Springmvc Study Notes (20)-interceptorSpringmvc Study Notes (20)-interceptor
This article mainly introduces the interceptor in springmvc, including the definition and configuration of the interceptor, then demonstrates a test example of chained interception, and finally demonstrates the application of the interceptor
Interceptors (Interceptor) are one of the most powerful features of Struts2, and can be said to be the core of struts2, which allows you to do some processing before or after action and result are executed. At the same time, interceptors allow you to modularize generic Code and act as a reusable class. Many of the features in Struts2 are done by interceptors. Interception is an implementation strategy of AOP. The Chinese document in WebWork is interpr
What is an interceptor:Interceptors, which are used in AOP (aspect-orientedprogramming) to intercept a method or field before it is accessed, and then add some action before or after it. Interception is an implementation strategy of AOP.The Chinese document in WebWork is interpreted as--interceptors are objects that dynamically intercept action calls. It provides a mechanism to enable developers to define code that executes before and after an action executes, or to prevent it from executing bef
Reprint Link: http://elim.iteye.com/blog/1750680The Interceptor interceptor in SPRINGMVC is also very important and useful, and its main function is to intercept the user's request and handle it accordingly. For example, through it to verify the permissions, or to determine whether the user is logged on, or if the current time is like 12306 to determine whether the purchase time.first, define the
Interceptors almost spread out in every program, so the specific interceptor configuration process, I hope to help everyone.STRUTS2 Interceptor Specific configuration processSpecifies the number of parameters that the system initializes to the interceptor. Zhang added to your own set of interceptor stacks .Change th
The Interceptor interceptor in SPRINGMVC is also very important and useful, and its main function is to intercept the user's request and handle it accordingly. For example, through it to verify the permissions, or to determine whether the user is logged on, or if the current time is like 12306 to determine whether the purchase time.First, define the interceptor i
The Interceptor interceptor in SPRINGMVC is also very important and useful, and its main function is to intercept the user's request and handle it accordingly. For example, through it to verify the permissions, or to determine whether the user is logged on, or if the current time is like 12306 to determine whether the purchase time.First, define the interceptor i
Detailed description and sample code of interceptor in SpringMVC, springmvc example
This article focuses on SpringMVC interceptor introduction, instance code, configuration, and other content, as follows.
Springmvc's processor interceptor is similar to the Filter in Servlet development and is used for preprocessing and post-processing of the processor. This artic
Pee InterceptorIt can be said that the "interceptor" is the key content of Struts2. See the name of the meaning, the role of interceptors is mainly to intercept things, intercept what? Of course ' action ', the interceptor works before executing ' action ', executes some pre-processed code, then executes the associated method in the action, and then the process goes back inside the
Nineth Chapter Interceptor
The interceptor works as shown above, and each action request is wrapped inside a series of interceptors. The interceptor can do similar operations in the action execution line, or it can be recycled after the action is executed straight.
Each action can either transfer the action to the following
I. Introduction of InterceptorsThe interceptor in the SPRINGMVC, in simple terms, isInterception of user requests, we can do it after the interception request.preprocessing and post-processing, you can do the logging, permission control, request calculation and other operations. And the filter in the Servlet API is a bit similar.Second, the use of interceptors1. Writing interceptorsWe have to write the interceptor
1. Interceptor: The struts2 interceptor intercepts a field before or after accessing an action or action. The struts2 interceptor is pluggable and is an implementation of AOP.Explanation of webwork Chinese document: the interceptor is the object for dynamically intercepting action calls. It provides a mechanism for dev
The interceptor in struts2 is widely talked about and varied. Here are several common online sayings:
1. The principle of interceptor is dynamic proxy. (Nima)
2. The principle of interceptor is the responsibility chain model. (If there is no interceptor chain, it means it adopts the responsibility chain mode)
3.
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Difference and use of struts2 filter and interceptor, struts2 Filter
Java web Filter and interceptor
1.1 What is an interceptor:
Interceptor, used in AOP (Aspect-Oriented Programming) to intercept a method or field before it is accessed, and then add some operations before or after it. Interception is an implementation
I. Introduction of interceptors
Spring MVC's processor interceptors are similar to filter filters in servlet development for preprocessing and post-processing of processors. Common Application Scenarios
1, log records: Log the request information for information monitoring, information statistics, calculation of PV (Page View) and so on.2, permission check: such as login detection, enter the processor detection detection is logged in, if not directly back to the login page;3, performance monito
OkHttp built-in interceptorIn this blog OKHTTP3 Interceptor (Interceptor), we have introduced the role of interceptors, interceptors are OkHttp provides a powerful mechanism for the unified processing of HTTP requests and responses, it can achieve network monitoring, request and response rewriting, request failure enrichment and other functions.We also know that interceptors can be linked together, and we c
How to customize an interceptor.
It takes three steps to customize an interceptor:
1 Customize a class that implements the Interceptor interface (or inherits from Abstractinterceptor).
2 Register the Interceptor defined in the previous step in Strutx.xml.
3 Refer to the above defined
Detailed description of struts interceptor1. Interceptor: The Struts2 interceptor intercepts a field before or after accessing an Action or Action. The Struts2 interceptor is pluggable and is an implementation of AOP.Explanation of WebWork Chinese document: the interceptor is the object for dynamically intercepting Act
Source: http://www.blogjava.net/zzzlyr/archive/2009/10/12/297998.htmlStruts2 Interceptor Detailed configuration process1: The Super interface of all interceptors interceptor, action to implement this interface;Interceptor it has three methods (init (), Destroy (), Interceptor ()):Init () Method: Load once when the serv
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