一，用框架生成增删改查模块 

二，在实体类entity 需要导入导出的字段上加上注解@Excel

三，在controller类上继承jeecgboot通用controller     

JeecgController

并且在JeecgController里增加导出模板的方法

/*** 导出excel空模板** @param request*/protected ModelAndView exportTemplateXls(HttpServletRequest request, T object, Class<T> clazz, String title) {// Step.1 组装查询条件LoginUser sysUser = (LoginUser) SecurityUtils.getSubject().getPrincipal();// Step.2 获取空模板List<T> exportList = new ArrayList<T>();// Step.3 AutoPoi 导出ExcelModelAndView mv = new ModelAndView(new JeecgEntityExcelView());//此处设置的filename无效 ,前端会重更新设置一下mv.addObject(NormalExcelConstants.FILE_NAME, title);mv.addObject(NormalExcelConstants.CLASS, clazz);//update-begin--Author:liusq  Date:20210126 for：图片导出报错，ImageBasePath未设置--------------------ExportParams exportParams=new ExportParams(title + "电价配置导入模板表", "导出人:" + sysUser.getRealname(), title);exportParams.setImageBasePath(jeecgBaseConfig.getPath().getUpload());//update-end--Author:liusq  Date:20210126 for：图片导出报错，ImageBasePath未设置----------------------mv.addObject(NormalExcelConstants.PARAMS,exportParams);mv.addObject(NormalExcelConstants.DATA_LIST, exportList);return mv;}

四，在Controller实现导入导出的接口  把POJO替换成加了@Excel的entity实体类

/*** 导出excel** @param request* @param */@RequestMapping(value = "/exportXls")@ApiOperation("导出excel")public ModelAndView exportXls(HttpServletRequest request, POJO pojo) {return super.exportXls(request, POJO , POJO.class, "表的名字");}/*** 导出excel模板** @param request* @param tbElectrovalence*/@RequestMapping(value = "/exportTemplateXls")@ApiOperation("导出excel模板")public ModelAndView exportTemplateXls(HttpServletRequest request, POJO pojo) {return super.exportTemplateXls(request, POJO , POJO.class, "表的名字");}/*** 通过excel导入数据** @param request* @param response* @return*/@RequestMapping(value = "/importExcel", method = RequestMethod.POST)@ApiOperation("通过excel导入数据")public Result<?> importExcel(HttpServletRequest request, HttpServletResponse response) {return super.importExcel(request, response, POJO.class);}

五，测试导入导出成功