java實現批量下載百度圖片搜尋到的圖片

標籤：

就是寫的個小程式，用於記錄一下，方便後續查看，首先感謝下面這個部落格，從這篇文章衍生的吧，大家可以學習下：

http://www.cnblogs.com/lichenwei/p/4610298.html

 

讀了這邊文章，覺得很有意思，就模仿著寫了個，從百度圖片所有並下載到本地，主要思路是一樣的。

貼下代碼：

package com.guo.common;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.OutputStreamWriter;public class IOUtils{    /*     * 唯一執行個體     */    private static IOUtils instance;        /**     * 單例模式     * @return IOUtils執行個體     * @author  count 2015-7-8     */    public static IOUtils getIOUtilsInstance()    {        if (null != instance)        {            return instance;        }        synchronized (IOUtils.class)        {            if (null == instance)            {                instance = new IOUtils();            }                        return instance;        }    }        /**     * 將inputStream轉換成String     * @param is inputStream     * @return 轉換後的Sring     *      * @return String [傳回型別說明]     * @author  count 2015-7-8     */    public String conventInputStream2String(InputStream is)    {        BufferedReader br = new BufferedReader(new InputStreamReader(is));                //安全執行緒 Stringbuilder 線程非安全 StringBuffer        StringBuilder sb = new StringBuilder();                try        {            String line = "";            while (null != (line = br.readLine()))            {                sb.append(line);            }        }        catch (Exception e)        {            System.out.println(e);        }        finally        {            try            {                is.close();                br.close();            }            catch (Exception e2)            {                System.out.println(e2);            }        }                return sb.toString();    }        /**     * 將inputStream寫成檔案儲存在本地     * @param is inputStream流     * @param path 檔案路徑     * @param fileName 檔案名稱     *      * @return void [傳回型別說明]     * @author  count 2015-7-8     */    public void conventInpputStream2File(InputStream is, String path, String fileName)    {        File file = new File(path);                if (!file.exists() || !file.isDirectory())        {            file.mkdirs();        }                file = new File(path + fileName);                OutputStream os = null;                try        {            os = new FileOutputStream(file);                        int length;            byte[] data = new byte[2048];                        while ((length = is.read(data)) != -1)            {                os.write(data, 0, length);            }                    }        catch (FileNotFoundException e)        {            e.printStackTrace();        }        catch (IOException e)        {            e.printStackTrace();        }        finally        {            try            {                is.close();                os.close();            }            catch (Exception e2)            {            }        }    }}

　　

package com.guo.main;import java.io.IOException;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.URL;import java.net.URLEncoder;import com.alibaba.fastjson.JSONArray;import com.alibaba.fastjson.JSONObject;import com.guo.common.IOUtils;public class DownPicFromBaidu{    public static void main(String[] args)    {        /*         * 搜尋索引鍵         */        String wordKey = "girl";                /*         * inputSream         */        InputStream is = null;                try        {            String urlencodeKewy = URLEncoder.encode(wordKey, "GBK");            //百度圖片url，返回圖片的json數組            String baiduImageUrl = "http://image.baidu.com/i?tn=baiduimagejson&width=&height=&word="                    + urlencodeKewy + "&rn=100&pn=2";            URL url = new URL(baiduImageUrl);                        HttpURLConnection connect = (HttpURLConnection) url.openConnection();                        //擷取url對應的inputStream            is = connect.getInputStream();                        //轉換後的String            String baiduImageStr = IOUtils.getIOUtilsInstance()                    .conventInputStream2String(is);                        JSONObject baiduImageJson = JSONObject.parseObject(baiduImageStr);                        JSONArray imageDataJsonArray = baiduImageJson.getJSONArray("data");            System.out.println(imageDataJsonArray.toString());                        for (int i = 0; i < imageDataJsonArray.size() - 1; i++)            {                JSONObject imageJosn = (JSONObject) imageDataJsonArray.get(i);                                System.out.println("一共查到" + (imageDataJsonArray.size() - 1)                        + "張圖片。");                                url = new URL(imageJosn.getString("objURL"));                                try                {                    connect = (HttpURLConnection) url.openConnection();                    is = connect.getInputStream();                                        System.out.println("正在下載第" + i + "張，該圖片的json流是"                            + imageJosn.getString("objURL"));                    System.out.println("圖片名稱：" + imageJosn.getString("di"));                                        IOUtils.getIOUtilsInstance().conventInpputStream2File(is,                            "c:/images/" + wordKey + "/",                            imageJosn.getString("di") + "."                                    + imageJosn.getString("type"));                }                catch (IOException ioe)                {                    System.out.println("正在下載第" + i + "張，該圖片的json流是"                            + imageJosn.getString("objURL"));                    System.out.println("圖片名稱：" + imageJosn.getString("di"));                                        IOUtils.getIOUtilsInstance().conventInpputStream2File(is,                            "c:/images/" + wordKey + "/",                            imageJosn.getString("di") + "."                                    + imageJosn.getString("type"));                }                            }                    }        catch (Exception e)        {            System.out.println(e);        }    }}

　　

可能還有不完善的地方，希望大家指出，繼續完善。

java實現批量下載百度圖片搜尋到的圖片