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【日常Py】百度图片关键词多线程爬虫

January 22, 2019 • Read: 105 • 程序源码

前几天朋友需要大量各种关键词的图片,于是帮她:smiley: 写了一个关于图片的多线程爬虫,爬的是百度图片,同时换了接口,也适用于搜狗图片,360图片;除此之外,还加了一个简单的去重。

脚本用python3写的,用的都是一些基础模块,没有使用框架之类的,反正我也不会,这些模块也已经满足要求。使用过程中某些参数需要自己配置,比如关键词,线程数量等,如果你什么都不会,那不推荐你使用。


爬虫效果:
<center>
2.png
1.png
</center>

百度图片代码:

import requests, queue, os, urllib3, time, threading
from hashlib import md5

urllib3.disable_warnings()  # 忽略ssl报错


def getManyPages(keyword, pages):
    params = {
        'tn': 'resultjson_com',
        'ipn': 'rj',
        'ct': 201326592,
        'is': '',
        'fp': 'result',
        'queryWord': keyword,
        'cl': 2,
        'lm': -1,
        'ie': 'utf-8',
        'oe': 'utf-8',
        'adpicid': '',
        'st': -1,
        'z': '',
        'ic': 0,
        'word': keyword,
        's': '',
        'se': '',
        'tab': '',
        'width': '',
        'height': '',
        'face': 0,
        'istype': 2,
        'qc': '',
        'nc': 1,
        'fr': '',
        'pn': pages,  # 起始数
        'rn': 50,  # 返回数
        'gsm': '1e',
        '1532325785686': ''  # 根据下图修改,这只是一个时间戳
    }
    url = 'https://image.baidu.com/search/acjson'  # 百度图片网址
    try:
        res = requests.get(url, params=params, timeout=(5, 20), verify=False)
        return res.json().get('data')
    except:
        print('百度图片json数据获取失败')
        return []


def Run():
    global Dnum
    while not Plist.empty():
        data2 = Plist.get()
        picpath = FilePath + data2['filename']
        try:
            res = requests.get(data2['url'], timeout=(5, 30), stream=True)
            if res.status_code == requests.codes.ok and int(res.headers['Content-Length']) > 0:
                destr = (str(res.headers['Content-Length']) + data2['url']).encode(encoding='UTF-8')
                m = md5(destr).hexdigest()
                # --------------------------
                if m in Mlist:  # 重复重复跳过!~~
                    print('唯一表示符:' + m + ' ,已重复跳过!~~')
                    continue
                else:
                    Mlist.append(m)
                # --------------------------
                with open(picpath, 'wb') as file:
                    file.write(res.content)
        except requests.RequestException as err:
            Plist.put(data2)
            print('下载失败,稍后重试!' + err)
            continue


if __name__ == '__main__':
    # ------------------------------------------
    KeyWords = '白色轿车'  # 关键词
    Num = 2  # 爬取数量,50的倍数
    Tnum = 100  # 下载线程数
    # ------------------------------------------
    Name = 0  # 顺序命名
    Tlist = list()  # 子线程列表
    Mlist = list()  # 图片唯一表示符
    Plist = queue.Queue(Num * 100)  # 图片下载地址队列
    FilePath = './baidu/' + KeyWords + '/'  # 保存路径,使用相对路径
    Start = time.time()
    if not os.path.exists(FilePath):
        os.makedirs(FilePath)

    for xx in range(Num):
        dataList = getManyPages(KeyWords, xx * 50)
        for x in dataList:
            if 'thumbURL' in x:
                filename = 'baidu_' + KeyWords + '_' + str(Name) + '.jpg'
                data = {'filename': filename, 'url': x['thumbURL']}
                Plist.put(data)
                Name += 1
        print('当前已获取图片数:' + str(Plist.qsize()) + ' ' + str(xx))

    print('实际获取数量可能略少,实际获取数量:' + str(Plist.qsize()))
    print('开始启动下载线程')
    for x in range(Tnum):
        t = threading.Thread(target=Run)
        t.setDaemon(False)
        t.start()
        Tlist.append(t)
    print('所有线程启动完成,全力下载')
    while not Plist.empty() and threading.activeCount() > 1:
        time.sleep(1)
        print('当前线程总数:' + str(threading.activeCount()) + ' 剩余任务数:' + str(Plist.qsize()) + ' 执行耗时:' + str(
            round(time.time() - Start)) + 'S')
        for x in range(len(Tlist)):
            if not Tlist[x].isAlive() and not Plist.empty():
                print('其中一个线程死掉,马上重启')
                Tlist.pop(x)
                t = threading.Thread(target=Run)
                t.setDaemon(False)
                t.start()
                Tlist.append(t)
    print('全部下载完毕,下载需求数:' + str(Num * 50) + ',实际有效下载数:' + str(len(Mlist)) + ',执行总耗时:' + str(
        round(time.time() - Start)) + ' S')

搜狗图片代码:

import requests, queue, os, urllib3, time, threading
from hashlib import md5

urllib3.disable_warnings()  # 忽略ssl报错


def getManyPages(keyword, pages):
    url = 'https://pic.sogou.com/pics?query=' + keyword + '&start=' + str(pages) + '&reqType=ajax'  # 搜狗图片接口
    try:
        res = requests.get(url, timeout=(5, 20), verify=False)
        return res.json().get('items')
    except:
        print('json数据获取失败')
        return []


def Run():
    global Dnum
    while not Plist.empty():
        data2 = Plist.get()
        picpath = FilePath + data2['filename']
        try:
            res = requests.get(data2['url'], timeout=(5, 30), stream=True)
            if res.status_code == requests.codes.ok and int(res.headers['Content-Length']) > 0:
                destr = (str(res.headers['Content-Length']) + data2['url']).encode(encoding='UTF-8')
                m = md5(destr).hexdigest()
                # --------------------------
                if m in Mlist:  # 重复重复跳过!~~
                    print('唯一表示符:' + m + ' ,已重复跳过!~~')
                    continue
                else:
                    Mlist.append(m)
                # --------------------------
                with open(picpath, 'wb') as file:
                    file.write(res.content)
        except requests.RequestException as err:
            Plist.put(data2)
            print('下载失败,稍后重试!' + err)
            continue


if __name__ == '__main__':
    # ------------------------------------------
    KeyWords = '轿车'  # 关键词
    Num = 50  # 爬取数量,48的倍数
    Tnum = 100  # 下载线程数
    # ------------------------------------------
    Name = 0  # 顺序命名
    Tlist = list()  # 子线程列表
    Mlist = list()  # 图片唯一表示符
    Plist = queue.Queue(Num * 100)  # 图片下载地址队列
    FilePath = './sougou/' + KeyWords + '/'  # 保存路径,使用相对路径
    Start = time.time()
    if not os.path.exists(FilePath):
        os.makedirs(FilePath)

    for xx in range(Num):
        dataList = getManyPages(KeyWords, xx * 48)
        for x in dataList:
            if 'thumbUrl' in x:
                filename = 'sougou_' + KeyWords + '_' + str(Name) + '.jpg'
                data = {'filename': filename, 'url': x['thumbUrl']}
                Plist.put(data)
                Name += 1
        print('当前已获取图片数:' + str(Plist.qsize()) + ' ' + str(xx))

    print('实际获取数量可能略少,实际获取数量:' + str(Plist.qsize()))
    print('开始启动下载线程')
    for x in range(Tnum):
        t = threading.Thread(target=Run)
        t.setDaemon(False)
        t.start()
        Tlist.append(t)
    print('所有线程启动完成,全力下载')
    while not Plist.empty() and threading.activeCount() > 1:
        time.sleep(1)
        print('当前线程总数:' + str(threading.activeCount()) + ' 剩余任务数:' + str(Plist.qsize()) + ' 执行耗时:' + str(
            round(time.time() - Start)) + 'S')
        for x in range(len(Tlist)):
            if not Tlist[x].isAlive() and not Plist.empty():
                print('其中一个线程死掉,马上重启')
                Tlist.pop(x)
                t = threading.Thread(target=Run)
                t.setDaemon(False)
                t.start()
                Tlist.append(t)
    time.sleep(3)
    print('全部下载完毕,下载需求数:' + str(Num * 50) + ',实际有效下载数:' + str(len(Mlist)) + ',执行总耗时:' + str(
        round(time.time() - Start)) + ' S')

