Re: [flexcoders] Re: Calling Java Servlet
The fact that RemoteObject uses a servlet is an
implementation detail. You can see that it is by
looking at the [FLEX_APP]/WEB-INF/web.xml file in your
Flex application. It is the servlet named
AMFGatewayServlet.
With regard to your problem, depending on how your
code is factored, you may be able to use RemoteObject
out of the box. Typically you would surface a remote
object that provided a service In your case you
could create a Java object called JavaBeanService (or
whatever) and expose a method on it that returned all
your java beans.
The point here is that you don't need to muck around
with HTTP level stuff as is the case with your
servlet. Flex handles that using Flash remoting.
good luck,
~harris
--- Libby [EMAIL PROTECTED] wrote:
Well, my custom servlet already exists. I have read
all I can find on
RemoteObject and have not discovered any mention of
servlet, either
mine or flex's. Could you tell me exactly where you
are looking to get
your info?
Thanks,
Libby
--- In flexcoders@yahoogroups.com, Harris Reynolds
[EMAIL PROTECTED]
wrote:
Libby,
It is definitely possible to invoke a servlet from
Flex b/c I have done it successfully. If you
invoke a
custom servlet though, the burden is on you to
return
data in a format that Flex can understand.
I guess I am wondering why you want to invoke a
custom
servlet; it seems like you should be invoking the
remoting gateway servlet that ships with Flex and
automatically handles data (un)marshalling of java
objects for you. See the RemoteObject component
for
more information.
good luck,
~harris
--- Libby [EMAIL PROTECTED] wrote:
No, I'm returning an array of javabeans. At this
point I am wondering
if it is even possible to call a servlet from
Flex
since they don't
have an example of doing it. I have successfully
invoked some other
java objects, but not servlets so far.
--- In flexcoders@yahoogroups.com, Harris
Reynolds
[EMAIL PROTECTED]
wrote:
Libby,
If you are returning a chunck of XML one
simple
option
is to call your servlet using the HTTPService
Flex
control. Using this approach you can attach
the
result to a data provide and Flex will wire it
all
up
for you. An example of this can be found here
[1].
It uses a JSP page instead of a servlet, but
the
concept is the same.
Hope this helps,
~harris
[1]
http://flexapps.macromedia.com/flex15/explorer/explorer.mxml
(See Dynamic Data Services - HTTP Service)
--- Libby [EMAIL PROTECTED] wrote:
Hello,
I am evaluating Flex. We have flash Remoting
calling
some servlets
running on Websphere 5.1, and for my eval I
am
trying to build a
similiar interface to them. So far I cannot
find
an
example of how to
do this (call a servlet with arguments) so I
was
hoping someone here
could show me a tiny example, or offer
corrections
to my code?
Using flash, we call a controller servlet
using
one
or more arguments.
ItemDefServlet(getAllRecords); -- like
this
in
Flash
In Flex, this is what I have:
mx:RemoteObject type=servlet
source=maintenance.ItemDefServlet
protocol=http
id=remoteobject1/mx:RemoteObject
mx:DataGrid id=ItemDef_grd
dataProvider={remoteobject2.getMessage.result}
.
.
/mx:DataGrid
mx:ControlBar
mx:Button label=Get All
click=remoteobject1.send() /
/mx:ControlBar
thanks,
Libby
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RE: [flexcoders] Re: Calling Java Servlet
Libby -
I think this is possible but haven't tried it myself.
Here's some information which should set you down the right path. Good
luck!
I've seen examples for the Flex 1.0 session servlet [Replaced in Flex
1.5 with new session access but not relevant to this discussion.]
http://www.macromedia.com/devnet/flex/articles/flex_portals/flex_portals
_whitepaper.pdf
'Accessing the portlet session' - Again, you would be accessing your
servlet instead of the 'session' servlet.
http://www.macromedia.com/cfusion/knowledgebase/index.cfm?id=97b1769b
Troubleshooting for the session servlet which would be relevant in your
case as well.
mx:RemoteObject source=servlet id=remoteobject1 protocol=http/
// cmurphy - the source should always be servlet
mx:Button label=Get All
click=remoteobject1.yourServletName('yourServletArg1',
'yourServletArg2') /
Instead of specifying the class name of you're servlet directly, map
yourServletName to the class name of the servlet in web.xml.
- Cathy
http://flexapps.macromedia.com/flex15/explorer/explorer.mxml
--- Libby [EMAIL PROTECTED] wrote:
Hello,
I am evaluating Flex. We have flash Remoting
calling
some servlets
running on Websphere 5.1, and for my eval I
am
trying to build a
similiar interface to them. So far I cannot
find
an
example of how to
do this (call a servlet with arguments) so I
was
hoping someone here
could show me a tiny example, or offer
corrections
to my code?
Using flash, we call a controller servlet
using
one
or more arguments.
