> 1.进行JWT的安装操作
composer require lcobucci/jwt 3.3
> 2.建立目录，并进行封装JWT
~~~
namespace app\demo\extend\tools\jwt;
use Lcobucci\JWT\Signer\Hmac\Sha256;
use Lcobucci\JWT\Builder;
use Lcobucci\JWT\Parser;
use Lcobucci\JWT\ValidationData;
class Token
{
private static $_config = [
'audience' => 'http://www.pyg.com',//接收人
'id' => '3f2g57a92aa',//token的唯一标识，这里只是一个简单示例
'sign' => 'pinyougou',//签名密钥
'issuer' => 'http://adminapi.pyg.com',//签发人
'expire' => 3600*24 //有效期
];
//生成token
public static function getToken($user_id){
//签名对象
$signer = new Sha256();
//获取当前时间戳
$time = time();
//设置签发人、接收人、唯一标识、签发时间、立即生效、过期时间、用户id、签名
$token = (new Builder())->issuedBy(self::$_config['issuer'])
->canOnlyBeUsedBy(self::$_config['audience'])
->identifiedBy(self::$_config['id'], true)
->issuedAt($time)
->canOnlyBeUsedAfter($time-1)
->expiresAt($time + self::$_config['expire'])
->with('user_id', $user_id)
->sign($signer, self::$_config['sign'])
->getToken();
return (string)$token;
}
//从请求信息中获取token令牌
public static function getRequestToken()
{
if (empty($_SERVER['HTTP_AUTHORIZATION'])) {
return false;
}
$header = $_SERVER['HTTP_AUTHORIZATION'];
$method = 'bearer';
//去除token中可能存在的bearer标识
return trim(str_ireplace($method, '', $header));
}
//从token中获取用户id （包含token的校验）
public static function getUserId($token = null)
{
$user_id = null;
$token = empty($token)?self::getRequestToken():$token;
if (!empty($token)) {
//为了注销token 加以下if判断代码
$delete_token = cache('delete_token') ?: [];
if(in_array($token, $delete_token)){
//token已被删除（注销）
return $user_id;
}
$token = (new Parser())->parse((string) $token);
//验证token
$data = new ValidationData();
$data->setIssuer(self::$_config['issuer']);//验证的签发人
$data->setAudience(self::$_config['audience']);//验证的接收人
$data->setId(self::$_config['id']);//验证token标识
if (!$token->validate($data)) {
//token验证失败
return $user_id;
}
//验证签名
$signer = new Sha256();
if (!$token->verify($signer, self::$_config['sign'])) {
//签名验证失败
return $user_id;
}
//从token中获取用户id
$user_id = $token->getClaim('user_id');
}
return $user_id;
}
}
~~~
3.建立中间件，进行验证操作
~~~
public $arr = ['login'];
public function handle($request, \Closure $next)
{
if (!in_array($request->pathinfo(),$this->arr)) {
$token = JWT::getRequestToken();
if(empty($token))
{
return success('token值为空');
}else{
try {
$openid = JWT::getUserId($token);
if(!$openid)
{
return success('token有误');
}
}catch (\Exception $e)
{
return success('失败');
}
}
}
return $next($request);
}
~~~
4.获取到头部信息
~~~
<IfModule mod_rewrite.c>
Options +FollowSymlinks -Multiviews
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ index.php/?s=$1 [QSA,PT,L]
#增加下面这项
SetEnvIf Authorization .+ HTTP_AUTHORIZATION=$0
</IfModule>
~~~
