简要前端：<div><div id="title">社团活动报名系统</div><div><form action="{:url('index/baoming')}" METHOD="post"  ACCEPT-CHARSET="utf-8"><table  width="20%" border="0" cellpadding="0" cellspacing="2" align='center' valign='middle'><tr><td>姓名:</td><td><input type="text"  name="username"></td></tr><tr><td>手机号:</td><td><input type="text"  name="tel"></td></tr><tr><td>邮箱:</td><td><input type="text"  name="email"></td></tr><tr><td>专业:</td><td><input type="text"  name="subject"></td></tr><tr><td>学号:</td><td><input type="text"  name="studentid"></td></tr><tr><td height="26" colspan="2" align="center" valign="middle"><input type="submit" name="tijiao" value="报名" style="width:60px; height:30px" ></td></tr></table></form><div id="excel"><a style="text-decoration:none"  href="{:url('excel')}" class="btn btn-info radius" id="daochu"><i class="fa fa-search"></i>导出数据</a></div></div>
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    public function baoming(){$request=request();$username = $request->param('username');$tel = $request->param('tel');$email = $request->param('email');$subject = $request->param('subject');$studentid = $request->param('studentid');$data =['username'=>$username,'tel'=>$tel,'email'=>$email,'subject'=>$subject,'studentid'=>$studentid];$a = Db::table('user')->insert($data);$b = Db::table('user')->getLastInsID();if($a){$this->success('报名成功,您的识别码为：0000'.$b);}else{echo '输入信息有误';}}

public function excel(){//导出//##########################################################################$list = Db::name("user")->select();$file_name = date('Y-m-d_His').'.xls';$path = dirname(__FILE__);Loader::import('PHPExcel.Classes.PHPExcel');Loader::import('PHPExcel.Classes.PHPExcel.IOFactory.PHPExcel_IOFactory');$PHPExcel = new \PHPExcel();// print_r($PHPExcel);die;$PHPSheet = $PHPExcel->getActiveSheet();$PHPSheet->setTitle("报名信息");$PHPSheet->setCellValue("A1","ID");$PHPSheet->setCellValue("B1","姓名");$PHPSheet->setCellValue("C1","手机号");$PHPSheet->setCellValue("D1","邮箱");$PHPSheet->setCellValue("E1","专业");$PHPSheet->setCellValue("F1","学号");$i = 2;foreach($list as $key => $value){$PHPSheet->setCellValue('A'.$i,''.$value['Id']);$PHPSheet->setCellValue('B'.$i,''.$value['username']);$PHPSheet->setCellValue('C'.$i,''.$value['tel']);$PHPSheet->setCellValue('D'.$i,''.$value['email']);$PHPSheet->setCellValue('E'.$i,''.$value['subject']);$PHPSheet->setCellValue('F'.$i,''.$value['studentid']);$i++;}$PHPWriter = \PHPExcel_IOFactory::createWriter($PHPExcel,"Excel2007");header('Content-Disposition: attachment;filename='.$file_name);header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');$PHPWriter->save("php://output");}