Php 如何在yii2中重写url

我已经在我的系统上安装了yii2。默认url是

localhost/projectname/backend/web/

我希望我的url应该是

http://localhost/projectname

用于前端和

http://localhost/projectname/admin

用于后端。我遵循的第二个答案，即由despotbg给出的这个链接，但我得到以下错误

无效调用–yii\base\InvalidCallException设置只读属性：yii\web\Application:：request

---

请建议我如何删除此错误，以便重写我的项目url。我正在wamp服务器上工作

backend\config\main.php

// backend, under components array
         'request'=>[
             'class' => 'common\components\Request',
             'web'=> '/backend/web',
             'adminUrl' => '/admin'
         ],
         'urlManager' => [
                 'enablePrettyUrl' => true,
                 'showScriptName' => false,
         ],

在common\components上创建request.php文件

<?php

namespace common\components;


class Request extends \yii\web\Request {
    public $web;
    public $adminUrl;

    public function getBaseUrl(){
        return str_replace($this->web, "", parent::getBaseUrl()) . $this->adminUrl;
    }


    /*
        If you don't have this function, the admin site will 404 if you leave off 
        the trailing slash.

        E.g.:

        Wouldn't work:
        site.com/admin

        Would work:
        site.com/admin/

        Using this function, both will work.
    */
    public function resolvePathInfo(){
        if($this->getUrl() === $this->adminUrl){
            return "";
        }else{
            return parent::resolvePathInfo();
        }
    }
}

---

答案已更新，现在可以正常工作了

前端

修改文件frontend/config/main.php：

....
    'components' => [
        ....
        'request'=>[
            'baseUrl'=>'/projectname',
        ],
        'urlManager'=>[
            'scriptUrl'=>'/projectname/index.php',
        ],
        // use the following, if you want to enable speaking URL for the frontend
//        'urlManager' => [
//            'enablePrettyUrl' => true,
//            'showScriptName' => false,
//        ],
    ],

....
    'components' => [
        ....
        'request'=>[
            'baseUrl'=>'/projectname/admin',
        ],
        'urlManager'=>[
            'scriptUrl'=>'/projectname/admin/index.php',
        ],
        // use the following, if you want to enable speaking URL for the backend
//        'urlManager' => [
//            'enablePrettyUrl' => true,
//            'showScriptName' => false,
//        ],
    ],

后端

修改backend/config/main.php文件：

....
    'components' => [
        ....
        'request'=>[
            'baseUrl'=>'/projectname',
        ],
        'urlManager'=>[
            'scriptUrl'=>'/projectname/index.php',
        ],
        // use the following, if you want to enable speaking URL for the frontend
//        'urlManager' => [
//            'enablePrettyUrl' => true,
//            'showScriptName' => false,
//        ],
    ],

....
    'components' => [
        ....
        'request'=>[
            'baseUrl'=>'/projectname/admin',
        ],
        'urlManager'=>[
            'scriptUrl'=>'/projectname/admin/index.php',
        ],
        // use the following, if you want to enable speaking URL for the backend
//        'urlManager' => [
//            'enablePrettyUrl' => true,
//            'showScriptName' => false,
//        ],
    ],

Apache（.htaccess和mod_重写）

在项目根目录中创建文件.htaccess（其中composer.json为）：

这很可能与yii无关，而是与虚拟主机设置有关。我会在wamp问题页面上问这个问题。我清理了你的语法（包装你的示例URL让其他人知道它不是链接），但是你可能想发布更多的代码细节，以便其他读者可以帮助你。根据您的问题和其他评论，我还将此标记为wamp。