TemplateNotFound 即使我可以打印出目录

Question

我正在将 swaggerUI 添加到 Flask API。我有我的应用程序，在应用程序内部我创建了一个模板所在的 swagger 目录。当在 __init__ 文件中初始化 flask 应用程序时，我设置了 template_folder。这似乎有效，因为它在函数内打印出正确的目录。我什至做了一个 ls 并且 swaggerui.html 文件在那里，但我仍然收到错误消息，提示找不到模板。另外，如果我在 templates_folder 中添加一个随机文件 testin123.txt，当我刷新站点时，会打印出 testing123.txt。我错过了什么？

from flask import Flask, request, jsonify, render_template, Blueprint
from flask import current_app as current_app
import os

docs = Blueprint('docs', __name__)

@docs.route('/docs')
def get_docs():
    #this prints out the correct path
    print(f"template dir is {current_app.template_folder}")
    
    #this prints "swaggerui.html"
    for filename in os.listdir(current_app.template_folder):
        print(filename)

    print("After ls")
    
    #even though everything check-out still cant find file
    return render_template('swaggerui.html')

template dir is flask_project/swagger/templates/

swaggerui.html

test123.txt

After ls

Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/flask/app.py", line 2073, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python3.9/site-packages/flask/app.py", line 1518, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/usr/local/lib/python3.9/site-packages/flask/app.py", line 1516, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/local/lib/python3.9/site-packages/flask/app.py", line 1502, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
  File "/app/./flask_project/docs.py", line 28, in get_docs
    return render_template('swaggerui.html')
  File "/usr/local/lib/python3.9/site-packages/flask/templating.py", line 148, in render_template
    ctx.app.jinja_env.get_or_select_template(template_name_or_list),
  File "/usr/local/lib/python3.9/site-packages/jinja2/environment.py", line 1068, in get_or_select_template
    return self.get_template(template_name_or_list, parent, globals)
  File "/usr/local/lib/python3.9/site-packages/jinja2/environment.py", line 997, in get_template
    return self._load_template(name, globals)
  File "/usr/local/lib/python3.9/site-packages/jinja2/environment.py", line 958, in _load_template
    template = self.loader.load(self, name, self.make_globals(globals))
  File "/usr/local/lib/python3.9/site-packages/jinja2/loaders.py", line 125, in load
    source, filename, uptodate = self.get_source(environment, name)
  File "/usr/local/lib/python3.9/site-packages/flask/templating.py", line 59, in get_source
    return self._get_source_fast(environment, template)
  File "/usr/local/lib/python3.9/site-packages/flask/templating.py", line 95, in _get_source_fast
    raise TemplateNotFound(template)
jinja2.exceptions.TemplateNotFound: swaggerui.html

.
├── __init__.py
├── docs.py
├── swagger
│   ├── static
│   │   ├── css
│   │   │   └── swagger-ui.css
│   │   ├── img
│   │   │   ├── favicon-16x16.png
│   │   │   └── favicon-32x32.png
│   │   ├── js
│   │   │   ├── swagger-ui-bundle.js
│   │   │   ├── swagger-ui-standalone-preset.js
│   │   │   └── swagger-ui.js
│   │   └── openapi.json
│   └── templates
│   └── swaggerui.html

Answer 1

在您的应用中设置 EXPLAIN_TEMPLATE_LOADING 选项并在此处传递输出。

myApp = Flask(__name__)
myApp.config["EXPLAIN_TEMPLATE_LOADING"] = True

也检查this

TemplateNotFound 即使我可以打印出目录

TemplateNotFound even though I can print out the directory

python

flask