Php RESTAPI调用：如何将Google Drive与laravel 5连接？

目前与AWS合作使用laravel 5，需要将google drive添加到我的laravel项目中，如何连接到google drive为用户上传和查看文件

我尝试了以下示例，但获得所需登录错误。如何在上传文件之前获取访问令牌

    $client = new Google_Client();
    $client->setClientId('abc.apps.googleusercontent.com');
    $client->setClientSecret('abc');
    $client->setRedirectUri('abc');
    $client->setScopes(array('https://www.googleapis.com/auth/drive.file'));

    if (isset($_GET['code']) || (isset($_SESSION['access_token']) && $_SESSION['access_token'])) 
    {
        if (isset($_GET['code'])){

            $client->authenticate($_GET['code']);
            $_SESSION['access_token'] = $client->getAccessToken();
        }
        else
            $client->setAccessToken($_SESSION['access_token']);

            $service = new Google_Service_Drive($client);

            $file = new Google_Service_Drive_DriveFile();
            $file->setDescription('image');
            $file->setMimeType('image/png');

            $data = file_get_contents(public_path('images\log.png');
            $createdFile = $service->files->create($file, array(
                        'data' => $data,
                        'mimeType' => 'image/png',
                        'uploadType' => 'multipart'
                    ));

            return $createdFile;

 } else {
      $authUrl = $client->createAuthUrl();
      header('Location: ' . $authUrl);
      exit();
 }

也许你可以看看这个。它指出了如何在谷歌硬盘上登录和上传文件

下面是文章中指定的github代码

<?php
/*
 * Copyright 2011 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
include_once __DIR__ . '/../vendor/autoload.php';
include_once "templates/base.php";
echo pageHeader("File Upload - Uploading a large file");
/*************************************************
 * Ensure you've downloaded your oauth credentials
 ************************************************/
if (!$oauth_credentials = getOAuthCredentialsFile()) {
  echo missingOAuth2CredentialsWarning();
  return;
}
/************************************************
 * The redirect URI is to the current page, e.g:
 * http://localhost:8080/large-file-upload.php
 ************************************************/
$redirect_uri = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
$client = new Google_Client();
$client->setAuthConfig($oauth_credentials);
$client->setRedirectUri($redirect_uri);
$client->addScope("https://www.googleapis.com/auth/drive");
$service = new Google_Service_Drive($client);
// add "?logout" to the URL to remove a token from the session
if (isset($_REQUEST['logout'])) {
  unset($_SESSION['upload_token']);
}
/************************************************
 * If we have a code back from the OAuth 2.0 flow,
 * we need to exchange that with the
 * Google_Client::fetchAccessTokenWithAuthCode()
 * function. We store the resultant access token
 * bundle in the session, and redirect to ourself.
 ************************************************/
if (isset($_GET['code'])) {
  $token = $client->fetchAccessTokenWithAuthCode($_GET['code']);
  $client->setAccessToken($token);
  // store in the session also
  $_SESSION['upload_token'] = $token;
  // redirect back to the example
  header('Location: ' . filter_var($redirect_uri, FILTER_SANITIZE_URL));
}
// set the access token as part of the client
if (!empty($_SESSION['upload_token'])) {
  $client->setAccessToken($_SESSION['upload_token']);
  if ($client->isAccessTokenExpired()) {
    unset($_SESSION['upload_token']);
  }
} else {
  $authUrl = $client->createAuthUrl();
}
/************************************************
 * If we're signed in then lets try to upload our
 * file.
 ************************************************/
if ($_SERVER['REQUEST_METHOD'] == 'POST' && $client->getAccessToken()) {
  /************************************************
   * We'll setup an empty 20MB file to upload.
   ************************************************/
  DEFINE("TESTFILE", 'testfile.txt');
  if (!file_exists(TESTFILE)) {
    $fh = fopen(TESTFILE, 'w');
    fseek($fh, 1024*1024*20);
    fwrite($fh, "!", 1);
    fclose($fh);
  }
  $file = new Google_Service_Drive_DriveFile();
  $file->name = "Big File";
  $chunkSizeBytes = 1 * 1024 * 1024;
  // Call the API with the media upload, defer so it doesn't immediately return.
  $client->setDefer(true);
  $request = $service->files->create($file);
  // Create a media file upload to represent our upload process.
  $media = new Google_Http_MediaFileUpload(
      $client,
      $request,
      'text/plain',
      null,
      true,
      $chunkSizeBytes
  );
  $media->setFileSize(filesize(TESTFILE));
  // Upload the various chunks. $status will be false until the process is
  // complete.
  $status = false;
  $handle = fopen(TESTFILE, "rb");
  while (!$status && !feof($handle)) {
    // read until you get $chunkSizeBytes from TESTFILE
    // fread will never return more than 8192 bytes if the stream is read buffered and it does not represent a plain file
    // An example of a read buffered file is when reading from a URL
    $chunk = readVideoChunk($handle, $chunkSizeBytes);
    $status = $media->nextChunk($chunk);
  }
  // The final value of $status will be the data from the API for the object
  // that has been uploaded.
  $result = false;
  if ($status != false) {
    $result = $status;
  }
  fclose($handle);
}
function readVideoChunk ($handle, $chunkSize)
{
    $byteCount = 0;
    $giantChunk = "";
    while (!feof($handle)) {
        // fread will never return more than 8192 bytes if the stream is read buffered and it does not represent a plain file
        $chunk = fread($handle, 8192);
        $byteCount += strlen($chunk);
        $giantChunk .= $chunk;
        if ($byteCount >= $chunkSize)
        {
            return $giantChunk;
        }
    }
    return $giantChunk;
}
?>

