mediaoutput sample not working
i try to use the mediaoutput sample but can't get it work. mediadata is always null
my page is
<?xml version="1.0" encoding="ISO-8859-1"?>
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:rich="http://richfaces.org/rich"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:s="http://jboss.com/products/seam/taglib">
<h:panelGrid columns="2" >
<h:panelGroup id="thumbs">
</h:panelGroup>
<a4j:mediaOutput element="img" cacheable="false" session="false"
createContent="#{PDFImaging.paintpage}" value="#{mediaData}" mimeType="image/png" />
</h:panelGrid>
</ui:composition>
java cbeans
public class MediaData implements Serializable{
private static final long serialVersionUID = 1L;
Integer Width=50;
Integer Height=110;
Color Background=new Color(0,0,0);
Color DrawColor=new Color(255,255,255);
public MediaData() {
}
public Color getBackground() {
return Background;
}
public void setBackground(Color background) {
Background = background;
}
public Color getDrawColor() {
return DrawColor;
}
public void setDrawColor(Color drawColor) {
DrawColor = drawColor;
}
public Integer getHeight() {
return Height;
}
public void setHeight(Integer height) {
Height = height;
}
public Integer getWidth() {
return Width;
}
public void setWidth(Integer width) {
Width = width;
}
}
@Name("PDFImaging")
@Scope(ScopeType.PAGE)
public class PDFImaging {
String pdfsource;
String currentimage;
ArrayList<MediaBean> thumbs = new ArrayList<MediaBean>();
boolean lbinit =false;
public void init() {
int count=0;
File dir= new File("D:/seampages");
for(File f : dir.listFiles()) {
if (f.isDirectory() == false) {
MediaBean mb = new MediaBean();
mb.setImagefile(f.getAbsolutePath());
System.out.println("Adding " + f.getAbsolutePath());
thumbs.add(mb );
count++;
}
if ( count > 20 ) break;
}
lbinit = true;
}
public void paintpage(OutputStream out, Object data) throws IOException{
System.out.println("Paint page " );
if ( data != null) System.out.println(data.getClass().getName());
else System.out.println("is null!!!!");
try {
if (data instanceof MediaData) {
MediaData paintData = (MediaData) data;
BufferedImage img = new BufferedImage(paintData.getWidth(),paintData.getHeight(),BufferedImage.TYPE_INT_RGB);
img = ImageIO.read(new File("D:/seampages/1.png"));
ImageIO.write(img,"jpeg",out);
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public String getPdfsource() {
return pdfsource;
}
public void setPdfsource(String pdfsource) {
this.pdfsource = pdfsource;
}
public String getCurrentimage() {
return currentimage;
}
public void setCurrentimage(String currentimage) {
this.currentimage = currentimage;
}
public ArrayList<MediaBean> getThumbs() {
if ( lbinit == false ) init();
return thumbs;
}
public void setThumbs(ArrayList<MediaBean> thumbs) {
this.thumbs = thumbs;
}
}