ItemDefServlet(getAllRecords); -- like
this
in
Flash
In Flex, this is what I have:
mx:RemoteObject type=servlet
source=maintenance.ItemDefServlet
protocol=http
id=remoteobject1/mx:RemoteObject
mx:DataGrid id=ItemDef_grd
dataProvider={remoteobject2.getMessage.result}
.
.
/mx:DataGrid
mx:ControlBar
mx:Button label=Get All
click=remoteobject1.send() /
/mx:ControlBar
thanks,
Libby
__
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Yahoo! Small Business - Try our new resources
site!
http://smallbusiness.yahoo.com/resources/
__
Do you Yahoo!?
Yahoo! Small Business - Try our new resources
site!
http://smallbusiness.yahoo.com/resources/
__
Do you Yahoo!?
Yahoo! Small Business - Try our new resources site!
http://smallbusiness.yahoo.com/resources/
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Yahoo! Groups Links
* To visit your group on the web, go to:
http://groups.yahoo.com/group/flexcoders/
* To unsubscribe from this group, send an email to:
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RE: [flexcoders] Re: Calling Java Servlet
Hi Libby, You can invoke a servlet, but it's really a deprecated method of contacting the server from Flash Remoting. It's not a preferred method as the servicename.functioname() invocation isn't as straight forward as a plain old java object classname.methodname() idea. For a servlet invocation, the service name is the context root of the web application that holds your servlet. The function name is the servlet name (as your servlet is contacted via a ServletContext.getNamedDispatcher(...)). Parameters are send in a FLASH.PARAMS request attribute so that you can get access to them in your servlet. The result from your servlet can be set as the FLASH.RESULT request attribute. The main reason why people used servlets in Flash Remoting MX was to get access to the HttpServletRequest (and hence the session), and HttpServletResponse. You can do this in Flex 1.5 from your plain old java objects by calling the static accessors to some thread local variables on the Gateway class: flashgateway.Gateway public static HttpServletRequest getHttpRequest() public static HttpServletResponse getHttpResponse() public static ServletConfig getServletConfig() Rgds, Pete Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/flexcoders/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[flexcoders] Re: Calling Java Servlet
No, I'm returning an array of javabeans. At this point I am wondering
if it is even possible to call a servlet from Flex since they don't
have an example of doing it. I have successfully invoked some other
java objects, but not servlets so far.
--- In flexcoders@yahoogroups.com, Harris Reynolds [EMAIL PROTECTED]
wrote:
Libby,
If you are returning a chunck of XML one simple option
is to call your servlet using the HTTPService Flex
control. Using this approach you can attach the
result to a data provide and Flex will wire it all up
for you. An example of this can be found here [1].
It uses a JSP page instead of a servlet, but the
concept is the same.
Hope this helps,
~harris
[1]
http://flexapps.macromedia.com/flex15/explorer/explorer.mxml
(See Dynamic Data Services - HTTP Service)
--- Libby [EMAIL PROTECTED] wrote:
Hello,
I am evaluating Flex. We have flash Remoting calling
some servlets
running on Websphere 5.1, and for my eval I am
trying to build a
similiar interface to them. So far I cannot find an
example of how to
do this (call a servlet with arguments) so I was
hoping someone here
could show me a tiny example, or offer corrections
to my code?
Using flash, we call a controller servlet using one
or more arguments.
ItemDefServlet(getAllRecords); -- like this in
Flash
In Flex, this is what I have:
mx:RemoteObject type=servlet
source=maintenance.ItemDefServlet
protocol=http
id=remoteobject1/mx:RemoteObject
mx:DataGrid id=ItemDef_grd
dataProvider={remoteobject2.getMessage.result}
.
.
/mx:DataGrid
mx:ControlBar
mx:Button label=Get All
click=remoteobject1.send() /
/mx:ControlBar
thanks,
Libby
__
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Yahoo! Groups Links
* To visit your group on the web, go to:
http://groups.yahoo.com/group/flexcoders/
* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
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Re: [flexcoders] Re: Calling Java Servlet
Libby,
It is definitely possible to invoke a servlet from
Flex b/c I have done it successfully. If you invoke a
custom servlet though, the burden is on you to return
data in a format that Flex can understand.
I guess I am wondering why you want to invoke a custom
servlet; it seems like you should be invoking the
remoting gateway servlet that ships with Flex and
automatically handles data (un)marshalling of java
objects for you. See the RemoteObject component for
more information.
good luck,
~harris
--- Libby [EMAIL PROTECTED] wrote:
No, I'm returning an array of javabeans. At this
point I am wondering
if it is even possible to call a servlet from Flex
since they don't
have an example of doing it. I have successfully
invoked some other
java objects, but not servlets so far.
