摘要：本文來自原文鏈接歡迎作客我們的學(xué)習(xí)群這個例子將引導(dǎo)你在中使用來創(chuàng)建用戶登錄和注冊的。是的簡稱，可以幫助我們創(chuàng)建用戶認(rèn)證，以此連接前后端。

本文來自pilishen.com----原文鏈接; 歡迎作客我們的php&Laravel學(xué)習(xí)群：109256050

這個例子將引導(dǎo)你在laravel中使用JWT來創(chuàng)建用戶登錄和注冊的API。JWT是Json Web Token的簡稱，可以幫助我們創(chuàng)建用戶認(rèn)證，以此連接前后端。

composer require tymon/jwt-auth

修改config/app.php

"providers" => [
    ....
    "TymonJWTAuthProvidersJWTAuthServiceProvider",
],
"aliases" => [
    ....
    "JWTAuth" => "TymonJWTAuthFacadesJWTAuth"
],

發(fā)布JWT的配置文件，用以修改token過期時(shí)間等：

php artisan vendor:publish --provider="TymonJWTAuthProvidersJWTAuthServiceProvider"

生成jwt的秘鑰：

php artisan jwt:generate

在app/Http/routes.php中（示例用的是laravel 5.2，你也可以放到后期版本的api.php中）

Route::group(["middleware" => ["api","cors"],"prefix" => "api"], function () {
    Route::post("register", "APIController@register");
    Route::post("login", "APIController@login");
    Route::group(["middleware" => "jwt-auth"], function () {
        Route::post("get_user_details", "APIController@get_user_details");
    });
});

這里的cors中間件，這是用來解決跨域請求默認(rèn)被攔截的問題，如果不加就會有下面這個常見報(bào)錯：

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at //test.com/api/register. (Reason: CORS header "Access-Control-Allow-Origin" missing).

所以：

php artisan make:middleware CORS

然后在app/Http/Middleware/CORS.php中：

namespace AppHttpMiddleware;
use Closure;
class CORS
{
    public function handle($request, Closure $next)
    {
        header("Access-Control-Allow-Origin: *");
        
        $headers = [
            "Access-Control-Allow-Methods"=> "POST, GET, OPTIONS, PUT, DELETE",
            "Access-Control-Allow-Headers"=> "Content-Type, X-Auth-Token, Origin"
        ];
        if($request->getMethod() == "OPTIONS") {
            return Response::make("OK", 200, $headers);
        }
        
        $response = $next($request);
        foreach($headers as $key => $value)
            $response->header($key, $value);
        return $response;
    }
}

注冊中間件app/Http/Kernel.php：

namespace AppHttp;
use IlluminateFoundationHttpKernel as HttpKernel;
class Kernel extends HttpKernel
{
    ...
    ...
    protected $routeMiddleware = [
        ...
        "cors" => AppHttpMiddlewareCORS::class,
    ];
}

php artisan make:middleware authJWT

然后app/Http/Middleware/authJWT.php

namespace AppHttpMiddleware;
use Closure;
use JWTAuth;
use Exception;
class authJWT
{
    public function handle($request, Closure $next)
    {
        try {
            $user = JWTAuth::toUser($request->input("token"));
        } catch (Exception $e) {
            if ($e instanceof TymonJWTAuthExceptionsTokenInvalidException){
                return response()->json(["error"=>"Token is Invalid"]);
            }else if ($e instanceof TymonJWTAuthExceptionsTokenExpiredException){
                return response()->json(["error"=>"Token is Expired"]);
            }else{
                return response()->json(["error"=>"Something is wrong"]);
            }
        }
        return $next($request);
    }
}

然后app/Http/Kernel.php

namespace AppHttp;
use IlluminateFoundationHttpKernel as HttpKernel;
class Kernel extends HttpKernel
{
    ...
    ...
    protected $routeMiddleware = [
        ...
        "jwt-auth" => AppHttpMiddlewareauthJWT::class,
    ];
}

在app/Http/Controllers/APIController.php中：

namespace AppHttpControllers;
use IlluminateHttpRequest;
use AppUser;
use Hash;
use JWTAuth;
class APIController extends Controller
{
    
    public function register(Request $request)
    {        
        $input = $request->all();
        $input["password"] = Hash::make($input["password"]);
        User::create($input);
        return response()->json(["result"=>true]);
    }
    
    public function login(Request $request)
    {
        $input = $request->all();
        if (!$token = JWTAuth::attempt($input)) {
            return response()->json(["result" => "wrong email or password."]);
        }
            return response()->json(["result" => $token]);
    }
    
    public function get_user_details(Request $request)
    {
        $input = $request->all();
        $user = JWTAuth::toUser($input["token"]);
        return response()->json(["result" => $user]);
    }
    
}

這里你完全可以使用postman或者rest client等其他工具。

測試Register API：

$.ajax({
    url: "http://learnl52.hd/api/register",
    dataType: "json",
    type: "POST",
    data: {"name":"HD","email":"[email protected]","password":"123456"},
    success: function (data) {
        alert("user created successfully")
    }
});

測試Login API：

$.ajax({
    url: "http://learnl52.hd/api/login",
    dataType: "json",
    type: "POST",
    data: {"email":"[email protected]","password":"123456"},
    success: function (data) {
        alert(data.result)
    }
});

測試User Details API（這里的token是你Login api返回的token）

$.ajax({
    url: "http://learnl52.hd/api/get_user_details",
    dataType: "json",
    type: "POST",
    data: {"token":your toke here},
    success: function (data) {
        console.log(data)
    }
});