这是我的SOAP XML文档:
HTTP/1.1 200 OK
Date: Mon, 12 Mar 2012 15:42:41 GMT
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Cache-Control: private, max-age=0
Content-Type: text/xml; charset=utf-8
Content-Length: 424
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body>
<LoginResponse xmlns="http://localhost/SPFService/">
<LoginResult>
<Reply xmlns="">
<SessionID>cdfbe607-59b1-4912-ae54-2190f1b7c7dd
</SessionID>
</Reply>
</LoginResult>
</LoginResponse>
</soap:Body>
</soap:Envelope>
现在我需要访问SessionID元素的TextNode值。我用创建了一个xpath
$this->dom->loadXML($response);
$this->xpath = new DOMXPath($this->dom);
,其中$response是包含上述xml的字符串。
问题是我只能查询"/soap:Envelope"
和"/soap:Envelope/soap:Body"
。如果我尝试查询"/soap:Envelope/soap:Body/LoginResponse"
,我会得到一个空的DOMNodeList
。我该如何调试这个烂摊子?
好吧,我发现我做错了什么。
由于标记LoginRespone有一个"xmlns"属性,我需要在客户端上注册带有前缀的属性名称空间值(我使用了"x")。这样做:
$this->xpath = new DOMXPath($this->dom);
$this->xpath->registerNamespace('x', "http://localhost/SPFService/");
,其中"http://localhost/SPFService/"是LoginResponse标记的属性"xmlns"值。然后我可以使用xpathQuery来查找,即,"/soap:Envelope/soap:Body/x:LoginResponse"。请注意,我在"LoginResponse"前面加了"x:"。