Android Kotlin 连接 http

package Util

import android.os.Handler
import android.os.Message
import android.view.View
import android.widget.Button
import java.io.BufferedReader
import java.io.ByteArrayOutputStream
import java.io.IOException
import java.io.InputStream
import java.io.InputStreamReader
import java.io.OutputStream
import java.net.HttpURLConnection
import java.net.MalformedURLException
import java.net.URL
import java.net.URLEncoder

/**
 * Created by Jason_Jan on 2017/7/5.
 */

object HttpUtil {


    private var handler: Handler? = null
    private var my_result: String? = null

    fun httpGet(strUrlPath: String, params: Map<String, String>, encode: String): String {
        var strUrlPath = strUrlPath
        /* byte[] data = getRequestData(params, encode).toString().getBytes();//获得请求体*/
        /* String target="http://emb.mobi/register";*/
        var result: String? = null
        val append_url = getRequestData(params, encode).toString()
        strUrlPath = strUrlPath + "?" + append_url
        try {
            val url = URL(strUrlPath)
            val urlConn = url.openConnection() as HttpURLConnection
            urlConn.connectTimeout = 5000//超时时间
            urlConn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded")//设置头部信息，其实没什么用

            //主角开始登场，不注意就是几个小时的调试，输入流
            val `in` = InputStreamReader(urlConn.inputStream)

            val buffer = BufferedReader(`in`)
            var inputLine: String? = null
            //循环逐行读取输入流中的内容

            result = ""//每次清空数据

            while (buffer.readLine().apply { inputLine = this } != null) {
                result += inputLine!! + "\n"
            }


            `in`.close()
            urlConn.disconnect()


        } catch (e: MalformedURLException) {
            e.printStackTrace()
        } catch (ioe: IOException) {
            ioe.printStackTrace()
            return "err:" + ioe.message.toString()
        }

        return result!!

    }


    private fun getRequestData(params: Map<String, String>, encode: String): StringBuffer {
        val stringBuffer = StringBuffer()        //存储封装好的请求体信息
        try {
            for ((key, value) in params) {
                stringBuffer.append(key)
                        .append("=")
                        .append(URLEncoder.encode(value, encode))
                        .append("&")
            }
            stringBuffer.deleteCharAt(stringBuffer.length - 1)    //删除最后的一个"&"
        } catch (e: Exception) {
            e.printStackTrace()
        }

        return stringBuffer
    }


    fun httpPost(strUrlPath: String, params: Map<String, String>, encode: String): String {
        val data = getRequestData(params, encode).toString().toByteArray()
        try {
            val url = URL(strUrlPath)

            val http = url.openConnection() as HttpURLConnection
            http.connectTimeout = 5000
            http.doInput = true
            http.doOutput = true
            http.requestMethod = "POST"
            http.useCaches = false//使用post方式不能用缓存
            //设置请求体的类型是文本类型
            http.setRequestProperty("Content-Type", "application/x-www-form-urlencoded")
            //设置请求体的长度
            http.setRequestProperty("Content-Length", data.size.toString())
            //获得输出流，向服务器写入数据
            val out = http.outputStream
            out.write(data)

            val response = http.responseCode
            if (response == HttpURLConnection.HTTP_OK) {
                val inputStream = http.inputStream
                return dealResponseResult(inputStream)
            }


        } catch (ioe: IOException) {
            ioe.printStackTrace()
            return "err:" + ioe.message.toString()
        }

        return "-1"
    }


    fun dealResponseResult(inputStream: InputStream): String {
        var resultData: String? = null      //存储处理结果
        val byteArrayOutputStream = ByteArrayOutputStream()
        val data = ByteArray(1024)
        var len = 0
        try {
            while (inputStream.read(data).apply { len = this } != -1) {
                byteArrayOutputStream.write(data, 0, len)
            }
        } catch (e: IOException) {
            e.printStackTrace()
        }

        resultData = String(byteArrayOutputStream.toByteArray())
        return resultData
    }
}

   

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />