Python3实现批量下载百度搜索图片
原文请参考：http://blog.csdn.net/guyuealian/article/details/78730200，这里做了部分修改，增加了关键字word定义，下载图片数量的imageNum设置，以及图像保存路径和名字的设置
需要requests模块的支持，直接使用pip安装即可，命令：pip install requests
# -*- coding: utf-8 -*-import jsonimport itertoolsimport urllibimport requestsimport osimport reimport sysprint("hah")#############################################################word="眼镜" #图片搜索的关键字，目前仅支持单个关键词imageNum =10; #下载图片的数目saveImagePath="glasses3" #保存图片的途径indexOffset=0 #图像命名起始点#############################################################str_table = { '_z2C$q': ':', '_z&e3B': '.', 'AzdH3F': '/'}char_table = { 'w': 'a', 'k': 'b', 'v': 'c', '1': 'd', 'j': 'e', 'u': 'f', '2': 'g', 'i': 'h', 't': 'i', '3': 'j', 'h': 'k', 's': 'l', '4': 'm', 'g': 'n', '5': 'o', 'r': 'p', 'q': 'q', '6': 'r', 'f': 's', 'p': 't', '7': 'u', 'e': 'v', 'o': 'w', '8': '1', 'd': '2', 'n': '3', '9': '4', 'c': '5', 'm': '6', '0': '7', 'b': '8', 'l': '9', 'a': '0'}# str 的translate方法需要用单个字符的十进制unicode编码作为key# value 中的数字会被当成十进制unicode编码转换成字符# 也可以直接用字符串作为valuechar_table = {ord(key): ord(value) for key, value in char_table.items()}# 解码图片URLdef decode(url): # 先替换字符串 for key, value in str_table.items(): url = url.replace(key, value) # 再替换剩下的字符 return url.translate(char_table)# 生成网址列表def buildUrls(word): word = urllib.parse.quote(word) url = r"http://image.baidu.com/search/acjson?tn=resultjson_com&ipn=rj&ct=201326592&fp=result&queryWord={word}&cl=2&lm=-1&ie=utf-8&oe=utf-8&st=-1&ic=0&word={word}&face=0&istype=2nc=1&pn={pn}&rn=60" urls = (url.format(word=word, pn=x) for x in itertools.count(start=0, step=60)) return urls# 解析JSON获取图片URLre_url = re.compile(r'"objURL":"(.*?)"')def resolveImgUrl(html): imgUrls = [decode(x) for x in re_url.findall(html)] return imgUrlsdef downImg(imgUrl, dirpath, imgName): filename = os.path.join(dirpath, imgName) try: res = requests.get(imgUrl, timeout=15) if str(res.status_code)[0] == "4": print(str(res.status_code), ":" , imgUrl) return False except Exception as e: print("抛出异常：", imgUrl) print(e) return False with open(filename, "wb") as f: f.write(res.content) return Truedef mkDir(dirName): dirpath = os.path.join(sys.path[0], dirName) if not os.path.exists(dirpath): os.mkdir(dirpath) return dirpathif __name__ == '__main__': print("=" * 50) # word = input("请输入你要下载的图片关键词：\n") dirpath = mkDir(saveImagePath) urls = buildUrls(word) index = 0 for url in urls: print("正在请求：", url) html = requests.get(url, timeout=10).content.decode('utf-8') imgUrls = resolveImgUrl(html) if len(imgUrls) == 0: # 没有图片则结束 break for url in imgUrls: if downImg(url, dirpath, str(index+indexOffset) + ".jpg"): index += 1 print("正在下载第 %s 张" % (index+indexOffset)) if index==imageNum: break if index==imageNum: print("---------------------下载完成----------------------") print("下载结果保存在脚本目录下的文件夹中，文件名字：" + saveImagePath) break
运行效果：