How to make a HTTP Post request to a remote server ?

Question

Hi Guys,
I'm new to java technology. I've a small problem with my code. All i need is to send a request to the remote server whose control is not at all in my hands with the POST method, which includes few of the parameters along with one of them is a xml formatted variable. The result of this request is an xml generated out which i want to fetch in my jsp code. I've tried it with the HTTPUrlConnection method and code for the same is below :
<%
try {
String xmlString = "<FARES><AGENCY_ID>TFI</AGENCY_ID><DEP_CITY>NYC</DEP_CITY><ARR_CITY>LON</ARR_CITY><DEP_DATE>12</DEP_DATE><DEP_MONTH>DEC</DEP_MONTH><OWRT>RT</OWRT></FARES>";
URL url = new URL("http://www.lowestairprice.com/Canada/mars.asp?WCI=Start&WCE=XMLFARES&reqMsg=Yes&");
HttpURLConnection con = (HttpURLConnection)url.openConnection();
con.setInstanceFollowRedirects(true);
con.setFollowRedirects(true);
con.setRequestMethod("POST");
con.setDoOutput(true);
out.println("Testing...");
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(con.getOutputStream()));
bw.write("xmltekst=" + xmlString);
bw.flush();
bw.close();
BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream()));
String line = br.readLine();
String result ="";
while (line !=null) {
result += line;
line = br.readLine();
br.close();
out.println("Resultat: " + result);
} catch(Exception exc) {
exc.printStackTrace();
out.println(exc);
%>
But when i run this on browser it gives me the following error.
java.net.MalformedURLException: unknown protocol: https
Now the response they provide is thrown back with the https protocol instead of the http. How can i fetch their response in my jsp code and store it in a local variable.
If anybody can help me out in this, i would be thankful for the same.
Thanking You,
Rgds,
Gaurav
(Software Engineer)
Ultra Infotech.

Answer 1

Have you tried to use HttpsURLConnection instead ?