J2ee applications download

Create a classes subdirectory to hold Java classes and JAR files, and add them to the client Class-Path in the startup script. You define JNDI lookup entries in the client deployment descriptor. You use weblogic. The weblogic. ClientDeployer class is executed on the Java command line with the following syntax:. The ear-file argument is an expanded directory or Java archive file with a. Main utility to bootstrap the client-side application and point it to a WebLogic Server instance as follows:.

Name the WebLogic Server client deployment file using the suffix. ClientDeployer class is responsible for generating and adding a client. A separate program, weblogic. Main, creates a local client JNDI context and runs the client from the entry point named in the client manifest file. Note: To run the J2EE client application using weblogic.

ClientDeployer, you need the weblogic. Main class located in the weblogic. If a resource mentioned by the application-client. QueueConnectionFactory javax. TopicConnectionFactory javax. Session javax. DataSource The weblogic. The rest of the client environment is bound from the client. Main class emits error messages for missing or incomplete bindings. We do not currently support form-based authentication.

The topics in this section discuss building and packaging J2EE applications using Apache Ant, an extensible Java-based tool. Ant is similar to the make command but is designed for building Java applications.

Ant libraries are bundled with WebLogic Server to make it easier for our customers to build Java applications out of the box.

XML tags define the targets to build, dependencies among targets, and tasks to execute in order to build the targets. Ant provides a javac task for compiling Java source files. The following example compiles all of the Java files in the current directory into a classes directory.

Running arbitrary Java programs from Ant can be accomplished by either writing custom Ant tasks or by simply executing the program using the java task.

Tasks such as ejbc or rmic can be executed using the java task as shown below:. The above example uses the fork system call to create a Java process to run ejbc. The example supplies a system property to define weblogic. The classpath for the called Java process is specified using the classpath tag. As previously discussed, J2EE applications are packaged as JAR files containing a specific file extension depending on the component type:.

Web Applications are packaged as WAR files. Resource Adapters are packaged as RAR files. Enterprise Applications are packaged as EAR files.

These components are structured according to the J2EE specifications. Ant provides tasks that make the construction of these JAR files easier. Using Ant, you can specify the pathname as it appears in the JAR archive, which may differ from the original path in the file system.

This ability is useful for packaging deployment descriptors in which J2EE specifies an exact location in the archive , which may not correspond to the location in your source tree. See the Apache Ant online documentation pertaining to the ZipFileSet command for related information. Specify the standard XML deployment descriptor using the webxml parameter.

Use a second ZipFileSet command to package all the images in an images directory. Finally, add all the. You can achieve the same result by staging the files in a directory that directly corresponds to the structure of the WAR file and creating a JAR file from that directory. Using special features of the Ant JAR tasks eliminates the need to copy files into a specific directory hierarchy. By default, Ant loads the build. Use the following command to build and deploy an application using the build script shown above:.

Your applications may use many different Java classes, including enterprise beans, servlets and JavaServer Pages, startup classes, utility classes, and third-party packages. WebLogic Server deploys applications in separate classloaders to maintain independence and to facilitate dynamic redeployment and undeployment. Because of this, you need to package your application classes in such a way that each component has access to the classes it depends on.

In some cases, you may have to include a set of classes in more than one application or component. This section describes how WebLogic Server uses multiple classloaders so that you can stage your applications successfully. A classloader is a Java class that locates and loads a requested class into the Java virtual machine JVM. A classloader resolves references by searching for files in the directories or JAR files listed in its classpath.

Most Java programs have a single classloader, the default system classloader created when the JVM starts up. WebLogic Server creates additional classloaders when it deploys applications because these classloaders can be destroyed in order to undeploy the application. This allows WebLogic Server to redeploy modified applications without having to restart the server.

Classloaders are hierarchical. When you start WebLogic Server, the Java system classloader is active and is the parent of all subsequent classloaders that WebLogic Server creates. A classloader always asks its parent for a class before it searches its own classpath, but a parent classloader does not consult its children. Because the search only proceeds upwards in the classloader hierarchy, this also means that a child classloader cannot locate classes on a sibling's classpath.

The search protocol also clarifies how duplicate classes are handled in Java. Posted: 04 Nov Premiered: 15 Oct Posted: 04 Nov Premiered: 04 Nov Posted: 11 Sep Premiered: 11 Sep Jazz is a scalable, extensible team collaboration platform for seamlessly integrating tasks across the software lifecycle. Posted: 19 Aug Premiered: 19 Aug Posted: 03 Aug Premiered: 03 Aug SQL compliance manager goes beyond traditional approaches with its real-time monitoring and auditing of all data access, updates, data structure modifications and changes to security permissions.

Take a test drive now. Posted: 22 Jul Premiered: 22 Jul Posted: 21 Jul Premiered: 21 Jul The following javax. Xcertificate" for the SSL client certificate.

For an SSL client certificate, the filter performs the following: Retrieves SSL client certificate from the request object, if it is available Instantiates j ava. XCertificate object xcert based on the client certificate Creates an array of type java. XCertificate and adds objects to the array Sets the attribute on the request object "java. Authorization is the process of granting the permissions and privileges entitled to the user. Methods based on the Java2 Security Model: Servlet. These steps assume the following:.

This chapter elaborates on the information in Chapter 5 and discusses available configuration options. If you do not have Ant installed, you can download it from:.