JAX-RS RESTful Web Service Tutorials and Examples using Jersey

Using the following JAX-RS Java tutorials you will quickly learn how to create and setup JAX-RS API (Jersey) to implement RESTful web services. All examples and tutorials below will be available for download with full source code and full tested so you can be quickly up and running in no time. We hope you enjoy the tutorials and follow us for the latest updates and tutorials online.

RESTful Web Service using JAX-RS and Jersey

JAX-RS stands for Java API for RESTful Web Services and by using this powerful API developers can easily build REST services. JAX-RS is part of the Java 6 Enterprise Edition.

Jersey RESTful Web Services is an open source framework for developing RESTful Web Services in Java that provides support for JAX-RS APIs and serves as the Official Reference Implementation (JSR 311 and JSR 339).

What is REST?

REST (REpresentational State Transfer) is an architectural style, and an approach to communications that is usually used when developing Web services. REST has gained in popularity over its contender SOAP (Simple Object Access Protocol) because REST is lighter in terms of bandwidth usage. RESTful services are much easier to implement and scale than SOAP. Thus REST is the chosen architecture by service providers like Facebook, Twitter, Amazon, Microsoft, and Google.

REST architecture describes six constraints. These constraints were described in Roy Fielding’s dissertation as Uniform Interface, Stateless, Cacheable, Client-Server, Layered-System, and Code On Demand.

• Uniform Interface – Resources are manipulated via CRUD (create, read, update, delete) operations. CRUD operations are managed via PUT, GET, POST, and DELETE request methods.
• Stateless – In REST the state is contained within the request itself, or as part of the URI, query-string parameters, body or in the headers. After processing the request, the state may be communicated back via the headers, status or response body.
• Cacheable – Responses from the web service to its clients are explicitly labeled as cacheable or non-cacheable. This way, the service, the consumer, or one of the intermediary middleware components can cache the response for reuse in later requests.
• Client Server – This is a key constraint, as it based on separations of concerns. The client/server requirement ensures that a distributed environment exists. It requires the client, that sends requests and a server component that receives the requests. After processing the request, the server may return a response to the client. Error responses may be transmitted as well, which requires the client to be responsible for taking any corrective action.
• Layered System – A client should may not be able to tell whether it is connected directly to the end server, or to an intermediary along the way. Intermediary servers may add security policies, or improve scalability.
• Code On Demand – This is an optional constraint. It allows a client to have logic locally via the ability to download and execute code from a remote server.

JAX-RS Tutorials with Examples using Java

RESTful Web Services with AngularJS, Bootstrap and Java using JAX-RS and Jersey

In this tutorial we will develop a full blown CRUD application using JAX-RS API and Jersey to implement RESTful web services. JAX-RS stands for Java API for RESTful Web Services and by using this powerful API developers can easily build REST services. Jersey RESTful Web Services is an open source framework for developing RESTful Web Services in Java that provides support for JAX-RS APIs.

JAX-RS Security using API-KEY for Authorization

In this tutorial we will discuss how to secure JAX-RS RESTful web services using API-KEY or Service Key for Authorization. This form of security is used to ensure that certain RESTful endpoints are protected against unauthorized use.

JAX-RS Security using Digest Authentication and Authorization

In this Java JAX-RS Digest Authentication and Authorization tutorial we will discuss how to set up digest security for our RESTful web service. This form of access authentication is slightly more complex than the previously discussed JAX-RS Basic Authentication Tutorial.

JAX-RS Security using Basic Authentication and Authorization

In this Java JAX-RS basic authentication and authorization tutorial we will discuss how to set up security for our RESTful web service. We will need to ensure that some of the URIs are protected and only clients that have been authenticated and authorized are able to gain access and make use of them.

Upload and Download Multiple Binary Files using MongoDB

In this Java example we are going to develop multiple file upload capability using RESTful web service using JAX-RS and Jersey. As you will see, uploading multiple files using Jersey is pretty straight forward as it uses HTTP POST with the encoding type of multipart/form-data for the file operations.

Inserting and Retrieving Binary Data with MongoDB using JAX-RS RESTful Web Service

In this Java tutorial we are going to develop file upload and file download capability using RESTful web service using JAX-RS and Jersey storing the contents of files into MongoDB Database using a powerful feature in MongoDB for managing large files called GridFS. The bulk of the framework for this tutorial came from my previous tutorial so you find many similarities between the two posts.

Inserting and Retrieving Binary Data with SQL Server Database using JAX-RS RESTful Web Service

In this Java tutorial we are going to develop file upload and file download capability using RESTful web service using JAX-RS and Jersey storing the contents of the file into SQL Server Database. Our example will be able to store PDF files, Excel files, Word Document files, Powerpoint files, Image files, or any other type of file available us provided we have ample amount of storage space.

File Download Example Using RESTful Web Service with JAX-RS and Jersey

In this Java example we are going to develop file download capability using RESTful web service using JAX-RS and Jersey. As you will see, downloading a File using Jersey is very easy as it uses the HTTP GET for the file operations. In our web service, we will be allowing you to download the file via two mechanisms. You will be able to download by HTTP query parameters via @QueryParam and also by using the path parameters via @PathParam.

JAX-RS Restful Web Services with JNDI Datasource for MySQL in Tomcat

In this tutorial we will discuss how to set up JAX-RS RESTful web services and configure a JNDI Datasource with Connection Pooling in Tomcat and connect to MYSQL Database. JNDI (Java Naming and Directory Interface) provides and interface to multiple naming and directory services.

File Upload Example Using RESTful Web Service with JAX-RS and Jersey

In this Java example we are going to develop file upload capability using RESTful web service using JAX-RS and Jersey. As you will see, uploading a File using Jersey is pretty straight forward as it uses HTTP POST with the encoding type of multipart/form-data for the file operations.

RESTful Web Services @FormParam Example using JAX-RS and Jersey

In this Java example we are going to develop a simple RESTful web service using JAX-RS and Jersey to extract form parameters submitted by a form using @FormParam annotation.

RESTful Web Services @MatrixParam Example using JAX-RS and Jersey

In this Java example we are going to develop a simple RESTful web service using JAX-RS and Jersey to extract matrix parameters from the request URL using the @MatrixParam annotations.

RESTful Web Services @QueryParam Example using JAX-RS and Jersey

In this Java example we are going to develop a simple RESTful web service using JAX-RS and Jersey to extract query parameters from the request URL using the @QueryParam annotation.

RESTful Web Services @PathParam Example using JAX-RS and Jersey

In this Java example we are going to develop a simple RESTful web service using JAX-RS and Jersey to extract path parameters from the request URL using the @PathParam annotation.

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