Welcome!

Weblogic Authors: Yeshim Deniz, Elizabeth White, Michael Meiner, Michael Bushong, Avi Rosenthal

Related Topics: Java IoT, Weblogic

Java IoT: Article

JDJ Feature — Java API for XML Web Services (JAX-WS)

Creating a JAX-WS 2.0 Web Service in WebLogic Server 10

WebLogic Server 10 Technology Preview supports JEE 5. A feature of JEE 5 is the Java API for XML Web Services (JAX-WS) used to create Web Services and Web Service clients. WebLogic Server 10 provides the jwsc task to create the Web Service artifacts and the clientgen task to create the artifacts for Web Service clients. In this article we'll create an example JAX-WS 2.0 Web Service in WebLogic Server 10 Technology Preview.

JAX-WS is an API to create Web applications and Web Services using the XML-based Web Services functionality. To create a Web Service first create a Service Endpoint Implementation (SEI) class. The implementation class is annotated with javax.jws.WebService annotation. The implementation class must not be abstract or final, and must contain a default public constructor.

A Web Service provides operations that are made available to Web Service clients. So add business methods to the Web Service class. The business methods are public and must not be static or final and may be annotated with the javax.jws.WebMethod annotation. By default all public methods are made available as Web Service operations.

Preliminary Setup
Download and install the WebLogic Server 10 Technical Preview. Download and install Apache Ant, which is required to run Ant tasks to create Web Service and client classes. Download and install JDK 5 if not already installed. It's required to run Apache Ant.

Using the WebLogic server Configuration Wizard create a WebLogic domain, base_domain.

Creating a Web Service
We'll create a JAX-WS 2.0 Web Service. First, set the WebLogic server environment by running the setDomainEnv command script.

C:\BEA\user_projects\domains\base_domain\bin> setDomainEnv

Next, create a project directory in the C:\BEA\user_projects directory with the mkdir command. The directory names should be separated with backslashes instead of forward slashes for the mkdir command to run.

C:\BEA\user_projects> mkdir webservices\hello_webservice

Create an src directory under the project directory that contains subdirectories corresponding to the package name of the Java Web Service class.

C:\BEA\user_projects\webservices\hello_webservice>mkdir src\webservices\hello_webservice

Create a Java Web Service (JWS) file for implementing a JAX-WS Web Service. Annotate the Web Service implementation class HelloWsImpl with the @WebService annotation. JSR 181: Web Services Metadata for the Java Platform defines the standard annotations that can be used in a Java Web Service. The javax.jws.WebService annotation specifies that a class implements a Web Service. The attributes that may be specified in the javax.jws.WebService annotation are discussed in Table 1. All of them are optional.

Add a Web Service method that returns a Hello message. By default all public methods are exposed as Web Service operations. Web Service methods may be annotated with the @WebMethod annotation. Attributes operationName and action may be specified in the WebMethod annotation. The operationName attribute specifies the name of the operation as mapped to the wsdl:operation element in the WSDL. Default value is the method name. For SOAP bindings, the action attribute maps to the SoapAction header in the SOAP messages.

The HelloWsImpl Web Service implementation class is listed below.

package webservices.hello_webservice;
import javax.jws.WebService;

@WebService()
public class HelloWsImpl {

     public String hello(String name) {

         return "Hello "+name +" Welcome to Web Services!";

     }

}

Copy the HelloWsImpl.java class to the C:\BEA\user_projects\webservices\hello_webservice\src\webservices\hello_webservice directory.

WebLogic Server 10 provides WebLogic Web Services Ant tasks to create Web Services and client classes. The jwsc Ant task takes an annotated JWS file as input and generates all the artifacts required to create a WebLogic Web Service.
The generated files include the following.

  1. Java Source files that implement a standard JSR-921 Web Service, such as the Service Endpoint Interface (SEI). For a JWS class HelloWsImpl an SEI HelloWsImplPortType.java gets created.
  2. Standard and WebLogic-specific deployment descriptors. The standard webservices.xml deployment descriptor and the JAX-RPC mapping files get created. The WebLogic-specific Web Services deployment descriptor weblogic-webservices.xml also gets created.
  3. The WSDL file that describes the Web Service.
  4. The XML Schema representation of any Java user-defined types used as parameters or return values of Web Service methods.
A jws sub-element of the jwsc element specifies a JWS file. By default jwsc generates a JAX-RPC 1.1 Web Service. To generate a JAX-WS 2.0 Web Service specify the type attribute of the jws element as type="JAXWS".

