In this blog post, I will share how to copy properties from a DTO object to an Entity object and then back from an Entity object to a DTO object. DTO stands for Data Transfer Object, and it is a simple, Plain Old Java Object that typically contains class properties and getter and setter methods…
Read More DTO to Entity Conversion in JavaIn this blog post, I am going to share with you how to configure Spring Data JPA in a Jersey 2 Container Deployable Web App. Spring Data JPA makes it much easier and more convenient to persist and read data from the database and when I needed to tie together Spring Data JPA and Jersey 2 Web…
Read More Configure Spring Data JPA in Jersey 2 JAX-RS AppWith this blog post, I am going to share what I needed to do to make JPA work in my Jersey 2 Web Services App. I have created my Jersey 2 app using the following maven snippet: mvn archetype:generate -DarchetypeGroupId=org.glassfish.jersey.archetypes \ -DarchetypeArtifactId=jersey-quickstart-webapp -DarchetypeVersion=2.26 I then opened pom.xml and added a few new dependencies which I…
Read More Configuring JPA in Jersey 2 Web AppAdding dependency injection support into Jersey 2 Web Services application that uses HK2 is not very straightforward. So, I created this page to document things I needed to do in my Jersey 2 RESTful Web Services app to make the Dependency Injection work. Hope you will find it useful. Create a new class that extends AbstractBinder. This…
Read More Dependency Injection with HK2 in Jersey and JAX-RSCreate a Servlet Container deployable Jersey web application Create new Jersey web application using Maven. The project created with the below jersey-quickstart-webapp archetype can be built and deployed to a servlet container like for example Apache Tomcat. mvn archetype:generate -DarchetypeGroupId=org.glassfish.jersey.archetypes \ -DarchetypeArtifactId=jersey-quickstart-webapp -DarchetypeVersion=2.26 POM.XML Dependency to Support JSON To support JSON in your Jersey Web App add…
Read More RESTful Web Services with Jersey and Spring Data JPA – Cheat SheetIn this blog post I am going to share with you a way to create a RESTful Web Service to: Create a new user profile, Generate and save in database a user secure user password rather than an actual password provided by user, Return back as a response a custom user profile object(JSON) with information that…
Read More RESTful Web Service to Save a New User in DatabaseWhen building RESTful Web Services for your Mobile app with Java JAX-RS and Jersey you can use any Java Servlet container to deploy and run your final .WAR file. But if you use Jetty then there is a very quick way to build and run your application using Maven and jetty-maven-plugin. Below is a short…
Read More Add Jetty Maven Plugin to Your JAX-RS ProjectIn this short blog post I am going to share with you how to create a new Amazon AWS S3 bucket in Java and how to set permissions on it so that any user can read files from it but only you, the owner will have write access. You can use the code below with…
Read More Create Amazon AWS S3 Bucket in JavaOften we need to load up and read a value from a property file which is stored in a WEB-INF folder of our web app. In the below example I am going to share with you how to create a web service which accepts a key, reads key value from a property file and returns…
Read More Load Properties File from WEB-INF in JAX-RS Jersey AppHibernate is a great framework to use to persist data into a database when building RESTful Web Services for your mobile application with Jersey and JAX-RS. In most of the projects I have participated when designing RESTful Web Services for Mobile App we used MySQL database server and Hibernate framework to store user data which…
Read More Persist Java Object in MySQL Database With HibernateIf one of you RESTful Web Service Endpoints built with Jersey JAX-RS needs to initiate image download, you can use the following example to let user download an image stored on your server when they access a certain web service end point. The below example downloads a PNG image specified by @Produces(“image/png”) but you can easily…
Read More Image Download in Jersey JAX-RSTo make our Jersey RESTful Web Service Application be able to @Autowire service classes and inject Java Beans we will need to add to it a support for Spring Dependency Injection(DI) and below I am going to share with you how to do it. To add Spring DI support to my JAX-RS application, I am…
Read More Add Spring Dependency Injection Support to a JAX-RS Jersey AppEarlier I have shared with you how to use JAX-RS to access HTTP GET Request and how extract URI Query Parameters and how to read Path Parameters. In this blog post I am going to share with you how to handle HTTP POST request and how to read the content of HTTP Request Body as…
Read More Jersey HTTP Post Example@QueryParam annotation allows us to read the request parameter values which were passed as a part of URL query string for example: site.com/api/users/r4ghtaf43c3n/messages?start=1&limit=50 where site.com is your web site domain name, /api/users/ is the path to your Root Resource, r4ghtaf43c3n is the value of specific user id and can be read with @ParthParam annotation, /messages is…
Read More JAX-RS @QueryParam. Reading URL Query Parameters.In this blog post I am going to share with you how to handle HTTP GET request in your Java Web Service created with Jersey framework and how to response back with XML or JSON Response. If you do not have your Java RESTful Web Service created yet please follow the below link to a…
Read More Jersey HTTP GET Example