FileDownload

package com.fh.util;

import java.io.BufferedOutputStream;
import java.io.OutputStream;
import java.net.URLEncoder;

import javax.servlet.http.HttpServletResponse;

/**
 * 下载文件
 * 创建人：FH Q
 * 创建时间：2014年12月23日
 * @version
 */
public class FileDownload {

    /**
     * @param response 
     * @param filePath      //文件完整路径(包括文件名和扩展名)
     * @param fileName      //下载后看到的文件名
     * @return  文件名
     */
    public static void fileDownload(final HttpServletResponse response, String filePath, String fileName) throws Exception{  
           
        byte[] data = FileUtil.toByteArray2(filePath);  
        fileName = URLEncoder.encode(fileName, "UTF-8");  
        response.reset();  
        response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");  
        response.addHeader("Content-Length", "" + data.length);  
        response.setContentType("application/octet-stream;charset=UTF-8");  
        OutputStream outputStream = new BufferedOutputStream(response.getOutputStream());  
        outputStream.write(data);  
        outputStream.flush();  
        outputStream.close();
        response.flushBuffer();
        
    } 

}