Java Ee Applications on Oracle Java Cloud: Develop, Deploy, Monitor, and Manage Your Java Cloud Applications: Develop, Deploy, Monitor, and Manage Your Java Cloud Applications

290 Pages·2014·6.475 MB·English

by  Harshad Oak

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®
Java EE Applications
®
on Oracle Java Cloud
Develop, Deploy, Monitor, and
Manage Your Java Cloud Applications
Harshad Oak
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To the two men who shaped me:
My father, Achyut (Baba), my pillar of strength,
who against great odds ensured that I had a happy
upbringing and the gumption to rise.
Gandhi, who helped me realize the power
of love, truth, and nonviolence.
About the Author
Harshad Oak is the founder of IndicThreads and Rightrix Solutions.
IndicThreads.com is an online developer magazine and hosts some of the
most reputable technology conferences in India on topics such as Java,
cloud computing, software quality, and mobile software. Before starting
his own venture, Harshad was part of i-flex Solutions and Cognizant
Technology Solutions.
In addition to this work, he has authored Oracle JDeveloper 10g: Empowering
J2EE Development and Pro Jakarta Commons, and co-authored J2EE 1.4
Bible. Harshad has spoken at conferences in India, the United States, Sri
Lanka, Thailand, and China. He has been working to build active Java
communities in India and has organized as well as spoken at many Java user
group meetings. Additionally, Harshad teaches Enterprise Java to Master’s
candidates in Computer Science at Symbiosis University, India. Harshad has
been recognized as an Oracle ACE Director and a Java Champion for his
contributions to the technology and the community.
Harshad writes about technology on IndicThreads.com and its social
streams. He writes about social and other matters at HarshadOak.com and on
twitter @HarshadOak. He can be reached at [email protected].
About the Technical Editors
Markus Eisele is a software architect, developer, and consultant. He
works daily with customers and projects dealing with Enterprise-level Java
and infrastructures, including the Java platform and various web-related
technologies on a variety of platforms using products from different vendors.
An expert in Java EE servers, Markus is an Oracle ACE Director, a Java
Champion, and a member of the Java EE 7 expert group, and is a frequent
speaker at industry conferences. Follow him on Twitter (@myfear) or read his
blog (http://blog.eisele.net).
Arun Gupta is Director of Developer Advocacy at Red Hat and focuses on
JBoss middleware. He was a founding member of the Java EE team at Sun
Microsystems. At Oracle, Arun led a cross-functional team to drive the global
launch of the Java EE 7 platform. After authoring approximately 1,400 blogs
at blogs.oracle.com/arungupta on different Java technologies, he continues to
promote Red Hat technologies and products at blog.arungupta.me. Arun has
extensive speaking experience in 35+ countries on myriad topics.
Contents at a Glance
1 Java EE and Cloud Computing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
2 The Oracle Java Cloud. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
3 Build and Deploy with NetBeans. . . . . . . . . . . . . . . . . . . . . . . . . . . .49
4 Servlets, Filters, and Listeners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
5 JavaServer Pages, JSTL, and Expression Language . . . . . . . . . . . . . . .97
6 JavaServer Faces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127
7 Enterprise JavaBeans (Session Beans). . . . . . . . . . . . . . . . . . . . . . . .151
8 Web Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179
9 Persistence Using the Oracle Database Cloud Service. . . . . . . . . . .203
A Java EE Technologies and JSRs . . . . . . . . . . . . . . . . . . . . . . . . . . . . .233
B Application Servers Compatible with Java EE 5, 6, and 7. . . . . . . . .243
C Supported and Unsupported Technologies, Services, and APIs . . . .247
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
v
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Contents
Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix
1 Java EE and Cloud Computing . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Java Editions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Java EE Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Application Servers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Open Source vs. Commercial . . . . . . . . . . . . . . . . . . . . . . 4
Reference Implementation . . . . . . . . . . . . . . . . . . . . . . . . 6
API and Technology Specification . . . . . . . . . . . . . . . . . . . . . . . . 7
Java Community Process (JCP) and Java EE . . . . . . . . . . . . 8
Java EE Compatible . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Web Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Cloud Computing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Going Around in Circles . . . . . . . . . . . . . . . . . . . . . . . . . . 11
What Is Cloud Computing? . . . . . . . . . . . . . . . . . . . . . . . . 12
Why Cloud Computing? . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Concerns About Cloud Computing . . . . . . . . . . . . . . . . . . 15
Private, Public, and Hybrid Clouds . . . . . . . . . . . . . . . . . . 16
Cloud as a Leveler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Java EE on the Cloud . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Competing Technologies: Alternatives
to Java on the Cloud . . . . . . . . . . . . . . . . . . . . . . . . . 17
vii
viii Java EE Applications on Oracle Java Cloud
Standards and Java EE 7 . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Java EE Vendors and Alternatives . . . . . . . . . . . . . . . . . . . . 19
Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2 The Oracle Java Cloud . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Oracle’s Cloud Foray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Oracle Cloud Constituents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
SaaS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
IaaS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
PaaS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Java Cloud . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Pricing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Trial Signup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
My Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
IDE Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Oracle Java Cloud Service SDK . . . . . . . . . . . . . . . . . . . . . 36
Users and Roles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
3 Build and Deploy with NetBeans . . . . . . . . . . . . . . . . . . . . . . . . 49
Development IDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Why NetBeans? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Building with Java EE Technologies . . . . . . . . . . . . . . . . . . . . . . . 51
First NetBeans Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
What Happened? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Files and Directories Generated . . . . . . . . . . . . . . . . . . . . 58
The Cloud Deployment . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Clean and Build, Verify . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Web Application Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Directories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Packaging the Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
We Are at WAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
4 Servlets, Filters, and Listeners . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Servlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Servlet Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
HttpServlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Servlet One . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Servlet Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72