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, Knowing that the next time a request message is to be added with this cookie, the server will find the corresponding session (handled by Tomcat itself) on this session_id when it is sent, and if cookies are disabled, Then generally take the form of a URL or use input hidden to pass in the session_idEach time a client sends a cookie, it searches locally for a cookie that is larger than the requested resource, and then adds it to the cookie in the request, which must be noted that response actua

= ='Q': theNUM1 = input ('Please enter the first value:') -oper = str (raw_input ('Please enter a arithmetic character:')) innum2 = input ('Please enter a second value:') the #operation (NUM1,NUM2) theof =operationfactory () AboutOper_obj =Of.choose_oper (Oper) theOPER_OBJ.NUM1 =NUM1 theOper_obj.num2 =num2 the Print 'The result of the operation is:', Oper_obj. GetResult ()The structure of these classes is shown below:Specifically defines a operation class as the parent class, th

+ classCashreturn (cashsuper): - the def __init__(self,money_condition=0,money_return=0): *Self.money_condition =money_condition $Self.money_return =Money_returnPanax Notoginseng - defAccept_cash (Self,money): the ifmoney>=self.money_condition: + returnMoney-(money/self.money_condition) *Self.money_return A return Money the + #Specific policy Classes - classContext (object): $ $ def __init__(self,csuper): -Self.csuper =Csuper - the defGetResult (

candidate recipients, greatly reducing the coupling degree, The structure that handles a request can be added or modified at any timeBe careful, however, that a request is reached at the end of the chain of responsibility and is not properly configured to be processed.AndySource: http://www.cnblogs.com/onepiece-andy/The copyright of this article is owned by the author and the blog Park, welcome reprint, but without the author's consent must be in the article page obvious location to the origina