File Upload

FileUploadForm.java

package org.apache.myfaces.examples.misc;

import java.io.IOException;

import org.apache.myfaces.custom.fileupload.UploadedFile;

import javax.faces.context.FacesContext;

public class FileUploadForm

{

private UploadedFile _upFile;

private String _name = "";

// getters and setters

public String upload() throws IOException

{

FacesContext facesContext = FacesContext.getCurrentInstance();

facesContext.getExternalContext().getApplicationMap().put("fileupload_bytes", _upFile.getBytes());

facesContext.getExternalContext().getApplicationMap().put("fileupload_type", _upFile.getContentType());

facesContext.getExternalContext().getApplicationMap().put("fileupload_name", _upFile.getName());

return "ok";

}

public boolean isUploaded()

{

FacesContext facesContext = FacesContext.getCurrentInstance();

return facesContext.getExternalContext().getApplicationMap().get("fileupload_bytes")!=null;

}

}

fileupload_showing.jsp

<%@ page import="java.io.File,

java.io.InputStream,

java.io.FileInputStream,

java.io.OutputStream"%><%@ page session="false" %><%

String contentType = (String)application.getAttribute("fileupload_type");

String fileName = (String)application.getAttribute("fileupload_name");

String allowCache = request.getParameter("allowCache");

String openDirectly = request.getParameter("openDirectly");

if(allowCache == null || allowCache.equalsIgnoreCase("false"))

{

response.setHeader("pragma", "no-cache");

response.setHeader("Cache-control", "no-cache, no-store, must-revalidate");

response.setHeader("Expires", "01 Apr 1995 01:10:10 GMT");

}

if(contentType!=null)

{

response.setContentType(contentType);

}

if(fileName != null)

{

fileName = fileName.substring(fileName.lastIndexOf('\\')+1);

fileName = fileName.substring(fileName.lastIndexOf('/')+1);

StringBuffer contentDisposition = new StringBuffer();

if(openDirectly==null || openDirectly.equalsIgnoreCase("false"))

{

contentDisposition.append("attachment;");

}

contentDisposition.append("filename=\"");

contentDisposition.append(fileName);

contentDisposition.append("\"");

response.setHeader ("Content-Disposition", contentDisposition.toString());

}

byte[] bytes = (byte[])application.getAttribute("fileupload_bytes");

if (bytes != null)

{

response.getOutputStream().write(bytes);

}

%>