Laravel lcobucci JWT 代币发行代币

Question

我正在尝试使用这个包来制作自定义格式的 jwt 令牌。

但我无法理解 $config = $container->get(Configuration::class);

这个 $container 变量是从哪里来的？

有人可以帮助我吗？ 这是docs link

use Lcobucci\JWT\Configuration;

$config = $container->get(Configuration::class);
assert($config instanceof Configuration);

$now   = new DateTimeImmutable();
$token = $config->builder()
                // Configures the issuer (iss claim)
                ->issuedBy('http://example.com')
                // Configures the audience (aud claim)
                ->permittedFor('http://example.org')
                // Configures the id (jti claim)
                ->identifiedBy('4f1g23a12aa')
                // Configures the time that the token was issue (iat claim)
                ->issuedAt($now)
                // Configures the time that the token can be used (nbf claim)
                ->canOnlyBeUsedAfter($now->modify('+1 minute'))
                // Configures the expiration time of the token (exp claim)
                ->expiresAt($now->modify('+1 hour'))
                // Configures a new claim, called "uid"
                ->withClaim('uid', 1)
                // Configures a new header, called "foo"
                ->withHeader('foo', 'bar')
                // Builds a new token
                ->getToken($config->signer(), $config->signingKey());
Once you've created a token, you're able to retrieve its data and convert it to its string representation:

use Lcobucci\JWT\Configuration;

$config = $container->get(Configuration::class);
assert($config instanceof Configuration);

$token = $config->builder()
                ->issuedBy('http://example.com')
                ->withClaim('uid', 1)
                ->withHeader('foo', 'bar')
                ->getToken($config->signer(), $config->signingKey());

$token->headers(); // Retrieves the token headers
$token->claims(); // Retrieves the token claims

echo $token->headers()->get('foo'); // will print "bar"
echo $token->claims()->get('iss'); // will print "http://example.com"
echo $token->claims()->get('uid'); // will print "1"

echo $token->toString(); // The string representation of the object 

Answer 1

就像打电话给Service Container

在 Laravel 中，您可以使用 app() 帮助器创建 Configuration::class，但更好的方式 - 从构造函数注入

通过助手

$config = app()->make(Configuration::class);

通过构造函数注入

class JWTBuilderClass
{
    private Configuration $configuration;

    public function __construct(Configuration $configuration)
    {
        $this->configuration = $configuration;
    }
}

在您从容器中获取配置之前 - 您必须将其放入容器中 - 绑定类。这是docs 关于配置创建的内容。在 AppServiceProvider::register():

$this->app->bind(Configuration::class, function(){
    return Configuration::forAsymmetricSigner(
    // You may use RSA or ECDSA and all their variations (256, 384, and 512) and EdDSA over Curve25519
    new Signer\Rsa\Sha256(),
    LocalFileReference::file(__DIR__ . '/my-private-key.pem'),
       InMemory::base64Encoded('mBC5v1sOKVvbdEitdSBenu59nfNfhwkedkJVNabosTw=')
    // You may also override the JOSE encoder/decoder if needed by providing extra arguments here
    );
});

顺便说一句，使用包 tymondesigns/jwt-auth - 这是 Laravel 的 JWT 实现