封装excel导出方法

封装读取excel内容方法

    /**
     * 获取Excel内容
     * @param type $filename
     * @return type
     */
    public function getExcelContent($filename) {
        //读取内容
        $objPHPExcel = \PHPExcel_IOFactory::load($filename);
        $objPHPExcel->setActiveSheetIndex(0);
        $sheet1 = $objPHPExcel->getSheet(0);
        //获取行数，并把数据读取出来$data数组
        $rowCount = $sheet1->getHighestRow(); //excel行数
        $data = array();
        $this->column = 100; //最大列数
        for ($i = 1; $i <= $rowCount; $i++) {
            for ($j = 0; $j < $this->column; $j++) {
                $value = (string)$sheet1->getCellByColumnAndRow($j, $i)->getValue();
                if ($i == 1 && empty($value)) {
                    $this->column = $j; //当第一列遇到空的时候替换最大列数
                } else {
                    $data[$i - 1][$j] = $value; //获取每一列的值
                }
            }
        }
        return $data;
    }

封装excel导出方法

<?php

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

namespace app\common\model;

use think\Model;
use think\Db;

/**
 * Description of OrderSourceController
 *
 * @author zhangjx <zhangjx882@sina.com>
 * @date 2017-9-8
 */
class Excel extends Model {
    /**
     * Excel列数getExcelContent()专用
     */
    protected $column;

    private function checkExcel($fileName, $fileAddress, $loadFileAddress){
        if (empty($fileName))
            return false;
        set_time_limit(0);
        ini_set('memory_limit', '512M');
        // 检测文件夹如果不存在就生成
        Directory($fileAddress);
        vendor('excel.PHPExcel');
//        $cacheMethod = \PHPExcel_CachedObjectStorageFactory::cache_in_memory;
//        $cacheSettings = array('memoryCacheSize'=>'50MB');
//        \PHPExcel_Settings::setCacheStorageMethod($cacheMethod, $cacheSettings);
        if ($loadFileAddress == null) {
            $objPHPExcel = new \PHPExcel();
        } else {
            $objReader = \PHPExcel_IOFactory::createReader("Excel2007");
            $objReader->setIncludeCharts(TRUE);
            $objPHPExcel = $objReader->load($loadFileAddress);
        }

        return $objPHPExcel;
    }

    /**
     * 导出excel 公共方法 若表头一致可采用
     * @param array $xlsCellName        excel表列名
     * @param array $xlsCellValue       excel表列值
     * @param string $fileName          文件名称
     * @param string $fileAddress       文件保存地址
     * @param integer $beginNum         开始写数据的行数
     * @param null $loadFileAddress     是否读取其他文件作为模板配置
     * @return string
     */

    public function exportExcel($xlsCellName, $xlsCellValue, $fileName, $fileAddress, $beginNum = 1, $loadFileAddress = null) {
        $objPHPExcel = $this->checkExcel($fileName, $fileAddress, $loadFileAddress);

        // 合并数据
        $xlsData = array_merge(array($xlsCellName), $xlsCellValue);

        foreach ($xlsData as $num => $data) {
            $row = $num + $beginNum;
            $chr = 0;
            foreach ($data as $val) {
                $col = self::IntToChr($chr);
                $chr++;
                $objPHPExcel->getActiveSheet(0)->setCellValue($col . $row, $val);
            }
        }

        header('pragma:public');
        header('Content-type:application/vnd.ms-excel;charset=utf-8;name="' . $fileName . '.xls"');
        header("Content-Disposition:attachment;filename=$fileName.xls"); //attachment新窗口打印inline本窗口打印
        $objWriter = \PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
//        $objWriter->save('php://output');
        $objWriter->save($fileAddress . $fileName . '.xls');
        return $_SERVER['REQUEST_SCHEME'] . "://" . $_SERVER['HTTP_HOST'] . ltrim($fileAddress, '.') . $fileName . '.xls'; //增加后缀
    }

    /**
     * 数字转字母 （类似于Excel列标）
     * @param integer $index 索引值
     * @param integer $start 字母起始值
     * @return String 返回字母
     */
    public static function IntToChr($index, $start = 65) {
        $str = '';
        if (floor($index / 26) > 0) {
            $str .= self::IntToChr(floor($index / 26) - 1);
        }
        return $str . chr($index % 26 + $start);
    }

实际业务中，会有多处列表需要用到导出和导入功能，如果不是特殊表头情况下可以考虑采用统一的方法，需要使用的地方直接调用

这样可以节省很多代码，而且使用起来会很方便