Question

我使用flask框架创建了一个GPS数据处理应用程序。我已在本地虚拟环境中完全测试了应用程序并尝试在heroku中托管。

通过此平台，用户可以上传文件并通过电子邮件获取处理过的文件。

问题是当用户提交form时会出现以下错误

应用程序中发生错误，您的页面无法执行提供服务。如果您是应用程序所有者，请检查日志以获取详细信息。

为了处理数据，我使用了一个二进制文件，它接受命令行参数并根据用户参数处理数据。

我认为问题在于二进制文件

Dom Danks提出了一个同等的问题。但我不确定如何根据提供的答案按照步骤克服这个问题。

我只在web: gunicorn app:app添加procfile我是否需要添加其他内容？

@app.route('/', methods=['GET', 'POST'])
def SPP():
    SPP = My2Form()
    if request.method == 'POST':
        if SPP.validate_on_submit():

#Some codes to upload files to root folder

            submitted_file1 = request.files['sfileObsRover'] 
            submitted_file2 = request.files['sfileNavRover']
            a=submitted_file1.filename
            c=submitted_file2.filename
            selevation=str(SPP.sema.data)
            sFreq=SPP.sfrq.data
            emailAdd=SPP.semail.data
            filename1 = secure_filename(submitted_file1.filename)
            submitted_file1.save(os.path.join(app.config['UPLOAD_FOLDER'], filename1))
            filename2 = secure_filename(submitted_file2.filename)
            submitted_file2.save(os.path.join(app.config['UPLOAD_FOLDER'], filename2))

#End of the codes which related to file upload to root folder

#Generate a random file name for the out put
            y = str(randint(10000, 99999))+'.pos'

#Main processing function start ('rnx2rtkp' is a binary file which use to process data)

            command='rnx2rtkp -p 0 -m '+selevation+' -n -o '+y+' '+a+' '+c
            os.system(command)

#Use to delete files uploaded by user after processed file created

            os.remove(a)
            os.remove(c)

#Generated final processed file email to user

            email_user = ''
            email_password = ''
            recipientemail=emailAdd
            attachmentFile=y


            subject = 'subject'
            msg = MIMEMultipart()
            msg['From'] = email_user
            msg['To'] = recipientemail
            msg['Subject'] = subject

            body = 'This is your Post-Processed position file'
            msg.attach(MIMEText(body,'plain'))
            attachment  =open(attachmentFile,'rb')

            part = MIMEBase('application','octet-stream')
            part.set_payload((attachment).read())
            encoders.encode_base64(part)
            part.add_header('Content-Disposition',"attachment; filename= "+attachmentFile)

            msg.attach(part)
            text = msg.as_string()

            server = smtplib.SMTP('smtp.gmail.com',587)
            server.starttls()
            server.login(email_user,email_password)

            server.sendmail(email_user,recipientemail,text)
            server.quit()          

            return render_template('results.html', email=emailAdd, Name=SPP.sName.data, ema=selevation, frq=sFreq, pmode='Single Point Positioning')
    return render_template('SPP.php',SPP=SPP)

我还有rnx2rtkp应用程序的源代码

在Heroku上部署Flask Web应用程序

0 个答案: