SpringBoot+ EasyExcel实现Excel文件的导入导出

SpringBoot+ EasyExcel实现Excel文件的导入导出

##1.引入相关依赖

 <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>easyexcel</artifactId>
            <version>2.2.10</version>
        </dependency>

2.controller

 @GetMapping("/excel")
    public void  export(HttpServletResponse response,QueryRequest request, Certificate certificate)   {
        response.setContentType("application/vnd.ms-excel"); 
        response.setCharacterEncoding("utf-8");
        String fileName = null;
        try {
            fileName = URLEncoder.encode(UUID.randomUUID().toString(), "UTF-8");
            response.setHeader("Content-disposition", "attachment;filename=" + fileName + ".xlsx");
            
            IPage<List<Certificate>> certificate1 = this.certificateService.findCertificate(request, certificate);
            List<List<Certificate>> records = certificate1.getRecords();//查出来的list 对象


            EasyExcel.write(response.getOutputStream(), Certificate.class).autoCloseStream(Boolean.FALSE).sheet("模板").doWrite(records);
        } catch (Exception e) {
            response.reset();
            response.setContentType("application/json");
            response.setCharacterEncoding("utf-8");
            Map<String, String> map = new HashMap<String, String>();
            map.put("status", "failure");
            map.put("message", "下载文件失败" + e.getMessage());
            try {
                response.getWriter().println(JSON.toJSONString(map));
            } catch (IOException ioException) {
                ioException.printStackTrace();
            }
            e.printStackTrace();
            log.error("下载失败"+e);
        }
    }
```就ok了