hateoas | Code samples to implement HATEOAS with Spring MVC | Model View Controller library

 by   acogoluegnes Java Version: Current License: No License

kandi X-RAY | hateoas Summary

kandi X-RAY | hateoas Summary

hateoas is a Java library typically used in Architecture, Model View Controller, Spring Boot, Spring applications. hateoas has no bugs, it has no vulnerabilities, it has build file available and it has high support. You can download it from GitHub.

Code samples to implement HATEOAS with Spring MVC.

            kandi-support Support

              hateoas has a highly active ecosystem.
              It has 10 star(s) with 11 fork(s). There are 2 watchers for this library.
              It had no major release in the last 6 months.
              There are 4 open issues and 0 have been closed. On average issues are closed in 1862 days. There are no pull requests.
              It has a positive sentiment in the developer community.
              The latest version of hateoas is current.

            kandi-Quality Quality

              hateoas has 0 bugs and 0 code smells.

            kandi-Security Security

              hateoas has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              hateoas code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              hateoas does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              hateoas releases are not available. You will need to build from source code and install.
              Build file is available. You can build the component from source.
              hateoas saves you 211 person hours of effort in developing the same functionality from scratch.
              It has 517 lines of code, 38 functions and 9 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed hateoas and discovered the below as its top functions. This is intended to give you an instant insight into hateoas implemented functionality, and help decide if they suit your requirements.
            • List of contacts
            • Gets the id
            • The name of the lastname
            • Gets the first name of the sentence
            • Build a page link
            • Returns a builder based on the current request URI
            • Returns the number of pages in the page
            • Get the last page
            • Is the first page
            • Returns true if there are no more pages
            • Returns true if there are more pages
            • Check if page has content
            • Returns the page size
            • Returns the total number of elements in this page
            • Returns the sort
            • Returns the number of elements in the page
            • Retrieves the current page number
            • Returns the content of the page
            • Returns a collection of contacts
            • Returns an iterator over the pages
            Get all kandi verified functions for this library.

            hateoas Key Features

            No Key Features are available at this moment for hateoas.

            hateoas Examples and Code Snippets

            No Code Snippets are available at this moment for hateoas.

            Community Discussions


            Spring Boot: combining Webflux, OAuth2 and HATEOAS
            Asked 2021-May-30 at 20:53

            I am trying to build a Spring Boot application that combines Webflux, OAuth2 and HATEOAS. Building a minimal application with Webflux and OAuth2 works OK, but as soon as I add HATEOAS, my minimal test fails.




            Answered 2021-May-30 at 20:53

            org.springframework.boot:spring-boot-starter-hateoas is indeed incompatible with org.springframework.boot:spring-boot-starter-webflux so instead of using org.springframework.boot:spring-boot-starter-hateoas, pull in the Spring HATEOAS dependency itself:

            Source https://stackoverflow.com/questions/67759792


            Spring WebClient does not read hypermedia links
            Asked 2021-May-28 at 09:50

            I am reading from an external API with hypermedia links and OAuth2 authentication using Spring's WebClient. When accessing the API the JSON data is correctly converted to model objects but the supplied HAL links are either omitted if the model object extends Spring HATEOAS RepresentationModel or give a NullPointerException when the model object extends EntityModel. I suspect a problem with the hypermediaWebClientCustomizer but was not able to solve it as of now.

            I tried reading the JSON with a Traverson client in a testcase. That was basically working, if i replaced relative URIs with absolute URIs and the application/json header with a application/hal+json header. I would go on with Traverson but besides these two problems Traverson requires a RestTemplate (OAuth2RestTemplate in this case), which is no longer available in our Spring version.

            Any ideas if there is a problem with the configuration or what else could go wrong?

            This is my configuration:

            dependencies (in part)



            Answered 2021-Apr-01 at 12:55

            It seems the content-header hal+json was the missing piece, although i'm sure quite sure i tried this before. Probably something else was wrong before that has been fixed in between. At least the test case is now working with this:

            Source https://stackoverflow.com/questions/66881937


            How to import a gradle dependency
            Asked 2021-May-24 at 08:18

            I'm learning Spring Boot. I already declare hateoas dependency and build it successfully. (I use Gradle). But I still can't import EntityModel. What is wrong?



            Answered 2021-May-23 at 14:11

            Make sure you build the project so the dependencies get downloaded, using the build tool in your IDE or from the Terminal first.

            Try importing :

            Source https://stackoverflow.com/questions/67660530


            Issues with Upgrading Spring boot from 2.2.2.Release to 2.4.2 Rlease
            Asked 2021-May-20 at 14:32

            We have an existing application which is working fine with the SpringBoot 2.2.2.RELEASE. Now we tried to upgrade it to the SpringBoot 2.4.2 version and application is not getting started and throws the following error. In the classpath I could see only one spring-webmvc-5.3.2.jar file.

            Below is the pom.xml for the referance:



            Answered 2021-Jan-29 at 14:01


            Error while implementing HATEOAS in Spring Boot Application : java.lang.IllegalArgumentException
            Asked 2021-May-17 at 16:26

            I am working on the spring-boot application and I created a small application for User management and have operation like get-user, create-user etc. These operations were working fine until I used HATEOAS. Now I am getting below error when hit my web-service from POSTMAN.

