Tags: des style class Blog Code javaThe registration module of the previous article, this is the login module. Mainly includes the login main interface, and login related written loginaction, Logindao and Loginservice. and the configured filter. The detailed procedures and code are documented in the following logical o
;namespace Mvcapplication1.controllers{ Public class Homecontroller:controller { Public ActionResult Index () { return View (); } [HttpPost] [Encryptlogin] Public ActionResult Login (stringstring password) { TODO: Save to database return null; } Public ActionResult SignOut () { FormsAuthentication.SignOut (); return Re
Before because I indulge in interstellar cannot extricate oneself cause blog long-term not update, can only say Wanwusangzhi ah.
This article follows the previous plan to explain how filters are used in jfinal, and how to use filters to verify the user's login status.
First of all explain why to do login verification, the above article in the user login as an exa
Myservletrequest (httpservletrequest) request), arg1);
}
public void init (Filterconfig arg0) throws Servletexception {
TODO auto-generated Method Stub
}
}
Oh, see the decorator design mode of the powerful bar! This part belongs to the advanced application of filter, and a day's course tomorrow will explain the advanced application of filter. I did not think so much, that the request and
1. servlet filter concept:
**************************************** **************************************** *******
The servlet filter is defined in java servlet specification 2.3. It can check and modify the request and response objects of the servlet container.
The servlet filter does not generate request and response objects. It can only provide filtering. S
Http://blog.csdn.net/pengpenglin/ 1. servlet filter concept:**************************************** **************************************** *******The servlet filter is defined in java servlet specification 2.3. It can check and modify the request and response objects of the servlet container. The servlet filter does not generate request and response objects
login request, they do not need a session check (meaningless), Hitting the feature on the controller will work on all the actions underneath it, without hitting the feature for each action, saving the amount of code. We have registered a global filter and individually filter the Userlogincontroller controller, there is a priority problem action>controller> the g
Http://www.cnblogs.com/UliiAn/p/5402146.htmlIn the Web API, the idea of aspect-oriented programming (AOP) is introduced, in which specific filter can be inserted for process interception processing. The introduction of this mechanism can better practice the dry (Don ' t Repeat yourself) thought, through the filter can be unified to some common logic processing, s
have access control.Third, find App_start\webapiconfig.cs and add the filter instance under the Register method:public static void Register (Httpconfiguration config) { Config. Maphttpattributeroutes (); Register the global Filter CONFIG. Filters.add (New Authfilterattribute ()); Config. Routes.maphttproute ( name: "Defaultapi", routetemplate: "Api/{controller}/
(1) Loading Sequence of different elements in Web. xml
The order of loading is irrelevant to their order in the web. xml file. That is, the filter will not be loaded first because the filter is written before the listener.
Web. the XML loading sequence is: servletcontext-> c
We usually encounter a problem when surfing the internet, see a video and so on, want to open the watch, click after the pageRemind you: You are not logged in, do you want to sign in? Then Balabala ran to lose the account password.So this is the function of a filter, when you want to access a resource (usually understood as a link), the server willAnalysis, whether the current visitor meets certain criteria (usually to detect if a member is already lo
Note: The filter mainly filters the value inside the request,response.
*web.xml----
* Login Action Add cookie-------
*filter Filter Gets cookies------
(without a new username, password, read the cookie directly through the query database, get user user,
Request.getsession (). setattribute ("user", User1))
* Other act
Java web-Filter coarse-grained permission Control
1 Description
We provide three pages: index. jsp, user. jsp, and admin. jsp.
Index. jsp: no one can access the system. user. jsp: only the logged-on user can access the system. admin. jsp: only the administrator can access the system.
2 Analysis
Design User class: username, password, and grade. grade indicates the User level, 1 indicates the common User, a
parameters as data sources of this type.
Query string: Question mark (?) in the URL (?) Partial Parameters
Server variable: this refers to the server request. variable value in servervariables. sharePoint also makes some extensions to these server-side variables. For example, the logon_user variable is used to record the current Login User's
Parameters and filtering
Dataview supports two filtering methods:
Query the list through cam
Generally, Java Web projects use filters to determine whether a session is invalid. The following example shows how to implement a filter to verify whether a user's session is lost.
Configuration in Web. xml:
Filter class:
Package COM. zyujie. common; import Java. io. ioexception; import Java. io. printwriter; impo
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