Network Deployment (Distributed operating systems), v8.0 > End-to-end paths > Web services - RESTful services > Use handlers to enhance request and response processing
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Configure the JAX-RS application.
Step 3: Use handlers to enhance request and response processing JAX-WS
We can configure JAX-RS applications in multiple ways depending on your needs.
To take advantage of the Java EE 6 functionality, you can use the annotation scanning capabilities. By using annotation scanning, you can omit a JAX-RS javax.ws.rs.core.Application subclass or have a minimally defined javax.ws.rs.core.Application subclass. Alternatively, you can specify the IBM JAX-RS servlet or filter to use the functionality available in the IBM JAX-RS servlet and filter.
Use one of the JAX-RS v1.1 configuration methods, you can omit a javax.ws.rs.core.Application subclass in the application or have a javax.ws.rs.core.Application subclass that returns an empty set of classes to inform the JAX-RS runtime environment to find and use all the JAX-RS classes in the application. You might want to use this method when you do not want to have to manually add every relevant JAX-RS class to a javax.ws.rs.core.Application subclass as you develop the application.
By specifying the specific IBM JAX-RS servlet and filter, you can take advantage of and ensure specific IBM JAX-RS behavior. For example, using the IBM JAX-RS filter can be helpful in developing a web application with a mix of JAX-RS resources and JSP files with the same URL patterns.
Even though there is a JAX-RS V1.1 configuration method that supports the use of an optional web.xml file, to specify security constraints or roles, or to take advantage of other features enabled using a web.xml file, specify the information in a web.xml file.
Choose one of the following three methods to configure your JAX-RS application:
Define the resources in JAX-RS web applications.
Procedure
- Configure JAX-RS applications using JAX-RS 1.1 methods
Use this method to use the annotation scanning capabilities or to use the JAX-RS 1.1 configuration methods. We can use the annotation scanning capabilities to promote application portability, to minimize the amount of configuration code, or to dynamically modify the application without changes to the application code.
- Configure the web.xml file for JAX-RS servlets
Use this method if you want to specify features that are enabled using servlet initialization parameters to change the behavior and ensure that you get the IBM JAX-RS servlet. When using servlets, you can define a servlet path in the web.xml file that is appended to the base URL.
- Configure the web.xml file for JAX-RS filters
Use this method if you want to use the filter when we have JSPs, other servlets and filters, and JAX-RS resources with a mix of URL patterns. We can configure the web.xml file to define filters that indicate the possible URLs on which the filter can be invoked.
Support information (generally applicable)
What to do next
Implement user handlers for your JAX-RS application.
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