Flask Api中不允许出现方法405错误

2024-05-16 04:09:58 发布

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我目前正在尝试上传一张图片，稍后再处理它。但我得到一个405错误，我不知道如何修复它

@app.route('/upload')
def upload():
return render_template('upload.html')

@app.route('/uploader', methods = ['GET', 'POST'])
def upload_f():
if request.method == 'POST':
  f = request.files['file']
  f.save(f.filename)
  return 'file uploaded successfully'

html表单

   <html>
   <body>
   <form action = "http://localhost:5000/uploader" method = "POST" 
     enctype = "multipart/form-data">
     <input type = "file" name = "file" />
     <input type = "submit"/>
  </form>   
  </body>
  </html>

Tags： formappinputreturnrequestdefhtmltype
1条回答
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1楼 · 发布于 2024-05-16 04:09:58

来自Miguel Grinberg的Handling File Uploads With Flask教程：

import imghdr
import os
from flask import Flask, render_template, request, redirect, url_for, abort, \
    send_from_directory
from werkzeug.utils import secure_filename


app = Flask(__name__)
app.config['MAX_CONTENT_LENGTH'] = 1024 * 1024
app.config['UPLOAD_EXTENSIONS'] = ['.jpg', '.png', '.gif']
app.config['UPLOAD_PATH'] = 'uploads'

def validate_image(stream):
    header = stream.read(512)  # 512 bytes should be enough for a header check
    stream.seek(0)  # reset stream pointer
    format = imghdr.what(None, header)
    if not format:
        return None
    return '.' + (format if format != 'jpeg' else 'jpg')

@app.route('/')
def index():
    files = os.listdir(app.config['UPLOAD_PATH'])
    return render_template('index.html', files=files)

@app.route('/', methods=['POST'])
def upload_files():
    uploaded_file = request.files['file']
    filename = secure_filename(uploaded_file.filename)
    if filename != '':
        file_ext = os.path.splitext(filename)[1]
        if file_ext not in app.config['UPLOAD_EXTENSIONS'] or \
                file_ext != validate_image(uploaded_file.stream):
            abort(400)
        uploaded_file.save(os.path.join(app.config['UPLOAD_PATH'], filename))
    return redirect(url_for('index'))

@app.route('/uploads/<filename>')
def upload(filename):
    return send_from_directory(app.config['UPLOAD_PATH'], filename)

<html>
  <head>
    <title>File Upload</title>
  </head>
  <body>
    <h1>File Upload</h1>
    <form method="POST" action="" enctype="multipart/form-data">
      <p><input type="file" name="file"></p>
      <p><input type="submit" value="Submit"></p>
    </form>
    <hr>
    {% for file in files %}
      <img src="{{ url_for('upload', filename=file) }}" style="width: 64px">
    {% endfor %}
  </body>
</html>

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