<div class="box">
<?php if (isset($authUrl)): ?>
  <div class="request">
    <a class='login' href='<?= $authUrl ?>'>Connect Me!</a>
  </div>
<?php elseif($_SERVER['REQUEST_METHOD'] == 'POST'): ?>
  <div class="shortened">
    <p>Your call was successful! Check your drive for this file:</p>
    <p><a href="https://drive.google.com/open?id=<?= $result->id ?>" target="_blank"><?= $result->name ?></a></p>
    <p>Now try <a href="/large-file-download.php">downloading a large file from Drive</a>.
  </div>
<?php else: ?>
  <form method="POST">
    <input type="submit" value="Click here to upload a large (20MB) test file" />
  </form>
<?php endif ?>
</div>

<?= pageFooter(__FILE__) ?>

也许你可以检查一下。它指出了如何在谷歌硬盘上登录和上传文件

下面是文章中指定的github代码

<?php
/*
 * Copyright 2011 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
include_once __DIR__ . '/../vendor/autoload.php';
include_once "templates/base.php";
echo pageHeader("File Upload - Uploading a large file");
/*************************************************
 * Ensure you've downloaded your oauth credentials
 ************************************************/
if (!$oauth_credentials = getOAuthCredentialsFile()) {
  echo missingOAuth2CredentialsWarning();
  return;
}
/************************************************
 * The redirect URI is to the current page, e.g:
 * http://localhost:8080/large-file-upload.php
 ************************************************/
$redirect_uri = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
$client = new Google_Client();
$client->setAuthConfig($oauth_credentials);
$client->setRedirectUri($redirect_uri);
$client->addScope("https://www.googleapis.com/auth/drive");
$service = new Google_Service_Drive($client);
// add "?logout" to the URL to remove a token from the session
if (isset($_REQUEST['logout'])) {
  unset($_SESSION['upload_token']);
}
/************************************************
 * If we have a code back from the OAuth 2.0 flow,
 * we need to exchange that with the
 * Google_Client::fetchAccessTokenWithAuthCode()
 * function. We store the resultant access token
 * bundle in the session, and redirect to ourself.
 ************************************************/
if (isset($_GET['code'])) {
  $token = $client->fetchAccessTokenWithAuthCode($_GET['code']);
  $client->setAccessToken($token);
  // store in the session also
  $_SESSION['upload_token'] = $token;
  // redirect back to the example
  header('Location: ' . filter_var($redirect_uri, FILTER_SANITIZE_URL));
}
// set the access token as part of the client
if (!empty($_SESSION['upload_token'])) {
  $client->setAccessToken($_SESSION['upload_token']);
  if ($client->isAccessTokenExpired()) {
    unset($_SESSION['upload_token']);
  }
} else {
  $authUrl = $client->createAuthUrl();
}
/************************************************
 * If we're signed in then lets try to upload our
 * file.
 ************************************************/
if ($_SERVER['REQUEST_METHOD'] == 'POST' && $client->getAccessToken()) {
  /************************************************
   * We'll setup an empty 20MB file to upload.
   ************************************************/
  DEFINE("TESTFILE", 'testfile.txt');
  if (!file_exists(TESTFILE)) {
    $fh = fopen(TESTFILE, 'w');
    fseek($fh, 1024*1024*20);
    fwrite($fh, "!", 1);
    fclose($fh);
  }
  $file = new Google_Service_Drive_DriveFile();
  $file->name = "Big File";
  $chunkSizeBytes = 1 * 1024 * 1024;
  // Call the API with the media upload, defer so it doesn't immediately return.
  $client->setDefer(true);
  $request = $service->files->create($file);
  // Create a media file upload to represent our upload process.
  $media = new Google_Http_MediaFileUpload(
      $client,
      $request,
      'text/plain',
      null,
      true,
      $chunkSizeBytes
  );
  $media->setFileSize(filesize(TESTFILE));
  // Upload the various chunks. $status will be false until the process is
  // complete.
  $status = false;
  $handle = fopen(TESTFILE, "rb");
  while (!$status && !feof($handle)) {
    // read until you get $chunkSizeBytes from TESTFILE
    // fread will never return more than 8192 bytes if the stream is read buffered and it does not represent a plain file
    // An example of a read buffered file is when reading from a URL
    $chunk = readVideoChunk($handle, $chunkSizeBytes);
    $status = $media->nextChunk($chunk);
  }
  // The final value of $status will be the data from the API for the object
  // that has been uploaded.
  $result = false;
  if ($status != false) {
    $result = $status;
  }
  fclose($handle);
}
function readVideoChunk ($handle, $chunkSize)
{
    $byteCount = 0;
    $giantChunk = "";
    while (!feof($handle)) {
        // fread will never return more than 8192 bytes if the stream is read buffered and it does not represent a plain file
        $chunk = fread($handle, 8192);
        $byteCount += strlen($chunk);
        $giantChunk .= $chunk;
        if ($byteCount >= $chunkSize)
        {
            return $giantChunk;
        }
    }
    return $giantChunk;
}
?>

