php,lumen,laravel5
后端开发-php教程
通过以下命令刚安装的Lumen：灰鸽子源码分析,vscode可以编辑文本吗,ubuntu 工作区切换,tomcat 吞吐量,sqlite 事物,麦当劳网页设计,wdcp ftp配置文件 数据库,可能数据库密码不对或数据库服务器出错,添加统计代码插件,php 前端 框架,汇编编写爬虫,php初级,商城seo优化,springboot异步模式,dedecms 标签使用规则,贷款织梦网站模板,网页 日历 日程 asp,具有原型图模板的工具,网站后台要求,php 一键生成静态页面,网格管理系统 源码,微赞小程序模块如何安装lzw
composer create-project laravel/lumen --prefer-dist做了以下修改：
1、修改 .env 文件
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APP_KEY=iMXwF1A6Vdbg5V8bYzuNbqv0HX6nH9CdSESSION_DRIVER=file2、修改 bootstrap/app.php 文件，取消以下代码的注释屏蔽：
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Dotenv::load(__DIR__.'/../');$app->withFacades();$app->withEloquent(); $app->middleware([ // Illuminate\Cookie\Middleware\EncryptCookies::class, // Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class, Illuminate\Session\Middleware\StartSession::class, // Illuminate\View\Middleware\ShareErrorsFromSession::class, // Laravel\Lumen\Http\Middleware\VerifyCsrfToken::class, ]);出现以下错误提示：
Whoops, looks like something went wrong.1/1ErrorException in StartSession.php line 171:Argument 1 passed to Illuminate\Session\Middleware\StartSession::addCookieToResponse() must be an instance of Symfony\Component\HttpFoundation\Response, string given, called in F:\upupw\vhosts\lumen\vendor\illuminate\session\Middleware\StartSession.php on line 71 and definedin StartSession.php line 171at Application->Laravel\Lumen\{closure}('4096', 'Argument 1 passed to Illuminate\Session\Middleware\StartSession::addCookieToResponse() must be an instance of Symfony\Component\HttpFoundation\Response, string given, called in F:\upupw\vhosts\lumen\vendor\illuminate\session\Middleware\StartSession.php on line 71 and defined', 'F:\upupw\vhosts\lumen\vendor\illuminate\session\Middleware\StartSession.php', '171', array()) in StartSession.php line 171at StartSession->addCookieToResponse(' Lumen body { margin: 0; padding: 0; width: 100%; height: 100%; color: #B0BEC5; display: table; font-weight: 100; font-family: 'Lato'; } .container { text-align: center; display: table-cell; vertical-align: middle; } .content { text-align: center; display: inline-block; } .title { font-size: 96px; margin-bottom: 40px; } .quote { font-size: 24px; } Lumen. ', object(Store)) in StartSession.php line 71at StartSession->handle(object(Request), object(Closure))at call_user_func_array(array(object(StartSession), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124at Pipeline->Illuminate\Pipeline\{closure}(object(Request))at call_user_func(object(Closure), object(Request)) in Pipeline.php line 103at Pipeline->then(object(Closure)) in Application.php line 1354at Application->sendThroughPipeline(array('Illuminate\Session\Middleware\StartSession'), object(Closure)) in Application.php line 1135at Application->dispatch(null) in Application.php line 1073at Application->run() in index.php line 28然后找到vendor/illuminate/session/Middleware/StartSession.php文件，添加了调试信息：
修改 handle() 方法如下：
public function handle(Request $request, Closure $next) { $this->sessionHandled = true; // If a session driver has been configured, we will need to start the session here // so that the data is ready for an application. Note that the Laravel sessions // do not make use of PHP "native" sessions in any way since they are crappy. if ($this->sessionConfigured()) { $session = $this->startSession($request); $request->setSession($session); } $response = $next($request); echo gettype($response) . '
'; // Again, if the session has been configured we will need to close out the session // so that the attributes may be persisted to some storage medium. We will also // add the session identifier cookie to the application response headers now. if ($this->sessionConfigured()) { $this->storeCurrentUrl($request, $session); $this->collectGarbage($session); echo gettype($response) . '
'; $this->addCookieToResponse($response, $session); } return $response; }输出显示：
