Re: HTTP response as XML
Thank you David. I think I will forward to xml directly from my Action class Konstantina - Original Message - From: David Graham [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, April 03, 2003 6:06 PM Subject: Re: HTTP response as XML It is possible. It's commonly referred to as XML over HTTP. HTTP is the protocol or language that clients and servers speak and XML, HTML, GIFs, JPEGs, etc. can be delivered over that protocol. HTTP responses set a Content-Type header like Content-Type: text/html or Content-Type: text/xml in your case. There are JSTL tags that generate XML in JSPs or you can generate the XML in an Action and send it back. David From: Konstantina Stamopoulou [EMAIL PROTECTED] Reply-To: Struts Users Mailing List [EMAIL PROTECTED] To: Struts Users Mailing List [EMAIL PROTECTED] Subject: HTTP response as XML Date: Thu, 3 Apr 2003 17:25:09 +0300 Hello everyone, I have been using STruts for a while and it has solved a lot of my previous problems for example having long .jsps that included all the logic. Now I have been asked to use struts, which will receive the requst and will generate .xml instead of html as a response. This .xml will be parsed by another application. First of all is this possible? Make an http requset which will be handled by struts which will return xml code? If yes how is this possible? Do I have to implement my own custom tags? Has anyone implemented something similar? An xml file that I might generate will have the following form: ipg width=600 height=480 img=background.jpg navigation left=20 top=20 width=200 height=300 button top=0 width=200 height=50 img=background.jpg txt=Live TV action=TVCatalog target=displayarea/ button top=100 width=200 height=50 img=background.jpg txt=E-mail action=showEmail target=displayarea/ button top=200 width=200 height=50 img=background.jpg txt=Music action=musicCatalog target=displayarea/ /navigation img left=400 align=right img=background.jpg/ banner top=400 width=640 font=verdana size=40pt color=white bgcolor=transparent href=http://www.news.com; /banner block left=250 top=200 width=260 height=200 name=displayareaThis is a test. /block /ipg I could use any available help! Thank U in advance! Konstantina _ STOP MORE SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
re: HTTP response as XML
You might want to look at the digester for this. It is very good at converting JavaBeans to XML and back. See the RSS package for an example. http://jakarta.apache.org/commons/digester/api/org/apache/commons/digester/rss/package-frame.html You can then do your response up as a JavaBean, have the Digester convert that to XML, return XML as the response just as you would from a servlet (and return null to the Struts controller). From what you said, there's little reason to get a page involved, since the output is going to another application. -Ted. -- Ted Husted, Struts in Action http://husted.com/struts/book.html - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: HTTP response as XML
Hello Ted, You might want to look at the digester for this. It is very good at converting JavaBeans to XML and back. See the RSS package for an example. http://jakarta.apache.org/commons/digester/api/org/apache/commons/digester/r ss/package-frame.html I'm aware of Digester but I haven't used it to lean in details its functionality. I think it is time to do so. You can then do your response up as a JavaBean, have the Digester convert that to XML, return XML as the response just as you would from a servlet (and return null to the Struts controller). You mean that in my Action class I will write return (new ActionForward(null)) and I will use the PrintWriter to send the response? Shouldn't I do the following -- return (new ActionForward(my.xml)) where .xml is the file constructed in the Action class. From what you said, there's little reason to get a page involved, since the output is going to another application. Exactly! -Ted. Thank you! - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: HTTP response as XML
You mean that in my Action class I will write return (new ActionForward(null)) and I will use the PrintWriter to send the response? Shouldn't I do the following -- return (new ActionForward(my.xml)) where .xml is the file constructed in the Action class. You would say return null; at the end of your action and use the PrintWriter to write the response yourself. Your XML output does not have to be saved to a file before you send it, you can write it directly to the client. From what you said, there's little reason to get a page involved, since the output is going to another application. Well, you could use a JSP with JSTL tags to generate the XML but you don't have too. David _ Tired of spam? Get advanced junk mail protection with MSN 8. http://join.msn.com/?page=features/junkmail - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
re: HTTP response as XML
On Fri, 4 Apr 2003, Ted Husted wrote: Date: Fri, 04 Apr 2003 09:19:25 -0500 From: Ted Husted [EMAIL PROTECTED] Reply-To: Struts Users Mailing List [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: re: HTTP response as XML You might want to look at the digester for this. It is very good at converting JavaBeans to XML and back. See the RSS package for an example. http://jakarta.apache.org/commons/digester/api/org/apache/commons/digester/rss/package-frame.html You can then do your response up as a JavaBean, have the Digester convert that to XML, return XML as the response just as you would from a servlet (and return null to the Struts controller). Digester is pretty good at XML-Java, but doesn't really help do Java-XML. However, a sibling Commons project called betwixt does a pretty nice job of that. From what you said, there's little reason to get a page involved, since the output is going to another application. The discussed solutions for generating XML directly from your Action are all viable. However, if you are doing the XML in a fixed output format and just need to insert dynamic data, one thing to consider is to use a JSP page that outputs XML, and use the usual Struts tags for the dynamic stuff -- say, something like this to generate a customer list: %@ page contentType=text/xml % %@ taglib prefix=bean uri=... % %@ taglib prefix=logic uri=... % customers logic:iterate id=customer name=customerList account-number bean:write name=customer property=accontId/ /account-number namebean:write name=customer property=name//name ... /logic:iterate /customers This works best for simple RPC type environments where the output format is relatively uncomplicated -- for something like a SOAP response, I'd definitely use software that knows how to do all the headers and envelope things. -Ted. Craig - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: HTTP response as XML
It is possible. It's commonly referred to as XML over HTTP. HTTP is the protocol or language that clients and servers speak and XML, HTML, GIFs, JPEGs, etc. can be delivered over that protocol. HTTP responses set a Content-Type header like Content-Type: text/html or Content-Type: text/xml in your case. There are JSTL tags that generate XML in JSPs or you can generate the XML in an Action and send it back. David From: Konstantina Stamopoulou [EMAIL PROTECTED] Reply-To: Struts Users Mailing List [EMAIL PROTECTED] To: Struts Users Mailing List [EMAIL PROTECTED] Subject: HTTP response as XML Date: Thu, 3 Apr 2003 17:25:09 +0300 Hello everyone, I have been using STruts for a while and it has solved a lot of my previous problems for example having long .jsps that included all the logic. Now I have been asked to use struts, which will receive the requst and will generate .xml instead of html as a response. This .xml will be parsed by another application. First of all is this possible? Make an http requset which will be handled by struts which will return xml code? If yes how is this possible? Do I have to implement my own custom tags? Has anyone implemented something similar? An xml file that I might generate will have the following form: ipg width=600 height=480 img=background.jpg navigation left=20 top=20 width=200 height=300 button top=0 width=200 height=50 img=background.jpg txt=Live TV action=TVCatalog target=displayarea/ button top=100 width=200 height=50 img=background.jpg txt=E-mail action=showEmail target=displayarea/ button top=200 width=200 height=50 img=background.jpg txt=Music action=musicCatalog target=displayarea/ /navigation img left=400 align=right img=background.jpg/ banner top=400 width=640 font=verdana size=40pt color=white bgcolor=transparent href=http://www.news.com; /banner block left=250 top=200 width=260 height=200 name=displayareaThis is a test. /block /ipg I could use any available help! Thank U in advance! Konstantina _ STOP MORE SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
