Question

使用add_url_rule失败但@ app.route（＆＃39;＆＃39;）工作正常。

您好，我正在尝试将SSE（服务器发送事件）添加到Python Flask应用程序中。不幸的是，该应用使用var Feed = function (props) { return <div>{ props.username }</div> }来管理路线，因此在这种情况下使用装饰器并不适合我。

SOMEOBJECT.app.add_url_rule

确定from flask import Flask, Response import random import time app = Flask(__name__) def eventStream(): # will send simple SSE style responses while True: waittt = random.random() time.sleep(waittt) yield "data: {}\n\n".format(str(waittt)) # This route works fine :) @app.route("/streamroute") def stream(): return Response(eventStream(), mimetype="text/event-stream") # This route doesn't work :( app.add_url_rule("/stream", stream) app.run(debug=True)

KO curl http://localhost:5000/streamroute

Answer 1

from flask import Flask, Response                                              
import random                                                                  
import time                                                                    

app = Flask(__name__)                                                          
def eventStream():                                                             
    # will send simple SSE style responses                                     
    while True:                                                                
        waittt = random.random()                                               
        time.sleep(waittt)                                                     
        yield "data: {}\n\n".format(str(waittt))                               
# This route works fine :)                                                     
@app.route('/streamroute')                                                     
def stream():                                                                  
    return Response(eventStream(), mimetype="text/event-stream")               

# This route doesn't work :(                                                   
app.add_url_rule('/stream', 'stream', stream)                                   
app.run(debug=True)

请参阅下面的文档，正确的语法是：

app.add_url_rule('/stream', 'stream', stream)

更多信息：http://flask.pocoo.org/docs/0.10/api/#flask.Flask.add_url_rule

Python Flask：Route vs add_url_rule，SSE

1 个答案: