Common interceptors for STRUTS2-----

Struts2 (xwork) provides an interceptor function description:

 

Interception Device	name	Description
Alias Interceptor	Alias	The request parameter is converted between different requests and the request content is unchanged.
Chaining Interceptor	Chain	The property of the previous action can be accessed by the latter action, and is now used in conjunction with the chain type of result (<result type= "Chain" >).
Checkbox Interceptor	CheckBox	Added a checkbox to automatically process the code, setting the contents of the unchecked checkbox to False, while HTML does not submit a checkbox that is not checked by default.
Cookies Interceptor	Cookies	Use the configured Name,value to refer to cookies
Conversion Error Interceptor	Conversionerror	Add the error from Actioncontext to the action's property field.
Create Session Interceptor	CreateSession	The httpsession is automatically created to serve interceptors that need to use the httpsession.
Debugging Interceptor	Debugging	Provide different debugging pages to show the internal data condition.
Execute and Wait Interceptor	Execandwait	Executes the action in the background and takes the user to an intermediate waiting page.
Exception Interceptor	exception	Position the exception to a screen
File Upload Interceptor	FileUpload	Provide file Upload function
I18N Interceptor	i18n	Record User-selected locale
Logger Interceptor	Logger	The name of the output action
Message Store Interceptor	Store	Stores or accesses the message, Error, field error, and so on of the action class that implements the Validationaware interface.
Model Driven Interceptor	Model-driven	If a class implements Modeldriven, the results of Getmodel are placed in the value stack.
Scoped Model Driven	Scoped-model-driven	If an action implements Scopedmodeldriven, the interceptor will remove the model from the corresponding scope by invoking the Setmodel method of the action to put it inside the action.
Parameters Interceptor	Params	Set the parameters in the request to the action.
Prepare Interceptor	Prepare	If Acton implements Preparable, the interceptor invokes the prepare method of the action class.
Scope Interceptor	Scope	A simple way to put the action state into session and application.
Servlet Config Interceptor	ServletConfig	Provides access to HttpServletRequest and HttpServletResponse methods, which are accessed in map mode.
Static Parameters Interceptor	Staticparams	From the Struts.xml file, set the contents of <param> in <action> to the corresponding action.
Roles Interceptor	Roles	Determines whether the user has a role specified by Jaas, otherwise it is not executed.
Timer Interceptor	Timer	Output the time the action was executed
Token Interceptor	Token	Use tokens to avoid double-clicking
Token Session Interceptor	Tokensession	Same as token interceptor, but when you double-click to store the requested data in session
Validation Interceptor	Validation	Verifies the submitted data using the content defined in the Action-validation.xml file.
Workflow Interceptor	Workflow	Call the action's Validate method, and once the error returns, relocate to the input screen
Parameter Filter Interceptor	N/A