2 Replies Latest reply on May 2, 2009 7:17 AM by jadtn

How to submit jsf page from applet with HttpURLConnection

jadtn May 1, 2009 5:36 AM

Hi,
I want to submit a jsf form from an applet:

The jsf page:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
 xmlns:f="http://java.sun.com/jsf/core"
 xmlns:h="http://java.sun.com/jsf/html"
 xmlns:rich="http://richfaces.org/rich"
 xmlns:a4j="http://richfaces.org/a4j"
 xmlns:ui="http://java.sun.com/jsf/facelets"
 >
<head>

</head>
<body>
<f:view>
 <h:form id="chat">
 <h:inputText id="msg" value="#{ctrlChatSendMsg.msg}" />
 <h:commandButton id="send" action="#{ctrlChatSendMsg.send}" value="" />
 </h:form>
</f:view>
</body>
</html>

And the code from my applet :

HttpURLConnection connection = (HttpURLConnection) lorizonRead.openConnection();
 //HttpURLConnection connection =(HttpURLConnection) conLorizonRead;
 connection.setUseCaches(false);
 connection.setDoOutput(true);
 connection.setDoInput(true);
 connection.setRequestMethod("POST");
 connection.setRequestProperty("Content-Type",
 "application/x-www-form-urlencoded");
 String url="http://localhost:8080/testchat.jsf?"
 +URLEncoder.encode("chat")+"="+URLEncoder.encode("chat")
 +"&"+URLEncoder.encode("chat:msg")+"="+URLEncoder.encode("")
 +"&"+URLEncoder.encode("chat:send")+"=";
 DataOutputStream stream = new
 DataOutputStream(connection.getOutputStream ());
 stream.writeBytes(url);
 stream.flush();
 stream.close();

This is not work, i see in server log the session is created, but may back bean never called.
I found no example.
If i pass by a browser then the backbean is called. But from my applet nothing append expected a log that the server has created a session
Any body has idea of what is wrong in my applet?
Thanks!

1. Re: How to submit jsf page from applet with HttpURLConnectio

nbelaevski May 1, 2009 7:25 AM (in response to jadtn)

Hello,

JSF needs several service parameters to be passed to Faces Servlet. Check all form fields.
Actions

2. Re: How to submit jsf page from applet with HttpURLConnectio

jadtn May 2, 2009 7:17 AM (in response to jadtn)

Ok thanks i found :

1-First you need the jsessionid,if you don t have create a connexion :

private static final String REG_EXPR_JSESSIONID = "jsessionid=[^\"]+";
private static final String REG_EXPR_ACK="ackmsg[0-9]+";
 public static final Pattern patternSession = Pattern.compile(REG_EXPR_JSESSIONID);
public static String createSessionID(String jsfpath) throws MalformedURLException, IOException{
 URLConnection urlConnection = new URL(jsfpath).openConnection();
 urlConnection.setDoOutput(true);
 BufferedReader in = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));

 String jid =null;// catsession(in);
 String form=null;
 while ((form = in.readLine()) != null && jid==null){
 Matcher m = patternSession.matcher(form);
 if(m.find()){
 jid=m.group();
 }
 }
 in.close();
 return jid;

 }

2-send the request, becarefull at 2 things :
a) the url must contains the jsessionid like :http://localhost/mypage.jsf;jsessionid=XXXXX
b) pass the view state in request params like javax.faces.ViewState=j_id1
For me i already send j_id1 and i ve got the value when i call the page for the first time, you need to change it.

Map<String, String[]> params=new Hashtable<String, String[]>();
 params.put("chat", new String[]{"chat"});
 params.put("chat:msg", new String[]{"BRAVOOOOOOOOOOOOOOOOOO"});
 params.put("chat:send", new String[]{""});
 params.put("chat:msgid", new String[]{"464"});
 params.put("javax.faces.ViewState", new String[]{"j_id1"});

 InputStream is = doPost("http://localhost:8080/testchat.jsf;"+jsessionid, params);
 is.close();

I ve got the method doPost from here :
http://balusc.blogspot.com/2006/05/httpservletutil.html#doPost

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