360图片代码:

import requests, queue, os, urllib3, time, threading
from hashlib import md5

urllib3.disable_warnings()  # 忽略ssl报错


def getManyPages(keyword, pages):
    url = 'http://image.so.com/j?q=' + keyword + '&pn=50&sn=' + str(pages)  # 百度图片网址,pn代表返回数量
    try:
        res = requests.get(url, timeout=(5, 20), verify=False)
        return res.json().get('list')
    except:
        print('百度图片json数据获取失败')
        return []


def Run():
    global Dnum
    while not Plist.empty():
        data2 = Plist.get()
        picpath = FilePath + data2['filename']
        try:
            res = requests.get(data2['url'], timeout=(5, 30), stream=True)
            if res.status_code == requests.codes.ok and int(res.headers['Content-Length']) > 0:
                destr = (str(res.headers['Content-Length']) + data2['url']).encode(encoding='UTF-8')
                m = md5(destr).hexdigest()
                # --------------------------
                if m in Mlist:  # 重复重复跳过!~~
                    print('唯一表示符:' + m + ' ,已重复跳过!~~')
                    continue
                else:
                    Mlist.append(m)
                # --------------------------
                with open(picpath, 'wb') as file:
                    file.write(res.content)
        except requests.RequestException as err:
            Plist.put(data2)
            print('下载失败,稍后重试!' + err)
            continue


if __name__ == '__main__':
    # ------------------------------------------
    KeyWords = '黑色轿车'  # 关键词
    Num = 40  # 爬取数量,50的倍数
    Tnum = 100  # 下载线程数
    # ------------------------------------------
    Name = 0  # 顺序命名
    Tlist = list()  # 子线程列表
    Mlist = list()  # 图片唯一表示符
    Plist = queue.Queue(Num * 100)  # 图片下载地址队列
    FilePath = './360/' + KeyWords + '/'  # 保存路径,使用相对路径
    Start = time.time()
    if not os.path.exists(FilePath):
        os.makedirs(FilePath)

    for xx in range(Num):
        dataList = getManyPages(KeyWords, xx * 50)
        for x in dataList:
            if 'thumb_bak' in x:
                filename = '360_' + KeyWords + '_' + str(Name) + '.jpg'
                data = {'filename': filename, 'url': x['thumb_bak']}
                Plist.put(data)
                Name += 1
        print('当前已获取图片数:' + str(Plist.qsize()) + ' ' + str(xx))

    print('实际获取数量可能略少,实际获取数量:' + str(Plist.qsize()))
    print('开始启动下载线程')
    for x in range(Tnum):
        t = threading.Thread(target=Run)
        t.setDaemon(False)
        t.start()
        Tlist.append(t)
    print('所有线程启动完成,全力下载')
    while not Plist.empty() and threading.activeCount() > 1:
        time.sleep(1)
        print('当前线程总数:' + str(threading.activeCount()) + ' 剩余任务数:' + str(Plist.qsize()) + ' 执行耗时:' + str(
            round(time.time() - Start)) + 'S')
        for x in range(len(Tlist)):
            if not Tlist[x].isAlive() and not Plist.empty():
                print('其中一个线程死掉,马上重启')
                Tlist.pop(x)
                t = threading.Thread(target=Run)
                t.setDaemon(False)
                t.start()
                Tlist.append(t)
    time.sleep(3)
    print('全部下载完毕,下载需求数:' + str(Num * 50) + ',实际有效下载数:' + str(len(Mlist)) + ',执行总耗时:' + str(
        round(time.time() - Start)) + ' S')