Subsequent to generating the Web Service artifacts, jwsc compiles the JWS and Java files and packages the generated artifacts and classes into a Web application WAR file. Jwsc also creates an enterprise application directory structure. The Web Service may be deployed as a WAR file or packaged into an EAR file and deployed. Jwsc generates a WAR file corresponding to each jws element that's a direct sub-element of the jwsc element. JWS files may be grouped by adding the jws elements to a module element, which is a direct sub-element of the jwsc element. If a module element is specified only one WAR file is generated.


More Stories By Deepak Vohra

Deepak Vohra is a Sun Certified Java 1.4 Programmer and a Web developer.

More Stories By Ajay Vohra

Ajay Vohra is a senior solutions architect with DataSynapse Inc.

Comments (1) View Comments

Share your thoughts on this story.

Add your comment
You must be signed in to add a comment. Sign-in | Register

In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.


Most Recent Comments
nayanj 10/26/07 02:49:39 PM EDT

The example give in this article is too simple. Information given in this article can even be found in weblogic documentation.. so what additional value does this article? to me NIL.

I would have appreciated a more realistic example where webservice is used along with other libraries like beehive controls and then see how you can jwsc to package this application into an .ear or .war. There are a bunch of cases in which jwsc gives warnings and errors and none of them seem to be discussed/explained in this article.

