dangfei-api/app/Http/Middleware/AdminRefreshToken.php

<?php
namespace App\Http\Middleware;

use Illuminate\Support\Facades\Auth;
use Closure;
use Tymon\JWTAuth\Exceptions\JWTException;
use Tymon\JWTAuth\Http\Middleware\BaseMiddleware;
use Tymon\JWTAuth\Exceptions\TokenExpiredException;

class AdminRefreshToken extends BaseMiddleware
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        // 检查此次请求中是否带有 token，如果没有则抛出异常。
        $this->checkForToken($request);
        // 使用 try 包裹，以捕捉 token 过期所抛出的 TokenExpiredException  异常
//         // 检测用户的登录状态，如果正常则通过
        if (Auth::guard('admin')->check()) {
            $admin_id = Auth::guard('admin')->payload()['sub'];
            $time = Auth::guard('admin')->payload()['exp'];
//var_dump(Auth::guard('admin')->payload()['nbf'],$time);exit;
            //刷新Token
            if(($time - time()) < 60*60 && ($time - time()) > 0){
                $token = Auth::guard('admin')->refresh();
                if($token){
                    $request->headers->set('Authorization', 'Bearer '.$token);
                }else{
					return response()->json(['error_code'=>401,'msg'=>'token有误，请重新登录'],401);
                }
                // 在响应头中返回新的 token
                $respone = $next($request);
                if(isset($token) && $token){
                    $respone->headers->set('Authorization', 'Bearer '.$token);
                }
                return $respone;
            }
            //token通过验证 执行下一补操作
            return $next($request);
        }
		return response()->json(['error_code'=>401,'msg'=>'未登录，请登录'],401);
    }
}