filedownloadprovider.java

基于Ajax的WebOS————PhoneShow案例

package com.cownew.phoneshow.framework.common;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;

import org.apache.commons.io.IOUtils;

import nextapp.echo2.app.filetransfer.DownloadProvider;

public class FileDownloadProvider implements DownloadProvider
{
	private File file;

	public FileDownloadProvider(File file)
	{
		super();
		this.file = file;
	}

	public String getContentType()
	{
		return "application/unkown";
	}

	public String getFileName()
	{
		return file.getName();
	}

	public int getSize()
	{
		return -1;
	}

	public void writeFile(OutputStream os) throws IOException
	{
		FileInputStream fis = new FileInputStream(file);
		try
		{
			IOUtils.copy(fis, os);
		} finally
		{
			IOUtils.closeQuietly(fis);
		}
	}

}