Apache Camel Java和XPath

因此，我有一个带有几个命名空间的Web服务，我想通过一个bean路由来执行一些用户凭证检查。自从我使用XPATH以来，它已经很长时间了，所以我可能只是有一个PICNIC（主席不在计算机时出现的问题）错误。Apache Camel Java和XPath

Web服务消息将始终具有以下结构/图案：

<Operation> 
    <header with the head name space where the user credentials are stored> 
    <record control> 
    <objXX> 
</Operation>

下面是一个例子消息（SOAP UI）：

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:list="http://www.insol.irix.com.au/IRIX_V1/Debtors/List" xmlns:head="http://www.insol.irix.com.au/IRIX_V1/Headers" xmlns:rec="http://www.insol.irix.com.au/IRIX_V1/RecordControl"> 
<soapenv:Header/> 
    <soapenv:Body> 
     <list:ListDebtorReq> 
     <head:MsgReqHdr> 
      <head:MsgGUID>${=java.util.UUID.randomUUID()}</head:MsgGUID> 
     <head:MsgDateTime>${=javax.xml.datatype.DatatypeFactory.newInstance().newXMLGregorianCalendar(GregorianCalendar.getInstance())}</head:MsgDateTime> 
     <head:ConsumerSystemIDInfo> 
      <head:ConsumerSystemID>ConsumerSystemID</head:ConsumerSystemID> 
      <head:ConsumerSystemUserID>AgentX</head:ConsumerSystemUserID> 
     </head:ConsumerSystemIDInfo> 
     <head:SecCredInfo> 
      <head:IRIXUserID>Some User ID</head:IRIXUserID> 
      <head:IRIXPassword>Some Password</head:IRIXPassword> 
     </head:SecCredInfo> 
     <head:CryptoInfo> 
      <head:DigitalSignatureInfo> 
       <head:DigitalSignatureValue>verrantque per auras</head:DigitalSignatureValue> 
       <head:DigitalSignatureAlgorithm>SHA-256</head:DigitalSignatureAlgorithm> 
      </head:DigitalSignatureInfo> 
     </head:CryptoInfo> 
    </head:MsgReqHdr> 
    <!--Optional:--> 
    <rec:RecCntrl> 
     <rec:StartRecordNumber>1</rec:StartRecordNumber> 
     <!--Optional:--> 
     <rec:NumberOfRecords>3</rec:NumberOfRecords> 
    </rec:RecCntrl> 
    </list:ListDebtorReq> 
    </soapenv:Body> 
</soapenv:Envelope>

所以基本上我希望能够创造一个能够查询所有用户名和密码数据的MsgReq头的bean。为了简化事情，我只是试图查询MsgGUID并从那里开始工作。不过，我似乎无法得到正确的xpath。由于我使用了几个名称空间，为了确保它们可用，我将它们包含在骆驼上下文文件中。

这里是我的骆驼上下文：

<beans xmlns="http://www.springframework.org/schema/beans" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:camel="http://camel.apache.org/schema/spring" 
    xsi:schemaLocation=" 
    http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
    http://camel.apache.org/schema/spring 
    http://camel.apache.org/schema/spring/camel-spring.xsd"> 
    <import resource="classpath:META-INF/spring/camel-cxf.xml" /> 
    <bean id="SecurityCheckBean" class="au.com.irix.insol.Security.IRIXSecurity"/> 
    <camelContext xmlns="http://camel.apache.org/schema/spring" 
    xmlns:list="http://www.insol.irix.com.au/IRIX_V1/Debtors/List" 
    xmlns:head="http://www.insol.irix.com.au/IRIX_V1/Headers" 
    xmlns:rec="http://www.insol.irix.com.au/IRIX_V1/RecordControl"> 
    <route> 
    <from uri="cxf:bean:DebtorsService?dataFormat=PAYLOAD"/>  
    <bean ref="SecurityCheckBean"/> 
    </route> 
</camelContext> 

</beans>

正如你可以看到我正在运行Web服务生产者的SecurityCheckBean的传入消息。我的SecurityCheckBean目前非常简单，请参阅下面的代码。

public class IRIXSecurity { 



    public void CheckCredentials(


      @XPath("//head:MsgGUID") String msgGUID, 
      @Body String body){ 


     System.out.println(body); 
     System.out.println("Check Credentials Invoked"); 
     System.out.println(msgGUID); 



    } 
}

然而，当我送送通过SOAP UI我得到下面的异常请求：

Invalid xpath: //head:MsgGUID. Reason: javax.xml.xpath.XPathExpressionException: net.sf.saxon.trans.XPathException: Prefix head has not been declared

那么，如何去获取这些信息？为什么即使我已经在我的camel-context.xml中声明了名称空间，它们被报告为失踪？

只是为了兴趣缘故，我已经试过了XPATH的几个变化，如：

@XPath("//MsgGUID") 
@XPath("//MsgReqHdr/head:MsgGUID") 
@XPath("//head:MsgReqHdr/head:MsgGUID")

每次我要么得到一个异常以上或NULL值作为上市...

来源

2013-05-27 Namphibian

权得到了它上班。在处理bean中的名称空间时，必须使用以下语法来包含名称空间。

public class IRIXSecurity { 



    public void CheckCredentials(
      //@Body ListDebtorReqType msgBody, @Headers Map hdr, 

      @XPath(value="//header:MsgGUID",namespaces = @NamespacePrefix(
        prefix = "header", 
        uri = "http://www.insol.irix.com.au/IRIX_V1/Headers")) String msgGUID, 
      @Body Document xml) 
    { 


     System.out.println("Check Credentials Invoked"); 
     System.out.println(msgGUID); 
     //exchange.getOut().setBody(debtorRsType); 





    } 
}

来源

2013-05-27 04:25:52 Namphibian

Apache Camel Java和XPath

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