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Internal Server Error
The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application.
这是app.py的代码，这个运行用的端口号是5500
from flask import Flask, render_template
from livereload import Server
app = Flask(__name__)
@app.route("/")
def index():
return render_template("index.html", title="<h2>welcome to flask</h2>", body="<h4>hello flask</h4>")
@app.template_filter("md")
def markdown_to_html(txt):
from markdown import markdown
return markdown(txt)
def read_md(filename):
with open(filename) as md_file:
content = reduce(lambda x, y: x+y, md_file.readlines())
return content.decode("utf-8")
@app.context_processor
def inject_method():
return dict(read_md=read_md)
if __name__ == "__main__":
live_server = Server(app.wsgi_app)
live_server.watch("**/*.*")
live_server.serve(open_url=True)
设置app.py debug的提示
下面这个是flaskblog.py的代码，运行端口号是5000，
from flask import Flask, render_template, request, redirect, url_for, make_response
from werkzeug.routing import BaseConverter
from werkzeug.utils import secure_filename
from flask.ext.script import Manager
from os import path
class RegexConverter(BaseConverter):
def __init__(self, url_map, *items):
super(RegexConverter, self).__init__(url_map)
self.regex = items[0]
app = Flask(__name__)
app.url_map.converters["regex"] = RegexConverter
manager = Manager(app)
@app.route('/')
def hello_world():
response = make_response(render_template("index.html", content="welcome to flask web development"))
response.set_cookie("username","")
return response
@app.route('/service')
def service():
return 'service'
@app.route('/about')
def about():
return 'about'
@app.route("/user/<regex('[a-z]{3}'):user_id>")
def user(user_id):
return "user is %s" % user_id
@app.route("/login",methods=['GET','POST'])
def login():
if request.method == "post":
username = request.form["username"]
password = request.form["password"]
else:
username = request.args["username"]
return render_template("login.html", method=request.method)
@app.route("/upload",methods=["GET","POST"])
def upload():
if request.method == "post":
f = request.files("file")
basepath = path.abspath(path.dirname(__file__))
upload_path = path.join(basepath, "static/upload")
f.save(upload_path, secure_filename(f.filename))
return redirect(url_for("upload"))
return render_template("upload.html")
@app.errorhandler(404)
def page_note_found(error):
return render_template("404.html")
@manager.command
def dev():
from livereload import Server
live_server = Server(app.wsgi_app)
live_server.watch("*", "*.*")
live_server.serve(open_url=True)
if __name__ == '__main__':
manager.run()
#app.run()
debug提示如下：
python
你在 flask app 启动的地方把启动模式改成 debug 试试。
app.run(debug=True)可以打印出出错原因。