<div class="box">
<?php if (isset($authUrl)): ?>
  <div class="request">
    <a class='login' href='<?= $authUrl ?>'>Connect Me!</a>
  </div>
<?php elseif($_SERVER['REQUEST_METHOD'] == 'POST'): ?>
  <div class="shortened">
    <p>Your call was successful! Check your drive for this file:</p>
    <p><a href="https://drive.google.com/open?id=<?= $result->id ?>" target="_blank"><?= $result->name ?></a></p>
    <p>Now try <a href="/large-file-download.php">downloading a large file from Drive</a>.
  </div>
<?php else: ?>
  <form method="POST">
    <input type="submit" value="Click here to upload a large (20MB) test file" />
  </form>
<?php endif ?>
</div>

<?= pageFooter(__FILE__) ?>


使用google服务帐户避免登录或访问令牌
将服务帐户json文件附加到google客户端API（在服务帐户页面中创建密钥）
将文件上载到google drive并获取文件id
使用文件id在浏览器中访问您的文件
例如：
使用两个函数创建和查看文件

public function uploadTogoogleDrive(){
    $client = new Google_Client();
    $client->setAuthConfig(public_path('service_account.json'));
    $client->setScopes(array('https://www.googleapis.com/auth/drive','https://www.googleapis.com/auth/drive.file'));
    $client->setRedirectUri('http://' . $_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']);

    $service = new Google_Service_Drive($client);

    $fileMetadata = new Google_Service_Drive_DriveFile(array(
        'name' => 'DefaltReport.pdf'));
    $content = file_get_contents(public_path('reports\DefaltReport.pdf'));
    $file = $service->files->create($fileMetadata, array(
        'data' => $content,
        'mimeType' => 'application/pdf',
        'uploadType' => 'multipart',
        'fields' => 'id'));
    printf("File ID: %s\n", $file->id); // Your file id

}

public function viewGoogleDriveFile(){

    $fileId = $_GET['fileId'];
    $client = new Google_Client();
    $client->setAuthConfig(public_path('service_account.json'));
    $client->setScopes(array('https://www.googleapis.com/auth/drive','https://www.googleapis.com/auth/drive.file'));
    $client->setRedirectUri('http://' . $_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']);

    $service = new Google_Service_Drive($client);

    $response = $service->files->get($fileId, array(
        'alt' => 'media' ));
    header('Content-type:application/pdf');
    echo $content = $response->getBody()->getContents();
}

使用google服务帐户避免登录或访问令牌
将服务帐户json文件附加到google客户端API（在服务帐户页面中创建密钥）
将文件上载到google drive并获取文件id
使用文件id在浏览器中访问您的文件
例如：
使用两个函数创建和查看文件

public function uploadTogoogleDrive(){
    $client = new Google_Client();
    $client->setAuthConfig(public_path('service_account.json'));
    $client->setScopes(array('https://www.googleapis.com/auth/drive','https://www.googleapis.com/auth/drive.file'));
    $client->setRedirectUri('http://' . $_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']);

    $service = new Google_Service_Drive($client);

    $fileMetadata = new Google_Service_Drive_DriveFile(array(
        'name' => 'DefaltReport.pdf'));
    $content = file_get_contents(public_path('reports\DefaltReport.pdf'));
    $file = $service->files->create($fileMetadata, array(
        'data' => $content,
        'mimeType' => 'application/pdf',
        'uploadType' => 'multipart',
        'fields' => 'id'));
    printf("File ID: %s\n", $file->id); // Your file id

}

public function viewGoogleDriveFile(){

    $fileId = $_GET['fileId'];
    $client = new Google_Client();
    $client->setAuthConfig(public_path('service_account.json'));
    $client->setScopes(array('https://www.googleapis.com/auth/drive','https://www.googleapis.com/auth/drive.file'));
    $client->setRedirectUri('http://' . $_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']);

    $service = new Google_Service_Drive($client);

    $response = $service->files->get($fileId, array(
        'alt' => 'media' ));
    header('Content-type:application/pdf');
    echo $content = $response->getBody()->getContents();
}