package com.rockchip.alexa.jacky.utils;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.HttpURLConnection;
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import java.net.MalformedURLException;
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import java.net.URL;
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/**
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* Created by cjs on 2017/4/13.
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* use httpUrlConnection to connect
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*/
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public class HttpClientUtil {
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public static void requestGet(final String urlString,final RequestStateListener stateListener) {
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new Thread(new Runnable() {
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@Override
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public void run() {
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try {
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URL requestUrl = new URL(urlString);
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HttpURLConnection urlConn = (HttpURLConnection) requestUrl.openConnection();
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// 设置连接超时时间
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urlConn.setConnectTimeout(5 * 1000);
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// 设置从主机读取数据超时时间
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urlConn.setReadTimeout(5 * 1000);
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// 设置为Get请求
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urlConn.setRequestMethod("GET");
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urlConn.connect();
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// 判断请求是否成功
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if (urlConn.getResponseCode() == 200) {
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// 解析返回的数据
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stateListener.onRequestResultReceived(urlConn.getInputStream());
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} else {
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stateListener.onRequestFail("With error code: " + urlConn.getResponseCode());
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}
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} catch (MalformedURLException e) {
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stateListener.onRequestFail("Exception: MalformedURLException");
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e.printStackTrace();
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} catch (IOException e){
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stateListener.onRequestFail("Exception: IOException");
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e.printStackTrace();
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}
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}
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}).start();
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}
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/**
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* 将输入流转换成字符串
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*
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* @param is 从网络获取的输入流
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* @return
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*/
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public static String streamToString(InputStream is) {
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try {
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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byte[] buffer = new byte[1024];
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int len ;
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while ((len = is.read(buffer)) != -1) {
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baos.write(buffer, 0, len);
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}
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baos.close();
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is.close();
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byte[] byteArray = baos.toByteArray();
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return new String(byteArray,"UTF-8");
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} catch (Exception e) {
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return null;
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}
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}
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public interface RequestStateListener{
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void onRequestResultReceived(InputStream is);
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void onRequestFail(String failString);
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}
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}
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