python - 用 flask 记录错误

Question

我正在尝试使用 app.logger.error('') 在装饰器函数中记录错误，但它不起作用。另外我不能很好地调试它，我只能看到来自 http 客户端的响应:

(我用的是nginx+uwsgi+flask)

HTTP/1.1 502 Bad Gateway

Server: nginx

Date: Sun, 12 Aug 2012 15:45:09 GMT

Content-Type: text/html

Content-Length: 14

Connection: keep-alive

一切都很好，没有一行:app.logger.error('panic !!!')

def mydecorator():
    def decorator(f):
        def wrapped_function(*args, **kwargs):
            try:
                ip = Mytable.query.filter_by(ip=request.remote_addr).first()
            except:
                app.logger.error('panic !!!')
            else:
                dootherthing()

            resp = make_response(f(*args, **kwargs))
            h = resp.headers
            h['add-this-header'] = ":)"
            return resp
        return update_wrapper(wrapped_function, f)
    return decorator

好像是断章取意什么的

Answer 1

事实上，装饰器无法检测出上下文之外的应用程序实例，我使用 current_app 解决了这个问题:

第一。导入方法:from flask import current_app

第二。将任何应用类附加到 current_app:current_app.logger.error('panic !!!')

info @ http://flask.pocoo.org/docs/api/#flask.current_app

"Points to the application handling the request. This is useful for extensions that want to support multiple applications running side by side. This is powered by the application context and not by the request context, so you can change the value of this proxy by using the app_context() method."