python - 烧瓶错误:连接到 Web 服务时出现 werkzeug.routing.BuildError
问题描述
出于教育目的,我们正在构建一个非常简单的 Flask 应用程序。虽然它在本地运行顺利,但当我将代码复制到我的虚拟专用服务器时它不再运行。
路由定义如下:
from flask import Flask, request, render_template
app = Flask(__name__)
@app.route("/", methods=["GET", "POST"])
def sign_up():
...
这是使用自动完成的功能:
with connection.cursor() as cursor:
sql = f"SELECT * FROM movies WHERE title"
query = cursor.execute(sql)
data = cursor.fetchall()
# from flask import jsonify
results = [data[i]['title'] for i in range(len(data))]
return render_template("autocomplete.html", results=results)
autocomplete.html
位于模板文件夹中,该文件夹位于 Python 程序文件旁边。
Web 服务是这样启动的:
if __name__ == '__main__':
app.run(host='0.0.0.0')
我可以成功启动 web 服务,但是当我使用 URL 连接时,它返回一个 500 错误,并且服务器控制台显示:
[2020-05-28 16:19:47,099] ERROR in app: Exception on / [GET]
Traceback (most recent call last):
File "/root/miniconda3/lib/python3.7/site-packages/flask/app.py", line 2447, in wsgi_app
response = self.full_dispatch_request()
File "/root/miniconda3/lib/python3.7/site-packages/flask/app.py", line 1952, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/root/miniconda3/lib/python3.7/site-packages/flask/app.py", line 1821, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/root/miniconda3/lib/python3.7/site-packages/flask/_compat.py", line 39, in reraise
raise value
File "/root/miniconda3/lib/python3.7/site-packages/flask/app.py", line 1950, in full_dispatch_request
rv = self.dispatch_request()
File "/root/miniconda3/lib/python3.7/site-packages/flask/app.py", line 1936, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "app.py", line 94, in sign_up
return render_template("autocomplete.html", results=results)
File "/root/miniconda3/lib/python3.7/site-packages/flask/templating.py", line 140, in render_template
ctx.app,
File "/root/miniconda3/lib/python3.7/site-packages/flask/templating.py", line 120, in _render
rv = template.render(context)
File "/root/miniconda3/lib/python3.7/site-packages/jinja2/environment.py", line 1090, in render
self.environment.handle_exception()
File "/root/miniconda3/lib/python3.7/site-packages/jinja2/environment.py", line 832, in handle_exception
reraise(*rewrite_traceback_stack(source=source))
File "/root/miniconda3/lib/python3.7/site-packages/jinja2/_compat.py", line 28, in reraise
raise value.with_traceback(tb)
File "/root/recommender/app-flask/templates/autocomplete.html", line 10, in top-level template code
$.getJSON("{{url_for('autocomplete')}}",{
File "/root/miniconda3/lib/python3.7/site-packages/flask/helpers.py", line 370, in url_for
return appctx.app.handle_url_build_error(error, endpoint, values)
File "/root/miniconda3/lib/python3.7/site-packages/flask/app.py", line 2216, in handle_url_build_error
reraise(exc_type, exc_value, tb)
File "/root/miniconda3/lib/python3.7/site-packages/flask/_compat.py", line 39, in reraise
raise value
File "/root/miniconda3/lib/python3.7/site-packages/flask/helpers.py", line 358, in url_for
endpoint, values, method=method, force_external=external
File "/root/miniconda3/lib/python3.7/site-packages/werkzeug/routing.py", line 2179, in build
raise BuildError(endpoint, values, method, self)
werkzeug.routing.BuildError: Could not build url for endpoint 'autocomplete'. Did you mean 'static' instead?
我认为这是因为 URL 发生了变化,但我不知道如何解决这个问题。
任何人都可以帮忙吗?
解决方案
推荐阅读
- reporting-services - 设置图例 SSRS 的表达式
- android - 在选择 SQL Lite 中添加交替计数
- asp.net - 如何在 Asp.net 中使用令牌身份验证调用 Web 服务?
- php - 显示所有预订房间的客户
- angular - Angular 5过滤多列
- python - 没有名为 pandas 的模块
- javascript - Linked JavaScript does not change the html body font
- android - java.lang.IllegalArgumentException:由于 Redmi 设备上的 android.support.v4.widget.DrawerLayout.openDrawer
- python - Pandas: replace column A with column B if B is not missing
- python - 了解装饰器中 kwargs args 的这种特定用途