多sheet页导出
核心代码就是下图里面的,使用EasyExcel.writeSheet创建一个sheet,然后用excelWriter写入就行了,很简单
java
@GetMapping("downloadMultiSheet")
public void downloadMultiSheet(HttpServletResponse response) throws IOException {
// 导出excel如果失败会返回json
try {
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
response.setCharacterEncoding("utf-8");
// 这里URLEncoder.encode可以防止中文乱码 当然和easyexcel没有关系
String fileName = URLEncoder.encode("测试", "UTF-8").replaceAll("\\+", "%20");
response.setHeader("Content-disposition", "attachment;filename*=" + fileName + ".xlsx");
ExcelWriter excelWriter = EasyExcel.write(response.getOutputStream()).build();
// 每次都要创建writeSheet 这里注意必须指定sheetNo 而且sheetName必须不一样。
// sheetNo从0开始
WriteSheet writeSheet = EasyExcel.writerSheet(0, "用户").head(User.class).build();
// 去数据库查找数据
List<User> users = userService.list();
excelWriter.write(users, writeSheet);
writeSheet = EasyExcel.writerSheet(1, "部门").head(Department.class).build();
// 去数据库查找数据
List<Department> departments = departmentService.list();
excelWriter.write(departments, writeSheet);
// 写完要关闭,否则缓冲区数据会丢失
excelWriter.close();
} catch (Exception e) {
// 重置response
response.reset();
response.setContentType("application/json");
response.setCharacterEncoding("utf-8");
Map<String, String> map = MapUtils.newHashMap();
map.put("status", "failure");
map.put("message", "下载文件失败" + e.getMessage());
response.getWriter().println(JSON.toJSONString(map));
}
}
多sheet导入
核心代码如图所示,使用EasyExcel.readSheet读取不同的sheet
java
@PostMapping("uploadMultiSheet")
public Result uploadMultiSheet(@RequestPart MultipartFile file) throws IOException {
try (ExcelReader excelReader = EasyExcel.read(file.getInputStream()).build()) {
// 这里为了简单 所以注册了 同样的head 和Listener 自己使用功能必须不同的Listener
// sheetNo从0开始
ReadSheet readSheet1 =
EasyExcel.readSheet(0).head(User.class).registerReadListener(new PageReadListener<User>(users -> {
userService.saveBatch(users);
})).build();
ReadSheet readSheet2 =
EasyExcel.readSheet(1).head(Department.class).registerReadListener(new PageReadListener<Department>(departments -> {
departmentService.saveBatch(departments);
})).build();
// 这里注意 一定要把sheet1 sheet2 一起传进去,不然有个问题就是03版的excel 会读取多次,浪费性能
excelReader.read(readSheet1, readSheet2);
}
return resultOk();
}