How to return a JSON response | Together Java | Page 1

gritty wind Dec 5, 2024, 3:12 PM

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I am using react and spring boot for a full stack application
my browser console says the following.
I want a JSON response to displayed

amber summitBOT Dec 5, 2024, 3:12 PM

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<@&987246883653156906> please have a look, thanks.

violet furnace Dec 5, 2024, 3:13 PM

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I would have helped you if I was a professional in java

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Can someone suggest me how can I master java

gritty wind Dec 5, 2024, 3:14 PM

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violet furnace Can someone suggest me how can I master java

I learnt from Telusko

strange raptor Dec 5, 2024, 3:20 PM

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gritty wind I am using react and spring boot for a full stack application my browser console...

you could just simply return "{\"msg\": \"Something\"}"

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OR

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The better solution

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Create a record/pojo which will get automatically serialized into a json when returning

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Like this:

public record TestApiResponse(String message) {
}

@PostMapping("/api/v1")
public ResponseEntity<TestApiResponse> handle() {
  return new ResponseEntity<>(new TestApiResponse("Something"), HttpStatus.CREATED);
}

amber summitBOT Dec 5, 2024, 3:22 PM

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strange raptor Like this: ```java public record TestApiResponse(String message) { } @PostMappi...

Detected code, here are some useful tools:

strange raptor Dec 5, 2024, 3:24 PM

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sorry i didnt realize few things in the code, just fixed it

gritty wind Dec 5, 2024, 3:24 PM

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Just asked GPT


response.put("message", "user already exists");

return new ResponseEntity<>(response, HttpStatus.CONFLICT);

Is this a better way or the one u gave?

amber summitBOT Dec 5, 2024, 3:24 PM

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gritty wind Just asked GPT ```Map<String, String> response = new HashMap<>(); response.put...

Detected code, here are some useful tools:

Formatted code

Map<String, String> response = new HashMap<>();
response.put("message", "user already exists");
return new ResponseEntity<>(response, HttpStatus.CONFLICT);

strange raptor Dec 5, 2024, 3:24 PM

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btw you could just use Map.of("message", "...")

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wait we arent in kotlin

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frick

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lol i keep forgetting

gritty wind Dec 5, 2024, 3:25 PM

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yep

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like this?

strange raptor Dec 5, 2024, 3:25 PM

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anyways

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exists Collections.singletonMap()

gritty wind Dec 5, 2024, 3:26 PM

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Map <String, String> = Map.of("message, "mg")

strange raptor Dec 5, 2024, 3:26 PM

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I forgot no kotlin so you would use Collections.singletonMap()

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not Map.of

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and

gritty wind Dec 5, 2024, 3:26 PM

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Map.of is java

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spring

strange raptor Dec 5, 2024, 3:26 PM

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i messed it with mapOf in kotlin xd

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so like, if you would ever want to reuse this approach, you should create a record instead

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for example

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public record GenericResponse(String message) {}

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in the end, you can use both

gritty wind Dec 5, 2024, 3:28 PM

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ooh i see thank you for helping

violet furnace Dec 5, 2024, 4:23 PM

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gritty wind I learnt from Telusko

What is telusko

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Can u provide link or something similar please

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And ping me when u do

low drum Dec 5, 2024, 4:23 PM

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we typically recommend mooc for learning java on this server 🙂

amber summitBOT Dec 5, 2024, 4:23 PM

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@violet furnace

For learning Java, we recommend MOOC.

It is a completely free introductory Java course created by the University of Helsinki, it is a great way to learn Java from the ground up.

Visit MOOC here:
https://java-programming.mooc.fi
(the course is available in both English and Finnish)

The MOOC teaches a broad introduction to programming in Java in two parts - one at beginner, and another at intermediate level.
The end of the course is marked by creating your own Asteroids game clone!
The MOOC allows using features up to Java 11 - you can install Temurin OpenJDK 11 from the Adoptium project.
To submit exercises for evaluation, you need to configure an Editor/IDE (Integrated Development Environment) with the TMC Plugin.

The course instructions will suggest to use TMCBeans/NetBeans or VS Code for the course, but you can also use IntelliJ, which we generally recommend.

TMCBeans/NetBeans is the easiest to configure - but has the most dated user experience
VS Code is very popular as an editor, but it is quite new for Java Development. Some extra configuration is needed.
IntelliJ arguably has the best user experience and is most widely used Java IDE by professionals.
IntelliJ requires installing a version no newer than 2023.1 - because the IntelliJ TMC Plugin doesn't work with newer installs.
The IntelliJ Community version is completely free and all you need to install the TMC plugin.

To use IntelliJ with the MOOC, simply install the TMC plugin by opening IntelliJ -> File -> Settings -> Plugins and searching for TMC. You will then be able to use IntelliJ to complete MOOC.

About the course - Java Programming

strange raptor Dec 5, 2024, 4:26 PM

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violet furnace And ping me when u do

This is incorrect channel btw

#How to return a JSON response