[google-appengine] Re: implementing asynchronous http in java
problem solved. I was referencing the app engine/gwt project from a
console app. apparently you can't do this. when I debug it as a
google app project, it works. hope this minor pain and lesson will
help someone else someday. thanks, David
On Feb 19, 2:13 pm, davidnelson
wrote:
> more info, I tried using the app engine version 1.3.0 and that's when
> I get nullpointerexceptions. switching back to 1.3.1 and I get the
> first exception I initially posted, sync or async.
>
> On Feb 19, 1:37 pm, Eli Jones wrote:
>
>
>
> > I don't code in Java.. but my guess is you're making a silly mistake in
> > there somewhere..
>
> > Copy pasting some other person's posted code from the Java AppEngine group I
> > see it done this way:
>
> > URL url = new URL(urlStr);
> > URLFetchService urlFetchService =
> > URLFetchServiceFactory.getURLFetchService();
> > HTTPRequest httpRequest = new
> > HTTPRequest(url, HTTPMethod.GET,followRedirects());
> > HTTPResponse response = urlFetchService.fetch(httpRequest);
>
> > On Fri, Feb 19, 2010 at 4:27 PM, davidnelson <
>
> > david.jonathan.nel...@gmail.com> wrote:
> > > weird, I get the same error even when I pin objects and call urlfetch
> > > synchronously:
>
> > > url = new URL(urlString);
> > > request = new HTTPRequest(url);
> > > request.addHeader(userAgentHeader);
> > > request.addHeader(authorizationHeader);
> > > request.addHeader(acceptEncodingHeader);
> > > request.addHeader(acceptCharsetHeader);
> > > // undo pinning after debug
> > > HTTPResponse response =
> > > urlFetchService.fetch(request);
> > > byte[] responseBytes =
> > > response.getContent();
> > > String responseString = new
> > > String(responseBytes);
> > > parseResponse(responseString);
> > > apiCallsMade++;
>
> > > On Feb 19, 7:33 am, Conor Power wrote:
> > > > apologies if I'm a little vague in my reply but I remember receiving
> > > > something similar when I first started using the URLFetchService and I
> > > think
> > > > it was related to the fact that I had imported the incorrect classes for
> > > > HTTPRequest or header or something like like. I think I just chose the
> > > first
> > > > one offered to me by the IDE ...
>
> > > > It was a while ago so I hope I'm not sending you on a wild goose chase.
>
> > > > On Fri, Feb 19, 2010 at 4:52 AM, davidnelson <
>
> > > > david.jonathan.nel...@gmail.com> wrote:
> > > > > Hi,
>
> > > > > I'm trying to implement async http in java. Here is the important
> > > > > part of the code:
>
> > > > > for (String urlString : urls)
> > > > > {
> > > > > // TODO: try and get rid of these two
> > > heap
> > > > > allocations
> > > > > url = new URL(urlString);
> > > > > request = new HTTPRequest(url);
> > > > > request.addHeader(userAgentHeader);
> > > > > request.addHeader(authorizationHeader);
> > > > >
> > > > > request.addHeader(acceptEncodingHeader);
> > > > > request.addHeader(acceptCharsetHeader);
>
> > > responses.add(URLFetchServiceFactory.getURLFetchService().fetchAsync(reques
> > > t));
> > > > > apiCallsMade++;
> > > > > }
> > > > > for (Future futureResponse :
> > > > > responses)
> > > > > {
> > > > > parseResponse(new
> > > > > String(futureResponse.get().getContent()));
> > > > > }
>
> > > > > I keep getting this error: "com.google.apphosting.api.ApiProxy
> > > > > $CallNotFoundException: The API package 'ur
[google-appengine] Re: implementing asynchronous http in java
more info, I tried using the app engine version 1.3.0 and that's when
I get nullpointerexceptions. switching back to 1.3.1 and I get the
first exception I initially posted, sync or async.
On Feb 19, 1:37 pm, Eli Jones wrote:
> I don't code in Java.. but my guess is you're making a silly mistake in
> there somewhere..
