解析多部分 SOAP 附件的正确方法

Question

直接使用SoapClient，我得到一个异常："看起来我们没有XML文档"，但是通过捕获异常并访问$client->__lastReponse()，我得到了完整的消息 - 描述如下：http://www.w3.org/TR/SOAP-attachments#SOAPMultipart

例：

------=_Part_13_5075710.1359624351743
Content-Type: text/xml; charset=UTF-8
Content-Transfer-Encoding: binary
Content-Id: <740ABC2FC7835A4DF5526C699A3C302D>
<?xml version="1.0" encoding="UTF-8"?><soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><soapenv:Body><ns1:GetOneFileResponse soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" xmlns:ns1="http://schemas.cisco.com/ast/soap/"><DataHandler href="cid:8D6C4A5AD0F2C0339324FBFC92417B5C" xsi:type="ns2:DataHandler" xmlns:ns2="DimeGetFileService"/></ns1:GetOneFileResponse></soapenv:Body></soapenv:Envelope>
------=_Part_13_5075710.1359624351743
Content-Type: application/octet-stream
Content-Transfer-Encoding: binary
Content-Id: <8D6C4A5AD0F2C0339324FBFC92417B5C>
Binary data here 
------=_Part_13_5075710.1359624351743--

假设二进制数据是我尝试通过 SOAP 服务下载的示例请求（作为文本），解析它的正确方法是什么。

我想在没有任何额外扩展的情况下解决这个问题，例如 WSO2，它似乎具有二进制附件 （MTOM） 处理功能，但需要扩展

Answer 1

这绝对不是执行此操作的"正确方法"，但它适用于我的用例：

$client = new SoapClient($wsdl);
try {
  $client->MySoapFunction($argument);
} catch (SoapFault $e)
    {
        if ($e->getMessage() == 'looks like we got no XML document') {
            $response = $client->__getLastResponse();
            $data = $this->_stripSoapHeaders($response);
            return $this->_parseMimeData($data);
        }
protected function _stripSoapHeaders($response)
{
    // Find first occurance of xml tag
    preg_match('/(?<xml><.*??xml version=.*>)/', $response, $match);
    $xml = $match['xml'];
    // Strip SOAP http headers, and SOAP XML
    $offset = strpos($response, $xml) + strlen($xml . PHP_EOL);
    return substr($response, $offset);
}
protected function _parseMimeData($data)
{
    // Find MIME boundary string
    preg_match('/--(?<MIME_boundary>.+?)s/', $data, $match);
    $mimeBoundary = $match['MIME_boundary']; // Always unique compared to content
    // Copy headers to client
    if (preg_match('/(Content-Type: .+?)'.PHP_EOL.'/', $data, $match)) {
        header($match[1]);
    }
    $contentType = $match[1];
    if (preg_match('/(Content-Transfer-Encoding: .+?)'.PHP_EOL.'/', $data, $match)) {
        header($match[1]);
    }
    // Remove string headers and MIME boundaries from data
    preg_match('/(.*Content-Id.+'.PHP_EOL.')/', $data, $match);
    $start = strpos($data, $match[1]) + strlen($match[1]);
    $end = strpos($data, "--$mimeBoundary--");
    $data = substr($data, $start, $end-$start);
    return trim($data, "rn");
}

使用上面的代码，我通过 SOAP API 成功下载了 gzip 二进制文件。