大家好，感谢您花时间阅读并可能帮助我。
我正在运行烧瓶，我的索引页面工作正常，但现在我正在尝试为我的网站设置一些额外的页面，我得到一个404错误，即使我相当确定我已经正确设置了它们python应用程序文件。
以下是错误日志：
2017-12-23 16:32:43,232: werkzeug.routing.BuildError: Could not build url for endpoint 'laws'. Did you mean 'search' instead?
2017-12-23 16:32:43,232: File "/home/*****/.virtualenvs/zones4drones/lib/python3.6/site-packages/flask/app.py", line 1997, in call
我想知道它是否与DNS有关？或者也许是服务器主机？因为我在测试环境（CS50 IDE）中运行它并且链接确实有效。
这是烧瓶应用程序：
import sqlite3
import os
from datetime import datetime
from flask import Flask, flash, redirect, render_template, request, session, url_for, jsonify
from flask_session import Session
from passlib.apps import custom_app_context as pwd_context
from tempfile impor t gettempdir
from flask_jsglue import JSGlue
import time
# configure application
app = Flask(__name__)
#JSGlue(app)
# configure session to use filesystem (instead of signed cookies)
app.config["SESSION_FILE_DIR"] = gettempdir()
app.config["SESSION_PERMANENT"] = False
app.config["SESSION_TYPE"] = "filesystem"
app.config["DEBUG"] = True
# ensure responses aren't cached
if app.config["DEBUG"]:
@app.after_request
def after_request(response):
response.headers["Cache-Control"] = "no-cache, no-store, must-revalidate"
response.headers["Expires"] = 0
response.headers["Pragma"] = "no-cache"
response.headers['Cache-Control'] = 'public, max-age=0'
return response
Session(app)
itemCount = 0
vehicleCount = 0
@app.route("/")
def index():
return render_template("index.html")
@app.route('/laws', methods=['GET'])
def laws():
return render_template("laws.html")
@app.route('/about', methods=['GET'])
def about():
return render_template("about.html")
@app.route("/search")
def search():
"""Search for items that match query."""
conn = sqlite3.connect('/home/extinkt/zones4drones/airports2.db')
db = conn.cursor()
a = float(request.args.get("swLat"))
b = float(request.args.get("swLong"))
c = float(request.args.get("neLat"))
d = float(request.args.get("neLong"))
if (a < 0): a += .1
else: a -= .1
if (b < 0): b -= .1
else: b += .1
if (c < 0): c -= .1
else: c += .1
if (d < 0): d += .1
else: d -= .1
#print(a + ", " + b + ", " + c + ", " + d)
db.execute("""SELECT latitude, longitude, name, class FROM airports WHERE
(CASE WHEN {0} < {2}
THEN latitude BETWEEN {0} AND {2}
ELSE latitude BETWEEN {2} AND {0}
END)
AND
(CASE WHEN {1} < {3}
THEN longitude BETWEEN {1} AND {3}
ELSE longitude BETWEEN {3} AND {1}
END)
AND (type != 'heliport' AND type != 'balloonport' AND type != 'closed')""".format(a, b, c, d))
airports = db.fetchall()
db.close()
conn.close()
return jsonify(airports)
因为有人要求我在这里包含index.html（以及包装index.html的layout.html）：
{% block main %}
<div id="container">
<div id="main">
<div id="left-bar">
<div id="flightCheckBox">
<div id="listTitle">
<img id="listTitleImg" src="{{ url_for('static', filename='img/listTitle.png') }}"/>
</div>
<div id="checklist">
<div id="listItem">
<div class="check">All wiring connections are intact</div>
<div class="check">Battery charged and securely strapped, no loose wires</div>
<div class="check">Well clear of all obstructions (Trees, Phone Lines, Radio Interference)</div>
<div class="check">No people/animals in flight path (Have a spotter if unsure)</div>
<div class="check">Not impeeding any emergency operations (Fires, Accidents, Rescues)</div>
<div class="check">Weather conditions suitable for flight (Rain, Wind, Fog) </div>
<div class="check">Location check complete (not within 5 miles of an Airport)</div>
</div>
<div id="checkboxes">
<div id="firstCheckbox" class="checkbox"><img src="{{ url_for('static', filename='img/unchecked.png') }}"/></div>
<div class="checkbox"><img src="{{ url_for('static', filename='img/unchecked.png') }}"/></div>
<div class="checkbox"><img src="{{ url_for('static', filename='img/unchecked.png') }}"/></div>
<div class="checkbox"><img src="{{ url_for('static', filename='img/unchecked.png') }}"/></div>
<div class="checkbox"><img src="{{ url_for('static', filename='img/unchecked.png') }}"/></div>
<div class="checkbox"><img src="{{ url_for('static', filename='img/unchecked.png') }}"/></div>
<div id="locationCheck" class="checkbox"><img id="locationCheckImg" src="{{ url_for('static', filename='img/unchecked.png') }}"/></div>
</div>
</div>
<div id="resultImg">
<img id="resultCheckImg" src="{{ url_for('static', filename='img/flightCheckIncomplete2.png') }}"/>
</div>
</div>
<div id="videoFull">
<div id="titleDiv"><img id="videoTitle" src="{{ url_for('static', filename='img/videoTitle.png') }}"/></div>
