Passing values from HTML to JSP method,

Hello:
I am starting to wonder if what I am doing will ever work...
Ok, I am trying to avoid javascript. I have a drop-down list named "year" and I wish to call a JSP method that is defined/declared in the same JSP.
First, I want to pass the chosen option to the method and then store the name/value in a global variable.
Second, depending on what the user selects, I will get values from an array defined/initialized on page load AND display those values in another drop-down list.
As a test, and until now, I have done this. I am not passing anything yet, I just wanted to test this "fuzzy logic" I am having:
<%!
String currentYear;
private void showDaysInDDList()
currentYear = request.getparameter("year");
%>
Then on the HTML part of the page I have a drop-down list:
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="style.css">
</head>
<body bgcolor="ffffcc">
<form method="POST" name="form1" action="left.jsp">
<select name="year" onchange="<%=showDaysInDDList()%>">
<option></option>
</select>
I am getting the following errors:
An error occurred at line: 105 in the jsp file: /p1/left.jsp
request cannot be resolved
....and regarding to the onchange="<%=showDaysInDDList()%>"> part I am getting the following:
An error occurred at line: 204 in the jsp file: /p1/left.jsp
The method print(boolean) in the type JspWriter is not applicable for the arguments (void)
In the action="left.jsp", left.jsp is the same page where the drop-down list and the method is. I am not sure if that is another error.
I will continue here with my coffee ... any help will be extremely appreciated !!..
I'll have to shut down my "asp.net mind" for a while..
I'll reply later,
MMS

Ok, this is a bit messy here. I don't know how much you've read up on JSP but you seem confused about some fundamentals to me. However, you mention that you've worked with ASP .net so I'm going to assume you do have some notion of how thing should work in general.
1. JSP is on the server-side and events like onchange that you've used take place on the client-side after the JSP/ servlet code has run and produced the HTML page. So calling your showDaysInDDList() will not work.
2. Are you sure you know how the declaration tags ( <%! %> ) work? When you normally write JSP code without these tags, all that code gets compiled into the service method of the corresponding servlet that the JSP gets turned into. But, you can declare your own methods and variables outside the service method by using these tags.
So what you're effectively doing is declaring
private String/ void showDaysInDDList()
}and followed by your usual _jspService()
public void _jspService(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException
}Now it may be clear, that the request object is not available in the showDaysInDDList() method by default; you'll either have to declare it ( not sure if it's good programming practice or not ) or pass the required parameters in the call.
3. Like you seem to have realized, that error about the printing of booleans was related to the return type of your method because <%= %> translates to out.println(); and since the argument was the method call, the return value was to be printed which here was a void ( not sure why it says boolean though :D ).
Read up on this introduction to JSPs http://java.sun.com/developer/onlineTraining/JSPIntro/contents.html, seems to be pretty good and covers everything in quick, short chunks.
Hope this helps.

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context....with forward you couldn't pass information
to jsps/servlets outside your own context.Actually, you can:
getServletContext().getContext("/other").getRequestDispatcher("/path/to/servlet").forward(request, response)I think the issue here is that the OP would like to have RequestDispatcher.forward() also update the address in the client's browser. That's not possible, AFAIK. By the time the request is forwarded, the browser has already determined the URL of the servlet, and the only I know of way to have the browser change the URL to the forwarded Servlet/JSP is to send a Location: header (i.e. sendRedirect()). Remember that server-side dispatching is transparent to the client. Maybe there's some tricky stuff you can do with JavaScript to change the address in the address bar without reloading the page?
Brian

