我正在设置一个网络应用程序，我需要在其中显示一些图像。我从 API 收到的图像将 matplotlib 图转换为 png，然后使用 io 库将其发送到主 Web 应用程序。因此，我在页面上显示的图像几乎总是显示为不正确或错误。但如果我通过上下文菜单在新页面中打开它们，它们就可以了。
所以这段发送图的代码
@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')
我尝试将时间戳放在主应用程序中，因此链接将是唯一的，但是没有帮助
@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)
并且有一个 html 模板可以输出它们
<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)所以呃这段代码解决了问题