YII2框架中手动配置插件(不使用composer自动配置)

下面以phpoffice的phpspreadsheet为例，phpspreadsheet是可以操作Excel的类库，

使用composer下载phpspreadsheet

composer require phpoffice/phpspreadsheet

把相关文件夹放到Yii2的vendor目录里面



配置vendor下的composer的autoload_psr4.php，由于依赖Psr的SimpleCache，所以这里需要新增两项

<?php

// autoload_psr4.php @generated by Composer

$vendorDir = dirname(dirname(__FILE__));
$baseDir = dirname($vendorDir);

return array(
'yii\\swiftmailer\\' => array($vendorDir . '/yiisoft/yii2-swiftmailer'),
'yii\\gii\\' => array($vendorDir . '/yiisoft/yii2-gii'),
'yii\\faker\\' => array($vendorDir . '/yiisoft/yii2-faker'),
'yii\\debug\\' => array($vendorDir . '/yiisoft/yii2-debug'),
'yii\\composer\\' => array($vendorDir . '/yiisoft/yii2-composer'),
'yii\\codeception\\' => array($vendorDir . '/yiisoft/yii2-codeception'),
'yii\\bootstrap\\' => array($vendorDir . '/yiisoft/yii2-bootstrap'),
'yii\\' => array($vendorDir . '/yiisoft/yii2'),
'cebe\\markdown\\' => array($vendorDir . '/cebe/markdown'),
'Faker\\' => array($vendorDir . '/fzaninotto/faker/src/Faker'),
//////////////新增项
'Psr\\SimpleCache\\' => array($vendorDir . '/psr/simple-cache'),
'PhpOffice\\PhpSpreadsheet\\' => array($vendorDir . '/phpoffice/PhpSpreadsheet'),
);

在控制器中使用

use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Writer\Xlsx;

public function actionIndex()
{
$spreadsheet = new Spreadsheet();
$sheet = $spreadsheet->getActiveSheet();
$sheet->setCellValue('A1', 'Hello World !');
$writer = new Xlsx($spreadsheet);
$writer->save('hello world.xlsx');
}