DocuSign集成遇NO_DOCUMENT_RECEIVED错误：动态文档方案故障求助

调用DocuSign接口时触发404错误：

"NO_DOCUMENT_RECEIVED": "The document element did not contain the encoded document, 'documentId='possibly missing from Content-Disposition header."

应用需要支持用户选择待签署文档，目前实现了两种方案，一种可行一种不可行，希望修复动态获取文档的方案。

不可行方案（动态从数据库获取文档路径） #

通过$args["doccontent"]获取PDF路径后处理，代码如下：

$doc_internal_name = str_replace("http://127.0.0.1:8000/","C:/laragon2/www/ApplicationNAme/public/",$args['doccontent']); 

$doc_content = file_get_contents($doc_internal_name );

$base64FileContent = base64_encode($doc_content);

$document = new Document(
    [
        'document_base64' => $base64FileContent,
        'name' => 'testdoc',
        'file_extension' => "pdf",
        'document_id' => 1
    ]
);

/* Create the signer recipient model */
$signer = new \DocuSign\eSign\Model\Signer([
    'email' => email,  
    'name' => name , 
    'recipient_id' => '1', 
    'routing_order' => '1',
    'client_user_id' => $args['signer_client_id']
]);

/* Create a signHere tab (field on the document) */
$signHere = new \DocuSign\eSign\Model\SignHere([
    'anchor_string' => '/sn1/', 
    'anchor_units' => 'pixels',
    'anchor_y_offset' => '10', 
    'anchor_x_offset' => '20'
]);

/* Create a signHere 2 tab (field on the document) */
$signHere2 = new \DocuSign\eSign\Model\SignHere([
    'anchor_string' => '/sn2/', 
    'anchor_units' => 'pixels',
    'anchor_y_offset' => '40', 
    'anchor_x_offset' => '40'
]);

$signer->settabs(new \DocuSign\eSign\Model\Tabs(['sign_here_tabs' => [$signHere, $signHere2]]));

$envelopeDefinition  = new \DocuSign\eSign\Model\EnvelopeDefinition([
    'email_subject' => "Please sign this document",
    'documents' => [$document],
    'recipients' => new \DocuSign\eSign\Model\Recipients(['signers' => [$signer]]),
]);

return $envelopeDefinition;

可行方案（硬编码本地文档路径） #

直接使用同一文档的本地路径，代码如下：

$content = file_get_contents("../public/uploads/zbD0nVz3NoEYjg2ttHnrhoJ7JM7OQbqSVQCnNT8U.pdf");
$base64FileContent = base64_encode($content);
$document = new Document(
    [
        'document_base64' => $base64FileContent,
        'name' => 'test',
        'file_extension' => 'pdf',
        'document_id' => 1
    ]
);

/* Create the signer recipient model */
$signer = new \DocuSign\eSign\Model\Signer([
    'email' => email,  
    'name' => name , 
    'recipient_id' => '1', 
    'routing_order' => '1',
    'client_user_id' => $args['signer_client_id']
]);

/* Create a signHere tab (field on the document) */
$signHere = new \DocuSign\eSign\Model\SignHere([
    'anchor_string' => '/sn1/', 
    'anchor_units' => 'pixels',
    'anchor_y_offset' => '10', 
    'anchor_x_offset' => '20'
]);

/* Create a signHere 2 tab (field on the document) */
$signHere2 = new \DocuSign\eSign\Model\SignHere([
    'anchor_string' => '/sn2/', 
    'anchor_units' => 'pixels',
    'anchor_y_offset' => '40', 
    'anchor_x_offset' => '40'
]);

$signer->settabs(new \DocuSign\eSign\Model\Tabs(['sign_here_tabs' => [$signHere, $signHere2]]));

$envelopeDefinition  = new \DocuSign\eSign\Model\EnvelopeDefinition([
    'email_subject' => "Please sign this document",
    'documents' => [$document],
    'recipients' => new \DocuSign\eSign\Model\Recipients(['signers' => [$signer]]),
]);

return $envelopeDefinition;

希望各位提供排查思路，修复动态获取文档的方案，支持不同用户签署不同文档。

内容的提问来源于stack exchange，提问作者user16795407