Gettting values from HTML elements in a servlet

Hello
I have some Java and embedded HTML code in a servlet which is asking the user to enter a value as below:
out.println("<form name=\"generategraph\" action=\"/monolith2/graphingoutput\" method = \"get\">");
out.println("<h3>Pick slope for graph type</h3>" +
"<input type = \"text\" name = \"slope\" size = \"3\" value = \"1\" align = \"right\>");
out.println("<input type = \"submit\" value = \"Generate graph\"></form>\n");
However, I cannot access the contents of the element slope which I need to validate. I have tried:
String str = request.getParameter("slope");
But without success; I simply get null.
Have you any ideas?
Thanks
Martin O'Shea.
Message was edited by:
Martin_OShea

skp71
I tried:
out.println("<form name=\"generategraph\" action=\"/monolith2/graphingoutput\" method = \"get\">");
out.println("<h3>Pick slope for graph type</h3>" +
"<input type = \"text\" name = \"slope\" size = \"3\" value = \"1\" align = \"right\>");
out.println("<input type = \"submit\" value = \"Generate graph\"></form>\n");
String str = (String) request.getParameter("slope");
But without success: I still get null
Have I done something wrong?
Martin O'Shea.

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sample Code:
PROCEDURE get_token (
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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,
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v_url_params VARCHAR2 (32767);
v_resp_str VARCHAR2 (32767);
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v_requesterreference VARCHAR2 (12) := p_requesterreference;
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v_i4go_cvv2code VARCHAR2 (3) := p_cvv2code;
v_name VARCHAR2 (256);
v_value VARCHAR2 (1024);
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CURSOR setup_cur
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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;
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<!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">
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</head>
<body onload="bodyOnLoad();">
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</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
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begin
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                        , '/html/body/form/input[@name="I4GO_CARDTYPE"]/@value'
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Problem when parsing html with xpath and xmltype
Edited by: peterv6i.blogspot.com on Apr 26, 2012 9:38 AM

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Edited by: Irish_Fred on Feb 4, 2010 12:43 PM
Edited by: Irish_Fred on Feb 4, 2010 12:44 PM
Edited by: Irish_Fred on Feb 4, 2010 2:14 PM
Edited by: Irish_Fred on Feb 4, 2010 2:26 PM
Edited by: Irish_Fred on Feb 4, 2010 2:26 PM
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see following use case.i have xml as a string
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i need to convert string to XML object. now i am assigning this value to Schema.following is my schema.
<xsd:element name="email">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="ovdTriggeredDate" type="xsd:string" minOccurs="1"/>
</xsd:complexType>
</xsd:sequence>
</xsd:element>
i am able to convert XML string to xml object. now i need only one variable of xml. so i am assigning "ovdTriggeredDate" to string variable "variable_2"
but its giving me exception. any idea ?
thanks,
Nimisha

How can i pass parameter values from html to a shell script

Hi Guys...
I had a requirement where i need to execute a sql statement and print the output in HTML page. This report has parameters to enter. So i created a HTML form which accepts parameters. When the submit button is pressed, the action tag in the form invokes unix shell script file. It will open sqlplus and run the sql script file .sql and print the output in the HTML page.
sql script contains the query and some set options which prints the output in HTML page. Like "SET MARKUP HTML ON"... The query has some parameters like "select * from emp where empno = &&empnumber. I will use the same name "empnumber" while created the HTML parameter form like " <input type = "text" name="empnumber" size="10" align="left">.
user sees this parameter form and enters some value in to that empno text box.
My question is how can i catch these parameter values in a shell script and pass it to the sql script to execute it.
Help Appreciated
Thanx

This is a A Bad Idea (tm). This type of CGI processing is old and were (and still is) full of security holes. Very easy to inject stuff (Unix commands and SQL) into it.. To get those parameters into SQL*Plus requires using Unix shell commands to process it - and something like a backquote allows all kinds of nasty stuff to be injected. The Unix shell was never designed to be used as a secure CGI environment.
There are far better and far superior alternatives. Perl (with Perl_DBI) and PHP (using Zend Core for Oracle) come to mind as web scripting languages.
Even easier is using HTMLDB. Very few moving parts. Is free. Supports Oracle 9.2 and 10G.

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Does anyone have a working example of getting a count(fieldname) using em.createNativeQuery? I.E. (Select count(*) from table).getSingleResult()
I keep getting ClassCastException: java.util.Vector and then when I make it a vector I get a NullPointerException. I've tried using SqlResultSetmappings but get similar results.
I'm working in JDeveloper 10.1.3.4. Most of this app uses entity classes but the one I'm dealing with the developers chose not to make it an entity class so the necessity to use createNativeQuery.
This seems so simple but every example I've grabbed from goggle doesn't work or produces the same cast errors.
TIA,
Dave

Here's what I did to get this fixed:
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Browser Invocation - from HTML element click

If anyone knows how to make this happen, I would really
appreciate any info. Adobe is trying to replicate the 'popup
protection' that most modern browsers implement which prevents new
browser windows from being opened when the action is not triggered
by a user click (to prevent popup spam). However when the browser's
implemented this feature they allowed javascript code the may be at
the end of a cascade to open a browser window by correctly noticing
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However it seems that Adobe's implementation requires a click
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prevents any non-flash content on a web site is to successfully
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interaction.

Hi, Rico-
Have you read the section of the API doc on calling an Animate composition from outside of the composition?
http://www.adobe.com/devnet-docs/edgeanimate/api/current/index.html#differentcompositions
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Gettting values from HTML elements in a servlet

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