access to mediator out of java application

,
1

hi Fan’s

i am looking for an example showing the call/HTTP post of a mediator sequence out of a java application/servlet using for example the Apache Jakarta HTTPClient.

thansk in advance

Michael

2

Here is some basic standard java to make an HTTP POST request.
If you need to call Mediator from a Servlet, you may consider writing a servlet
filter (deployed on the Mediator’s ServletPortal servlet) instead of a servlet.

/
** necessary imports
/
import java.net.;
import java.io.;
import java.net.HttpURLConnection.;
…
…
/
** some convenience variables
/
String xml = “some xml”;
String prtl = “http://localhost:8081/mediator/ServletPortal”;
String seq = “?xbd.sequence.uri=http://localhost:8081/test/sequences/test.xml”
/
** set up the HTTP connection
/
URL u = new URL(prtl + seq);
HttpURLConnection conn = (HttpURLConnection)u.openConnection();
conn.setRequestProperty(“Content-Type”,“text/xml; charset=utf-8”);
conn.setDoOutput(true);
conn.setDoInput(true);
/
** send data to Mediator
/
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(conn.getOutputStream()));
bw.write(xml);
bw.close();
/
** read response from Mediator
*/
BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String inputLine;
while((inputLine = br.readLine()) != null){
System.out.println(inputLine);
}
br.close();

3

dear Arp,

first of all thanks for the code part. coming back to this now, i have just one question:
assuming i am building a xml document using the dom model and then i like to post this document to the mediator what is the best and efficient way?
do i have to serialise this document first, so i can use a stream reader or is there a way out to avoid the serialisation process.

thanks

Michael

4

I think one popular way is to use a transformer to parse and output your document to whatever target you need. In your case your output target will the OutputStream you get from the HTTPUrlConnection object:

import javax.xml.transform.*;


Transformer t = TransformerFactory.newInstance().newTransformer();
DOMSource d = new DOMSource(some NODE);
StreamResult s = new StreamResult(conn.getOutputStream());
t.transform(d,s);

I will let the DOM/SAX gurus give you the final word on this, however.