HttpClient--HttpGet的使用样式

HttpClient--HttpGet的使用样式

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

/**
 * Created with .
 * Date: 14-5-28
 * Time: 下午12:17
 * To change this template use File | Settings | File Templates.
 */
public class LoadImageClient {
    CloseableHttpClient httpclient = HttpClients.createDefault();

    public HttpGet doGet(String url) {
        HttpGet httpGet = new HttpGet(url);
        httpGet.addHeader("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
        httpGet.addHeader("Connection", "Keep-Alive");
        httpGet.addHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:29.0) Gecko/20100101 Firefox/29.0");
        httpGet.addHeader("Cookie", "");
        return httpGet;

    }

    public void loadImage(int tid) {

        CloseableHttpResponse response = null;
        CloseableHttpResponse resImg = null;
        try {

            HttpGet httpGet = doGet("http://www.xxx.com/tt?tid=" + tid);

            response = execute(httpGet);

            if (response == null){
                return;
            }


            String result = EntityUtils.toString(response.getEntity());

            JSONObject json = new JSONObject();
            JSONObject jsonObject = json.parseObject(result.toString().trim());
            Object files = jsonObject.get("pictures");

            if (files != null) {
                JSONArray jsonArray = (JSONArray) files;
                if (jsonArray.size() <= 0) return;
                JSONObject o = (JSONObject) jsonArray.get(jsonArray.size() - 1);

                String url = (String) o.get("url");
               /* if(!url.contains("/sns/")){
                    return;
                }*/

                String fileName = url.substring(url.lastIndexOf("/") + 1);
                System.out.println(Thread.currentThread().getName() + "--" + url);

                File file = new File("e:\\pic\\" + fileName.trim());

               /* if (!file.exists()) {
                    file.createNewFile();
                }*/

                FileOutputStream outputStream = new FileOutputStream(file);

                HttpGet httpGetImg = doGet(url);
                resImg = execute(httpGetImg);
                if (resImg == null) return;

                InputStream imgIs = resImg.getEntity().getContent();
                BufferedInputStream bis = new BufferedInputStream(imgIs);
                byte[] bytes = new byte[1024 * 1024];
                int length = 0;
                while ((length = bis.read(bytes)) > -1) {
                    outputStream.write(bytes, 0, length);
                }

                outputStream.flush();
                outputStream.close();
            }else{
                System.out.println(Thread.currentThread().getName() + "--" + tid);
            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            close(response);
            close(resImg);
        }
    }

    private void close(CloseableHttpResponse response) {
        try {
            if (response != null) response.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private CloseableHttpResponse execute(HttpGet httpGet) {
        CloseableHttpResponse response = null;
        try {

            response = httpclient.execute(httpGet);

            int status = response.getStatusLine().getStatusCode();
            if (status >= 200 && status < 300) {
                return response;
            }

            response.close();
            return null;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    public static void main(String[] args) {
        final LoadImageClient loadImage = new LoadImageClient();
        List threads = new ArrayList();

        for (int i = 10; i < 100; i++) {
            final int t = i * 10;

            Thread thread = new Thread(new Runnable() {
                @Override
                public void run() {
                    try {

                        int tid = 339000 + t;
                        for (int j = 10; j >=0 ; j--) {
                            loadImage.loadImage(tid + j);
                        }
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            });
            threads.add(thread);

        }

        for (Thread thread : threads) {
            thread.start();
        }

    }
}

http://blog.csdn.net/xxb2008