Android kotlin -从url获取简单字符串

import java.io.BufferedReader
import java.io.InputStreamReader
import java.net.HttpURLConnection
import java.net.URL

fun getStringFromUrl(urlString: String): String {
    val url = URL(urlString)
    val connection = url.openConnection() as HttpURLConnection
    connection.requestMethod = "GET"

    val responseCode = connection.responseCode
    if (responseCode == HttpURLConnection.HTTP_OK) {
        val inputStream = connection.inputStream
        val bufferedReader = BufferedReader(InputStreamReader(inputStream))
        val stringBuilder = StringBuilder()
        var line: String?
        while (bufferedReader.readLine().also { line = it } != null) {
            stringBuilder.append(line)
        }
        bufferedReader.close()
        inputStream.close()
        return stringBuilder.toString()
    } else {
        throw Exception("Failed to fetch data from URL")
    }
}

val urlString = "https://example.com/api/data"
val result = getStringFromUrl(urlString)