java上传下载文件，中文文件名不显示或乱码

参考这里：https://my.oschina.net/pingpangkuangmo/blog/376332

上传文件页面：

    选择一个文件:
    
    


    

上传文件后，由springmvc处理请求：

/**
	 * 上传文件
	 * @param file
	 * @throws IOException 
	 */
	@RequestMapping("/fileUpload")
	public ModelAndView fileUpload(@RequestParam("uploadFile") CommonsMultipartFile file) {
		//获取文件名称
		String fileName = file.getOriginalFilename();
		//保存文件
		File tempfile = new File("E:/zzhtml/"+fileName);
		OutputStream os = null;
		InputStream is = null;
		try {
			is = file.getInputStream();
			byte[] bs = new byte[1024];  
	        int len;  
	        os = new FileOutputStream(tempfile);  
	        while ((len = is.read(bs)) != -1) {  
	            os.write(bs, 0, len);  
	        }  
		} catch (IOException e) {
			e.printStackTrace();
		} finally{        
	        try {
	        	if(os!=null){
	        		os.close();
	        	}
	        	if(is!=null){
	        		is.close(); 
	        	}
			} catch (IOException e) {
				e.printStackTrace();
			}  	   
		}
		ModelAndView mv = new ModelAndView("uploadSuccess");
		mv.addObject("fileName", fileName);
        return mv;  
	}
	

下载文件页面：

上传成功
${fileName }

点击下载文件，后台处理：

@RequestMapping("/fileDown")
	public String fileDown(@RequestParam("fileName")String fileName,HttpServletResponse response) throws UnsupportedEncodingException{
		String path="E:/zzhtml/";
		String tempFileName = new String(fileName.getBytes("ISO8859-1"), "UTF-8");
		//1.设置文件ContentType类型，这样设置，会自动判断下载文件类型  
        response.setContentType("application/x-msdownload");  
        //2.设置文件头：最后一个参数是设置下载文件名(假如我们叫a.pdf)  
        response.setHeader("Content-Disposition", "attachment;fileName="+new String(tempFileName.getBytes("GBK"),"ISO8859-1"));  //这里的fileName要是ISO8859-1编码
        ServletOutputStream out = null;  
        FileInputStream is = null ;
        //通过文件路径获得File对象 
        File file = new File(path +tempFileName);   
        try {  
        	is= new FileInputStream(file);  
            //3.通过response获取ServletOutputStream对象(out)  
            out = response.getOutputStream();  
            int b = 0;  
            byte[] buffer = new byte[1024];  
            while ((b=is.read(buffer,0,buffer.length))!= -1){  
                //4.写到输出流(out)中  
                out.write(buffer,0,b);  
            }  
            out.flush();  
        } catch (IOException e) {  
            e.printStackTrace();  
        }finally{
        	try {
        		if(is!=null){
        			is.close();
        		}
        		if(out!=null){
        			out.close();
        		}
			} catch (IOException e) {
				e.printStackTrace();
			}  
        }
		return null;
	}