Thread: [jsp/jsf] Send string(file name) to other class

Hi i have a little problem
I have a two class Upload - class upload file to server and class filter
but now in class filter i need name uploaded file i try something like this:

class upload:

public class uploadclass {
 
	private UploadedFile uploadedFile;
        private String fileName;
 
    public String submit() {
	String prefix = FilenameUtils.getBaseName(uploadedFile.getName());
        String suffix = FilenameUtils.getExtension(uploadedFile.getName());
 
 
        File file = null;
        OutputStream output = null;
 
        try {
            file = File.createTempFile(prefix , "." + suffix, new File("c:/upload"));
 
            output = new FileOutputStream(file);
            IOUtils.copy(uploadedFile.getInputStream(), output);
 
            [B]fileName = file.getName();
            filter fil=new filter();
           fil.setNazwa(fileName);[/B]
 
            System.out.println(fileName);
 
        } catch (IOException e) {
           if (file != null) file.delete();
           FacesContext.getCurrentInstance().addMessage("uploadForm", new FacesMessage(
           FacesMessage.SEVERITY_ERROR, "File upload failed with I/O error.", null));
           e.printStackTrace();
        }
        finally {
            IOUtils.closeQuietly(output);
         }
        return "success";
    }
   public UploadedFile getUploadedFile() {
        return uploadedFile;
    }
    public  String getFileName() {
    	return fileName;
    }
    public void setUploadedFile(UploadedFile uploadedFile) {
        this.uploadedFile = uploadedFile;
    }
 
}

this:
fileName = file.getName();
filter fil=new filter();
fil.setNazwa(fileName);

And filter class

public class filter {
	private String name;
	public String filename;
 
	public void aaa(){
	        filename=getName();
		System.out.println(filename);
	}
	public void setName(String name) {
	      this.name = name;
	 }
	 public String getName() {
	      return name;
	 }
 
}

When System.out.println(filename); is execute i have filename on console null;
submit() and aaa() is active on buttonclick
what i doing wrong?

Originally Posted by Norm

Where in the code is filename given a non-null value? The only way you will know if the value is not null is if you print it.
Add printlns to all the places where a value is passed and set to see where the values are coming from and how they are being set.

Originally Posted by Norm

Where in the code is filename given a non-null value?

here i creat a new file on disk file = File.createTempFile(prefix , "." + suffix, new File("c:/upload"));
and then fileName = file.getName();

examlpe i upload Desert.jpg file
then in fileName i have something like this Desert179344675636454681.jpg

in this public void setName(String name) {
this.name = name;
System.out.println(nazwa+"setnazwa");
}
i have Desert179344675636454681.jpg

but when i try to get file name
public String getNazwa() {
System.out.println(nazwa+"getnazwa");
return nazwa;
}

file name is null...

this construction is correct filename=getNazwa(); ?


sry for cross post but i search help everywhere....

thx for help
but next problem... i can't display uploaded file on side
i do something like this

side.jsp

<h:graphicImage id="up" value="C:/upload/#{uploadclass.ImgBeforeFilter}" > </h:graphicImage>

and in uploadclass:

public String ImgBeforeFilter(){
		String img_before=getFileName();
		return img_before;
	}

and i have exception

javax.servlet.ServletException: /side.jsp(16,0) 'C:/upload/#{uploadclass.ImgBeforeFilter}' Property 'ImgBeforeFilter' not found on type package1.uploadclass
javax.faces.webapp.FacesServlet.service(FacesServl et.java:321)
org.apache.myfaces.webapp.filter.ExtensionsFilter. doFilter(ExtensionsFilter.java:357)

EDIT

OK nvm
I have to

public void setImg(String img) {
this.img=img;
}
public String getImg() {return img;}

a take relative path something like this

ExternalContext context=FacesContext.getCurrentInstance().getExternalContext();
    String mainpath=context.getRealPath("WEB-INF/upload/");

i have path like this:
C:\Users\user\Desktop\eclipse-jee-indigo-SR1-win32-x86_64\.metadata\.plugins\org.eclipse.wst.server.c ore\tmp1\wtpwebapps\jee\WEB-INF\upload
this is corect?

on side i try display image
<h:graphicImage id="up" value="WEB-INF/upload/a.png" > </h:graphicImage>
and the path on side to image is
localhost:8080/jee/WEB-INF/upload/a.png

image is not display
what is wrong?

and how can i place all of the related images in your application package?