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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-sources Code 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 package After 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 Dr. Xi on March 07, 2013 20:26:23    Last update: March 07, 2013 20:26:23
Create a jax-ws web service with Spring, Apache CXF and Maven. Create the pom.xml : <project xmlns="http://maven.apache.org/POM/4.0.0"... Create the web service interface ( src/main/java/jaxws/JaxwsHello.java ): package jaxws; import javax.jws.WebService;... Implement the web service ( src/main/java/jaxws/JaxwsHelloImpl.java ): package jaxws; import javax.jws.WebService;... Create src/main/webapp/WEB-INF/cxf-servlet.xml : <?xml version="1.0" encoding="UTF-8"?> <beans x... Register the CXF servlet in src/main/webapp/WEB-INF/web.xml : <?xml version="1.0" encoding="UTF-8"?> <web-app... Build: mvn package The resulting WAR file can be deployed to any servlet container (for example, Tomcat).
Created by Dr. Xi on March 01, 2013 16:09:00    Last update: March 04, 2013 12:28:23
This is probably the easiest way to create a web service in JAX-WS. There are no external dependencies other than Java EE. Assuming that you build the web service as a webapp (say jaxws-example.war), the pom.xml can be as simple as: <project xmlns="http://maven.apache.org/POM/4.0.0"... You can implement and deploy the web service in 3 easy steps: Code the service as a POJO (annotate class to expose it as a web service) package jaxws; import javax.jws.WebMethod; ... Declare the POJO as a servlet in WEB-INF/web.xml : <?xml version="1.0" encoding="UTF-8"?> <web-app... Build the webapp, and deploy the resulting war: mvn package The only catch is, this only works for a Java EE 5+ compliant container such as WebLogic or JBoss. It does not work for a simple servlet...
Created by Fang on January 04, 2013 09:02:44    Last update: January 04, 2013 09:02:44
This snippet sets system properties from Maven surefire test plugin. This is useful when you want to set logging (for example, log4j) properties based on Maven project properties. Example that sets system property testlog.dir : <plugins> <plugin> <groupId>org.apach... Example log4j.xml that uses system property testlog.dir : <?xml version="1.0" encoding="UTF-8"?> <!DOCTYP...
Created by Fang on January 04, 2013 08:00:37    Last update: January 04, 2013 08:00:37
This is a Maven POM that prints out some built-in project properties: <project xmlns="http://maven.apache.org/PO... Output: $ mvn validate [INFO] Scanning for projects.....
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 Fang on March 05, 2012 20:11:56    Last update: March 05, 2012 20:11:56
This is a bare bones Maven project to get started with Java JSR 303 bean validation. Directory structure: ./pom.xml ./src ./src/main ./src/main/jav... pom.xml : <project xmlns="http://maven.apache.org/POM/4.0.0"... which includes dependencies on JUnit, Java bean validation API and the Hibernate validator reference implementation.
Created by venky on March 05, 2012 13:36:41    Last update: March 05, 2012 13:36:41
Thanks Dr.Xi, I was having a tough time changing the deployment context path of my web-app using the so-called context.xml file under /META-INF, it dint work (tomcat documentation at http://tomcat.apache.org/tomcat-6.0-doc/config/context.html , seemed pretty sure it would :() But I have one question, as changing server.xml is too instrusive for every web-app you build, is there any other way of pushing this configuration to one of the application specific files ? thanks, Venky
Created by Dr. Xi on February 13, 2012 20:48:56    Last update: February 13, 2012 20:48:56
When you insert an attribute in JSP: <%@ taglib uri="http://tiles.apache.org/tags-tiles... you must define the attribute in tiles definitions: <definition name="/home" template="/WEB-INF/templa... Otherwise you'll get runtime exception. The ignore attribute, which defaults to false , will suppress the runtime exception when the attribute is not defined in tiles definition: <%@ taglib uri="http://tiles.apache.org/tags-tiles...
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