            Erro in POSTMAN :



            Answered 2021-May-17 at 16:26

            can you send the code for UserDaoService ? I remember I had same issue and then it got solved. Please also review below line, this looks suspicious.

            Source https://stackoverflow.com/questions/67573496


            Make efficient REST-API calls with HATEOAS
            Asked 2021-May-17 at 13:03

            I think I basically understand what HATEOAS is and why you should use it. However, I have some problems with applying this to a real world scenario.

            For example:

            I would like to display a list of appointments in my client application. An appointment consists of a date, a location and a person. All of this information should be displayed in a table.

            My API's response currently looks something like this:



            Answered 2021-May-17 at 12:13

            You confuse REST with a database. You can expand nested resources if that's what your clients want to. HATEOAS is more about adding useful operations to your resources, so you can search, read, paginate, modify, create, delete them if you want to. As of the REST API, you should look at it as if it was a webpage. If you want to see all the appointments in a table along with the edit or delete buttons, then you send back a view model for that table along with the links for edit or delete. The REST client normally runs on server side and the application that uses it is a consumer of the REST service. So the REST service is normally not in direct contact with the user and the REST client does not run in the browser though it can be used this way too with single page JS applications, but it was not designed for this usage.

            Source https://stackoverflow.com/questions/67566510


            Jar built from Gradle multi-module project with Spring Boot doesn't work
            Asked 2021-May-13 at 14:00

            I created spring-boot gradle multi-module project which consisted of 3 modules: controller, service, repository. Main file was situated in Controller-module and named MySpringBootApplication.

            I could build this project (using gradle build) and could get jar-file. But after starting this jar in command line I took the next error:



            Answered 2021-May-13 at 14:00

            The Spring Boot application executable jar file is built by bootJar task, so adding the main-class information via jar won't work either.

            The bootJar task tries to create an executable jar, and that requires a main() method. As a result, you need to disable the bootJar task and enable the jar task (which creates an ordinary jar rather than an executable jar) only for your no executable jar modules.

            Since you did it under subjects {} section controller module will produce a standard jar as well. You may produce standard jar files for other modules excluding controller as follows:

            Source https://stackoverflow.com/questions/67518597


            HATEOAS RepresentationModelAssembler, POST with JSON body returns 500: IllegalArgumentException: Not enough variable values available to expand 'id'
            Asked 2021-Apr-17 at 18:45

            I followed the Spring on Building REST tutorial using HATEOAS at: https://spring.io/guides/tutorials/rest/ and mixed it with JPA and MySQL DB (Maven). When I run the app, I can see the initial 2 tables in MySQL workbench fine (although there is a 3rd one appearing out of nowhere?). If i perform a GET /players, it works fine. When I do a POST Request (http://localhost:8080/players) in Postman with body as JSON: { "playerName":"Pedro" }, I get a 500 status and I get an error from Spring

            Not enough variable values available to expand 'id'] with root cause...

            I would like to achieve full CRUD operations. A lot of doubts arises here, given that playerId is autoincrement, and the parameter registrariondate is a TIMESTAMP. This is secondary, as I guess the problem comes from making use RepresentationModelAssembler in my app, but not quite sure how to handle the responses and the petitions.

            Here the project structure:

            Log of the error:



            Answered 2021-Apr-04 at 11:37

            The method PlayerModelAssembler.toModel(Player player) uses PlayerController.one(@PathVariable Long playerId) to generate a self link.

            If the name attribute of the annotation @PathVariable is not provided, Spring expects the parameter name is same as the name surrounded by {} in @GetMapping.

            In your original code, the parameter name playerId is different from id. So to fix it,

            Source https://stackoverflow.com/questions/66917742


            Dto extending RepresentationalModel always returns "link:[]" in tests
            Asked 2021-Apr-09 at 08:34

            I was testing my Controllers with MockMvc but I needed Mockito's when method. When creating a new instance of UserDTO that extends RepresentationalModel from Spring Hateoas, it always returns :



            Answered 2021-Apr-09 at 08:34

            Answering my own problem since its super trivial. I just needed a toString method in my DTO class

            Source https://stackoverflow.com/questions/66718439


            How to use Java Generics for creating HAL links for entities
            Asked 2021-Apr-07 at 15:21

            I am using Springboot v 2.3.2.

            I have different entity class say A and B. Now after performing the CRUD operations I need to return responses in HAL format. Currently I have created methods in each controller classes. But overtime I can see that these are similar in nature. Hence I am thinking of refactoring it and applying Java Generics.

            Here is a code snippet. Please guide how can I make this change or there is some other better way.

            In both these methods apart from type of entity everything is same.



            Answered 2021-Apr-07 at 15:21

            Here is a way to achieve this.

            Source https://stackoverflow.com/questions/66970605

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install hateoas

            You can download it from GitHub.
            You can use hateoas like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the hateoas component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .


            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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