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  • JavaWeb导出Excel问题小计

    注意,要在写入response.getOutputStream()输出流前设置response相关配置,否则无法写入response配置

    进入如response.setHeader源码,可知当response的outputstream有数据后便不可以设置response其他配置

     正确代码,可如下

        @RequestMapping("/export")
        public void export(HttpServletResponse response) throws Exception {
            ByteArrayOutputStream outputStream=new ByteArrayOutputStream();
            String fileName = excelService.exportExcel(outputStream);
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            response.setCharacterEncoding("UTF-8");
            response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
         //一定在response设置后再写入数据 response.getOutputStream().write(outputStream.toByteArray()); System.out.println("导出成功"); }

      

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  • 原文地址:https://www.cnblogs.com/hujiapeng/p/14029182.html
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