Gson

ContentNegotiation provides the built-in Gson converter for handing JSON data in your application.

Add Dependencies

Before registering the Gson converter, you need to include the following artifacts in the build script:

Gradle (Groovy)

Gradle (Kotlin)

Maven

1. implementation "io.ktor:ktor-gson:$ktor_version"

To register the Gson converter in your application, call the gson method:

1. import io.ktor.gson.*

3. install(ContentNegotiation) {
4. gson()
5. }

Inside the gson block, you can access the GsonBuilder API, for example:

1. install(ContentNegotiation) {
2. gson {
3. setPrettyPrinting()
4. disableHtmlEscaping()
5. // ...
6. }
7. }

To learn how to receive and send data, see Receive and Send Data.