在实际运用中，数据导入，会遇到模板下载，但是下载后，Excel文件损坏无法打开

模板位置

下载代码

@PostMapping("/downloadExcel")
    public void downloadExcel(HttpServletResponse response) {
        try {

            ClassPathResource resource = new ClassPathResource("excel" + File.separator + "限制出卡模板.xlsx");
            // 获取文件
            File file = resource.getFile();
            logger.info("文件名称：{}", file.getName());

            String fileName = "payCardLimit" + DateUtil.getTimeFormat(new Date()) + ".xlsx";
            // 配置文件下载
            response.setContentType("application/vnd.ms-excel");
            response.setCharacterEncoding("utf-8");
            // 下载文件能正常显示中文
            response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
            // 实现文件下载
            byte[] buffer = new byte[1024];
            FileInputStream fis = null;
            BufferedInputStream bis = null;
            try {
                fis = new FileInputStream(file);
                bis = new BufferedInputStream(fis);
                OutputStream os = response.getOutputStream();
                int i = bis.read(buffer);
                while (i != -1) {
                    os.write(buffer, 0, i);
                    i = bis.read(buffer);
                }
                System.out.println("Download  successfully!");
            } catch (Exception e) {
                System.out.println("Download  failed!");
            } finally {
                if (bis != null) {
                    try {
                        bis.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
                if (fis != null) {
                    try {
                        fis.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }

会出现以下错误

解决办法，在pom中增加

			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<version>2.6</version>
				<artifactId>maven-resources-plugin</artifactId>
				<configuration>
					<encoding>UTF-8</encoding>
					<nonFilteredFileExtensions>
						<nonFilteredFileExtension>xlsx</nonFilteredFileExtension>
					</nonFilteredFileExtensions>
				</configuration>
			</plugin>

clean 重启即可。