HttpClient 和HttpURLConnection 对比

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package com.example.administrator.downloadimage;import android.content.Context;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.net.ParseException;import android.util.Log;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.HttpClient;import org.apache.http.client.methods.HttpGet;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.util.EntityUtils;import java.io.BufferedInputStream;import java.io.ByteArrayOutputStream;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.io.UnsupportedEncodingException;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;/** * Created by Administrator on 2017/5/4. */public class HttpUtils {    // 判断网络是否连接    public static boolean isNetWorkConn(Context context) {        // 需要权限：访问网络状态        ConnectivityManager manager = (ConnectivityManager) context                .getSystemService(Context.CONNECTIVITY_SERVICE);        NetworkInfo info = manager.getActiveNetworkInfo();        if (info != null) {            return info.isConnected();        } else {            return false;        }    }    // 下载获取数据    public static byte[] httpClientLoadData(String path) {        byte[] result = null;        try {            HttpClient httpClient = new DefaultHttpClient();            HttpGet httpget = new HttpGet(path);            HttpResponse response = httpClient.execute(httpget);            if (response.getStatusLine().getStatusCode() == 200) {                HttpEntity entity = response.getEntity();                result = EntityUtils.toByteArray(entity);            }        } catch (ClientProtocolException e) {            e.printStackTrace();        } catch (ParseException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        }        return result;    }    // 下载获取数据    public static byte[] httpURLConnLoadData(String path) {        // 原生流操作        BufferedInputStream bis = null;        ByteArrayOutputStream baos = new ByteArrayOutputStream();        try {            HttpURLConnection huc = (HttpURLConnection) new URL(path).openConnection();            huc.setRequestMethod("GET");            huc.connect();            if (huc.getResponseCode() == 200) {                bis = new BufferedInputStream(huc.getInputStream());                int i = -1;                byte[] bb = new byte[100];                while ((i = bis.read(bb)) != -1) {                    baos.write(bb, 0, i);                    baos.flush();                }                bis.close();                return baos.toByteArray();            }        } catch (IOException e) {            e.printStackTrace();        }        return null;    }    // 下载网络数据到本地    public static void httpURLConnectionLoadData(String path) {        HttpURLConnection con = null;        FileOutputStream fos = null;        BufferedInputStream bis = null;        try {            con = (HttpURLConnection) new URL(path).openConnection();            con.setRequestMethod("GET");            con.setUseCaches(false);// 忽略缓存               // 发送POST请求必须设置如下两行              //con.setDoOutput(true); // 开启输出流            //con.setDoInput(true);            //设置超时            con.setConnectTimeout(5000);//连接超时            con.setReadTimeout(5000);//读取数据超时            // 设置通用的请求属性              con.setRequestProperty("Content-type", "application/json");            con.setRequestProperty("Connection", "Keep-Alive");            con.connect();            if (con.getResponseCode() == 200) {                bis = new BufferedInputStream(con.getInputStream());                //写入本地工程文件中                fos = new FileOutputStream(new File("my-file.txt"));                int len = -1;                byte[] bytes = new byte[1024];                while ((len = bis.read(bytes)) != -1) {                    fos.write(bytes, 0, len);                    fos.flush();                }            }        } catch (MalformedURLException e) {            e.printStackTrace();        } catch (UnsupportedEncodingException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        } finally {            try {                if (bis != null) {                    bis.close();                }                if (fos != null) {                    fos.close();                }            } catch (IOException e) {                e.printStackTrace();            }        }        // 关闭连接        con.disconnect();    }}
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