web文件上载，路径或文件名中文乱码

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/**

* 附件下载

* @param dlPath 文件绝对路径

* @throws Exception?

*/

public void dl(String dlFilePath) throws Exception{

FacesContext context = FacesContext.getCurrentInstance();?

HttpServletResponse response = (HttpServletResponse)context.getExternalContext().getResponse();

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ServletContext servletContext = (ServletContext)context.getExternalContext().getContext();

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String fileFullName = servletContext.getRealPath(dlFilePath);

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File file = new File(fileFullName);

if(file.isDirectory() || !file.isFile()) return;

response.setContentType("application/x-msdownload");?

response.setCharacterEncoding("UTF-8");

response.setHeader("Content-Disposition", "attachment; filename=\"" + DataUtil.encodeFileName(file.getName())+"\"");

response.getOutputStream().write(DataUtil.fileToByte(file));

response.getOutputStream().flush();

context.responseComplete();

}