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开始安装jwt

（本次安装不建议直接在项目中安装及使用）

1.composer 安装jwt

composer require tymon/jwt-auth 1.0.0-rc.1

2.在config 文件夹的app.php 中注册服务提供者

'providers' => [

    TymonJWTAuthProvidersLaravelServiceProvider::class,
]


'aliases' => [
		'JWTAuth'=> TymonJWTAuthFacadesJWTAuth::class,
        'JWTFactory'=> TymonJWTAuthFacadesJWTFactory::class,
]

3.生成配置文件

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

4.生成jwt 密钥

php artisan jwt:secret

然后会在我们的 .env 文件中生成jwt密钥

5.在auth.php 文件中 配置 auth guard 让api的driver使用jwt

'guards' => [
        'web' => [
            'driver' => 'session',
            'provider' => 'users',
        ],

        'api' => [
            'driver' => 'jwt',//更改此处为jwt
            'provider' => 'users',
        ],
    ],

6.更改 User model使其支持 jwt-auth

<?php

namespace App;

use TymonJWTAuthContractsJWTSubject;
use IlluminateNotificationsNotifiable;
use IlluminateFoundationAuthUser as Authenticatable;

class User extends Authenticatable implements JWTSubject
{
    use Notifiable;
	protected $table = 'users';

    /**
     * Get the identifier that will be stored in the subject claim of the JWT.
     *
     * @return mixed
     */
    public function getJWTIdentifier()
    {
        return $this->getKey();
    }
 
    /**
     * Return a key value array, containing any custom claims to be added to the JWT.
     *
     * @return array
     */
    public function getJWTCustomClaims()
    {
        return [];
    }

7.配置 中间件

在 Middleware 文件夹下新建 ApiAuth.php 中间件文件

<?php

namespace AppHttpMiddleware;

use Closure;
use TymonJWTAuthFacadesJWTAuth;
use TymonJWTAuthExceptionsJWTException;
use TymonJWTAuthExceptionsTokenExpiredException;
use TymonJWTAuthExceptionsTokenInvalidException;

class ApiAuth
{
    /**
     * Handle an incoming request.
     *
     * @param  IlluminateHttpRequest  $request
     * @param  Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        try {
            if (! $user = JWTAuth::parseToken()->authenticate()) {  //获取到用户数据，并赋值给$user
                return response()->json([
                    'errcode' => 1004,
                    'errmsg' => '无此用户'
 
                ], 404);
            }
        return $next($request);
 
    } catch (TokenExpiredException $e) {
 
            return response()->json([
                'errcode' => 1003,
                'errmsg' => 'token 过期' , //token已过期
            ]);
 
        } catch (TokenInvalidException $e) {
 
            return response()->json([
                'errcode' => 1002,
                'errmsg' => 'token 无效',  //token无效
            ]);
 
        } catch (JWTException $e) {
 
            return response()->json([
                'errcode' => 1001,
                'errmsg' => '缺少token' , //token为空
            ]);
 
        }
    }
}

注册中间件 在 Kernel.php 中注册中间件 并设置别名

 protected $routeMiddleware = [
        'api.auth' => AppHttpMiddlewareApiAuth::class,
    ];

到此你的jwt就算安装配置完成了

**基本使用**

1.新建AuthCtorller.php 控制器

php artisan make:controller AuthController

2.编辑 测试控制器

<?php

namespace AppHttpControllers;

use AppUser;
use IlluminateHttpRequest;
use TymonJWTAuthFacadesJWTAuth;
use IlluminateSupportFacadesHash;

class AuthController extends Controller
{
    /**
     * jwt 测试
     */

    //登录
    public function login(Request $request){

        $username = $request->get('username');
        $password = $request->get('password');
        $user_mes = User::where('username','=',$username)->first();
        if (!$user_mes || !Hash::check($password, $user_mes->password)) {
           return "账号或密码错误";
        }
        $token=JWTAuth::fromUser($user_mes);//生成token
        if (!$token) {
            return "登录失败，请重试";
        }
        return response()->json(['token'=>$token]);
        
    }

    //获取用户信息
    public function home(){
        $user=JWTAuth::parseToken()->touser();//获取用户信息
        return $user;

    }

    //退出
    public function logout(){
        JWTAuth::parseToken()->invalidate();//退出
        return '退出成功';
    }

}

3.编辑路由

<?php
Route::post('/login','AuthController@login');//登录
Route::group(['middleware' => 'api.auth'], function () {
    Route::post('/home','AuthController@home');//获取用户信息
    Route::post('/logout','AuthController@logout');//退出
    });

配置JWT过期时间

config/jwt.php

token过期刷新

public function refresh()
    {
        try {
            // 获取旧token
            $old_token = JWTAuth::getToken();
            // 刷新token
            $token = JWTAuth::refresh($old_token);
            // 使老的token无效
            JWTAuth::invalidate($old_token);
            return response()->json([
                'token' => $token,
            ]);
        } catch (JWTException $JWTException) {
            // 如果捕获到此异常，即代表 refresh 也过期了，用户无法刷新令牌，需要重新登录。
            throw new UnauthorizedHttpException('jwt-auth', $JWTException->getMessage());
        }
    }