java interceptor

In the previous article, I wrote about my own MVC framework, and then I talked about plugins and interceptors!In dealing with some common logic it is best to encapsulate a plugin or interceptor so that it can be used directly in the future. In my framework, you can implement plug-ins or interceptors by inheriting the following abstract classes.1. Aspectinterceptor Abstract classAn AOP interceptor that handl

The order in which the Servlet filter and Spring interceptor are executed is the filter in order? How do we control the order in which filter is executed? Through Tomcat code analysis, the servlet is called after filter execution is complete, and if multiple filter controls the order of execution, the first thing to do is to configure a parameter in the Web.xml, like order, but find out, the servlet does not have this parameter. Try the configuration

The previous blog introduced the concept of interceptors and some of the basics of Struts2 and custom interceptors, but how exactly is the interceptor applied in the actual project, perhaps you are still confused, then this blog we will come up with actual combat, but also a summary of the interceptor and application practice. When we are doing any information management system, we can not avoid to control

For example, we sometimes need to do audit: When to create a record and when to update it recently, the previous practice was to write the Java code in different places: Entity. setcreated (NewDate (););; Entity. setcreatedby (userid );; Session. Save (entity );; In this way, repeated code is everywhere, and it is quite uncomfortable. The so-called "once and only once" in OOP should not be like this. Let's take a look at how

1. JDK can generate a proxy for the instance that implements the interface. Therefore, first create an interface. // Interface personPackage cn.edu. HLD; Public interface person{Public void Info ();Public void run ();}2. To implement dynamic proxy later, an implementation class of the person interface is provided. // Class personimpl. JavaPackage cn.edu. HLD; Public class personimpl implements person{ Public void Info (){// Todo auto-generated method stubSystem. Out. println ("I am thtwin "); }P

principle: The session in the new page to save token random code, when the save validation, after the deletion, when the click on the save again due to the server side of the session no longer exists, all can not be verified through. Note that if you are clustered, you need to put tokens into the cache. Note Token code:java source Java code Copy Code collection code1[email protected] (Elementtype.method)2[email protected] (retentionpolicy.runtime)3. P

The struts-default.xml defines a series of interceptor and interceptor chains A default interceptor defastack stack is also defined. Once the default interceptor is defined, This interceptor will take effect for all the actions in the package. Of course, if your Action expli

To activate the dependency injection function (or any other function provided by the interceptor) in the action, you must configure the action. Like other elements, many interceptors have provided default configuration items. You only need to confirm that the package of the Action inherits the "struts-Default" package. Before configuring a new interceptor, you must first define it. ...Class = "..

Quick learning of AngularJs HTTP Response interceptor and quick learning of angularjs At any time, if we want to add global functions for the request, such as identity authentication and error handling, we can intercept the request before it is sent to the server or when the server returns it, is a good means of implementation. AngularJs provides a global approach for processing through the interceptor. Fou

Today's project encountered the need to parse the data received from the push into a structured data type problem required by the application layer, because of the wide variety of push message types, the number of structured data types that are waiting to be parsed, and some that require a few steps of the parse process, and because of the project's historical reasons, Use Protocal Buffer (the data for push is passed in bytes). In the middle of trying the agent, decoration and other modes, have

Struts2 custom interceptor DevelopmentIntroduction In the previous article has talked about the basic concepts of interceptor (http://blog.csdn.net/xlgen157387/article/details/45951163), below we implement a custom interceptor together.Interceptor Interface public interface Interceptor extends Serializable { /**

The main contents of this article are as followsWhat the interceptor can do.What can interceptors do?Logging: Logging For information monitoring, information statistics, calculation of PV (Page View) and so on.Permission check: such as login detection;Performance monitoring: Sometimes the system in a certain period of time inexplicably slow, through the interceptor before entering the processor to record th

In this series of Groovy Quest Mop Nine interceptor, we have detailed the various aspects of a simple interceptor class, allowing us to initially have the basis of interceptors. This article needs to further implement our AOP programming with interceptor classes, based on the previous interceptor class. First of all,

First, Interceptor related knowledge1, STRUTS2 framework AnalysisHolly Version Life case:Film and television Company (filming) ActionmapperMedia company (packaging star) actionmappingStar ActionBroker Actionproxy (Agent object)The unit is located actioninvocationHandyman Interceptor (Interceptor)Recursive ==992. Struts2 Working principle3. How interceptors workIn

Ext.: http://www.cnblogs.com/west-link/archive/2011/06/22/2086591.htmlThe Interceptor mode gives us a way to intercept the method call or message, the whole process is automatic and transparent, and here is a simple interceptor:You can see that the interceptor can access the input parameters of the method call and return the results, so that the interceptor can d

This article will introduce you to the Struts2 control interceptor. I hope this tutorial will be helpful to you. The role of the interceptor is similar to that of the filter used for development based on the strtus framework. Configure the default Interceptor. the interceptor name here is defaultStack. The Co

page and returnsFalse so that the request will not be processed.5>java Source:Package Com.yjde.web.controller;Import Java.io.PrintWriter;Import Javax.servlet.http.HttpServletRequest;Import Javax.servlet.http.HttpServletResponse;Import Org.springframework.stereotype.Controller;Import org.springframework.web.bind.annotation.PathVariable;Import org.springframework.web.bind.annotation.RequestMapping;Import Org.springframework.web.bind.annotation.RequestM

There are many concepts and nouns in spring, some of which are different, but functionally, the total feel is similar, such as filters, interceptors, AOP, and so on.Filters filter, Spring MVC Interceptor Interceptor, aspect-oriented programming AOP, in fact, have a certain interception function, is to intercept a certain surface, and then do some processing.Here is the main thing to do is AOP, as for their

$httpAngularJS $http Service allows us to communicate with the background by sending HTTP requests. In some cases, we want to be able to capture all requests and operate before sending them to the server. In other cases, we want to capture the response and process it before the completion call is complete. A good example is handling global HTTP exceptions. Interceptors (interceptors) emerged. This article will introduce AngularJS interceptors, and give a few useful examples.What is an

Page 1 of 2The first tutorial concentrate on creating a basic interceptor, but useful in a typical Web application.This is very common, developer wants to restrict the browser to cache rendered pages. And the the-the-the-used to achieve are having code similar to the following mostly in the JSP pages to prevent caching. Either we have this code in all the JSPs pages or more friendly A-common JSP page where we have this code an D include it in all the