struts2 interceptor

actions in the module must share the same lifecycle.• Struts2 supports creating different lifecycles for each Action through Interceptor Stacks. The stack can be used with different actions as needed.Struts. action. extensionThe URL extension to use to determine if the request is meant for a Struts actionUse the URL extension to determine whether the request is used as a Struts action, that is, to set the

In the previous article we analyzed the Arouter routing jump, this article we analyze the Interceptor interceptor. First, the interceptor also produces the corresponding file during the IDE compilation process. (See Arouter source Analysis 01-Compile the generated file) public class arouter$ $Interceptors $ $app implements Iinterceptorgroup { @Override public

sequence diagram: The workflow of Struts2 is a core content of Struts2. Other content is also centered on its workflow, which is based on the extension. This blog is also a more detailed theoretical description of the previous article. Struts2 Workflow The main workflow of struts2 is as follows:First, an http reques

"Encapsulates an INPUT element in a Web page as a (request) data Object", an object that isThe actioninvocation type.For Xwork, the webwork component of the front-end provides a data structure of a map type. The action is oriented to the data structure provided by the model object. When and where do you convert these two different data structures?Write a helper class to do the work, and call him to complete the conversion work before each action call by the framework code.Xwork This step through

-validation.xml configuration struts.xml file Add Manual completion of validation requires overriding the Validate () method, overriding the ValidateXxx () method First, understand the interceptor :The 1.struts2 interceptor is a method that accesses an action or action, the field is intercepted before or after it, and the

SpringMVC-detailed interceptor process, use and customize interceptor First, let's look at what the interceptor does: 1. Logging: records the request information logs for information monitoring, information statistics, and calculation of PV (PageView. 2. Permission check: for example, if logon is detected, go to the processor check to check whether or not to log

First, Interceptor method The EJB3 can intercept and overwrite bean methods through interceptors. This is somewhat like the around in AOP. The around method of AOP can modify the return value, parameter value of the blocked method, and even cancel the execution of the blocked method. EJB3 interceptors can be used in stateless session beans, stateful session beans, and message-driven bean (MDB) methods. The easiest way to implement interceptors is to

. xml) through ConfigurationManager and finds the Action class to be called.6. Create an ActionInvocation instance using ActionProxy7. ActionInvocation calls the real Action. Of course, this involves the call of the relevant interceptor (interceptor)8. After the Action is executed, ActionInvocation creates the Result and returns the Result. You can also perform some actions before returning the Result.What

of the prehandle method of the currently-owned true is the same. The posthandle method, as the name implies, is executed after the current request is processed, that is, after the controller method call, but it is called before the view is returned to render dispatcherservlet. So we can manipulate the modelandview object after controller processing in this method. The posthandle method is called in the opposite direction to prehandle, which means that the posthandle method of the first declarat

Two-step configuration Spring MVC Interceptor Interceptor One interceptor first step to implement Handlerinterceptor interface The second step registers into spring Two-step configuration Spring MVC Interceptor Interceptor A. Interceptor