我想将 Dropzone.js 与 Flask 一起使用。上传文件后，我想保存文件并在另一个页面中显示上传的文件名(重定向后)。但在浏览器中我收到的文件名等于“sample_value”。如何解决这个问题？
Python
import os
from flask import Flask, render_template, request,redirect, url_for
app = Flask(__name__)
app.config['UPLOADED_PATH'] = os.getcwd() + '/upload'
@app.route('/')
def index():
# render upload page
return render_template('index.html')
@app.route('/upload', methods=['GET', 'POST'])
def upload():
n='sample_value'
if request.method == 'POST':
for f in request.files.getlist('file'):
n=f.filename
f.save(os.path.join(app.config['UPLOADED_PATH'], f.filename))
print(f.filename)
# There i get real file name
n=f.filename
return redirect(url_for('found', file_name=n), code=307)
@app.route('/found',methods=['GET', 'POST'])
def found():
#There my file name is "sample_value"
print('File name after redirect ', request.args.get('file_name'))
return request.args.get('file_name')
if __name__ == '__main__':
app.run(host='0.0.0.0', port =5000, debug=True, threaded=True)
模板
<html>
<body>
<script src="{{ url_for('static', filename='js/dropzone.js') }}"></script>
<script src="{{ url_for('static', filename='js/jquery.js') }}"></script>
<form action="{{ url_for('upload') }}" class="dropzone" id="my-dropzone" method="POST" enctype="multipart/form-data">
</form>
<script>
Dropzone.autoDiscover = false;
$(function() {
var myDropzone = new Dropzone("#my-dropzone");
myDropzone.on("queuecomplete", function(file) {
// Called when all files in the queue finish uploading.
window.location = "{{ url_for('upload') }}";
});
})
</script>
</body>
</html>
我如何理解在处理请求之前执行重定向？
最佳答案
假设您没有在 Dropzone 中指定方法，那么它默认使用 GET 方法。检查Dropzone documentation并将方法指定为POST。
n="sample_value"
if request.method == 'POST': # This is always false.
...
>>> print(n) # n has never been replaced
sample_value
关于python - flask 重定向后我有无效数据，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55813809/