我正在設定一個網頁應用程序，我需要在其中顯示一些圖像。我從 API 收到的圖像將 matplotlib 圖轉換為 png，然後使用 io 庫將其發送到主 Web 應用程式。因此，我在頁面上顯示的圖像幾乎總是顯示為不正確或錯誤。但如果我透過上下文選單在新頁面中開啟它們，它們就可以了。
所以這段發送圖表的程式碼
@app.route('/send-data-a', methods=['GET'])
def send_data_user_dynamic():
...some code for diagram...
image_stream1 = io.BytesIO()
plt.savefig(image_stream1, format='png')
image_stream1.seek(0)
plt.close(fig)
return send_file(image_stream1, mimetype='image/png')
我嘗試將時間戳放在主應用程式中，因此連結將是唯一的，但是沒有幫助
@app.route('/data', methods=['GET'])
def data():
timestamp = int(time.time())
user_dynamic = requests.get(f'http://127.0.0.1:5000/send-data-a?timestamp={timestamp}')
user_amount = requests.get(f'http://127.0.0.1:5000/send-data-b?timestamp={timestamp}')
kp_month = requests.get(f'http://127.0.0.1:5000/send-data-c?timestamp={timestamp}')
kp_week = requests.get(f'http://127.0.0.1:5000/send-data-d?timestamp={timestamp}')
return render_template('second.html',
user_dynamic=user_dynamic.url,
user_amount=user_amount.url,
kp_month=kp_month.url,
kp_week=kp_week.url)
if __name__ == '__main__':
app.run(debug=True, port=5001)
並且有一個 html 模板可以輸出它們
<div class="diagram">
<img src="{{ user_dynamic }}" alt="user_dynamic">
<figcaption>some text</figcaption>
</div> 
import base64 user_dynamic_response = requests.get('http://127.0.0.1:5000/send-data-a') user_amount_response = requests.get('http://127.0.0.1:5000/send-data-b') kp_month_response = requests.get('http://127.0.0.1:5000/send-data-c') kp_week_response = requests.get('http://127.0.0.1:5000/send-data-d') user_dynamic_image_data = base64.b64encode(user_dynamic_response.content).decode('utf-8') user_amount_image_data = base64.b64encode(user_amount_response.content).decode('utf-8') kp_month_image_data = base64.b64encode(kp_month_response.content).decode('utf-8') kp_week_image_data = base64.b64encode(kp_week_response.content).decode('utf-8') return render_template('second.html', user_dynamic=user_dynamic_image_data, user_amount=user_amount_image_data, kp_month=kp_month_image_data, kp_week=kp_week_image_data)所以呃這段程式碼解決了問題