>
> Copy pasting some other person's posted code from the Java AppEngine group I
> see it done this way:
>
> URL url = new URL(urlStr);
> URLFetchService urlFetchService =
> URLFetchServiceFactory.getURLFetchService();
> HTTPRequest httpRequest = new
> HTTPRequest(url, HTTPMethod.GET,followRedirects());
> HTTPResponse response = urlFetchService.fetch(httpRequest);
>
> On Fri, Feb 19, 2010 at 4:27 PM, davidnelson <
>
>
>
> david.jonathan.nel...@gmail.com> wrote:
> > weird, I get the same error even when I pin objects and call urlfetch
> > synchronously:
>
> > url = new URL(urlString);
> > request = new HTTPRequest(url);
> > request.addHeader(userAgentHeader);
> > request.addHeader(authorizationHeader);
> > request.addHeader(acceptEncodingHeader);
> > request.addHeader(acceptCharsetHeader);
> > // undo pinning after debug
> > HTTPResponse response =
> > urlFetchService.fetch(request);
> > byte[] responseBytes =
> > response.getContent();
> > String responseString = new
> > String(responseBytes);
> > parseResponse(responseString);
> > apiCallsMade++;
>
> > On Feb 19, 7:33 am, Conor Power wrote:
> > > apologies if I'm a little vague in my reply but I remember receiving
> > > something similar when I first started using the URLFetchService and I
> > think
> > > it was related to the fact that I had imported the incorrect classes for
> > > HTTPRequest or header or something like like. I think I just chose the
> > first
> > > one offered to me by the IDE ...
>
> > > It was a while ago so I hope I'm not sending you on a wild goose chase.
>
> > > On Fri, Feb 19, 2010 at 4:52 AM, davidnelson <
>
> > > david.jonathan.nel...@gmail.com> wrote:
> > > > Hi,
>
> > > > I'm trying to implement async http in java. Here is the important
> > > > part of the code:
>
> > > > for (String urlString : urls)
> > > > {
> > > > // TODO: try and get rid of these two
> > heap
> > > > allocations
> > > > url = new URL(urlString);
> > > > request = new HTTPRequest(url);
> > > > request.addHeader(userAgentHeader);
> > > > request.addHeader(authorizationHeader);
> > > > request.addHeader(acceptEncodingHeader);
> > > > request.addHeader(acceptCharsetHeader);
>
> > responses.add(URLFetchServiceFactory.getURLFetchService().fetchAsync(reques
> > t));
> > > > apiCallsMade++;
> > > > }
> > > > for (Future futureResponse :
> > > > responses)
> > > > {
> > > > parseResponse(new
> > > > String(futureResponse.get().getContent()));
> > > > }
>
> > > > I keep getting this error: "com.google.apphosting.api.ApiProxy
> > > > $CallNotFoundException: The API package 'urlfetch' or call 'Fetch()'
> > > > was not found.". I looked around for any jars that were missing from
> > > > the classpath but didn't see anything missing. Do you know which jar
> > > > that code is in? I googled the error and also searched through this
> > > > group but found nothing.
>
> > > > Thanks,
> > > > David
>
> > > > --
> > > > You received this message because you are subscribed to the Google
> > Groups
> > > > "Google App Engine" group.
> > > > To post to this group, send email to google-appengine@go
[google-appengine] Re: implementing asynchronous http in java
At this point I'm feeling not so smart :-(
I can't even get synchronous urlfetch to work via the low level api:
URL url = new URL("http://www.google.com";);
URLFetchService urlFetchService =
URLFetchServiceFactory.getURLFetchService();
FetchOptions options =
FetchOptions.Builder.followRedirects();
HTTPRequest httpRequest = new
HTTPRequest(url, HTTPMethod.GET,options);
HTTPResponse response =
urlFetchService.fetch(httpRequest);
it throws a nullpointerexception with no stack trace and no source
code available to debug it.
On Feb 19, 1:37 pm, Eli Jones wrote:
> I don't code in Java.. but my guess is you're making a silly mistake in
> there somewhere..
>
> Copy pasting some other person's posted code from the Java AppEngine group I
> see it done this way:
>
> URL url = new URL(urlStr);
> URLFetchService urlFetchService =
> URLFetchServiceFactory.getURLFetchService();
> HTTPRequest httpRequest = new
> HTTPRequest(url, HTTPMethod.GET,followRedirects());
> HTTPResponse response = urlFetchService.fetch(httpRequest);
>
> On Fri, Feb 19, 2010 at 4:27 PM, davidnelson <
>
>
>
> david.jonathan.nel...@gmail.com> wrote:
> > weird, I get the same error even when I pin objects and call urlfetch
> > synchronously:
>
> > url = new URL(urlString);
> > request = new HTTPRequest(url);
> > request.addHeader(userAgentHeader);
> > request.addHeader(authorizationHeader);
> > request.addHeader(acceptEncodingHeader);
> > request.addHeader(acceptCharsetHeader);
> > // undo pinning after debug
> > HTTPResponse response =
> > urlFetchService.fetch(request);
> > byte[] responseBytes =
> > response.getContent();
> > String responseString = new
> > String(responseBytes);
> > parseResponse(responseString);
> > apiCallsMade++;
>
> > On Feb 19, 7:33 am, Conor Power wrote:
> > > apologies if I'm a little vague in my reply but I remember receiving
> > > something similar when I first started using the URLFetchService and I
> > think
> > > it was related to the fact that I had imported the incorrect classes for
> > > HTTPRequest or header or something like like. I think I just chose the
> > first
> > > one offered to me by the IDE ...
