XPath评估空目标节点中的结果

时间:2017-06-20 19:54:43

标签: java xpath jaxb wsdl jax-ws

我的wsdl规范包含导入的XSD架构。

wsdl文件如下所示

<wsdl:definitions xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" ....>
<wsdl:types>
<xsd:schema targetNamespace="http://tempuri.org/Imports">
<xsd:import schemaLocation="https://abcserver.com/v2/two-way-ssl/MyService.svc?xsd=xsd2" namespace="http://tempuri.org/"/>
<xsd:import schemaLocation="https://abcserver.com/v2/two-way-ssl/MyService.svcc?xsd=xsd4" namespace="http://schemas.datacontract.org/2004/07/System.Web.Services.Protocols"/>
<xsd:import schemaLocation="https://abcserver.com/v2/two-way-ssl/MyService.svc?xsd=xsd0" namespace="http://schemas.microsoft.com/2003/10/Serialization/"/>
<xsd:import schemaLocation="https://abcserver.com/v2/two-way-ssl/MyService.svc?xsd=xsd1" namespace="http://schemas.datacontract.org/2004/07/ABCUser.Web.Services"/>
<xsd:import schemaLocation="https://abcserver.com/v2/two-way-ssl/MyService.svc?xsd=xsd3" namespace="http://schemas.datacontract.org/2004/07/ABCUser.Web.ServiceModels"/>
<xsd:import schemaLocation="https://abcserver.com/v2/two-way-ssl/MyService.svc?xsd=xsd5" namespace="http://schemas.datacontract.org/2004/07/System"/>
<xsd:import schemaLocation="https://abcserver.com/v2/two-way-ssl/MyService.svc?xsd=xsd6" namespace="http://schemas.microsoft.com/2003/10/Serialization/Arrays"/>
<xsd:import schemaLocation="https://abcserver.com/v2/two-way-ssl/MyService.svc?xsd=xsd7" namespace="http://schemas.datacontract.org/2004/07/System.Collections.Generic"/>
<xsd:import schemaLocation="https://abcserver.com/v2/two-way-ssl/MyService.svc?xsd=xsd8" namespace="http://schemas.datacontract.org/2004/07/ABC.Fs.UIEntities"/>
<xsd:import schemaLocation="https://abcserver.com/v2/two-way-ssl/MyService.svc?xsd=xsd9"/>
</xsd:schema>
</wsdl:types>
 .......
 </wsdl:definitions>

我的jaxb绑定文件如下所示:

<jaxws:bindings xmlns:xs="http://www.w3.org/2001/XMLSchema"
    xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
    xmlns:jaxws="http://java.sun.com/xml/ns/jaxws"
    xmlns:jaxb="http://java.sun.com/xml/ns/jaxb" jaxb:version="2.1"
    wsdlLocation="https://abcserver.com/v2/two-way-ssl/MyService.svc?wsdl">
    <enableWrapperStyle>true</enableWrapperStyle>
    <enableAsyncMapping>false</enableAsyncMapping>
    <jaxws:bindings node="wsdl:definitions/wsdl:types/xs:schema/xs:complexType[@name='Node']/xs:sequence/xs:element[@name='Type']">
    <jaxb:class name="NodeTypeString"/>
    </jaxws:bindings>    
</jaxws:bindings>

如果我不使用bindings.xml,我在通过wsimport生成java类时会出现以下错误

[ERROR] Two declarations cause a collision in the ObjectFactory class.
  line 1 of https://abcserver.com/v2/two-way-ssl/MyService.svc?xsd=xsd3

[ERROR] (Related to above error) This is the other declaration.
  line 1 of https://abcserver.com/v2/two-way-ssl/MyService.svc?xsd=xsd3

Schema抱怨下面的内容

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:tns="http://schemas.datacontract.org/2004/07/ABCUser.Web.ServiceModels" elementFormDefault="qualified" targetNamespace="http://schemas.datacontract.org/2004/07/ABCUser.Web.ServiceModels">
<xs:import schemaLocation="https://abcserver.com/v2/two-way-ssl/MyService.svc?xsd=xsd6" namespace="http://schemas.microsoft.com/2003/10/Serialization/Arrays"/>
.......
<xs:complexType name="Node">
<xs:sequence>
<xs:element minOccurs="0" name="Description" nillable="true" type="xs:string"/>
<xs:element minOccurs="0" name="Name" nillable="true" type="xs:string"/>
<xs:element minOccurs="0" name="Type" nillable="true" type="xs:string"/>
<xs:element minOccurs="0" name="Users" nillable="true" type="tns:ArrayOfUser"/>
</xs:sequence>
</xs:complexType>
<xs:element name="Node" nillable="true" type="tns:Node"/>
......

但是现在当我使用bindings.xml时,我收到以下错误

[ERROR] XPath evaluation of "wsdl:definitions/wsdl:types/xs:schema/xs:complexType[@name='Node']/xs:sequence/xs:element[@name='Type']" results in an empty target node
  line 8 of file:/E:/projects/codegeneration/bindings.xml

我错过了什么?我正在使用wsimport生成类。

2 个答案:

答案 0 :(得分:2)

<xsd:import>实际上并未更改WSDL文件的XML文档树。您的元素与wsdl:definitions/wsdl:types/xs:schema/xs:import匹配,而不是wsdl:definitions/wsdl:types/xs:schema/xs:complexType/xs:sequence/xs:element

JAX-WS规范的“自定义”章节说:

  

此外,jaxb:bindings可能作为jaxws:bindings元素的子元素出现在JAX-WS外部绑定文件中,其node属性指向WSDL中的xs:schema元素文献。处理模式时,结果必须好像jaxb:bindings元素在模式文档中作为模式组件的注释内联。

     

在为WSDL文档中嵌入的模式文档处理JAXB绑定声明(即jaxb:bindings元素)时,出现在其中的所有XPath表达式必须被解释为包含xs:schema元素是独立模式文档的根。

因此,您的内部jaxws:bindings元素必须包含xs:schema元素的XPath,而不是其任何后代:

<jaxws:bindings node="wsdl:definitions/wsdl:types/xs:schema">
    <jaxb:bindings node="xs:complexType[@name='Node']/xs:sequence/xs:element[@name='Type']">
        <jaxb:class name="NodeTypeString"/>
    </jaxb:bindings>
</jaxws:bindings>    

我不确定上述内容是否真的适用于使用<xsd:import>的架构。您可能必须明确引用导入的模式:

<jaxws:bindings node="wsdl:definitions/wsdl:types/xs:schema">
    <jaxb:bindings schemaLocation="https://abcserver.com/v2/two-way-ssl/MyService.svc?xsd=xsd2">
        <jaxb:bindings node="xs:complexType[@name='Node']/xs:sequence/xs:element[@name='Type']">
            <jaxb:class name="NodeTypeString"/>
        </jaxb:bindings>
    </jaxb:bindings>
</jaxws:bindings>    

答案 1 :(得分:1)

我遇到了这个问题的两个解决方案。

  1. 我通过在其中添加导入的模式并删除import语句来简化wsdl模式。
  2. 首先使用xjc为导入的架构

    构建一集

    xjc -episode myschema.episode myschema.xsd

    然后通过wsimport

    将该剧集用作java类生成中的绑定

    wsimport mywsdl.wsdl -b myschema.episode

  3. 有关第二个解决方案的更多信息here