2015-01-20 152 views
0

我在java中使用XPath 1.0,并想选择/检查wsdl文档名称空间,但不幸的是没有设法做到这一点。 我想选择表示为 “定义” 元件 XPath选择wsdl前缀名称空间

  • 命名空间的xmlns 属性

    1. 命名空间的xmlns = “http://schemas.xmlsoap.org/wsdl/”:肥皂=“HTTP:/ /schemas.xmlsoap.org/wsdl/soap/“表示为”definitions“元素的属性。

    我试图XPath表达式:

    1. “//命名空间:: *” 和 “/ * /命名空间:: *”,这似乎是神秘的, ,因为它们返回:

      "http: //www.w3.org/2001/XMLSchema", 
      "http: //www.w3.org/XML/1998/namespace" ????? (where does it come from?) 
      
    2. “/定义/ @ *” 的回报:

      HelloService 
      "http ://www.examples.com/wsdl/HelloService.wsdl" 
      

    有什么办法可以捕获xmlns:soap =“http://schemas.xmlsoap.org/wsdl/soap/”和xmlns =“http://schemas.xmlsoap.org/wsdl/”attributes/namespaces在这个文档中使用XPath?或者其他一些工具?以检查是否节点(属性)或命名空间值等于schemas.xmlsoap.org/wsdl/soap(种类正确的命名空间控制的)

    Wsdl document: 
    <definitions name="HelloService" 
        targetNamespace="http://www.examples.com/wsdl/HelloService.wsdl" 
        xmlns="http://schemas.xmlsoap.org/wsdl/" 
        xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" 
        xmlns:tns="http://www.examples.com/wsdl/HelloService.wsdl" 
        xmlns:xsd="http://www.w3.org/2001/XMLSchema"> 
    
        <message name="SayHelloRequest"> 
         <part name="firstName" type="xsd:string"/> 
        </message> 
        <message name="SayHelloResponse"> 
         <part name="greeting" type="xsd:string"/> 
        </message> 
    
        <portType name="Hello_PortType"> 
         <operation name="sayHello"> 
         <input message="tns:SayHelloRequest"/> 
         <output message="tns:SayHelloResponse"/> 
         </operation> 
        </portType> 
    
        <binding name="Hello_Binding" type="tns:Hello_PortType"> 
        <soap:binding style="rpc" 
         transport="http://schemas.xmlsoap.org/soap/http"/> 
        <operation name="sayHello"> 
         <soap:operation soapAction="sayHello"/> 
         <input> 
         <soap:body 
          encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" 
          namespace="urn:examples:helloservice" 
          use="encoded"/> 
         </input> 
         <output> 
         <soap:body 
          encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" 
          namespace="urn:examples:helloservice" 
          use="encoded"/> 
         </output> 
        </operation> 
        </binding> 
    
        <service name="Hello_Service"> 
         <documentation>WSDL File for HelloService</documentation> 
         <port binding="tns:Hello_Binding" name="Hello_Port"> 
         <soap:address location="http://www.examples.com/SayHello/"/> 
         </port> 
        </service> 
    </definitions> 
    
  • 回答

    0

    对于第一个:

    /*/namespace::*[name()=''] 
    

    结果: http://schemas.xmlsoap.org/wsdl/

    对于第二之一:

    /*/namespace::*[name()='soap'] 
    

    结果:http://schemas.xmlsoap.org/wsdl/soap/

    你应该记住,使命名空间支持java中:

    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); 
    dbf.setNamespaceAware(true); //This is really important, without it that XPath does not work 
    DocumentBuilder db = dbf.newDocumentBuilder(); 
    Document document = db.parse(inputSource); //inputSource, inputStream or file which contains your XML. 
    XPath xpath = XPathFactory.newInstance().newXPath(); 
    String nameSpace = xpath.evaluate("/*/namespace::*[name()='']", document); 
    String soapNameSpace = xpath.evaluate("/*/namespace::*[name()='soap']", document); 
    
    +0

    不工作。你确定它应该适用于Xpath 1.0吗? NodeList result =(NodeList)xpath.evaluate(“/ */namespace :: * [name()='soap']”,doc,XPathConstants.NODESET);和/ */namespace :: * [name()='']不返回任何内容。 – user34618 2015-01-20 20:07:57

    +0

    我已经在http://www.xpathtester.com/xpath中测试过它。它不返回一个NodeList。我更新了答案,以显示每个人的结果。 – 2015-01-20 20:21:35

    +0

    它写在问题“我正在使用Java中的XPath 1.0 ......” – user34618 2015-01-20 20:22:46

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