Previous sections have shown how to return HTTP responses and it is possible to return HTTP errors using the same mechanism. However, sometimes when programming in Java it is more natural to use exceptions for HTTP errors. The following example shows…

1. Maven Dependency <properties> <jersey.version>1.19.1</jersey.version> </properties> <dependencies> <dependency> <groupId>com.sun.jersey</groupId> <artifactId>jersey-core</artifactId> <versi…

Jersey JSON support comes as a set of JAX-RS MessageBodyReader<T> and MessageBodyWriter<T> providers distributed with jersey-json module. These providers enable using three basic approaches when working with JSON format: POJO support JAXB base…

Maven Dependencies The following Maven dependencies need to be added to the pom: <dependency> <groupId>com.sun.jersey</groupId> <artifactId>jersey-server</artifactId> <version>1.19.1</version> </dependency>…

Root resource classes are POJOs (Plain Old Java Objects) that are annotated with @Path have at least one method annotated with @Path or a resource method designator annotation such as @GET, @PUT, @POST, @DELETE. Resource methods are methods of a reso…

JAX-RS provides a deployment agnostic abstract class Application for declaring root resource and provider classes, and root resource and provider singleton instances. A Web service may extend this class to declare root resource and provider classes.…

Parameters of a resource method may be annotated with parameter-based annotations to extract information from a request. A previous example presented the use @PathParam to extract a path parameter from the path component of the request URL that match…

Previous sections on @Produces and @Consumes referred to MIME media types of representations and showed resource methods that consume and produce the Java type String for a number of different media types. However, String is just one of many Java typ…

Conditional GETs are a great way to reduce bandwidth, and potentially server-side performance, depending on how the information used to determine conditions is calculated. A well-designed web site may return 304 (Not Modified) responses for the many…

By default the life-cycle of root resource classes is per-request, namely that a new instance of a root resource class is created every time the request URI path matches the root resource. This makes for a very natural programming model where constru…