How to receive XML from Flex HTTP POST

Question

Hi,
We curreontly have a setup where we have a FLEX frontend send an XML through a HTTP POST and awaiting a response also in XML. On the backend this is handled relatively simply by a PHP script that basically does the following:
read data (in XML)from FlEX HTTP POST into a new temp XML file.
execute a c++ program with the XML file as one of the parameter.
return the result to FLEX
We have decided to move to BlazeDS for various reasons.
Looking at the examples bundled with BlazeDS they have a jsp example that returns an XML result to FLEX so that part is fine. I am trying to find an example of JSP (or Servlet) that is able to read the XML data from FLEX and write it into a temp XML file. I would then try to use runtime.exec to invoke a local C++ program to process the XML file the result of which will be sent back to FLEX.
Any help will be very much appreciated!

Answer 1

<div class=Section1><br /><br /><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";<br />color:#1F497D'>I&#8217;d avoid calling an executable just to process XML &#8211;your<br />application server would provide enough support for reading and writing XML, no?<br />Also, if you&#8217;re only planning on working with XML then even BlazeDS might<br />be overkill because its focus is on sending strongly typed ActionScript data efficiently<br />to and from a client (it&#8217;s true that it does have a proxy service, but<br />that is not involved with processing the actual XML data).<o:p></o:p></span></p><br /><br /><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";<br />color:#1F497D'><o:p> </o:p></span></p><br /><br /><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";<br />color:#1F497D'>How complex is your XML? Do you need to resolve ids and<br />references or can you parse it top down in a single pass? There are several<br />well known libraries in Java for dealing with XML &#8211; the choice depends on<br />how you need to interact with the XML. Most of them take an InputStream as a<br />source for reading XML and you can get the InputStream from the servlet<br />request. Googling should turn up numerous examples.<o:p></o:p></span></p><br /><br /><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";<br />color:#1F497D'><o:p> </o:p></span></p><br /><br /><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";<br />color:#1F497D'>Pete<o:p></o:p></span></p><br /><br /><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";<br />color:#1F497D'><o:p> </o:p></span></p><br /><br /><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";<br />color:#1F497D'><o:p> </o:p></span></p><br /><br /><div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><br /><br /><div><br /><br /><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><br /><br /><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span<br />style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> khwong<br />[mailto:[email protected]] <br><br /><b>Sent:</b> Sunday, September 28, 2008 12:09 PM<br><br /><b>To:</b> [email protected]<br><br /><b>Subject:</b> How to receive XML from Flex HTTP POST<o:p></o:p></span></p><br /><br /></div><br /><br /></div><br /><br /><p class=MsoNormal><o:p> </o:p></p><br /><br /><p class=MsoNormal style='margin-bottom:12.0pt'>A new discussion was started by<br />khwong in <br><br /><br><br /><b>General Discussion</b> --<br><br />  How to receive XML from Flex HTTP POST<br><br /><br><br />Hi, <br><br /><br><br />We curreontly have a setup where we have a FLEX frontend send an XML through a<br />HTTP POST and awaiting a response also in XML. On the backend this is handled<br />relatively simply by a PHP script that basically does the following: <br><br /><br><br />read data (in XML)from FlEX HTTP POST into a new temp XML file. <br><br />execute a c++ program with the XML file as one of the parameter. <br><br />return the result to FLEX <br><br /><br><br />We have decided to move to BlazeDS for various reasons. <br><br /><br><br />Looking at the examples bundled with BlazeDS they have a jsp example that<br />returns an XML result to FLEX so that part is fine. I am trying to find an<br />example of JSP (or Servlet) that is able to read the XML data from FLEX and<br />write it into a temp XML file. I would then try to use runtime.exec to invoke a<br />local C++ program to process the XML file the result of which will be sent back<br />to FLEX. <br><br /><br><br />Any help will be very much appreciated! <o:p></o:p></p><br /><br /><div class=MsoNormal><br /><br /><hr size=2 width=200 style='width:150.0pt' align=left><br /><br /></div><br /><br /><p class=MsoNormal style='margin-bottom:12.0pt'>View/reply at <a<br />href="http://www.adobeforums.com/webx?13@@.59b69b23">How to receive XML from<br />Flex HTTP POST</a><br><br />Replies by email are OK.<br><br />Use the <a<br />href="http://www.adobeforums.com/webx?280@@.59b69b23!folder=.3c061a83">unsubscribe</a>< br />form to cancel your email subscription.<o:p></o:p></p><br /><br /></div><br /><br /></div>