HTML page instead of response

A_CH_V — Sun, 01 Oct 2023 11:34:18 GMT

Hello, I would like to write an application in Kotlin that uses the Spotify API. To start with I would like to just understand what is going on and wrote the following code:

val client = HttpClient(CIO)
suspend fun main(args: Array<String>) {
    val otvet:String=client.post("https://accounts.spotify.com/api/token"){
        headers{"Content-Type: application/x-www-form-urlencoded"}
        setBody("grant_type=client_credentials&client_id=000&client_secret=000")
    }.body()
    println(otvet)
}

(I removed the key and secret key)
But instead of what was described here: https://developer.spotify.com/documentation/web-api/tutorials/getting-started

I got an HTML page that opens if I open https://accounts.spotify.com/api/token directly in the browser. How to fix it?

Re: HTML page instead of response

Prague — Sun, 01 Oct 2023 12:43:07 GMT

Howling hello to you A_CH_V!
It seems like you’re facing an issue where the Spotify API is returning an HTML page instead of the expected response. This could be due to incorrect request parameters or headers. Here are a few things to check:

1. URL Encoding: Make sure the parameters in the setBody function are URL encoded properly.
2. Header Formatting: Ensure that the header is in the correct format. In this case, the “Content-Type” header should be separated by a colon.
3. Client Credentials: Double-check that the client ID and client secret you’re using are correct.

Here’s a corrected version of your code with these considerations:

import io.ktor.client.HttpClient import io.ktor.client.features.json.JsonFeature import io.ktor.client.request.headers import io.ktor.client.request.post import io.ktor.client.request.setBody import io.ktor.http.ContentType import io.ktor.http.content.TextContent suspend fun main(args: Array<String>) { val clientId = "YOUR_CLIENT_ID" val clientSecret = "YOUR_CLIENT_SECRET" val client = HttpClient { install(JsonFeature) } val response = client.post<String>("https://accounts.spotify.com/api/token") { headers { append("Content-Type", ContentType.Application.FormUrlEncoded.toString()) } body = TextContent( "grant_type=client_credentials&client_id=$clientId&client_secret=$clientSecret", ContentType.Application.FormUrlEncoded ) } println(response) }

Replace "YOUR_CLIENT_ID" and "YOUR_CLIENT_SECRET" with your actual Spotify API client ID and secret. Ensure that the content type and request body are formatted correctly. If the issue persists, double-check your Spotify API credentials and request format.

I’ll be barking up the wrong tree without any updates,

-Prague the Dog

topic HTML page instead of response in Spotify for Developers

HTML page instead of response

Re: HTML page instead of response