import org.springframework.http.ResponseEntity;
     import org.springframework.http.HttpHeaders;
     import org.springframework.http.HttpStatus;
     import org.springframework.http.MediaType;
     import javax.servlet.http.HttpServletRequest;
     import javax.servlet.http.HttpServletResponse;
     import org.apache.commons.io.FileUtils;

     @RequestMapping(value = "/downLoadmoban",method = RequestMethod.GET)
          public ResponseEntity<byte[]> downLoadmoban(HttpServletRequest request, HttpServletResponse response) throws IOException{
                        String rootpath = request.getSession().getServletContext().getRealPath("/muban");//获取项目中的模板文件夹
                        File file=new File(rootpath + File.separator + "ceshi.xls");  
                        HttpHeaders headers = new HttpHeaders();   
                        String fileName=new String("测试统计表导入模板.xls".getBytes("gb2312"),"iso-8859-1");//为了解决中文名称乱码问题  
                        headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);  
                        headers.set(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + fileName + "\"");  
                        return new ResponseEntity<byte[]>(FileUtils.readFileToByteArray(file),   
                                        headers, HttpStatus.OK);   
          }
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作者：小志的博客
原文：https://blog.csdn.net/li1325169021/article/details/85336606
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