Recent Notes
Displaying keyword search results 91 - 100
Created by Fang on July 17, 2010 03:16:53
Last update: July 17, 2010 03:18:25
This error happens when the ordering of elements in web.xml is not correct. For example, in a <servlet> declaration, <servlet-name> should come before <servlet-class> . If you switch the order of <servlet-name> and <servlet-class> , you'll get this error.
This was my stack trace in JBoss when I declared <load-on-startup> before <init-param> for a servlet:
DEPLOYMENTS IN ERROR:
Deployment "vfszip:/C:/...
Created by meiu on July 07, 2010 15:16:34
Last update: July 07, 2010 15:17:08
Example:
<%@ taglib prefix="fmt" uri="http://java.sun.com/j...
Full attributes:
Attribute Meaning
value Date object to be formatted
type Format time only ('time'), date only ('date'), or both date and time ('both')?
dateStyle Style to format date, e.g., default, short, long, full etc (c.f. JavaDoc for java.text.DateFormat)
timeStyle Style for format time, e.g., default, short, long, full etc (c.f. JavaDoc for java.text.DateFormat)
pattern User defined pattern, e.g., MM/dd/yyyy
timeZone Which time zone to display the date for?
var If the var attribute is specified, then a String value containing the formatted date is assigned to the named variable. Otherwise, the <fmt:formatDate> tag will write out the formatting results.
scope When the var attribute is present, the scope attribute specifies the scope of the resulting variable.
.
Created by James on June 30, 2010 19:04:45
Last update: July 03, 2010 21:24:33
Technically, file upload cannot be handled by Ajax, because XMLHttpRequest (XHR) does not handle file inputs. All techniques not using Flash rely on an invisible iframe as the upload form submit target. JavaScript then grabs the response content from the iframe and present it, giving the same illusion as Ajax. webtoolkit AIM The technique by webtoolkit is very simple. It involves 3 simple steps: include the AIM script, implement the start/finish JavaScript functions, and add an onsubmit handler to the normal file upload form. The hooked up form looks like:
<head> <script type="text/javascript" src="webt... The AIM script is also quite simple: /** * * AJAX IFRAME METHOD (AIM) * http... The above code only supports HTML responses. In order to support JSON responses, the above...
Created by James on June 30, 2010 20:14:28
Last update: July 03, 2010 18:41:12
The HTML page
<!DOCTYPE html>
<html>
<head>
<title>jQu...
Client Side Code
// called before upload submit
function sta...
Server Side Code
Using Apache Commons FileUpload as example.
Upload code (responds to fileUpload.do ):
final HttpSession session = httpServletRequest...
Progress code (responds to uploadProgress.do ):
HttpSession session = httpServletRequest.getSe...
Created by James on June 24, 2010 22:04:19
Last update: June 24, 2010 22:04:19
Start with this page:
<!DOCTYPE html>
<html>
<head>
<title>jQu...
When you click "Submit", the form submits fine.
Now turn the form to a jQuery dialog:
<head>
<title>jQuery UI Dialog</title>
...
When you click "Submit", the form no longer submits!
Why? When you convert the contents of the form into a dialog, the form becomes empty! The "Submit" button is no longer associated with the form.
Conclusion: you should always put the form tag inside the element you are converting to a dialog.
Created by James on June 22, 2010 19:40:53
Last update: June 22, 2010 19:52:53
Use jQuery to submit a form by clicking a button not associated with the form. The jQuery submit method can also be used to associate an event handler on the form.
<!DOCTYPE html>
<html>
<head>
<title>jQu...
To submit the first form on the page:
$('form:first').submit();
Created by nogeek on June 01, 2010 14:34:12
Last update: June 01, 2010 14:34:12
Test with curl and default Apache doc.
C:\>curl --dump-header - http://localhost
HTTP/...
Created by Dr. Xi on November 24, 2007 17:42:13
Last update: May 13, 2010 16:10:51
The html:image tag renders an HTML <input> tag of type "image".
The html:img tag enders an HTML <img> element with the image at the specified URL, like the html:link tag.
http://struts.apache.org/1.2.x/userGuide/struts-html.html#img
Created by nogeek on April 25, 2010 05:09:14
Last update: April 25, 2010 05:10:46
Oracle Web Cache version used:
Oracle Application Server Web Cache 10.1.2.3.0
...
The test page is a simple Struts action sending a URL redirect:
public ActionForward execute(ActionMapping map...
Web Cache setup
Origin server
Host Name Port
oas.host 7777
Site
Host Name Port URL Path Prefix
webcache.host 80
Test results
Request directly to the OC4J (Oracle Application Server):
C:\work\testAppWebApp2>curl --dump-header - http:/...
Request to Oracle Web Cache:
C:\work\testAppWebApp2>curl --dump-header - http:/...
Notice that Oracle Web Cache correctly translated the host name in the header and HTML page. However, the port number remained that of the Oracle App Server.
Created by Fang on April 03, 2010 20:21:15
Last update: April 04, 2010 03:30:22
The tags <c:out> The <c:out> tag evaluates an expression and outputs the result on the page. The syntax is:
<c:out value="value" [escapeXml="{true|false}"] ... where escapeXml defaults to true and default defaults to empty string "". <c:out value="${expr}" escapeXml="false"/> is equivalent to ${expr} . If a variable is set in multiple scopes, the lower scope wins. In the following example code, attribute1 is set in request, session, and application scopes; attribute2 is set in session and application scopes; attribute3 is set in the application scope. The results are: <c:out value="${attribute1}"/> : Attribute1 request scope <c:out value="${attribute2}"/> : Attribute2 session scope <c:out value="${attribute3}"/> : Attribute3 application scope To access values in higher scopes, you have to specify the scope explicitly, like this: <c:out value="${sessionScope.attribute1}"/> : Attribute1 session...
