我正在使用flask,並嘗試使用快速入門教程做一些非常簡單的事情,只需在我的機器(本地服務器)上運行即可。我製作了一個簡單的上傳表單,可以成功上傳圖像文件。然後,我想將此圖像作爲變量傳遞給template.html
以在頁面內顯示。 template.html
文件顯示正常,但圖像始終爲broken link image symbol
。我嘗試了很多不同的途徑,但我有一種感覺,我正在做的事情有點不對。如何將上傳的圖片傳遞給Flask中的template.html
import os
from flask import Flask, request, redirect, url_for, send_from_directory,
render_template
UPLOAD_FOLDER = '/home/me/Desktop/projects/flask/uploads'
ALLOWED_EXTENSIONS = set(['txt', 'pdf', 'png', 'jpg', 'jpeg', 'gif'])
app = Flask(__name__)
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
def allowed_file(filename):
return '.' in filename and \
filename.rsplit('.', 1)[1] in ALLOWED_EXTENSIONS
@app.route('/', methods=['GET', 'POST'])
def upload_file():
if request.method == 'POST':
file = request.files['file']
if file and allowed_file(file.filename):
filename = secure_filename(file.filename)
file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
return redirect(url_for('uploaded_file', filename=filename))
return '''
<!doctype html>
<title>Upload new File</title>
<h1>Upload new File</h1>
<form action="" method=post enctype=multipart/form-data>
<p><input type=file name=file>
<input type=submit value=Upload>
</form>
'''
@app.route('/uploads/<filename>')
def uploaded_file(filename):
filename = 'http://127.0.0.1:5000/uploads/' + filename
return render_template('template.html', filename = filename)
if __name__ == '__main__':
app.run()
這是template.html
:
<!doctype html>
<title>Hello from Flask</title>
{% if filename %}
<h1>some text<img src="{{filename}}"> more text!</h1>
{% else %}
<h1>no image for whatever reason</h1>
{% endif %}
我如何通過上傳圖像文件template.html
,以便正常顯示?
感謝
也許這是一個愚蠢的問題,而是何時會由send_file每次都能得到調用此加成? – Uzebeckatrente
@Uzebeckatrente,模板中的''標記指向'/ uploads/',它被路由到send_file。 –
Miikka
嗨@Miikka我在雲服務器上嘗試這個。同樣的邏輯對我不起作用。它顯示src標記內的完整圖像路徑。你可以請任何建議嗎? –