android http get

        Executors.newSingleThreadExecutor().execute{
            val uri = "https://www.cnblogs.com/hangj"
            val url = URL(uri)
            val con = url.openConnection() as HttpsURLConnection
            con.requestMethod = "GET"
            con.setRequestProperty("Connection", "keep-alive")
            con.setRequestProperty("Accept-Language", "zh-CN,zh;q=0.9,en;q=0.8,zh-TW;q=0.7")

            con.readTimeout = 15000
            con.connectTimeout = 15000
            con.doOutput = false

            con.connect()
            val res =
            if (con.getHeaderField("Content-Encoding") == "gzip") {
                GZIPInputStream(con.inputStream).bufferedReader().readText()
            }else{
                con.inputStream.reader().readText()
            }

            println(res)
        }

1. OkHttp

        val uri = "https://www.cnblogs.com/hangj"
        val client = OkHttpClient.Builder().build()
        val req = Request.Builder()
            .url(uri)
            .header("Connection", "keep-alive")
            .header("Accept", "application/json, text/javascript, */*; q=0.01")
            .get().build()

        val call = client.newCall(req)
        call.enqueue(object: Callback {
            override fun onResponse(call: Call, response: Response) {
                val res =
                if (response.headers["Content-Encoding"] == "gzip"){
                    GZIPInputStream(response.body?.byteStream()).bufferedReader().readText()
//                    response.body?.source()?.let { GzipSource(it) }
                } else {
                    response.body?.string()
                }
                println(res)
            }
            override fun onFailure(call: Call, e: IOException) {
                e.localizedMessage?.let { Log.i("onFailure", it) }
            }
        })