Apache Struts 2: Redirecting to a link and another Action

Apache Struts is a project developing an open-source web application framework for Java EE web application development that promotes a model–view–controller (MVC) architectural approach through extensions the Java Servlet web API. [Definition from Wikipedia]

To know more about Apache Struts 2, click here.

Redirect To JSP Page

It is very simple to redirect to a JSP(JavaServer Pages) which is a technology that helps software developers create dynamically generated web pages based on HTML, XML, or other document types.

<ACTION NAME=”LOGIN” CLASS=”LOGINACTION”>
    <RESULT NAME=”INPUT”>LOGIN.JSP</RESULT>
</ACTION>

Redirect To Action

Assuming that you have an Action called LoginAction and HomeAction,

<ACTION NAME=”LOGIN” CLASS=”LOGINACTION”>
    <RESULT NAME=”SUCCESS” TYPE=”REDIRECTACTION”>
        <PARAM NAME=”ACTIONNAME”>HOME</PARAM>
    </RESULT>
</ACTION>
<ACTION NAME=”HOME” CLASS=”HOMEACTION”>
    <RESULT NAME=”SUCCESS”>HOME.JSP</RESULT>
</ACTION>

You can also pass parameters to an action while redirecting and call another Page if the input are not provided in the initial page like this.

<action name=”login” class=”LoginAction”>
    <result name=”success” type=”redirectAction”>
        <param name=”actionName”>home</param>
        <param name=”userName”>${userName}</param>
    </result>
    <result name=”input”>login.jsp</result>
</action>

Description:

If LoginAction returns “success” then go to “home” action (which calls HomeAction).

If input values are not properly provided to LoginAction and it returns “input” or “Action.INPUT”, then open login.jsp.