JBoss Fuse - Apache CXF

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In this chapter, let us discuss about what Apache CXF is and how it can be helpful in developing SOAP and Rest Web Services.

What is Apache CXF?

Apache CXF is a web service development framework that can be utilized to develop SOAP and Rest web services. CXF is fully compliant with JAX-RS and JAX-Ws standard.

It is most widely used web service development framework now. CXF has learned and improved over Axis2 which is now gradually being replaced by CXF.

CXF vs Axis2

CXF Axis2
Improvements

CXF is most used framework as of now.

It has lot improvements over Axis2

Axis2 is gradually being replaced by CXf.

It requires more code as compared to CXF
Code required

CXF requires less code as compared to Axis2

Axis2 requires more code comparatively
Standard Compliance

CSF is fully compliant with JAX-RS and JAX-WS

Axis2 is not fully compliant with JAX-RS and JAX-WS
Compatible with Spring

Yes

No
Separation of front-ends

Clean separation of front-end from JAX-WS code

No clean separation is provided

SOAP

SOAP stands for Simple Object Access Protocol. It is a protocol for exchanging structured information over web services between two systems. It mostly relies on XML for structuring data and uses HTTP or SMTP for message negotiation and transmission.

There are two approaches to develop SOAP web services −

  • Code first − In this approach, WSDL is generated from code.

  • Contract first − In contract first, code is generated from WSDL.

SOAP Development Using CXF

Configure Maven

Add the following profile to your settings.xml of Maven.

<profiles>
   <profile>
      <id>Jboss-Fuse</id>
		
      <activation>
         <activeByDefault>true</activeByDefault>
      </activation>
		
      <repositories>
         <repository>
            <id>fusesource</id>
            <url>http://repo.fusesource.com/nexus/content/groups/public/</url>
            <snapshots>
               <enabled>false</enabled>
            </snapshots>
            <releases>
               <enabled>true</enabled>
            </releases>
         </repository>
      </repositories>
		
   </profile>
</profiles>

Create Skeleton

mvn archetype:generate
-DarchetypeGroupId = org.apache.servicemix.tooling 
-DarchetypeArtifactId = servicemix-cxf-code-first-osgi-bundle 
-DarchetypeVersion=2012.01.0.redhat-60024 
-DgroupId = org.fusesource.example 
-DartifactId = cxf-basic 
-Dversion = 1.0-SNAPSHOT

Build Web Service Project.

mvn clean install

Install web-service into Fuse using the following command.

JBossFuse:karaf@root>install -s mvn:org.fusesource.example/cxf-basic/1.0-SNAPSH

Check if bundle has registered SOQP web-service

Open URL http://localhost:8181/cxf

SOQP web-service

The web-service should be listed as follows.

Testing Web-Service

mvn -Pclient

INFO − Creating Service {http://ws.totorials.com/} PersonService from class com.to

torials.ws.Person
Invoking getPerson...
getPerson._getPerson_personId = Guillaume
getPerson._getPerson_ssn = 000-000-0000
getPerson._getPerson_name = Guillaume
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 30.668 s
[INFO] Finished at: 2016-02-15T21:01:20+05:30
[INFO] Final Memory: 10M/37M
[INFO] ------------------------------------------------------------------------
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