Read values from html response

Hi,
I am trying to make a call to an API using UTL_HTTP POST method over SSL and read the response html page and extract the values from the reponse.
I am able to call and get a response back in html format. I have stored the html response in a clob variable.
Now i want to parse this html and extract values from the form input items and send them out through OUT parameters.
For example, from below reponse i want to extract the value '1111d7nhcwse30wq' from 'I4GO_UNIQUEID'
Can anyone help me with the code to parse this html response and extract the values.
Any help is greatly appreciated.
Thanks
Sharath
sample Code:
PROCEDURE get_token (
p_requesterreference IN VARCHAR2,
p_cardnumber IN VARCHAR2,
p_cardtype IN VARCHAR2,
p_cardholdername IN VARCHAR2,
p_expirationmonth IN VARCHAR2,
p_expirationyear IN VARCHAR2,
p_streetaddress IN VARCHAR2,
p_postalcode IN VARCHAR2,
p_cvv2code IN VARCHAR2,
po_uniqueid OUT VARCHAR2,
po_errorindicator OUT VARCHAR2,
po_primaryerrorcode OUT VARCHAR2,
po_response OUT VARCHAR2,
po_status_code OUT VARCHAR2,
po_reason_phrase OUT VARCHAR2
IS
v_url VARCHAR2 (200);
v_url_params VARCHAR2 (32767);
v_resp_str VARCHAR2 (32767);
l_http_req UTL_HTTP.req;
l_http_resp UTL_HTTP.resp;
v_requesterreference VARCHAR2 (12) := p_requesterreference;
v_i4go_cardnumber VARCHAR2 (32) := p_cardnumber;
v_i4go_streetaddress VARCHAR2 (30) := p_streetaddress;
v_i4go_postalcode VARCHAR2 (9) := p_postalcode;
v_i4go_expirationmonth VARCHAR2 (2) := p_expirationmonth; -- MM format
v_i4go_expirationyear VARCHAR2 (2) := p_expirationyear; -- yy format
v_i4go_cvv2code VARCHAR2 (3) := p_cvv2code;
v_name VARCHAR2 (256);
v_value VARCHAR2 (1024);
l_clob CLOB;
pv_amp CONSTANT CHAR (1) := CHR (38);
CURSOR setup_cur
IS
SELECT interface_id, interface_name, interface_url, account_id, site_id
FROM rsv.shift4_setup
WHERE interface_name = 'I4GO';
v_setup_rec setup_cur%ROWTYPE;
BEGIN
OPEN setup_cur;
FETCH setup_cur
INTO v_setup_rec;
CLOSE setup_cur;
v_url := 'https://certify.i4go.com//index.cfm?fuseaction=account.PostCardEntry';
v_url_params :=
pv_amp
|| 'i4GO_AccountID='
|| v_setup_rec.account_id
|| pv_amp
|| 'i4Go_SiteID='
|| v_setup_rec.site_id
|| pv_amp
|| 'i4Go_CardNumber='
|| v_i4go_cardnumber
|| pv_amp
|| 'i4Go_ExpirationMonth='
|| v_i4go_expirationmonth
|| pv_amp
|| 'i4Go_ExpirationYear='
|| v_i4go_expirationyear
|| pv_amp
|| 'i4Go_CVV2Code='
|| v_i4go_cvv2code
|| pv_amp
|| 'i4Go_PostalCode='
|| v_i4go_postalcode;
-- begin request using POST method
UTL_HTTP.set_response_error_check (FALSE);
UTL_HTTP.set_transfer_timeout (180);
UTL_HTTP.set_wallet ('file:/etc/ORACLE/WALLETS/oracle', 'welcome1');
l_http_req := UTL_HTTP.begin_request (v_url, 'POST');
UTL_HTTP.set_header (l_http_req, 'User-Agent', 'Mozilla/4.0');
UTL_HTTP.set_header (l_http_req, 'Content-Type', 'application/x-www-form-urlencoded');
UTL_HTTP.set_header (l_http_req, 'content-length', LENGTH (v_url_params));
UTL_HTTP.write_text (l_http_req, v_url_params);
-- get response
l_http_resp := UTL_HTTP.get_response (l_http_req);
po_status_code := l_http_resp.status_code;
po_reason_phrase := l_http_resp.reason_phrase;
-- read response into a clob
DBMS_LOB.createtemporary (l_clob, FALSE);
BEGIN
LOOP
UTL_HTTP.read_text (l_http_resp, v_resp_str, 32767);
DBMS_LOB.writeappend (l_clob, LENGTH (v_resp_str), v_resp_str);
END LOOP;
EXCEPTION
WHEN UTL_HTTP.end_of_body
THEN
-- end response
UTL_HTTP.end_response (l_http_resp);
END;
-- Fre resources
DBMS_LOB.freetemporary (l_clob);
EXCEPTION
WHEN OTHERS
THEN
DBMS_LOB.freetemporary (l_clob);
DBMS_OUTPUT.put_line (UTL_HTTP.get_detailed_sqlerrm);
RAISE;
END;
sample response:
<!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">
<head>
     <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
     <title>Return With Payment Token</title>
     <script src="js/jquery-1.6.4.min.js" type="text/javascript"></script>
     <script type="text/javascript"></script>
</head>
<body onload="bodyOnLoad();">
     <form name="i4GoMainForm" id="i4GoMainForm" action="http://google.com" method="POST" onsubmit="$('#i4Go_submit').attr('disabled','disabled');">
               <input name="I4GO_RESPONSE" type="hidden" value="SUCCESS" />
               <input name="I4GO_RESPONSECODE" type="hidden" value="1" />
               <input name="I4GO_CARDTYPE" type="hidden" value="VS" />
               <input name="I4GO_UNIQUEID" type="hidden" value="1111d7nhcwse30wq" />
               <input name="I4GO_EXPIRATIONMONTH" type="hidden" value="12" />
               <input name="I4GO_EXPIRATIONYEAR" type="hidden" value="2012" />
               <input name="I4GO_CARDHOLDERNAME" type="hidden" value="" />
               <input name="I4GO_STREETADDRESS" type="hidden" value="" />
               <input name="I4GO_POSTALCODE" type="hidden" value="65000" />
          <div id="scriptDiv" style="font-family:Arial, Helvetica, sans-serif;font-size:18px;visibility:hidden;">
               <img src="images/loading040.gif" alt="Spinner..." />  Loading...
          </div>
          <div id="noScriptDiv" style="font-family:Arial, Helvetica, sans-serif;">
               <noscript>
                                   <h1>Statement of Tokenization</h1>
                                   <p>The payment information you have submitted has been securely stored in the Shift4 PCI-DSS certified data center and a token representing this information will be sent to the merchant for processing. Below is the information that will be returning to the originating merchant:</p>
                                   <ul>
                                        <li>Response: <strong>SUCCESS</strong></li>
                                        <li>Response Code: <strong>1</strong></li>
                                        <li>Card Type: <strong>VS</strong></li>
                                        <li>Token: <strong>1111d7nhcwse30wq</strong></li>
                                   </ul>
               </noscript>
<input type="submit" name="i4Go_submit" id="i4Go_submit" value="Continue" />
          </div>
     </form>
</body>
</html>
Edited by: sgudipat on Apr 24, 2012 1:20 PM

