又有一段時間沒有學習了!迷茫，除了迷茫還是在迷茫！最近，公司接了一個laravel的專案，可惜沒有phper，於是開始學習laravel，現在的情況就是還沒學會走路就要開始跑了，所以遇到坑會摔得很痛！
安裝出現的問題
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安裝步驟(5.3.*)
composer global require "laravel/installer" composer create-project --prefer-dist laravel/laravel blog "5.3.*" -
出現的問題
①無法安裝composer依賴
報錯: php.ini 缺少mbstring
laravel/framework v5.4.9 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.解決: 放開註釋extension=php_mbstring.dll
②php artisan ser能執行但頁面報錯
報錯: The only supported ciphers are AES-128-CBC and AES-256-CBC
解決: 先執行這個命令
php artisan key:generate再執行
php artisan config:clear③同事安裝php出現的問題:php.ini啟用openssl時報錯openssl.dll找不到
錯誤顯示他的配置預設去C:/php/ext/下去找openssl.dll檔案
解決: 他開的是虛擬機器，修改extension_dir = “./” 路徑為絕對路徑④本地執行時post請求報錯
報錯:
TokenMismatchException in VerifyCsrfToken.php line 68: in VerifyCsrfToken.php line 68 at VerifyCsrfToken->handle(object(Request), object(Closure)) in Pipeline.php line 137 at Pipeline->IlluminatePipeline{closure}(object(Request)) in Pipeline.php line 33 at Pipeline->IlluminateRouting{closure}(object(Request)) in ShareErrorsFromSession.php line 49 at ShareErrorsFromSession->handle(object(Request), object(Closure)) in Pipeline.php line 137 at Pipeline->IlluminatePipeline{closure}(object(Request)) in Pipeline.php line 33 at Pipeline->IlluminateRouting{closure}(object(Request)) in StartSession.php line 64 at StartSession->handle(object(Request), object(Closure)) in Pipeline.php line 137 at Pipeline->IlluminatePipeline{closure}(object(Request)) in Pipeline.php line 33 at Pipeline->IlluminateRouting{closure}(object(Request)) in AddQueuedCookiesToResponse.php line 37 at AddQueuedCookiesToResponse->handle(object(Request), object(Closure)) in Pipeline.php line 137 at Pipeline->IlluminatePipeline{closure}(object(Request)) in Pipeline.php line 33 at Pipeline->IlluminateRouting{closure}(object(Request)) in EncryptCookies.php line 59 at EncryptCookies->handle(object(Request), object(Closure)) in Pipeline.php line 137 at Pipeline->IlluminatePipeline{closure}(object(Request)) in Pipeline.php line 33 at Pipeline->IlluminateRouting{closure}(object(Request)) in Pipeline.php line 104 at Pipeline->then(object(Closure)) in Router.php line 655 at Router->runRouteWithinStack(object(Route), object(Request)) in Router.php line 629 at Router->dispatchToRoute(object(Request)) in Router.php line 607 at Router->dispatch(object(Request)) in Kernel.php line 268 at Kernel->IlluminateFoundationHttp{closure}(object(Request)) in Pipeline.php line 53 at Pipeline->IlluminateRouting{closure}(object(Request)) in EnableCrossRequestMiddleware.php line 19 at EnableCrossRequestMiddleware->handle(object(Request), object(Closure)) in Pipeline.php line 137 at Pipeline->IlluminatePipeline{closure}(object(Request)) in Pipeline.php line 33 at Pipeline->IlluminateRouting{closure}(object(Request)) in CheckForMaintenanceMode.php line 46 at CheckForMaintenanceMode->handle(object(Request), object(Closure)) in Pipeline.php line 137 at Pipeline->IlluminatePipeline{closure}(object(Request)) in Pipeline.php line 33 at Pipeline->IlluminateRouting{closure}(object(Request)) in Pipeline.php line 104 at Pipeline->then(object(Closure)) in Kernel.php line 150 at Kernel->sendRequestThroughRouter(object(Request)) in Kernel.php line 117 at Kernel->handle(object(Request)) in index.php line 54 at require_once(`E:phpStudyWWWmylaravellogpublicindex.php`) in server.php line 21原因：laravel為了防止跨站指令碼攻擊(CSRF),會自動為每個活躍使用者的會話生成一個 CSRF「令牌」。該令牌用於驗證經過身份驗證的使用者是否是嚮應用程式發出請求的使用者。
解決：在app/Http/Middleware/VerifyCsrfToken中放行需要訪問的地址。如protected $except = [ // /*, /wechat, ];⑤遇到跨域問題(laravel跨域))
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執行命令
php artisan make:middleware EnableCrossRequestMiddleware自動在app/Http/Middleware下生成一個EnableCrossRequestMiddleware.php
<?php namespace AppHttpMiddleware; use Closure; class EnableCrossRequestMiddleware { /** * Handle an incoming request * @param IlluminateHttpRequest $request * @param Closure $next * @return mixed */ public function handle($request, Closure $next) { return $next($request); }
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}
增加中介軟體內容
<?php
namespace AppHttpMiddleware;
use Closure;
class EnableCrossRequestMiddleware
{
/**
* Handle an incoming request.
*
* @param IlluminateHttpRequest $request
* @param Closure $next
* @return mixed
*/
public function handle($request, Closure $next)
{
$response = $next($request);
$origin = $request->server(`HTTP_ORIGIN`) ? $request->server (`HTTP_ORIGIN`) : ``;
$allow_origin = [
`http://localhost:8000`, // 允許跨域的列表了，可自行修改
];
if (in_array($origin, $allow_origin)) {
$response->header(`Access-Control-Allow-Origin`, $origin);
$response->header(`Access-Control-Allow-Headers`, `Origin, Content-Type, Cookie, X-CSRF-TOKEN, Accept, Authorization, X-XSRF-TOKEN`);
$response->header(`Access-Control-Expose-Headers`, `Authorization, authenticated`);
$response->header(`Access-Control-Allow-Methods`, `GET, POST, PATCH, PUT, OPTIONS`);
$response->header(`Access-Control-Allow-Credentials`, `true`);
}
return $response;
}
}
在核心檔案註冊該中介軟體(在 AppHttpKernel 類的 $middleware 屬性新增，這裡註冊的中介軟體屬於全域性中介軟體)
protected $middleware = [
// more
AppHttpMiddlewareEnableCrossRequestMiddleware::class,
];
⑥composer安裝報錯
報錯：win7下使用命令列安裝的composer使用時莫名其妙報錯
[JsonSchemaExceptionResourceNotFoundException] file_get_contents(file://): failed to open stream: No such file or directory解決：下載Composer-Setup.exe，重新安裝composer