SpringBoot项目resources文件下载无法正常使用

在maven中默认只能读取resources文件夹下的资源，即使在resources下的其他文件夹内的资源,也不可以正常下载使用，这时候可以在pom文件中添加maven-resources-plugin这个插件

            
                org.apache.maven.plugins
                maven-resources-plugin
                
                    UTF-8
                    
                        xlsx
                    
                
            

文件下载接口正常写即可

@ApiOperation(value = "导入模板下载", notes = "导入模板下载")
    @ApiImplicitParam(name = "fileName", value = "文件名称", dataType = "string", paramType = "path")
    @GetMapping("/getTemplateFile/{fileName}")
    public void getTemplateFile(@PathVariable(value = "fileName") String fileName, HttpServletResponse response, HttpServletRequest request) throws IOException {
        fileName = fileName + ".xlsx";
        String path = "templateFile" + File.separator + fileName ;
        byte[] data = FileUtil.readBytes(path);

        response.reset();

        String userAgent = request.getHeader("User-Agent");
        if (userAgent.contains("MSIE") || userAgent.contains("Trident")) {
            fileName = URLEncoder.encode(fileName, "UTF-8");
        } else {
            fileName = new String(fileName.getBytes("UTF-8"), "ISO-8859-1");
        }

        response.setHeader(HttpHeaders.CONTENT_DISPOSITION, String.format("attachment; filename=%s", fileName));
        response.addHeader(HttpHeaders.CONTENT_LENGTH, String.valueOf(data.length));
        response.setContentType("application/octet-stream; charset=UTF-8");
        ServletOutputStream outputStream = response.getOutputStream();
        IoUtil.write(outputStream, Boolean.TRUE, data);
    }