>
> > > It was a while ago so I hope I'm not sending you on a wild goose chase.
>
> > > On Fri, Feb 19, 2010 at 4:52 AM, davidnelson <
>
> > > david.jonathan.nel...@gmail.com> wrote:
> > > > Hi,
>
> > > > I'm trying to implement async http in java. Here is the important
> > > > part of the code:
>
> > > > for (String urlString : urls)
> > > > {
> > > > // TODO: try and get rid of these two
> > heap
> > > > allocations
> > > > url = new URL(urlString);
> > > > request = new HTTPRequest(url);
> > > > request.addHeader(userAgentHeader);
> > > > request.addHeader(authorizationHeader);
> > > > request.addHeader(acceptEncodingHeader);
> > > > request.addHeader(acceptCharsetHeader);
>
> > responses.add(URLFetchServiceFactory.getURLFetchService().fetchAsync(reques
> > t));
> > > > apiCallsMade++;
> > > > }
> > > > for (Future futureResponse :
> > > > responses)
> > > > {
> > > > parseResponse(new
> > > > String(futureResponse.get().getContent()));
> > > > }
>
> > > > I keep getting this error: "com.google.apphosting.api.ApiProxy
> > > > $CallNotFoundException: The API package 'urlfetch' or call 'Fetch()'
> > > > was not found.". I looked around for any jars
[google-appengine] Re: implementing asynchronous http in java
weird, I get the same error even when I pin objects and call urlfetch
synchronously:
url = new URL(urlString);
request = new HTTPRequest(url);
request.addHeader(userAgentHeader);
request.addHeader(authorizationHeader);
request.addHeader(acceptEncodingHeader);
request.addHeader(acceptCharsetHeader);
// undo pinning after debug
HTTPResponse response =
urlFetchService.fetch(request);
byte[] responseBytes = response.getContent();
String responseString = new
String(responseBytes);
parseResponse(responseString);
apiCallsMade++;
On Feb 19, 7:33 am, Conor Power wrote:
> apologies if I'm a little vague in my reply but I remember receiving
> something similar when I first started using the URLFetchService and I think
> it was related to the fact that I had imported the incorrect classes for
> HTTPRequest or header or something like like. I think I just chose the first
> one offered to me by the IDE ...
>
> It was a while ago so I hope I'm not sending you on a wild goose chase.
>
> On Fri, Feb 19, 2010 at 4:52 AM, davidnelson <
>
>
>
> david.jonathan.nel...@gmail.com> wrote:
> > Hi,
>
> > I'm trying to implement async http in java. Here is the important
> > part of the code:
>
> > for (String urlString : urls)
> > {
> > // TODO: try and get rid of these two heap
> > allocations
> > url = new URL(urlString);
> > request = new HTTPRequest(url);
> > request.addHeader(userAgentHeader);
> > request.addHeader(authorizationHeader);
> > request.addHeader(acceptEncodingHeader);
> > request.addHeader(acceptCharsetHeader);
>
> > responses.add(URLFetchServiceFactory.getURLFetchService().fetchAsync(reques
> > t));
> > apiCallsMade++;
> > }
> > for (Future futureResponse :
> > responses)
> > {
> > parseResponse(new
> > String(futureResponse.get().getContent()));
> > }
>
> > I keep getting this error: "com.google.apphosting.api.ApiProxy
> > $CallNotFoundException: The API package 'urlfetch' or call 'Fetch()'
> > was not found.". I looked around for any jars that were missing from
> > the classpath but didn't see anything missing. Do you know which jar
> > that code is in? I googled the error and also searched through this
> > group but found nothing.
>
> > Thanks,
> > David
>
> > --
> > You received this message because you are subscribed to the Google Groups
> > "Google App Engine" group.
> > To post to this group, send email to google-appeng...@googlegroups.com.
> > To unsubscribe from this group, send email to
> > google-appengine+unsubscr...@googlegroups.com > e...@googlegroups.com>
> > .
> > For more options, visit this group at
> >http://groups.google.com/group/google-appengine?hl=en.
--
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[google-appengine] Re: implementing asynchronous http in java
guess I'll post on stackoverflow...
On Feb 19, 7:33 am, Conor Power wrote:
> apologies if I'm a little vague in my reply but I remember receiving
> something similar when I first started using the URLFetchService and I think
> it was related to the fact that I had imported the incorrect classes for
> HTTPRequest or header or something like like. I think I just chose the first
> one offered to me by the IDE ...
>
> It was a while ago so I hope I'm not sending you on a wild goose chase.
