利用phpExcel实现Excel数据的导入导出

/** PHPExcel root directory */
if （!defined（‘PHPEXCEL_ROOT‘）） {
    define（‘PHPEXCEL_ROOT‘ dirname（__FILE__） . ‘/‘）;
    require（PHPEXCEL_ROOT . ‘PHPExcel/Autoloader.php‘）;
}

/**
 * PHPExcel
 *
 * Copyright （c） 2006 - 2015 PHPExcel
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License or （at your option） any later version.
 *
 * This library is distributed in the hope that it will be useful
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy o

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2017-12-25 02:39  PHPExcel-1.8\
     文件          70  2017-12-25 02:39  PHPExcel-1.8\.gitattributes
     文件         108  2017-12-25 02:39  PHPExcel-1.8\.gitignore
     文件         512  2017-12-25 02:39  PHPExcel-1.8\.travis.yml
     目录           0  2017-12-25 02:39  PHPExcel-1.8\Classes\
     文件       31533  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel.php
     目录           0  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\
     文件        2884  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\Autoloader.php
     目录           0  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\CachedobjectStorage\
     文件        9548  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\CachedobjectStorage\APC.php
     文件       10594  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\CachedobjectStorage\Cachebase.php
     文件        6776  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\CachedobjectStorage\DiscISAM.php
     文件        3484  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\CachedobjectStorage\ICache.php
     文件        4862  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\CachedobjectStorage\Igbinary.php
     文件       10709  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\CachedobjectStorage\Memcache.php
     文件        3800  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\CachedobjectStorage\Memory.php
     文件        4333  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\CachedobjectStorage\MemoryGZip.php
     文件        4319  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\CachedobjectStorage\MemorySerialized.php
     文件        6451  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\CachedobjectStorage\PHPTemp.php
     文件       10363  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\CachedobjectStorage\SQLite.php
     文件       11230  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\CachedobjectStorage\SQLite3.php
     文件        9945  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\CachedobjectStorage\Wincache.php
     文件        7888  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\CachedobjectStorageFactory.php
     目录           0  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\CalcEngine\
     文件        2297  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\CalcEngine\CyclicReferenceStack.php
     文件        4173  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\CalcEngine\Logger.php
     文件      202013  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\Calculation.php
     目录           0  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\Calculation\
     文件       33331  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\Calculation\Database.php
     文件       69069  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\Calculation\DateTime.php
     文件      110732  2017-12-25 02:39  PHPExcel-1.8\Classes\PHPExcel\Calculation\Engineering.php
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