private InputStream inputStream;

    public InputStream getInputStream() {

    return inputStream;

    }

    public String execute() throws Exception {

    inputStream = new StringBufferInputStream("ok");

    return SUCCESS;

    }

}

struts.xml:

<action name="text-result" class="actions.TextResult">

<result type="stream">

<param name="contentType">text/html</param>

<param name="inputName">inputStream</param>

</result>

</action>

    HttpServletResponse response=ServletActionContext.getResponse();

    response.setContentType("text/xml");

    response.setCharacterEncoding("UTF-8");

    response.setHeader("Cache-Control","no-cache"); //HTTP 1.1

    response.setHeader("Pragma","no-cache"); //HTTP 1.0

    response.setDateHeader ("Expires", 0); //prevents caching at the proxy server

    String xmlValue="";

    try{

    WebGame wg=webGameService.getObjectById(Integer.parseInt(id));

    wg.setWgViewCount(wg.getWgViewCount()+1);

    webGameService.modifyObject(wg);

    xmlValue="<sup ";

    xmlValue+="result='"+wg.getWgViewCount()+"' ";

    xmlValue+="good='"+wg.getWgBallot()+"' ";

    xmlValue+="id='"+id+"' ";

    xmlValue+="/>";

    }

    catch(Exception e){

    xmlValue="<sup ";

    xmlValue+="error='"+e.getMessage()+"' ";

    xmlValue+="/>";

    }

    xmlValue=xmlValue.replace("&", "&amp;");

    System..out.println(xmlValue);

    response.getWriter().write(xmlValue);

    return null;

}

struts.xml

<action name="updateViewCount" class="struts.action.WebEvalAction" method="updateViewCount">

</action>