...

package com.example.actions;

import com.opensymphony.xwork2.ActionSupport; 
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Actions;

public class HelloWorld extends ActionSupport {
  @Action("/different/url")
  public String execute() {
    return SUCCESS;
  }

  @Action("/another/url")
  public String doSomething() {
    return SUCCESS;
  }
}

This example defines a second URL that is not fully qualified. This means that the namespace for the URL is determined using the Java package name rather than the Action annotation.

Result(s) annotation

The Convention plugin allows action classes to define different results for an action. Results fall into two categories, global and local. Global results are shared across all actions defined within the action class. These results are defined as annotations on the action class. Local results apply only to the action method they are defined on. Here is an example of the different types of result annotations:

package com.example.actions;

import com.opensymphony.xwork2.ActionSupport; 
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Actions;
import org.apache.struts2.convention.annotation.Result;
import org.apache.struts2.convention.annotation.Results;

@Results({
  @Result(name="failure", location="fail.jsp")
})
public class HelloWorld extends ActionSupport {
  @Action(value="/different/url", 
    results={@Result(name="success", location="http://struts.apache.org", type="redirect")}
  )
  public String execute() {
    return SUCCESS;
  }

  @Action("/another/url")
  public String doSomething() {
    return SUCCESS;
  }
}

Namespace annotation

The namespace annotation allows the namespace for action classes to be changed instead of using the convention of the Java package name. This annotation can be placed on an action class or within the package-info.java class that allows annotations to be placed on Java packages. When this annotation is put on an action class, it applies to all actions defined in the class, that are not fully qualified action URLs. When this annotation is place in the package-info.java file, it changes the default namespace for all actions defined in the Java package. Here is an example of the annotation on an action class:

package com.example.actions;

import com.opensymphony.xwork2.ActionSupport; 
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Namespace;

@Namespace("/custom")
public class HelloWorld extends ActionSupport {
  @Action("/different/url")
  public String execute() {
    return SUCCESS;
  }

  @Action("url")
  public String doSomething() {
    return SUCCESS;
  }
}

In this example, the action will respond to two different URLs /different/url and /custom/url.

Here is an example of using this annotation in the package-info.java file:

@org.apache.struts2.convention.annotation.Namespace("/custom")
package com.example.actions;

This changes the default namespace for all actions defined in the package com.example.actions. This annotation however doesn't apply to sub-packages.

ResultPath annotation

The ResultPath annotation allows applications to change the location where results are stored. This annotation can be placed on an action class and also in the package-info.java file. Here is an example of using this annotation:

package com.example.actions;

import com.opensymphony.xwork2.ActionSupport; 
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.ResultPath;

@ResultPath("/WEB-INF/jsps")
public class HelloWorld extends ActionSupport {
  public String execute() {
    return SUCCESS;
  }
}

The result for this class will be located in WEB-INF/jsps rather than the default of WEB-INF/content.

ParentPackage annotation

The ParentPackage annotation allows applications to define different parent XWork packages for specific action classes or Java packages. Here is an example of using the annotation on an action class:

package com.example.actions;

import com.opensymphony.xwork2.ActionSupport; 
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.ParentPackage;

@ParentPackage("customXWorkPackage")
public class HelloWorld extends ActionSupport {
  public String execute() {
    return SUCCESS;
  }
}

Configuration reference