Here is working example for your HTML using xpath to extract values from html
You can store your html response in clob variable and then extract the value with xpath
declare
   l_clob clob;
   l_value varchar2(100);
   l_xml xmltype;
begin
     l_clob :='<!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">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Return With Payment Token</title>
<script src="js/jquery-1.6.4.min.js" type="text/javascript"></script>
<script type="text/javascript"></script>
   </head>
   <body onload="bodyOnLoad();">
   <form name="i4GoMainForm" id="i4GoMainForm" action="http://google.com" method="POST" onsubmit="$(''#i4Go_submit'').attr(''disabled'',''disabled'');">
   <input name="I4GO_RESPONSE" type="hidden" value="SUCCESS" />
   <input name="I4GO_RESPONSECODE" type="hidden" value="1" />
   <input name="I4GO_CARDTYPE" type="hidden" value="VS" />
   <input name="I4GO_UNIQUEID" type="hidden" value="1111d7nhcwse30wq" />
   <input name="I4GO_EXPIRATIONMONTH" type="hidden" value="12" />
   <input name="I4GO_EXPIRATIONYEAR" type="hidden" value="2012" />
   <input name="I4GO_CARDHOLDERNAME" type="hidden" value="" />
   <input name="I4GO_STREETADDRESS" type="hidden" value="" />
   <input name="I4GO_POSTALCODE" type="hidden" value="65000" />
<img src="images/loading040.gif" alt="Spinner..." /> Loading...
   <noscript>
   Statement of Tokenization
   The payment information you have submitted has been securely stored in the Shift4 PCI-DSS certified data center and a token representing this information will be sent to the merchant for processing. Below is the information that will be returning to the originating merchant:
       Response: SUCCESS
       Response Code: 1
       Card Type: VS
       Token: 1111d7nhcwse30wq
   </noscript>
   <input type="submit" name="i4Go_submit" id="i4Go_submit" value="Continue" />
   </form>
   </body>
   </html>';
     execute immediate 'alter session set events =''31156 trace name context forever, level 2''';
     l_xml := xmltype(l_clob);
     execute immediate 'alter session set events =''31156 trace name context off''';
     select extractvalue( l_xml
                        , '/html/body/form/input[@name="I4GO_CARDTYPE"]/@value'
                        , 'xmlns="http://www.w3.org/1999/xhtml"' )
     into l_value
     from dual;
     dbms_output.put_line(l_value);
   end;
Problem when parsing html with xpath and xmltype
Edited by: peterv6i.blogspot.com on Apr 26, 2012 9:38 AM

Re: Help needed in passing values from workflow to Approve Forms

Dear Experts,
how do I pass values from a workflow to a step (Form) - approve form?
I am using a customized table structure as my data source (FORMCONTAINERELEMENT) but am stuck on how to access the data when i get to to the screen painter's flow logic... What am i missing? Can you give me a step by step example. the ones i see on the net are input fields that update the screen... nothing that shows value being passed from the outside.
I need to pass an exisitng value in the workflow into the form for approval of the the assigned agent.
Please help!!
Thank you.

Hello !
         Create a method just before the form step.This method should populate the values for the fields maintained in the form.
         Pass the values populated from this method to your customized table structure (data source).In other words, you have to pass all the values to the workflow container.
        To the step, pass this workflow container by binding.In the control tab of form step, you have to do the binding.
Regards,
S.Suresh

Passing values from HTML to JSP method,

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