager.releaseConnection(HttpConnection) >>> [org.apache.commons.httpclient.MultiThreadedHttpConnectionManager] Freeing >>> connection, hostConfig=HostConfiguration[host=http://....:8080] >>> [org.apache.commons.httpclient.MultiThreadedHttpConnectionManager] enter >>> HttpConnectionManager.ConnectionPool.getHostPool(HostConfiguration) >>> [org.apache.commons.httpclient.util.IdleConnectionHandler] Adding connection >>> at: ........ >>> [org.apache.commons.httpclient.MultiThreadedHttpConnectionManager] Notifying >>> no-one, there are no waiting threads >>> [ucar.nc2.dods.DODSNetcdfFile] DODSNetcdfFile >>> dods://....:8080/thredds/dodsC/vault/...._cf.nc?crs,depth[3600:1:3719][19200:1:19319],lat[3600:1:3719],lon[19200:1:19319] >>> >>> java.lang.IllegalArgumentException: Invalid uri >>> 'http://....:8080/thredds/dodsC/vault/...._cf.nc.das?crs,depth[3600:1:3719][19200:1:19319],lat[3600:1:3719],lon[19200:1:19319]': >>> >>> Invalid query >>> at >>> org.apache.commons.httpclient.HttpMethodBase.<init>(HttpMethodBase.java:222) >>> >>> at >>> org.apache.commons.httpclient.methods.GetMethod.<init>(GetMethod.java:89) >>> at opendap.dap.DConnect2.openConnection(DConnect2.java:205) >>> at opendap.dap.DConnect2.getDAS(DConnect2.java:399) >>> at ucar.nc2.dods.DODSNetcdfFile.<init>(DODSNetcdfFile.java:186) >>> at ucar.nc2.dataset.NetcdfDataset.openDODS(NetcdfDataset.java:379) >>> at ucar.nc2.dataset.NetcdfDataset.openFile(NetcdfDataset.java:316) >>> at ucar.nc2.dataset.NetcdfDataset.openFile(NetcdfDataset.java:280) >>> ..... >>> ERROR [uk.ac.bodc.Netcdf_Utils] trying to open >>> dods://....:8080/thredds/dodsC/vault/...._cf.nc?crs,depth[3600:1:3719][19200:1:19319],lat[3600:1:3719],lon[19200:1:19319] >>> >>> java.io.FileNotFoundException: Cant open >>> dods://....:8080/thredds/dodsC/vault/...._cf.nc?crs,depth[3600:1:3719][19200:1:19319],lat[3600:1:3719],lon[19200:1:19319] >>> >>> or as DODS >>> dods://....:8080/thredds/dodsC/vault/...._cf.nc?crs,depth[3600:1:3719][19200:1:19319],lat[3600:1:3719],lon[19200:1:19319] >>> >>> Invalid uri >>> 'http://....:8080/thredds/dodsC/vault/...._cf.nc.das?crs,depth[3600:1:3719][19200:1:19319],lat[3600:1:3719],lon[19200:1:19319]': >>> >>> Invalid query >>> at ucar.nc2.dataset.NetcdfDataset.openDODS(NetcdfDataset.java:381) >>> at ucar.nc2.dataset.NetcdfDataset.openFile(NetcdfDataset.java:316) >>> at ucar.nc2.dataset.NetcdfDataset.openFile(NetcdfDataset.java:280) >>> .... >>> >>> I am accessing this through inFile = NetcdfDataset.openFile(inFileName, >>> null); >>> >>> I hope I haven't broken any rules for the length of this msg, hopefully >>> there's sufficient info that someone recognises the problem. >>> >>> -- >>> View this message in context: >>> http://netcdf-java.1577316.n2.nabble.com/Getting-a-NetcdfFile-object-from-a-dods-url-tp6677113p6854222.html >>> >>> Sent from the NetCDF-Java mailing list archive at Nabble.com. >>> >>> _______________________________________________ >>> netcdf-java mailing list >>> netcdf-java@xxxxxxxxxxxxxxxx >>> For list information or to unsubscribe, visit: >>> http://www.unidata.ucar.edu/mailing_lists/ >> _______________________________________________ >> netcdf-java mailing list >> netcdf-java@xxxxxxxxxxxxxxxx >> For list information or to unsubscribe, visit: >> http://www.unidata.ucar.edu/mailing_lists/ > > _______________________________________________ > netcdf-java mailing list > netcdf-java@xxxxxxxxxxxxxxxx > For list information or to unsubscribe, visit: > http://www.unidata.ucar.edu/mailing_lists/ -- James Gallagher jhrg at mac.com
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