python flask解决上传下载的问题

概述　　记录瞬间   最近为了解决一些新的需求，简单介入了flask对文件的上传和下载的方法，并分别使用python和curl模拟发送   代码： #! /usr/bin/env python3# coding:utf-8import platformfrom werkzeug.utils import secure_filenamefrom flask import Flask,

　　记录瞬间

 

最近为了解决一些新的需求，简单介入了flask对文件的上传和下载的方法，并分别使用python和curl模拟发送

 

代码：

#! /usr/bin/env python3# Coding:utf-8import platformfrom werkzeug.utils import secure_filenamefrom flask import Flask,Jsonify,request,Responseimport osapp = Flask(__name__)UPLOAD_FolDER = ‘upload‘app.config[‘UPLOAD_FolDER‘] = UPLOAD_FolDERapp.config[‘MAX_CONTENT_LENGTH‘] = 20 * 1024 * 1024   # 定义最大上传文件大小为：20MALLOWED_EXTENSIONS = set([‘txt‘,‘png‘,‘jpg‘,‘xls‘,‘JPG‘,‘PNG‘,‘zip‘,‘gif‘,‘GIF‘])run_path = "./"                         # 根据不同的 *** 作系统，定义基础运行路径if platform.system() == "linux":    run_path = r‘/opt/autoUpload/‘if platform.system() == "windows":    run_path = r‘D:/PythonWorkSpace/‘msg = ‘niGEin!‘# 用于判断文件后缀def allowed_file(filename):    return ‘.‘ in filename and filename.rsplit(‘.‘,1)[1] in ALLOWED_EXTENSIONS# 上传文件-upload-file@app.route(‘/uf‘,methods=[‘POST‘],strict_slashes=False)def API_upload():    file_dir = run_path + UPLOAD_FolDER    if not os.path.exists(file_dir):        os.makedirs(file_dir)    f = request.files[‘file‘]                             # 获取上传文件    print(request.values.get("filePath"))        fname = secure_filename(f.filename)    ext = fname.rsplit(‘.‘,1)[1]                          # 获取文件后缀    f.save(os.path.join(file_dir,fname))                  # 保存文件到upload目录    if ext == ‘zip‘:        pass    return Jsonify({"errno": "000000","errmsg": u"success"})# 下载文件-download-file@app.route(‘/df‘,methods=[‘GET‘,‘POST‘])def API_download():    if request.method == ‘GET‘:        fullfilename = request.Json[‘filename‘]        print(fullfilename)    filepath = run_path + ‘tools/‘ + fullfilename    print(filepath)    if not os.path.isfile(filepath):        print("nononononono!!!")        return    # 普通下载    # response = make_response(send_from_directory(filepath,fullfilename,as_attachment=True))    # response.headers["Content-disposition"] = "attachment; filename={}".format(filepath.encode().decode(‘latin-1‘))    # return response    # 流式读取    def send_file():        store_path = filepath        with open(store_path,‘rb‘) as targetfile:            while 1:                data = targetfile.read(1 * 1024 * 1024)  # 每次读取1M                if not data:                    break                yIEld data    response = Response(send_file(),content_type=‘application/octet-stream‘)    response.headers["Content-disposition"] = ‘attachment; filename=%s‘ % fullfilename     return responseif __name__ == ‘__main__‘:    app.run(deBUG=True,port=5002,host=‘0.0.0.0‘)    # 默认127.0.0.1:5000，这里修改了地址和端口方便自己使用

 

调用方式：

# Coding:utf-8import requestsfrom urllib3 import encode_multipart_formdataurl = "http://localhost:5002/up"data = {            "filePath": "123123123"        }header = {}data[‘file‘] = ("xx.zip",open(r"./basedir/xx.zip",‘rb‘).read())encode_data = encode_multipart_formdata(data)data = encode_data[0]header[‘Content-Type‘] = encode_data[1]try:    result = requests.request(method=‘POST‘,url=url,headers=header,data=data,timeout=(3,100))    if "true" in result.text:        analyse_Json = result.Json()        print("向服务器发送文件并解压成功")        result_path = analyse_Json["data"]        print("服务器端的地址为 {}".format(result_path))    else:        print("向服务器发送文件并解压Failed {}".format(result.text))except Exception as e:    print("执行发送数据失败.{}".format(e))#--------------------------------------------url = "http://localhost:5002/df"data = {            "filename": "xx.jar"        }result = requests.request(method="GET",Json=data,stream=True)f = open(data[‘filename‘],"wb")for chunk in result.iter_content(chunk_size=512):    if chunk:        f.write(chunk)#---------------------------------------------

 

使用curl命令进行发送文件的方式：

 

curl ${URL} -X POST -F "[email protected]${app_path}/${APP_name}.zip"  -F "ip1=${IP}" -F "ip2=${get_ip}" -F "port=${port}" -F "num=${num}"

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