<div id="videoWrapper">
<video id="videoFrame" controls="controls" autoplay="true" name="Steetly Session"
src="{{ url_for('static', filename='video/steetley-edit.mov') }}"></video>
<!-- <iframe id="videoFrame" src="https://www.youtube.com/embed/TnXZEcU7PBw?autoplay=1&modestbranding=1&controls=0" allowfullscreen></iframe> -->
</div>
</div>
<div id="infoBox">
<p class="info2"style="padding-top: 10px">Want to see your video up there?</p>
<p class="info2">Click <a href=''>HERE</a> to submit your video</p>
<p class="info2">for a chance to be displayed!</p>
<p class="info2" style="padding-top: 18px">Did we miss a zone or screw something up?</p>
<p class="info2">It happens. Let us know, <a href=''>HERE</a>!</p>
<!--
<p class="info2" style="padding-top: 18px">If you like what we're doing here,</p>
<p class="info2">consider buying us a coffee or two.</p>
<div id="ko-fi" align="center"><script type='text/javascript' src='https://ko-fi.com/widgets/widget_2.js'></script><script type='text/javascript'>kofiwidget2.init('Buy Us a Coffee', '#45829E', 'S6S45ZA5');kofiwidget2.draw();</script></div>
-->
</div>
</div>
<div id="right-bar">
<!-- Map -->
<div id="map">
<!-- https://developers.google.com/maps/documentation/javascript/tutorial -->
<div id="map-canvas"></div>
<!-- http://getbootstrap.com/css/#forms -->
<form id="form">
<div class="form-group">
<label class="sr-only" for="q" style="color: #26c9dc">Search Locations</label>
<input class="form-control" id="q" placeholder="Search Locations" autocomplete="off" type="text"/>
<div id="geoLocate">
<button id="geoButton"><img src="{{ url_for('static', filename='img/geoLocate.png') }}" height="20px" /></button>
</div>
</form>
</div>
<div id="legend">
<table style="width:100%">
<tr>
<th class="head"><img class="circle" src="{{ url_for('static', filename='img/circle_blue.png') }}"/></th>
<td><p class="zoneInfo">Commercial Airports</p></td>
<td class="head"><img class="circle" src="{{ url_for('static', filename='img/circle_red.png') }}"/></td>
<td><p class="zoneInfo">Military Airports</p></td>
</tr>
<tr>
<th class="head"><img class="circle" src="{{ url_for('static', filename='img/circle_yellow.png') }}"/></th>
<td><p class="zoneInfo">National Parks</p></td>
<td class="head"><img class="circle" src="{{ url_for('static', filename='img/circle_green.png') }}"/></td>
<td><p class="zoneInfo">Civilian Marked Zones</p></td>
</tr>
</table>
</div>
</div>
</div>
</div>
{% endblock %}
这是包装每个页面的layout.html：
<!DOCTYPE html>
<html lang="en">
<head>
<link rel="shortcut icon" href="{{ url_for('static', filename='img/favicon.ico') }}">
<!-- http://jquery.com/ -->
<script src="https://code.jquery.com/jquery-latest.min.js"></script>
{% block script %}{% endblock %}
{% block css %}{% endblock %}
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<title>{% block title %}{% endblock %}</title>
</FRAMESET>
</head>
<body>
<div class="container">
<div id="header">
<div id="header-content">
<div id="logo" align="left">
<img id="logoImg" src="{{ url_for('static', filename='img/logo3.png') }}"/>
</div>
<div id="menu">
<a href="{{ url_for('index') }}">
<img class="option" src="{{ url_for('static', filename='img/checklist.png') }}"/>
</a>
<a href="{{ url_for('laws') }}">
<img class="option" src="{{ url_for('static', filename='img/laws.png') }}"/>
</a>
<a href="{{ url_for('about') }}">
<img class="option" src="{{ url_for('static', filename='img/about.png') }}"/>
</a>
</div>
</div>
<div id="seperator-bar"></div>
</div>
<main>
{% block main %}{% endblock %}
</main>
</div>
</body>
</html>
这里是laws.html（它还没有任何内容，我只是想加载它），以防有用：
{% extends "layout.html" %}
{% block css %}
<link href="{{ url_for('static', filename='index.css') }}" rel="stylesheet"/>
{% endblock %}
{% block script %}
<!-- app's own JavaScript -->
<script src="{{ url_for('static', filename='scripts.js') }}"></script>
{% endblock %}
{% block title %}
Zones 4 Drones
{% endblock %}
{% block main %}
<div id="container">
<div id="main">
<h1>Hello</h1>
</div>
</div>
{% endblock %}
这里是服务器模板目录中ls的输出：
14:26 ~/zones4drones/templates $ ls
about.html index.html laws.html layout.html
所有这4个文件都有权限：
-rw-rw-r--
如果看到该网站可能有所帮助，它位于zonesfordrones.com。我尝试使用的链接位于顶部栏。
我知道已经有很多关于这个主题的主题，但我向你保证我已经全部（或至少绝大多数）阅读了它们。他们中的大多数只是一个索引文件没有额外的链接，其余的说它是一个权限问题。所以，如果有人有任何想法，我将非常感激。
答案 0 :(得分：2)
事实证明，使用主机PythonAnywhere，您必须单击＆＃34;重新加载网站＆＃34;他们页面上的按钮，用于传播Flask python文件中的更改。我不知道是这种情况，因为自从我开始将它们作为主机使用以来，我没有对应用程序文件进行任何更改。由于HTML，CSS和Javascript的更改在没有重新加载的情况下传播，我从未意识到这一事实。希望如果你遇到这个问题，你会在浪费3天之前看到这篇帖子，就像我做的那样......：P