cellular interceptor

The Java Web Project uses the structure of the spring+spring mvc+hibernate, and the methods in the controller are used to process the front-end access information. The controller returns a Modelandview object to the front end or only JSON-formatted data by invoking the service for business processing. It is convenient for development and debugging if you can get information about HTTP requests that are processed in the backend program. Interceptor, wh

The STRUTS2 project uses the IF tag of struts to determine the session, so that users who are not logged on cannot see the page, but this is now only in the view layer, if the user is not logged in directly in the Address bar to enter the address of the logged in user to access, Then the corresponding action will be executed, just do not let the user see it. This is obviously not good, so we have studied the authorization of Struts2. The core of the authority is the business logic, which is much

Method one uses the httpsession that the servlet comes withNote the point: httpsession should be used as a parameter of the method //log in public boolean customerlogin (HttpSession　　　　httpSession) { Httpsession.setattribute ( " customer " } // Exit Public String customerout (HttpSession HttpSession) { httpsession.removeattribute ( "Customer"); return"Login"; }Method Two: Use Spring's @sessionattributes ("Logincustomer") / /log in @Controller @SessionAttri

The 1.spring boot Interceptor is default Handlerinterceptoradapter Abstracthandlermapping Userroleauthorizationinterceptor Localechangeinterceptor Themechangeinterceptor 2. Configuring the Spring MVC Interceptor Webmvcconfigureradapter public class Webappconfig extends Webmvcconfigureradapter 3. Implement the Add Interceptor method

Abstract classAbstractinterceptorImplements the interceptor interface and provides empty implementations of the init and destroy methods. If our interceptor does not need to open resources, you do not need to implement these two methods. It can be seen that it is easier to implement a custom interceptor by inheriting the abstractinterceptor abstract class. In the

By default, if we define an interceptor for an action, the interceptor intercepts all methods in the action. However, in some cases, we do not want to intercept all methods. We only need to intercept some specific methods. In this case, we need to use the method filter feature of the struts2 interceptor. To implement method filtering, struts2 providesMethodfilter

Preface : For example, there is a scenario, when the user is not logged in, click on the project, the investment project will need to prompt the user to sign in, and then pop up the login page, when the user login is completed, you can manipulate the corresponding page. In this case, permission interception is required, so using interceptor is invaluable.Principle IntroductionWhen the user clicks on an action button, initiates a request to the server,

Use of the alias interceptor and the alias interceptor In an SSH project, sometimes one Action needs to jump to another Action. There are two ways to achieve jump between actions, one is chain and the other is redirectAction. The difference between the two methods is that chain is redirected on the server, data can be shared between different actions, while redirectAction redirects to the client. Use chain

Original,That's how we configured the Interceptor. The original configuration method combined with the new namespace mvc:interceptors configuration :Is that right???Since the registration here again causes no opensessioninviewinterceptor, no session is produced Exception So: Discard the original interceptor configuration to embrace the new method: Spring Original

Spring-boot Join Interceptor InterceptorSpring MVC Interceptor Spring-boot to 1.spring boot interceptors by default Handlerinterceptoradapter abstracthandlermapping Userroleauthorizationinterceptor LocaleChangeInterceptor Themechangeinterceptor 2. Configuring the Spring MVC Interceptor Webmvcconfigureradapter Java code public class Webappconfig extends Webmvcco

FileUploadInterceptor interceptor notes, interceptor When the request form contains a file, the FileUploadInterception interceptor automatically applies to this file. Form: We can add three attributes to the action to receive files, file types, and file names. The Demo is as follows: * package com.example; * * import java.io.File; * import com.opensymp

1. Interceptor Use(1) block non-logged users to access certain links directly(2) Intercept log messages(3) Interception of illegal attacks, such as SQL injection2. Involving JAR, class(1) Spring-webmvc.jar(2) Handlerinterceptor (Org.springframework.web.servlet: interface),Asynchandlerinterceptor (Org.springframework.web.servlet: interface),Handlerinterceptoradapter (Org.springframework.web.servlet.handler.HandlerInterceptorAdapter: abstract Class)3. B

The filter blocker dynamically intercepts strings and entity classes to check for keywords, and changes to strings and dynamic entity classes are resubmitted.First step: New Interceptor class name and inherit ActionFilterAttribute:CustomerFilterAttribute:ActionFilterAttributeStep two: Implement in Method onactionexecutingStep three: Add [Customerfilter] above the corresponding action or class to enable interception control filtering on the action or c

[Mybatis] 1. Mybatis interceptor and mybatis interceptorPrinciple of MyBatis interceptor Http://www.cnblogs.com/fangjian0423/p/mybatis-interceptor.htmlMyBatis Interceptor (implement paging function) Http://www.cnblogs.com/jethypc/p/5149183.htmlThe principle of implementing the Interceptor (plug-in) through dynamic pr

Struts2 default interceptor defastack stack, struts2 default interceptor When Struts2.3.20 is used for the first time, the foreground page transmits a value to the background. How can I always prompt that the value is null? I forgot to introduce the defaultStack interceptor in the action of the struts configuration file for a long time, therefore, even if everyth

This article is mainly about the handling of interceptors, here is the next org.springframework.web.servlet under the HandlerinterceptorJava InterceptorLook at the code through the Handlerinterceptor class Public Interface handlerinterceptor { booleanthrows Exception; void throws Exception; void throws Exception;}Interceptor processing is in, three methods of the meaning of a look to understand, do not do too much introductionSo what do we

Original,That's how we configured the Interceptor. The original configuration method combined with the new namespace mvc:interceptors configuration :Is that right???Because There's another one here that leads to no opensessioninviewinterceptor, no session . Exception So: Discard the original interceptor configuration to embrace the new method: Spring Original In