错误：找不到类“Firebase\JWT\SignatureInvalidException”

Question

我正在使用 codeigniter、Rest Server 和 firebase php-jwt 创建 rest api。以下是我创建 jwt 令牌的代码。

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

require_once APPPATH . '/libraries/REST_Controller.php';
require_once APPPATH . '/libraries/JWT.php';
use \Firebase\JWT\JWT;

class Welcome extends REST_Controller 
{
    public function __construct($config = 'rest') 
    {
        parent::__construct($config);
        $this->load->model("Users_model");
    }
    public function login_post() 
    {
        $username = $this->post('username');
        $password = $this->post('password');
        $invalidLogin = ['invalid' => $username];
        if(!$username || !$password){
            $this->response($invalidLogin, REST_Controller::HTTP_NOT_FOUND);
        }
        $id = $this->Users_model->checkLogin($username,$password);
        if($id) {
            $token['id'] = $id;
            $token['username'] = $username;
            $date = new DateTime();
            $token['iat'] = $date->getTimestamp();
            $token['exp'] = $date->getTimestamp() + 60*60*5;
            $output['id_token'] = JWT::encode($token, $this->config->item('jwt_secret_key'));
            $this->set_response($output, REST_Controller::HTTP_OK);
        } else {
            $this->set_response($invalidLogin, REST_Controller::HTTP_NOT_FOUND);
        }
    }

    /******** This is target test function having error **********/ 
    public function test_post()
    {
        $token = $this->input->get_request_header('Authorization');
        try{
            $payload = JWT::decode($token, $this->config->item('jwt_secret_key'),array('HS256'));
            $this->response($payload, REST_Controller::HTTP_OK);
        } catch (Exception $ex) {
            $response = array("message" => $ex->getMessage());
            $this->response($response, REST_Controller::HTTP_UNAUTHORIZED);
        } 
    }
}

我的库文件夹中有以下文件

1. BeforeValidException.php
2. ExpiredException.php
3. Format.php
4. JWT.php
5. REST_Controller.php
6. SignatureInvalidException.php

当我使用带有错误令牌（更改签名中的字符串）的邮递员进行测试时，给出的错误是

遇到未捕获的异常

Type: Error
Message: Class 'Firebase\JWT\SignatureInvalidException' not found
Filename: .../application/libraries/JWT.php</p>
Line Number: 113

Jwt.php 上有以下代码

    // Check the signature
    if (!static::verify("$headb64.$bodyb64", $sig, $key, $header->alg)) {
        throw new SignatureInvalidException('Signature verification failed');  // This is line 113
    }

但我的库文件夹中有这个文件。 任何帮助将不胜感激。

Answer 1

我认为你必须在JWT.php之前签名require_once

codeigniter 库中的文件将是这样的。

class SignatureInvalidException extends \UnexpectedValueException
{
}