stringstring错误信息说 addCookieToResponse 方法第一个参数 需要 Response实例，而的到是却是String，不知如何解决@@
回复内容：
通过以下命令刚安装的Lumen：
composer create-project laravel/lumen --prefer-dist做了以下修改：
1、修改 .env 文件
APP_KEY=iMXwF1A6Vdbg5V8bYzuNbqv0HX6nH9CdSESSION_DRIVER=file2、修改 bootstrap/app.php 文件，取消以下代码的注释屏蔽：
Dotenv::load(__DIR__.'/../');$app->withFacades();$app->withEloquent(); $app->middleware([ // Illuminate\Cookie\Middleware\EncryptCookies::class, // Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class, Illuminate\Session\Middleware\StartSession::class, // Illuminate\View\Middleware\ShareErrorsFromSession::class, // Laravel\Lumen\Http\Middleware\VerifyCsrfToken::class, ]);出现以下错误提示：
Whoops, looks like something went wrong.1/1ErrorException in StartSession.php line 171:Argument 1 passed to Illuminate\Session\Middleware\StartSession::addCookieToResponse() must be an instance of Symfony\Component\HttpFoundation\Response, string given, called in F:\upupw\vhosts\lumen\vendor\illuminate\session\Middleware\StartSession.php on line 71 and definedin StartSession.php line 171at Application->Laravel\Lumen\{closure}('4096', 'Argument 1 passed to Illuminate\Session\Middleware\StartSession::addCookieToResponse() must be an instance of Symfony\Component\HttpFoundation\Response, string given, called in F:\upupw\vhosts\lumen\vendor\illuminate\session\Middleware\StartSession.php on line 71 and defined', 'F:\upupw\vhosts\lumen\vendor\illuminate\session\Middleware\StartSession.php', '171', array()) in StartSession.php line 171at StartSession->addCookieToResponse(' Lumen body { margin: 0; padding: 0; width: 100%; height: 100%; color: #B0BEC5; display: table; font-weight: 100; font-family: 'Lato'; } .container { text-align: center; display: table-cell; vertical-align: middle; } .content { text-align: center; display: inline-block; } .title { font-size: 96px; margin-bottom: 40px; } .quote { font-size: 24px; } Lumen. ', object(Store)) in StartSession.php line 71at StartSession->handle(object(Request), object(Closure))at call_user_func_array(array(object(StartSession), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124at Pipeline->Illuminate\Pipeline\{closure}(object(Request))at call_user_func(object(Closure), object(Request)) in Pipeline.php line 103at Pipeline->then(object(Closure)) in Application.php line 1354at Application->sendThroughPipeline(array('Illuminate\Session\Middleware\StartSession'), object(Closure)) in Application.php line 1135at Application->dispatch(null) in Application.php line 1073at Application->run() in index.php line 28然后找到vendor/illuminate/session/Middleware/StartSession.php文件，添加了调试信息：
修改 handle() 方法如下：
public function handle(Request $request, Closure $next) { $this->sessionHandled = true; // If a session driver has been configured, we will need to start the session here // so that the data is ready for an application. Note that the Laravel sessions // do not make use of PHP "native" sessions in any way since they are crappy. if ($this->sessionConfigured()) { $session = $this->startSession($request); $request->setSession($session); } $response = $next($request); echo gettype($response) . '
'; // Again, if the session has been configured we will need to close out the session // so that the attributes may be persisted to some storage medium. We will also // add the session identifier cookie to the application response headers now. if ($this->sessionConfigured()) { $this->storeCurrentUrl($request, $session); $this->collectGarbage($session); echo gettype($response) . '
'; $this->addCookieToResponse($response, $session); } return $response; }输出显示：
stringstring错误信息说 addCookieToResponse 方法第一个参数 需要 Response实例，而的到是却是String，不知如何解决@@
抱歉，刚刚下班回来才看到。
如果直接在路由的回调中返回的确实是 String，如果是在控制器中调用，框架会帮忙把 String 转为 Response 对象。
当然，在路由回调中我们直接也可以转一下。prepareResponse方法参见类 Laravel\Lumen\Application：
php$app->get('/', function() use ($app) { return $app->prepareResponse($app->welcome());});
@Mr_Jing（Lumen 初体验 文章作者）可以麻烦解答下吗？