java上传下载文件，中文文件名不显示或乱码

来源：互联网发布：linux反向域名解析编辑：程序博客网时间：2024/04/29 20:52

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

上传文件页面：

<body><form method="post" action="${pageContext.request.contextPath }/fileUpload" enctype="multipart/form-data">    选择一个文件:    <input type="file" name="uploadFile" />    <br/><br/>    <input type="submit" value="上传" /></form></body>

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：

<body>上传成功<br><a href="${pageContext.request.contextPath }/fileDown?fileName=${fileName}">${fileName }</a></body>

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;}

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