--- In flexcoders@yahoogroups.com, Harris Reynolds
[EMAIL PROTECTED]
wrote:
Libby,
If you are returning a chunck of XML one simple
option
is to call your servlet using the HTTPService Flex
control. Using this approach you can attach the
result to a data provide and Flex will wire it all
up
for you. An example of this can be found here
[1].
It uses a JSP page instead of a servlet, but the
concept is the same.
Hope this helps,
~harris
[1]
http://flexapps.macromedia.com/flex15/explorer/explorer.mxml
(See Dynamic Data Services - HTTP Service)
--- Libby [EMAIL PROTECTED] wrote:
Hello,
I am evaluating Flex. We have flash Remoting
calling
some servlets
running on Websphere 5.1, and for my eval I am
trying to build a
similiar interface to them. So far I cannot find
an
example of how to
do this (call a servlet with arguments) so I was
hoping someone here
could show me a tiny example, or offer
corrections
to my code?
Using flash, we call a controller servlet using
one
or more arguments.
ItemDefServlet(getAllRecords); -- like this
in
Flash
In Flex, this is what I have:
mx:RemoteObject type=servlet
source=maintenance.ItemDefServlet
protocol=http
id=remoteobject1/mx:RemoteObject
mx:DataGrid id=ItemDef_grd
dataProvider={remoteobject2.getMessage.result}
.
.
/mx:DataGrid
mx:ControlBar
mx:Button label=Get All
click=remoteobject1.send() /
/mx:ControlBar
thanks,
Libby
__
Do you Yahoo!?
Yahoo! Small Business - Try our new resources
site!
http://smallbusiness.yahoo.com/resources/
__
Do you Yahoo!?
Yahoo! Small Business - Try our new resources site!
http://smallbusiness.yahoo.com/resources/
Yahoo! Groups Links
* To visit your group on the web, go to:
http://groups.yahoo.com/group/flexcoders/
* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
* Your use of Yahoo! Groups is subject to:
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[flexcoders] Re: Calling Java Servlet
Well, my custom servlet already exists. I have read all I can find on
RemoteObject and have not discovered any mention of servlet, either
mine or flex's. Could you tell me exactly where you are looking to get
your info?
Thanks,
Libby
--- In flexcoders@yahoogroups.com, Harris Reynolds [EMAIL PROTECTED]
wrote:
Libby,
It is definitely possible to invoke a servlet from
Flex b/c I have done it successfully. If you invoke a
custom servlet though, the burden is on you to return
data in a format that Flex can understand.
I guess I am wondering why you want to invoke a custom
servlet; it seems like you should be invoking the
remoting gateway servlet that ships with Flex and
automatically handles data (un)marshalling of java
objects for you. See the RemoteObject component for
more information.
good luck,
~harris
--- Libby [EMAIL PROTECTED] wrote:
No, I'm returning an array of javabeans. At this
point I am wondering
if it is even possible to call a servlet from Flex
since they don't
have an example of doing it. I have successfully
invoked some other
java objects, but not servlets so far.
--- In flexcoders@yahoogroups.com, Harris Reynolds
[EMAIL PROTECTED]
wrote:
Libby,
If you are returning a chunck of XML one simple
option
is to call your servlet using the HTTPService Flex
control. Using this approach you can attach the
result to a data provide and Flex will wire it all
up
for you. An example of this can be found here
[1].
It uses a JSP page instead of a servlet, but the
concept is the same.
Hope this helps,
~harris
[1]
http://flexapps.macromedia.com/flex15/explorer/explorer.mxml
(See Dynamic Data Services - HTTP Service)
--- Libby [EMAIL PROTECTED] wrote:
Hello,
I am evaluating Flex. We have flash Remoting
calling
some servlets
running on Websphere 5.1, and for my eval I am
trying to build a
similiar interface to them. So far I cannot find
an
example of how to
do this (call a servlet with arguments) so I was
hoping someone here
could show me a tiny example, or offer
corrections
to my code?
Using flash, we call a controller servlet using
one
or more arguments.
ItemDefServlet(getAllRecords); -- like this
in
Flash
In Flex, this is what I have:
mx:RemoteObject type=servlet
source=maintenance.ItemDefServlet
protocol=http
id=remoteobject1/mx:RemoteObject
mx:DataGrid id=ItemDef_grd
dataProvider={remoteobject2.getMessage.result}
.
.
/mx:DataGrid
mx:ControlBar
mx:Button label=Get All
click=remoteobject1.send() /
/mx:ControlBar
thanks,
Libby
__
Do you Yahoo!?
Yahoo! Small Business - Try our new resources
site!
http://smallbusiness.yahoo.com/resources/
__
Do you Yahoo!?
Yahoo! Small Business - Try our new resources site!
http://smallbusiness.yahoo.com/resources/
Yahoo! Groups Links
* To visit your group on the web, go to:
http://groups.yahoo.com/group/flexcoders/
* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
* Your use of Yahoo! Groups is subject to:
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