is there any solution other than Moshi, Gson, KotlinX-Serialization to serialize json in Android? We should not add anything to build.gradle while using technology. We should not download a library from here.
Is there a method on Android just like Codable on iOS? Also, I think how we should do this part is important since Converter will be passed when using it with Retrofit.
Does anyone have experience and advice on this subject?
You can use JSONObject for that.
val json = JSONObject("""{"some":"json"}""")
However, easiest is to use one of the third party frameworks you mentioned to do this.
Related
Sorry for my naive question, I am looking for some tools that would automatically convert JSON objects (that are generated in swagger UI) to a Java class objects in Eclipse.
Are there any such tools or plugins that can integrate swagger code with Eclipse Java and Groovy Grails framework. It would save a lot of time by not rewriting a huge amount of Java code every time when I want to change something in JSON objects.
I suggest to use autorest tool to generate code and models. It supports multiple languages including Java. Here is the github repository autorest
Just follow simple steps-
npm install -g autorest
autorest --input-file=https://******url******/swagger/v1/swagger.json --java --namespace=****namespace*****
You can use Google Gson Library in java.
You could use that or Groovys JSONsluprer but I depending on what you're trying to achieve it might just be easiest if you have a swagger to start with swagger codegen https://github.com/swagger-api/swagger-codegen tools and have it make those for you. If not you can always look to investigate how they did it.
I use the org.json.* classes which are part of the j2objc distribution. The mapping of my DTO classes and the JSON Objects are made by hand so far.
I know there is GSOn and Jackson.
Is there a JSON to Object Mapper library which translates well with J2objc and works well in the translated Objective-C code?
Jackson and GSON are the two best libraries, and both have been translated using j2objc for iOS apps from different teams (no public ports that I'm aware of, though).
If you control the server-side of the app, though, protocol buffers are generally faster than any JSON->Java alternative. That is why they're used by most of Google's iOS apps, including Inbox and Sheets that use j2objc. j2objc now publicly supports protocol buffers.
To convert json data to java object you can use:
Jackson
Gson
Follow this link or this link for nice GSON tutorial.
I personally used GSON, and it is best library for json to java object conversion.
I don't know about conversion part of j2objc but you can follow this answer, if you want to do similar thing with iOS code
Edit
According to this answer, j2objc requires source code for conversion. You will get full source code from here.
Now, the important part, Gson can be converted to j2objc and you can find test repository to test support for gson-2.3 with j2objc here.
I'm quite new to Grails things. here the problem:
I created a simple class exposed as a REST service with grail. (I only use grail for CRUD operation on database).
I have an Java FX application that needs to consume this service to recreate the original object. Is there a clean way to "export" domain class from grails ?
Thx in advance for any help !
You can create common java library for both projects, include in Grails app and JavaFX app. This common library will share common classes. For marshalling/demarshalling JSON you can use Jackson
GSON or Jackson will do what you want.
Take a look at http://grails.org/doc/latest/guide/webServices.html#domainResources.
For example, if you are returning a "book" domain class from your REST service you could use:
render book as JSON
i am block on a problem and i need your expertise.
I downloaded the BasicSyncAdapter of Android , on here
and i succeeded to use it on my android projet, BUT it's work with FeedParser in XML...
And i would like to work with JSON data, so with parser JSON.I found many library like Jackson, Gson..
But i'm afraid to blow all.
So can you help me about this parser..?
Simply use your JSON parser using Android JSON parser to parse your data. You can edit BasicSyncAdapter source code and instead of FeedParser use your own JSON data parser, also make sure you include license information.
I'd like to create a Java web application on top of Google AppEngine.
What is the best way to develop a REST jSON API?
Do I have to write from scratch a servlet that manages the jSON handling or there is a library or something like the SOAP support for web services?
No need to write a servlet from scratch, use JAX RS, it is easy and simple
http://tugdualgrall.blogspot.com/2010/02/create-and-deploy-jax-rs-rest-service.html
Try RESTEasy. It has superb docs and there nice examples to be found. It integrates with Jackson which is IMO the best JSON lib for java.
If you use jersey then you should have a look at Genson http://owlike.github.io/genson/.
It is a full databinding+streaming java<>json library. And as a bonus with jersey you only need to have genson in your classpath and voila! Everything shall work without any configuration.
the answer here might be what you're looking for. (Gson should be able to both generate and parse JSON)
After some research I think that using jersey is a good