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Created by Dr. Xi on April 19, 2012 10:10:08
Last update: April 19, 2012 10:11:06
The default servlet for Tomcat is declared in $CATALINA_HOME/conf/web.xml :
<servlet>
<servlet-name>default</servle...
Therefore, static content is rendered by the default configuration unless you override it with your own definitions.
If you want to allow directory listing, just change the listing parameter to true :
<init-param>
<param-name>listings</para...
Change the welcome-file-list to display a default page in lieu of a directory listing:
<welcome-file-list>
<welcome-file>home.xhtml</...
Welcome pages are defined at the Web application level.
Created by Fang on March 30, 2012 15:04:04
Last update: March 30, 2012 15:04:04
Spring MVC 3.1 can send either JSON or HTML response on the same URL, depending on the type of response requested. With this mechanism, a page can be sent when directly requested from a link, but a JSON response can be sent in response to an AJAX request. This is the controller code:
package com.example; import java.util.Map; ... In the above example, JSON response will be sent when the HTTP request contains header "Accept: application/json". HTML response will be sent then the header is "Accept: */*", or "Accept: text/html", or anything else. You can add a limitation that the HTML response does not produce "application/json". But then the question is which response will be sent when the HTTP header is "Accept: */*"? Both methods will...
Created by nogeek on March 13, 2012 11:53:49
Last update: March 13, 2012 11:53:49
A. To configure Apache httpd to proxy Tomcat using HTTP: Load Apache httpd modules ( httpd.conf ):
LoadModule proxy_module /usr/lib/apache2/modules/m... Configure Apache httpd proxy: <VirtualHost *:80> ServerAdmin webmaster@my... Configure Tomcat HTTP connector with appropriate proxyName and proxyPort : <Connector port="8080" protocol="HTTP/1.1"... Note: context path must be the same for httpd and Tomcat. B. To configure Apache httpd to proxy Tomcat using AJP: Load Apache httpd modules ( httpd.conf ): LoadModule proxy_module /usr/lib/apache2/modules/m... Configure Apache httpd proxy: <VirtualHost *:80> ServerAdmin webmaster@my... Configure Tomcat AJP connector: <Connector port="8009" protocol="AJP/1.3" redirect... You can try this if context path must be changed between Tomcat and httpd: <VirtualHost *:80> ServerAdmin webmaster@my... But this may not work in case the servlet context path is written in the HTML content. ProxyPassReverse only...
Created by James on February 02, 2012 15:40:32
Last update: February 02, 2012 15:40:32
It's pretty easy to embed Flash video in HTML with swfobject . This example comes directly from the docs:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Stric...
where swfobject.js and expressInstall.swf comes with swfobjects. I provide these files:
swf/MySwfFile.swf
images/CoverArt.jpg
video/MyFlashVideo.flv
Created by Fang on January 04, 2012 11:14:46
Last update: January 04, 2012 11:14:46
Assume that your messages are defined in MessageResources.properties , this is how you load and use the messages:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Stric...
In MessageResources.properties :
pageTitle = JSF Resource Bundle Example
page.he...
Created by Fang on January 04, 2012 09:54:05
Last update: January 04, 2012 09:54:05
There are two ways to validate a form with JSF: jsf validation on the page with <f:validate...> tags (for example: <f:validateLength> , <f:validateRegex> , etc.), or JSR303 bean validation. This note is about how to customize messages for JSR303 bean validation. The validation message is specified in the message attribute for each validation annotation type. The mesage attribute is not a literal string, but a string that is interpolated in various ways. For example, the default validation message for AssertFalse is {javax.validation.constraints.AssertFalse.message} , which is replaced with the corresponding string in ValidationMessages.properties (or ValidationMessages_tr.properties , ValidationMessages_es.properties , depending on the locale). This is the contents of ValidationMessages.properties in the hibernate validator reference implementation:
javax.validation.constraints.AssertFalse.message =... To customize the messages, just provide the new value in...
Created by Fang on December 06, 2011 19:03:25
Last update: December 07, 2011 08:54:11
Our custom tag, as implemented in the previous note , is broken when a template is used.
Create a template file ( home-template.xhtml ):
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Stric...
and a test page that uses it ( home.xhtml ):
<?xml version="1.0" encoding="UTF-8"?>
<ui:comp...
Then request the page with URL: http://localhost:8080/facelet-demo/home.jsf?name=Jack .
You'll find that our hello tag works inside ui:repeat but fails to get the value defined by ui:param ! What's the problem? Our hello tag implementation evaluated the EL with the wrong EL context!
This is the corrected implementation:
package com.example;
import java.io.IOExcep...
Created by Fang on December 03, 2011 12:31:20
Last update: December 03, 2011 12:33:23
The <h:outputText> tag generates different output for body text and value attribute. I tested the following with Apache MyFaces 2.1.3:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Stric...
With value attribute, the output was:
<table border='1' cellspacing='0' cellpadding='4'>...
With text in body, the output was (i.e., the text was escaped despite escape="false" ):
<table border='1' cellspacing='0' cellpadding='...
Created by James on November 27, 2011 16:02:11
Last update: November 27, 2011 16:02:11
This is an example that uses the XSLTProcessor jQuery plugin for client side XSLT. Unfortunately it didn't work in IE or Chrome. It worked in Firefox but somehow disable-output-escaping="yes" was ignored.
<!DOCTYPE html>
<html xmlns="http://www.w3.org/...
Created by Fang on November 08, 2011 20:55:00
Last update: November 21, 2011 18:19:44
In the simple taglib example , I used a tag handler class to implement a taglib. This is an example to implement a taglib with a UI component. The purpose is to use a custom tag to split a string and print each part in a separate paragraph, i.e., print
<p>john</p> <p>steve</p> <p>mike</p> with custom tag <my:foreach> : <my:foreach var="who" value="john steve mike"> ... These are the files: pom.xml <project xmlns="http://maven.apache.org/POM/4.0.0"... src/main/java/com/example/UIForeash.java : package com.example; import java.io.IOExcep... src/main/resources/META-INF/faces-config.xml : <?xml version="1.0" encoding="UTF-8"?> <faces-c... src/main/resources/META-INF/foreach.taglib.xml : <?xml version="1.0" encoding="UTF-8"?> <facelet... How to use: Put the JAR file generated by the above project in the WEB-INF/lib folder of the web app. If the web app is a Maven project, just add the taglib project as a dependency:...