>
> On Fri, Feb 19, 2010 at 4:52 AM, davidnelson <
>
>
>
> david.jonathan.nel...@gmail.com> wrote:
> > Hi,
>
> > I'm trying to implement async http in java. Here is the important
> > part of the code:
>
> > for (String urlString : urls)
> > {
> > // TODO: try and get rid of these two heap
> > allocations
> > url = new URL(urlString);
> > request = new HTTPRequest(url);
> > request.addHeader(userAgentHeader);
> > request.addHeader(authorizationHeader);
> > request.addHeader(acceptEncodingHeader);
> > request.addHeader(acceptCharsetHeader);
>
> > responses.add(URLFetchServiceFactory.getURLFetchService().fetchAsync(reques
> > t));
> > apiCallsMade++;
> > }
> > for (Future futureResponse :
> > responses)
> > {
> > parseResponse(new
> > String(futureResponse.get().getContent()));
> > }
>
> > I keep getting this error: "com.google.apphosting.api.ApiProxy
> > $CallNotFoundException: The API package 'urlfetch' or call 'Fetch()'
> > was not found.". I looked around for any jars that were missing from
> > the classpath but didn't see anything missing. Do you know which jar
> > that code is in? I googled the error and also searched through this
> > group but found nothing.
>
> > Thanks,
> > David
>
> > --
> > You received this message because you are subscribed to the Google Groups
> > "Google App Engine" group.
> > To post to this group, send email to google-appeng...@googlegroups.com.
> > To unsubscribe from this group, send email to
> > google-appengine+unsubscr...@googlegroups.com > e...@googlegroups.com>
> > .
> > For more options, visit this group at
> >http://groups.google.com/group/google-appengine?hl=en.
--
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[google-appengine] Re: implementing asynchronous http in java
Thanks Conor,
I tried a "brute force" approach of just importing the whole
namespace:
import com.google.appengine.api.urlfetch.*;
Still get the error :-(
Thanks,
David
On Feb 19, 7:33 am, Conor Power wrote:
> apologies if I'm a little vague in my reply but I remember receiving
> something similar when I first started using the URLFetchService and I think
> it was related to the fact that I had imported the incorrect classes for
> HTTPRequest or header or something like like. I think I just chose the first
> one offered to me by the IDE ...
>
> It was a while ago so I hope I'm not sending you on a wild goose chase.
>
> On Fri, Feb 19, 2010 at 4:52 AM, davidnelson <
>
>
>
> david.jonathan.nel...@gmail.com> wrote:
> > Hi,
>
> > I'm trying to implement async http in java. Here is the important
> > part of the code:
>
> > for (String urlString : urls)
> > {
> > // TODO: try and get rid of these two heap
> > allocations
> > url = new URL(urlString);
> > request = new HTTPRequest(url);
> > request.addHeader(userAgentHeader);
> > request.addHeader(authorizationHeader);
> > request.addHeader(acceptEncodingHeader);
> > request.addHeader(acceptCharsetHeader);
>
> > responses.add(URLFetchServiceFactory.getURLFetchService().fetchAsync(reques
> > t));
> > apiCallsMade++;
> > }
> > for (Future futureResponse :
> > responses)
> > {
> > parseResponse(new
> > String(futureResponse.get().getContent()));
> > }
>
> > I keep getting this error: "com.google.apphosting.api.ApiProxy
> > $CallNotFoundException: The API package 'urlfetch' or call 'Fetch()'
> > was not found.". I looked around for any jars that were missing from
> > the classpath but didn't see anything missing. Do you know which jar
> > that code is in? I googled the error and also searched through this
> > group but found nothing.
>
> > Thanks,
> > David
>
> > --
> > You received this message because you are subscribed to the Google Groups
> > "Google App Engine" group.
> > To post to this group, send email to google-appeng...@googlegroups.com.
> > To unsubscribe from this group, send email to
> > google-appengine+unsubscr...@googlegroups.com > e...@googlegroups.com>
> > .
> > For more options, visit this group at
> >http://groups.google.com/group/google-appengine?hl=en.
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[google-appengine] implementing asynchronous http in java
Hi,
I'm trying to implement async http in java. Here is the important
part of the code:
for (String urlString : urls)
{
// TODO: try and get rid of these two heap
allocations
url = new URL(urlString);
request = new HTTPRequest(url);
request.addHeader(userAgentHeader);
request.addHeader(authorizationHeader);
request.addHeader(acceptEncodingHeader);
request.addHeader(acceptCharsetHeader);
responses.add(URLFetchServiceFactory.getURLFetchService().fetchAsync(request));
apiCallsMade++;
}
for (Future futureResponse : responses)
{
parseResponse(new
String(futureResponse.get().getContent()));
}
I keep getting this error: "com.google.apphosting.api.ApiProxy
$CallNotFoundException: The API package 'urlfetch' or call 'Fetch()'
was not found.". I looked around for any jars that were missing from
the classpath but didn't see anything missing. Do you know which jar
that code is in? I googled the error and also searched through this
group but found nothing.
Thanks,
David
--
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