Laravel版本升级的坑

从5.2升到5.3，在composer.json文件直接修改版本号"name": "laravel/laravel",
"description": "The Laravel Framework.",
"keywords": ["framework", "laravel"],
"license": "MIT",
"type": "project",
"require": {
"php": ">=5.5.9",
"laravel/framework": "5.3.*",
"predis/predis": "^1.1",
"guzzlehttp/guzzle": "^6.3"
},
然后在bootstrap/autoload.php中加入
$compiledPath = __DIR__.'/cache/compiled.php';
if (file_exists($compiledPath)) {
require $compiledPath;
}
修改完后更新composer

composer update

此时，报错了

[ErrorException]                                                                                   Declaration of App\Providers\EventServiceProvider::boot(Illuminate\Contracts\Events\Dispatcher     $events) should be compatible with Illuminate\Foundation\Support\Providers\EventServiceProvider    ::boot() 

这是因为EventServiceProvider::boot() 的参数与其重写的boot()参数不一致，只需把App\Providers\EventServiceProvider::boot的参数删除或注释掉

public function boot(/*DispatcherContract $events*/)    {        parent::boot(/*$events*/);        //    }

这个改完后再update还会报一个异常

[ErrorException]                                                                                   Declaration of App\Providers\RouteServiceProvider::boot(Illuminate\Routing\Router $router) shou    ld be compatible with Illuminate\Foundation\Support\Providers\RouteServiceProvider::boot()  

解决办法一样的。
当修改完这两个方法再update就OK了。