python上传时,包含boundary时的处理方式 img_url = [] upload_pic_url = "http://admin.mdt.oujingroup.cn/uploader/img" headers = { 'X-Requested-With': 'XMLHttpRequest', } img_file = open(name, 'rb') multipart_encoder = MultipartEnco
python上传时,包含boundary时的处理方式
img_url = [] upload_pic_url = "http://admin.mdt.oujingroup.cn/uploader/img" headers = { 'X-Requested-With': 'XMLHttpRequest', } img_file = open(name, 'rb') multipart_encoder = MultipartEncoder( fields={ 'file': ('test.jpg', img_file, "image/jpeg"), }, boundary='----WebKitFormBoundaryJ2aGzfsg35YqeT7X' ) headers['Content-Type'] = multipart_encoder.content_type # 请求头必须包含一个特殊的头信息,类似于Content-Type: multipart/form-data; boundary=${bound} try: r = requests.post(upload_pic_url, data=multipart_encoder, headers=headers) print(name) # print(r.text) temp = json.loads(r.text) t = temp['data']['absolute_path'] # return t print(t) return img_url.append(t) except HTTPError as e: print(e)
补充知识:Python模拟浏览器上传文件脚本(Multipart/form-data格式)
http协议本身的原始方法不支持multipart/form-data请求,这个请求由原始方法演变而来的。
multipart/form-data的基础方法是post,也就是说是由post方法来组合实现的,与post方法的不同之处:请求头,请求体。
multipart/form-data的请求头必须包含一个特殊的头信息:
Content-Type,且其值也必须规定为multipart/form-data,同时还需要规定一个内容分割符用于分割请求体中的多个post的内容,如文件内容和文本内容自然需要分割开来,不然接收方就无法正常解析和还原这个文件了。具体的头信息如下:
Content-Type: multipart/form-data; boundary=${bound}
实例:
import os, random, sys, requests from requests_toolbelt.multipart.encoder import MultipartEncoder url = 'http://127.0.0.1/sendmsg' argvstr = sys.argv[1:] argv_dict = {} for argv in argvstr : argv = str(argv).replace("\r\n" , "") DICT = eval(argv) argv_dict.update(DICT) headers = { 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:50.0) Gecko/20100101 Firefox/50.0', 'Referer': url } multipart_encoder = MultipartEncoder( fields={ 'username': argv_dict['username'], 'pwd': argv_dict['pwd'], 'type': 'txt', 'friendfield': argv_dict['friendfield'], 'friend': argv_dict['friend'], 'content': argv_dict['content'], 'file': (os.path.basename(argv_dict['file']) , open(argv_dict['file'], 'rb'), 'application/octet-stream') #file为路径 }, boundary='-----------------------------' + str(random.randint(1e28, 1e29 - 1)) ) headers['Content-Type'] = multipart_encoder.content_type #请求头必须包含一个特殊的头信息,类似于Content-Type: multipart/form-data; boundary=${bound} r = requests.post(url, data=multipart_encoder, headers=headers) print(r.text) #注意,不要设置cookies等其他参数,否则会报错 # 例子/usr/local/python36/bin/python3 /opt/lykchat/test_upload.py "{'username':'lykchat','pwd':'123456','type':'img','friendfield':'1','friend':'xxxx','content':'恭喜发财','file':'/root/b.jpg'}" #等同于curl -F "file=@/root/a" 'http://127.0.0.1/sendmsg?username=lykchat&pwd=123456&type=img&friendfield=1&friend=xxxx&content=恭喜发财'
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