Do you mean something like this? you can use actions to get data as a
stream, for example to use it with the img-tag
/****action****/
public class DiagramGanttAction extends DownloadAction {
protected StreamInfo getStreamInfo(ActionMapping mapping, ActionForm
form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
String contentType = "image/png";
byte[] imagebytes = null; // Get the bytes from somewhere
final GanttDiagram gantt = new
GanttDiagram(project.getName(),project);
imagebytes = gantt.getImagearray();
return new ByteArrayStreamInfo(contentType, imagebytes);
}
protected class ByteArrayStreamInfo implements StreamInfo {
protected String contentType;
protected byte[] bytes;
public ByteArrayStreamInfo(String contentType, byte[] bytes) {
this.contentType = contentType;
this.bytes = bytes;
}
public String getContentType() {
return contentType;
}
public InputStream getInputStream() throws IOException {
return new ByteArrayInputStream(bytes);
}
}
}
now you can use it in your jsp:
<%@ page language="java" pageEncoding="ISO-8859-1"%>
<%@ taglib uri="http://struts.apache.org/tags-bean"; prefix="bean"%>
<%@ taglib uri="http://struts.apache.org/tags-html"; prefix="html"%>
<html:img action="/diagramGantt" alt="hier müßte das Bild kommen" />
struts-config:
<action
attribute="diagramGanttForm"
input="gantt.jsp"
name="diagramGanttForm"
path="/diagramGantt"
scope="request"
type="kpm.presentation.actions.DiagramGanttAction"
validate="false" />
</action-mappings>
Lalchandra Rampersaud schrieb:
Hi
Is it possible execute an action which just puts data into the request
object without returning an ActionFoward?
I tried to return null but the page just becomes blank.
Ravi
__________________________________________
Participe en Universidad 2008.
11 al 15 de febrero del 2008.
Palacio de las Convenciones, Ciudad de la Habana, Cuba
http://www.universidad2008.cu
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