用kotlin协程中断HttpURLConnection

import kotlinx.coroutines.*
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.withContext
import java.net.HttpURLConnection
import java.net.URL

suspend fun makeHttpRequest(url: String): String {
    return withContext(Dispatchers.IO) {
        val connection = URL(url).openConnection() as HttpURLConnection
        connection.requestMethod = "GET"
        val responseCode = connection.responseCode
        if (responseCode == HttpURLConnection.HTTP_OK) {
            val response = connection.inputStream.bufferedReader().use { it.readText() }
            response
        } else {
            throw Exception("HTTP request failed with response code $responseCode")
        }
    }
}

fun main() {
    val job = GlobalScope.launch {
        try {
            val response = makeHttpRequest("https://example.com")
            println("Response: $response")
        } catch (e: Exception) {
            println("Error: ${e.message}")
        }
    }

    // 取消协程
    job.cancel()

    // 等待协程执行完成
    runBlocking {
        job.join()
    }
}