In traditional, we can use spring boot and different GraphQL component to build up a graphQL server, and then we use frontend framework (Angular etc) to call GraphQL endpoint.
But is there any way to use Spring MVC, in controller to call GraphQL relative class, to get the data, then put the data into model, and show in frontend jsp or template framework?
Hopefully I can get a github demo, or some document for reference
Related
We have few existing rest apis written in spring boot to fetch different data in our project? Now we are exploring options to use GraphQL. But we don't want rest endpoints & response to change since it is being consumed by many UI/backend applications. Can anyone suggest proper way to use GraphQL within existing API without changing rest endpoints and Response type?
I have a backend api and a frontend client (Angular App) consuming this api, I have to redefine many DTOs form Database Entities (almost 100). I wonder if there is an alternative to transform my entities with much more easier way than using Transformers.
You can use Jackson API to convert the Entity object into DTO or any POJO class objects. Please check below URL for the code example.
https://www.thetechnojournals.com/2019/10/entity-object-conversion-to-dto-object.html
I am creating an application which has a front end developped using Angular, and a backend developped using SpringBoot.
The problem is that the backend has controllers with request mappings and models (services and repositories) and no views , so does it really implement the MVC pattern?
I have read in this article " Spring MVC or Spring Boot" that spring MVC which itslef implements the MVC pattern is a part of spring boot, so basically spring boot is MVC, which is true when you have views and HTML pages in your project, but in my case i can't talk about views since i am sending and recieving JSON data from a restful API.
According to https://www.wikiwand.com/en/Model%E2%80%93view%E2%80%93controller
view means presentation of the model in a particular format.
I think it is good definition. Particular format in case of backend for REST API happen to be JSON or XML.
From the same page
Some web MVC frameworks take a thin client approach that places almost
the entire model, view and controller logic on the server. In this
approach, the client sends either hyperlink requests or form
submissions to the controller and then receives a complete and updated
web page (or other document) from the view; the model exists entirely
on the server.
In your case the View would be the front-end. The View is the presentation of the data in a human understandable way.
So I believe the View in your case would be the front-end app.
I have a spring mvc application which runs correctly,now another colleague wants to call the same functions from another application but he needs REST URL of my functions.
how is it possible to provide the same functionality through spring REST?
is it just with new annotations .please provide some resource to show me how to do it.
when server has a service, only legal clients which had any contracts with server can access it. And clients can use service by the way such as: use RestTemplate to get/post request to URL of service, and clients can get data as JSON, or XML type if you have an equivalent object as this image:
Also, a service can be support as a interface, ex: google search is a service supported by google, but it's not rest service.
If you know each other URL address you can consume each other REST API from java code by using RestTemplate object.
I would advise you to go over the Spring starter guide which deals with that issue, here is the link (Consuming a RESTful Web Service):
https://spring.io/guides/gs/consuming-rest/
I have a working Spring BOOT application that has a custom security provider and REST API controllers. I would also like to add a GUI interface to the application for access from a browser through jsps, html, and a login page which uses my existing custom security provider I used with the REST APIs. Maybe using Spring MVC since that is needed for the REST API support. I could not find a single example of doing this on the web. Also, I do NOT want to use any web XML based configuration files - as I am currently only using Java config for the implementation of the REST APIs. I am also currently using SSL for REST API access through SSL in a Jetty embedded web container. Please help if you can? Thanks in advanced.
Paul there is a rather large amount of information on view technologies that are compatible with Spring BOOT. You need to decide what you want to use and do relevant research for it.
As a guiding hand here check this page out for just one of the many types:
http://kielczewski.eu/2014/04/spring-boot-mvc-application/
You may follow this procedure :
lets assume that u have an endpoint for which you need both REST and view controllers,your REST endpoint exposes your data in JSON as RESTController and your view Endpoint returns the view name as Simple old controller.
lets say your base url is at localhost:8080 and your endpoint of interest is /students
you could have both in same application but at different endpoints like this :
REST : localhost:8080/api/v1/students -- exposes json
VIEW : localhost:8080/students -- returns a view
hope this make clear ..