Using the Servlet API step in Struts2

Using the Servlet API step in Struts2

Objects such as request are declared in the action class

Map<string, object> request;

Get Actioncontext instances

Actioncontext Ac=actioncontext.getcontext ();

Get objects such as request

Request= (map<string, object>) ac.get ("request");

Saving data in objects such as request

Request.put ("loginaccess", "Login Location: Beijing");

Request.get ("loginaccess");

Get the way to save data in the page

<s:property value= "#request. Loginaccess"/> Access servlet API

Other ways to access the servlet API

Previous ways to get Servlet API objects

Get Request:ac.get Yourself ("request")

Structs2=structs1 's popularity and market +webwork techniques convert a string to a OGRL expression%{}

Get Session:ac.getSession Yourself ()

Let "someone else" provide you with the Servlet API object

Get the Servlet API object by implementing the appropriate interface

Obtaining the request requires implementing the Requestaware interface

Getting the session requires implementing the Sessionaware interface

Get application need to implement Applicationaware interface

Using the Servlet API step in Struts2