如何从 guzzle 请求中获取和显示图像

Posted 2023-03-14

【中文标题】如何从 guzzle 请求中获取和显示图像

【英文标题】：How to get and display an image from a guzzle request

【发布时间】：2019-09-16 18:48:51

【问题描述】：

我正在尝试显示来自 guzzle 请求的图像，一切正常，但我无法显示图像。

这是我在尝试获取用户数据时得到的结果

object(GuzzleHttp\Psr7\Response)#427 (6)  ["reasonPhrase":"GuzzleHttp\Psr7\Response":private]=> string(2) "OK" ["statusCode":"GuzzleHttp\Psr7\Response":private]=> int(200) ["headers":"GuzzleHttp\Psr7\Response":private]=> array(14)  ["Server"]=> array(1)  [0]=> string(6) "Cowboy"  ["Connection"]=> array(1)  [0]=> string(10) "keep-alive"  ["X-Powered-By"]=> array(1)  [0]=> string(7) "Express"  ["X-Timestamp"]=> array(1)  [0]=> string(13) "1556374181931"  ["Content-Disposition"]=> array(1)  [0]=> string(51) "attachment; filename =profile_img-1556366764744.jpg"  ["X-Sent"]=> array(1)  [0]=> string(4) "true"  ["Accept-Ranges"]=> array(1)  [0]=> string(5) "bytes"  ["Cache-Control"]=> array(1)  [0]=> string(17) "public, max-age=0"  ["Last-Modified"]=> array(1)  [0]=> string(29) "Sat, 27 Apr 2019 12:06:07 GMT"  ["Etag"]=> array(1)  [0]=> string(21) "W/"12d37-16a5eb034ec""  ["Content-Type"]=> array(1)  [0]=> string(10) "image/jpeg"  ["Content-Length"]=> array(1)  [0]=> string(5) "77111"  ["Date"]=> array(1)  [0]=> string(29) "Sat, 27 Apr 2019 14:09:41 GMT"  ["Via"]=> array(1)  [0]=> string(9) "1.1 vegur"   ["headerNames":"GuzzleHttp\Psr7\Response":private]=> array(14)  ["server"]=> string(6) "Server" ["connection"]=> string(10) "Connection" ["x-powered-by"]=> string(12) "X-Powered-By" ["x-timestamp"]=> string(11) "X-Timestamp" ["content-disposition"]=> string(19) "Content-Disposition" ["x-sent"]=> string(6) "X-Sent" ["accept-ranges"]=> string(13) "Accept-Ranges" ["cache-control"]=> string(13) "Cache-Control" ["last-modified"]=> string(13) "Last-Modified" ["etag"]=> string(4) "Etag" ["content-type"]=> string(12) "Content-Type" ["content-length"]=> string(14) "Content-Length" ["date"]=> string(4) "Date" ["via"]=> string(3) "Via"  ["protocol":"GuzzleHttp\Psr7\Response":private]=> string(3) "1.1" ["stream":"GuzzleHttp\Psr7\Response":private]=> object(GuzzleHttp\Psr7\Stream)#425 (7)  ["stream":"GuzzleHttp\Psr7\Stream":private]=> resource(350) of type (stream) ["size":"GuzzleHttp\Psr7\Stream":private]=> NULL ["seekable":"GuzzleHttp\Psr7\Stream":private]=> bool(true) ["readable":"GuzzleHttp\Psr7\Stream":private]=> bool(true) ["writable":"GuzzleHttp\Psr7\Stream":private]=> bool(true) ["uri":"GuzzleHttp\Psr7\Stream":private]=> string(10) "php://temp" ["customMetadata":"GuzzleHttp\Psr7\Stream":private]=> array(0)     

public function getUserProfileImg(Request $request)

    $userid = $_COOKIE['id'];

    $requestResult = $this->sendGetWithHeader('users/image/'.$userid );

    //$result = $requestResult->getBody()->readfile($filename);

    //$result = $requestResult->getBody();
    //$body = json_decode((string) $requestResult->file($pathToFile, $headers), true);

    //$status = $requestResult->getStatusCode();
    var_dump($requestResult);

    //var_dump($result);

我期待一张图片

【参考方案1】：

一旦您从 guzzle 获得图像的响应，

$client = new \GuzzleHttp\Client(['base_uri' => 'https://www.example.com']);
$response = $client->request('GET', 'wallpaper/wallpaper-preview.jpg', ['stream' => true]);

然后您可以将其编码为 base64 并以某种格式发送。可以使用php提供的base64_encode()函数。

'data:image/jpeg;base64,your-base-64-encodedstring'示例： 'data:image/gif;base64,R0lGODlhAAEwAMQAAJ2M5Me98GRK1DoYyYBr3PHv++Pe99XO81Y50auc6PBkZEgpzbmt7HJa2I57fS3CqU7XGYgE+GqHvrLJ8Tr6qXmqiwAF9CffgnMNqmWHAWNBwwGsKpKsrmJqltOOV69nuYxSkqpoTata18rWtrr1rTIIAQA7'

$body = $response->getBody()->getContents();
$base64 = base64_encode($body);
$mime = "image/jpeg";
$img = ('data:' . $mime . ';base64,' . $base64);
return "<img src=$img alt='ok'>";

额外

你可以使用$response->getHeader('Content-Type')[0];从响应中获取mime类型（上面代码sn-p中的$mime）

【参考方案2】：

以下代码示例用于从kodementor.com 检索/显示图像 关键是echo结果，让图片显示出来。

public function promiseGuzzleRequest()

    $client = new Client(['base_uri' => 'http://httpbin.org/']); //your domain

    // Initiate each request but do not block
    $promises = [
        'image' => $client->getAsync('/image'),
        'png'   => $client->getAsync('/image/png'),
        'jpeg'  => $client->getAsync('/image/jpeg'),
        'webp'  => $client->getAsync('/image/webp')
    ];

    // Wait on all of the requests to complete. Throws a ConnectException
    // if any of the requests fail
    $results = Promise\unwrap($promises);

    // Wait for the requests to complete, even if some of them fail
    $results = Promise\settle($promises)->wait();

    // You can access each result using the key provided to the unwrap
    // function.
    echo $results['image']['value']->getHeader('Content-Length')[0];
    echo $results['png']['value']->getHeader('Content-Length')[0];

希望对你有帮助

【讨论】：

感谢您的回答 Rachel Gallen，但我的目标是使用流从 guzzle 请求中获取图像。如果您能提供帮助，我将不胜感激

这是我下面的代码尝试 $result = $this->gClient->request('GET', $url, [ 'headers' => [ 'Authorization'=>'Bearer '. $this->accessToken ], [ 'stream' => true, ] ]); catch(\GuzzleHttp\Exception\ClientException $e) $this->getGetErr = json_decode($e->getResponse()->getBody());返回 $this->getGetErr; //\GuzzleHttp\Exception\ConnectException 检查返回 $result;