@ThingsExpo Stories
Nordstrom is transforming the way that they do business and the cloud is the key to enabling speed and hyper personalized customer experiences. In his session at 21st Cloud Expo, Ken Schow, VP of Engineering at Nordstrom, will discuss some of the key learnings and common pitfalls of large enterprises moving to the cloud. This includes strategies around choosing a cloud provider(s), architecture, and lessons learned. In addition, he’ll go over some of the best practices for structured team migrat...
SYS-CON Events announced today that Taica will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Taica manufacturers Alpha-GEL brand silicone components and materials, which maintain outstanding performance over a wide temperature range -40C to +200C. For more information, visit http://www.taica.co.jp/english/.
SYS-CON Events announced today that MIRAI Inc. will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. MIRAI Inc. are IT consultants from the public sector whose mission is to solve social issues by technology and innovation and to create a meaningful future for people.
Recently, REAN Cloud built a digital concierge for a North Carolina hospital that had observed that most patient call button questions were repetitive. In addition, the paper-based process used to measure patient health metrics was laborious, not in real-time and sometimes error-prone. In their session at 21st Cloud Expo, Sean Finnerty, Executive Director, Practice Lead, Health Care & Life Science at REAN Cloud, and Dr. S.P.T. Krishnan, Principal Architect at REAN Cloud, will discuss how they bu...
Coca-Cola’s Google powered digital signage system lays the groundwork for a more valuable connection between Coke and its customers. Digital signs pair software with high-resolution displays so that a message can be changed instantly based on what the operator wants to communicate or sell. In their Day 3 Keynote at 21st Cloud Expo, Greg Chambers, Global Group Director, Digital Innovation, Coca-Cola, and Vidya Nagarajan, a Senior Product Manager at Google, will discuss how from store operations...
As hybrid cloud becomes the de-facto standard mode of operation for most enterprises, new challenges arise on how to efficiently and economically share data across environments. In his session at 21st Cloud Expo, Dr. Allon Cohen, VP of Product at Elastifile, will explore new techniques and best practices that help enterprise IT benefit from the advantages of hybrid cloud environments by enabling data availability for both legacy enterprise and cloud-native mission critical applications. By rev...
Join IBM November 1 at 21st Cloud Expo at the Santa Clara Convention Center in Santa Clara, CA, and learn how IBM Watson can bring cognitive services and AI to intelligent, unmanned systems. Cognitive analysis impacts today’s systems with unparalleled ability that were previously available only to manned, back-end operations. Thanks to cloud processing, IBM Watson can bring cognitive services and AI to intelligent, unmanned systems. Imagine a robot vacuum that becomes your personal assistant tha...
With major technology companies and startups seriously embracing Cloud strategies, now is the perfect time to attend 21st Cloud Expo October 31 - November 2, 2017, at the Santa Clara Convention Center, CA, and June 12-14, 2018, at the Javits Center in New York City, NY, and learn what is going on, contribute to the discussions, and ensure that your enterprise is on the right path to Digital Transformation.
SYS-CON Events announced today that Datera will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Datera offers a radically new approach to data management, where innovative software makes data infrastructure invisible, elastic and able to perform at the highest level. It eliminates hardware lock-in and gives IT organizations the choice to source x86 server nodes, with business model option...
Infoblox delivers Actionable Network Intelligence to enterprise, government, and service provider customers around the world. They are the industry leader in DNS, DHCP, and IP address management, the category known as DDI. We empower thousands of organizations to control and secure their networks from the core-enabling them to increase efficiency and visibility, improve customer service, and meet compliance requirements.
Digital transformation is changing the face of business. The IDC predicts that enterprises will commit to a massive new scale of digital transformation, to stake out leadership positions in the "digital transformation economy." Accordingly, attendees at the upcoming Cloud Expo | @ThingsExpo at the Santa Clara Convention Center in Santa Clara, CA, Oct 31-Nov 2, will find fresh new content in a new track called Enterprise Cloud & Digital Transformation.
SYS-CON Events announced today that N3N will exhibit at SYS-CON's @ThingsExpo, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. N3N’s solutions increase the effectiveness of operations and control centers, increase the value of IoT investments, and facilitate real-time operational decision making. N3N enables operations teams with a four dimensional digital “big board” that consolidates real-time live video feeds alongside IoT sensor data a...
SYS-CON Events announced today that NetApp has been named “Bronze Sponsor” of SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. NetApp is the data authority for hybrid cloud. NetApp provides a full range of hybrid cloud data services that simplify management of applications and data across cloud and on-premises environments to accelerate digital transformation. Together with their partners, NetApp emp...
Smart cities have the potential to change our lives at so many levels for citizens: less pollution, reduced parking obstacles, better health, education and more energy savings. Real-time data streaming and the Internet of Things (IoT) possess the power to turn this vision into a reality. However, most organizations today are building their data infrastructure to focus solely on addressing immediate business needs vs. a platform capable of quickly adapting emerging technologies to address future ...
SYS-CON Events announced today that Avere Systems, a leading provider of hybrid cloud enablement solutions, will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Avere Systems was created by file systems experts determined to reinvent storage by changing the way enterprises thought about and bought storage resources. With decades of experience behind the company’s founders, Avere got its ...
SYS-CON Events announced today that Avere Systems, a leading provider of enterprise storage for the hybrid cloud, will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 - Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Avere delivers a more modern architectural approach to storage that doesn't require the overprovisioning of storage capacity to achieve performance, overspending on expensive storage media for inactive data or the overbui...
SYS-CON Events announced today that IBM has been named “Diamond Sponsor” of SYS-CON's 21st Cloud Expo, which will take place on October 31 through November 2nd 2017 at the Santa Clara Convention Center in Santa Clara, California.
SYS-CON Events announced today that Ryobi Systems will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Ryobi Systems Co., Ltd., as an information service company, specialized in business support for local governments and medical industry. We are challenging to achive the precision farming with AI. For more information, visit http:...
High-velocity engineering teams are applying not only continuous delivery processes, but also lessons in experimentation from established leaders like Amazon, Netflix, and Facebook. These companies have made experimentation a foundation for their release processes, allowing them to try out major feature releases and redesigns within smaller groups before making them broadly available. In his session at 21st Cloud Expo, Brian Lucas, Senior Staff Engineer at Optimizely, will discuss how by using...
In this strange new world where more and more power is drawn from business technology, companies are effectively straddling two paths on the road to innovation and transformation into digital enterprises. The first path is the heritage trail – with “legacy” technology forming the background. Here, extant technologies are transformed by core IT teams to provide more API-driven approaches. Legacy systems can restrict companies that are transitioning into digital enterprises. To truly become a lead...