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Created by Dr. Xi on March 22, 2013 12:18:39 Last update: March 22, 2013 12:18:39
This is a step-by-step guide to create a "contract-first" web service with Apache CXF. It's a lot easier than doing the same thing with Spring-WS. The project uses standard Maven directory layout. Define the data types ( src/main/resources/hello.xsd ):
<xs:schema xmlns:xs="http://www.w3.org/200...Define the service ( src/main/resources/hello.wsdl ):
<?xml version='1.1' encoding='UTF-8'?> <wsdl:de...Create pom.xml :
<project xmlns="http://maven.apache.org/POM/4....Generate jaxb bindings:
$ mvn generate-sourcesCode the web service ( src/main/java/com/example/cxfdemo/HelloPortImpl.java ):
package com.example.cxfdemo; import javax.j...Declare the CXF servlet in web.xml ( src/main/webapp/WEB-INF/web.xml ):
<?xml version="1.0" encoding="UTF-8"?> <web-app...Wire up the web service implementation ( src/main/webapp/WEB-INF/cxf-servlet.xml ):
<?xml version="1.0" encoding="UTF-8"?> <beans x...Build the WAR:
$ mvn clean packageAfter the webapp is deployed (Tomcat running on port 8080), the web service (WSDL) is available via...
Created by Dr. Xi on March 21, 2013 20:29:14 Last update: March 22, 2013 08:58:08
Spring-WS documentation says you can use a Jaxb object as parameter or return type, provided that it is annotated with javax.xml.bind.annotation.XmlRootElement , or is an instance of javax.xml.bind.JAXBElement . But that's a lot easier said than done! For example, if sayHelloResponse is defined as:
<xs:element name="sayHelloResponse" type="tns:sayH...then the JAXB generated class is not annotated with XmlRootElement , therefore, unusable for Spring-WS. You have to define the type as:
<xs:element name="sayHelloResponse"> <xs:compl...in order to generate a type annotated with XmlRootElement . But that is not always possible. Alternatively, you can use the Maven plugin maven-jaxb2-plugin with the jaxb2-basics-annotate plugin (yes, plugin inside plugin) to inject the XmlRootElement annotation into the generated JAXB class. This is the pom:
<project xmlns="http://maven.apache.org/POM/4.0.0"...and the binding file:
<?xml version="1.0" encoding="UTF-8" standalone="y......
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 James on February 02, 2012 16:09:05 Last update: February 02, 2012 16:09:17
flowplayer is another way to embed Flash in a web page. The code looks like this:
<object width="6400" height="380" data="swf/flowpl...You need to download two swf files: http://releases.flowplayer.org/swf/flowplayer-3.2.1.swf http://releases.flowplayer.org/swf/flowplayer.controls-3.2.0.swf
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 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:...
Created by Fang on November 10, 2011 09:26:12 Last update: November 10, 2011 09:26:12
Syntax highlighted XML schema for JSF 2.0 Application Configuration Resource File ( faces-config.xml ). Almost 3000 lines!
<?xml version="1.0" encoding="UTF-8"?> <xsd:sch...
Created by Fang on October 28, 2011 13:49:40 Last update: October 30, 2011 19:23:25
This is a simple example to demonstrate the templating power of JSF facelets. If you've used struts tiles before, you'll recognize the simplicity of templating with facelets. I've stripped out everything else except the pages themselves, just to put our focus on facelets. This is a Maven based project, and you need Tomcat (or any servlet container) to run the resulting webapp. To begin with this is the list of files:
./pom.xml ./src/main/webapp/home.xhtml ./src...I left faces-config.xml in there for completeness sake, it may not be needed. The Maven POM ( pom.xml ):
<?xml version="1.0" encoding="UTF-8"?> <project...Web app configuration ( WEB-INF/web.xml ):
<?xml version="1.0" encoding="UTF-8"?> <web-app...Empty WEB-INF/faces-config.xml :
<?xml version="1.0" encoding="UTF-8"?> <!-- Thi...index.jsp is simply a redirect to home.jsf :
<% response.sendRedirect("home.jsf"); %>...
Created by Dr. Xi on October 16, 2008 20:45:40 Last update: March 28, 2011 20:23:22
Java's built-in classes are way too complex/flexible for a simple protocol like HTTP. This is a wrapper to simplify HTTP GET and POST.
import java.io.*; import java.net.*; imp...A simple test:
import java.io.*; import java.util.*; ...
Created by James on July 04, 2009 16:30:40 Last update: January 11, 2011 21:21:59
If you are looking for a solution for a progress bar, I direct you to the following resources: Bare Naked App provides a simple and elegant solution based on pure CSS with two images. You control the percentage of completion through the background-position attribute of the CSS. HTML:
<img src="/images/percentImage.png" alt="...CSS: