Questions tagged [gson]
Gson is Google's open-source library for serializing and deserializing Java objects to/from JSON.
gson
9,830
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Gson serialize null only if value equals a specific pattern
Imagine I have an object that looks like this:
@Getter
@Setter
static class MyObject {
private String firstName;
private String lastName;
private long salary;
}
and then I have:
private ...
- 51
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1
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55
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Parsing JSON data with GSON into a model with JPA persistence
I need to parse JSON data received from an external API and persist it using JPA annotations. I used GSON as the parser, along with a TypeAdapter, because the model has the following simplified ...
- 477
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23
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Expected BEGIN_OBJECT but was BEGIN_ARRAY KOTLIN code
Main.kt:
package org.example
import InfoJogo
import com.google.gson.Gson
import java.net.URI
import java.net.http.HttpClient
import java.net.http.HttpRequest
import java.net.http.HttpResponse....
-1
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1
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41
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How can I use Gson to unmarshal json into different class instances when data is a string-value map?
A brokerage is returning data from a GET for the query "MSFT,AAPL,XYZZ":
{
"MSFT": {
"assetMainType": "EQUITY",
"assetSubType": "COE&...
- 360
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40
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How solve java.lang.NoSuchMethodError for Gson when trying to implement Spotify API in SpringBoot project
Getting below error when trying to run my SpringBoot project which implements the SpotifyAPI from MichaelTheLin:
java.lang.NoSuchMethodError: 'com.google.gson.JsonElement com.google.gson.JsonParser....
- 29
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24
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Android Studio Get data from a user input searched API
I am using Android Studio and I am trying to make it so that whatever the user types into the searchview, it will be passed into the API call as a parameter and then return all the data based on each ...
- 1
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55
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Loading Maven libraries into GUI project
What is the correct way to load and use a library with Maven? I am trying to use the Gson library for my GUI project, but doing so I get errors. These are my steps:
Creating the Maven project works ...
- 9,336
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42
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JSON Syntax Exception when parsing String containing JSON Array using TypeToken via GSON
Am having trouble parsing String containing a JSON array as a List using TypeToken via GSON in my Kotlin program.
dependencies section inside gradle.build.kts:
dependencies {
implementation("...
- 4,990
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45
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LocalDate to JsonObject serialization (Expected BEGIN_OBJECT but was STRING com.google.gson.JsonSyntaxException)
I am having a dateField which is in this format and of type java.time.LocalDate - "dateField":"2024-06-11" in one of the classes.
Class is "ObjectClass"
I am trying to ...
- 164
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11
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Name expected issue - convert Json to class
I am trying to convert Json string into instance of a class.
There is 'Name expected' error as below image.
I could not find any solution from Googling.
I added below dependency into build.gradle(app)...
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2
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54
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How to convert response to my class object?
I am trying to convert response string into a java object (of Temp Class) for further manipulating but I get below error:
Exception in thread "main" com.google.gson.JsonSyntaxException: ...
- 1,980
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3
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40
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Why to use TypeToken for fromJson function?
I have a mapper like
inline fun <reified DTO_TYPE, reified TYPE> DTO_TYPE.toDomainLayer(): TYPE {
val gson = Gson()
val strJson = gson.toJson(this)
val type = object: TypeToken<...
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1
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52
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Server response with null value
Hello i'm creating a rest server using ktor in my android application. It works really well but when i do a call i receive all the data but i don't get null data. What should i do to receive them.
...
- 321
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38
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Using Volley instead of Gson and OkHttpClient to request service:
I'm relatively new to API integration and would appreciate some guidance on transitioning my code from using OkHttpClient and Gson to using Volley and JSONObject for API requests.
Initially, I ...
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41
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Can't load items from mutableStateOf(ListOf) onto composable Jetpack Compose
I'm making an android app with Kotlin and compose and I'm using GSON to parse some JSON that I retrieve from an API. The data is then put into a list and returned from the function. I have a ...
