PHP-扩展SoapClient以处理SWA(带附件的SOAP)


PHP - extending SoapClient to handle SWA (SOAP with Attachment)

我正在尝试处理来自Java SOAP服务的SWA响应。在该SWA响应中,是一个附加到XML末尾的二进制附件以及一些MIME头。我不能将WSO2用于依赖性需求限制。

任何帮助都将不胜感激!

// Input
------=_Part_42_539586119.1332526191981
Content-Type: text/xml; charset=UTF-8
Content-Transfer-Encoding: binary
Content-Id: <03B4708A9544C182C43E51D9ADA1E456>
<?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> ... TRUNCATED XML SOAP RESPONSE ... </soapenv:Body></soapenv:Envelope>
------=_Part_42_539586119.1332526191981
Content-Type: image/png
Content-Transfer-Encoding: binary
Content-Id: <D637B1257E3E5EEA06AF0E45494F8448>
BINARY DATA GOES HERE

// End of input

//拆分响应的脚本+像父类SoapClient一样返回StdObj+对文件执行操作

namespace Project;
class SoapClient extends 'SoapClient
{
    public function __call ($function_name, $arguments)
    {
        // have the parent do a soap call, catch the lastResponse() if an error
        // occurred (eg has an attachment) and parse it out.
        try {
            $r = parent::__call($function_name, $arguments);
            return $r;
        } catch ('Exception $e) {
            // Assumption: When this is sent, it means that a file is being sent
            // because SimpleXML can't process it.
            if ($e->getMessage() == "looks like we got no XML document") {
                $response = parent::__getLastResponse();
                $partString = "/(------=_[a-zA-Z0-9_''.]+)/";
                $outputArr = preg_split($partString, $response);
                // $outputAtt[0] -- empty and is the first MIME Part Header
                // $outputArr[1] -- Mime Header + XML (The SOAP Response)
                // $outputArr[n+1] -- additional files w/ MIME headers
                if (array_key_exists(1, $outputArr)) {
                    // remove the first 5 lines (4 MIME Header lines) + 1 Blank
                    // line
                    $data = implode("'n",
                    array_slice(explode("'n", $outputArr[1]), 5));
                    /// Simple XML Object ... appears to be an empty SimpleXMLElement though ... >:-(
                    $xml = simplexml_load_string($data, null, null, "http://schemas.xmlsoap.org/soap/envelope/");


                } else {
                    // OK Maybe this doesn't actually contain the XML... throw
                    // the original exception.
                    throw new 'SoapFault($e->getMessage(), $e->getCode(),
                    $e->getPrevious());
                }
            } else {
                throw new 'SoapFault($e->getMessage(), $e->getCode(),
                $e->getPrevious());
            }
        }
    }
}

为此使用MIME解析器。这很简单:

require_once('MimeMailParser.class.php');
class SwADownloadSoapClient extends SoapClient
{
    const ATTACHMENT_DIR = '/path/to/saved/attachments/';
    public function __doRequest(
        $request, $location, $action, $version, $one_way=0
    ) {
        // Issue the SOAP request as SoapClient would normall
        $sResult = parent::__doRequest(
                               $request, $location, $action, $version, $one_way);
        // Handle and parse MIME-encoded messages
        // @note We're not doing much inspection
        //       of the XML payload against the attachments ATM
        //       so not sure how greatly this lives up to the spec
        $sResult = $this->_parseMimeMessage($sResult);
        $oParser = new MimeMailParser();
        $oParser->setText($sResult);
        // Save the attachments
        $aAttachments = $oParser->getAttachments();
        foreach($aAttachments as $oAttachment) {
            $sFile = $oAttachment->filename;
            if($rFp = fopen(self::ATTACHMENT_DIR . $sFile, 'w')) {
                while($sBytes = $attachment->read())
                    fwrite($rFp, $sBytes);
                fclose($rFp);
            }
        }
    }
}

如果您想更正确地实现规范,则需要将MIME附件与SOAPXML进行匹配。