Question

我刚开始使用刻录机，我正在尝试使用redis构建教程微博。这是我的应用程序：

from flask import Flask, render_template, request, url_for, redirect
import redis
from datetime import datetime

app = Flask(__name__)
app.config.from_object(__name__)

app.config.update(dict(
    DEBUG = True,
    ))

POOL = redis.ConnectionPool(host='localhost', port=6379, db=0)

@app.route("/")
def index():
    r = redis.StrictRedis(connection_pool = POOL)
    print r
    pipe = r.pipeline()
    print pipe
    last_ten = pipe.zrange('post:created_on', 0, 9)
    print last_ten
    posts = []
    for post in last_ten:
        posts.append(pipe.hgetall('{}{}'.format('post:', post)))


    print posts
    pipe.execute()

    return render_template('index.html', posts)



@app.route('/new', methods = ['POST'])
def addPost():
    r = redis.StrictRedis(connection_pool = POOL)

    title = request.form['title']
    author = request.form['author']
    now = datetime.now()

    pipe = r.pipeline()
    post_format = 'post:'
    pid = pipe.incr('post')
    pipe.hmset('{}{}'.format(post_format,pid), {'title':title, 'author':author})
    pipe.zadd('post:created_on', pid = now)
    pipe.execute()

    return redirect(url_for('index'))

if __name__ == "__main__":
    app.run()

当我运行python testapp.py时，我得到了

* Running on http://127.0.0.1:5000/
* Restarting with reloader

但是页面永远不会在http://127.0.0.1:5000/加载，也不会返回错误。它只是挂起，试图永远加载。我已经离开了一段时间，它一直在继续。我不确定会导致什么，但谢谢你的帮助。

更新：我在print视图中添加了几个index语句，以查看代码运行时发生的情况，这是打印到终端的内容。< / p>

* Running on http://127.0.0.1:5000/
* Restarting with reloader
StrictRedis<ConnectionPool<Connection<host=localhost,port=6379,db=0>>>
StrictPipeline<ConnectionPool<Connection<host=localhost,port=6379,db=0>>>
StrictPipeline<ConnectionPool<Connection<host=localhost,port=6379,db=0>>>

Answer 1

我相信我已经解决了这个问题。问题是我打开了pipeline并尝试在调用pipe.execute之前对从db中检索到的数据进行操作。我仍在努力让整体功能发挥作用，但这就是我解决这一特定问题的方法。

Flask应用程序不会在浏览器中加载

1 个答案: