复杂Mule XPath表达式抛出异常

我想在Mule中运行XPath表达式。它给了我一个又一个的错误。有人可以帮助我纠正这些骡子XPath表达式：复杂Mule XPath表达式抛出异常

<xm:namespace-manager includeConfigNamespaces="true"> 
     <xm:namespace prefix="acord" uri="ACORD.org/Standards/Life/2" /> 
     <xm:namespace prefix="soap" uri="schemas.xmlsoap.org/soap/envelope/" /> 
    </xm:namespace-manager> 

    <set-variable variableName="pwaHolding" 
     value="#[xpath('//acord:TXLife/acord:TXLifeRequest/acord:OLifE/acord:Relation[acord:RelationRoleCode/@tc = '37']/@OriginatingObjectID').value" /> 
    <set-variable variableName="pwaPolNumber" 
     value="#[xpath('//acord:TXLife/acord:TXLifeRequest/acord:OLifE/acord:Holding[@id=$pwaHolding]/acord:Policy/acord:PolNumber').text]" />

试图执行上述XPATH表达式时，我得到异常下面：

Message :Execution of the expression "xpath('//acord:TXLife/acord:TXLifeRequest/acord:OLifE/acord:Relation[acord:RelationRoleCode/@tc == '37']/@OriginatingObjectID').value" failed. (org.mule.api.expression.ExpressionRuntimeException). Message payload is of type: String 
    Code     : MULE_ERROR--2 
    -------------------------------------------------------------------------------- 
    Exception stack is: 
    1. [Error: unexpected token: 37] 
    [Near : {... @tc == '37']/@OriginatingObjec ....}] 
           ^
    [Line: 1, Column: 96] (org. 

mvel2.CompileException) 
org.mvel2.compiler.ExpressionCompiler:247 (null) 
2. Execution of the expression "xpath('//acord:TXLife/acord:TXLifeRequest/acord:OLifE/acord:Relation[acord:RelationRoleCode/@tc == '37']/@OriginatingObjectID').value" failed. (org.mule.api.expression.ExpressionRuntimeException) 
org.mule.el.mvel.MVELExpressionLanguage:211 (http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/api/expression/ExpressionRuntimeException.html) 
3. Execution of the expression "xpath('//acord:TXLife/acord:TXLifeRequest/acord:OLifE/acord:Relation[acord:RelationRoleCode/@tc == '37']/@OriginatingObjectID').value" failed. (org.mule.api.expression.ExpressionRuntimeException). Message payload is of type: String (org.mule.api.transformer.TransformerMessagingException) 
org.mule.transformer.AbstractTransformer:123 (http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/api/transformer/TransformerMessagingException.html) 
-------------------------------------------------------------------------------- 
Root Exception stack trace: 
[Error: unexpected token: 37] 
[Near : {... @tc == '37']/@OriginatingObjec ....}]       ^
[Line: 1, Column: 96] 
at org.mvel2.compiler.ExpressionCompiler._compile(ExpressionCompiler.java:247) 
at org.mvel2.util.ParseTools.subCompileExpression(ParseTools.java:1944) 
at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:862) 
+ 3 more (set debug level logging or '-Dmule.verbose.exceptions=true' for everything)

嗨大卫，

我甚至取代'后与"我仍然收到以下错误：

 
Message    : Execution of the expression "xpath('//acord:TXLife/acord:TXLifeRequest/acord:OLifE/acord:Relation[acord:RelationRoleCode/@tc == '37']/@OriginatingObjectID').value" failed. (org.mule.api.expression.ExpressionRuntimeException). Message payload is of type: String 
Code     : MULE_ERROR--2 
-------------------------------------------------------------------------------- 
Exception stack is: 
1. [Error: unexpected token: 37] 
[Near : {... @tc == '37']/@OriginatingObjec ....}] 
        ^
[Line: 1, Column: 96] (org.mvel2.CompileException) 
    org.mvel2.compiler.ExpressionCompiler:247 (null) 
2. Execution of the expression "xpath('//acord:TXLife/acord:TXLifeRequest/acord:OLifE/acord:Relation[acord:RelationRoleCode/@tc == '37']/@OriginatingObjectID').value" failed. (org.mule.api.expression.ExpressionRuntimeException) 
    org.mule.el.mvel.MVELExpressionLanguage:211 (http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/api/expression/ExpressionRuntimeException.html) 
3. Execution of the expression "xpath('//acord:TXLife/acord:TXLifeRequest/acord:OLifE/acord:Relation[acord:RelationRoleCode/@tc == '37']/@OriginatingObjectID').value" failed. (org.mule.api.expression.ExpressionRuntimeException). Message payload is of type: String (org.mule.api.transformer.TransformerMessagingException) 
    org.mule.transformer.AbstractTransformer:123 (http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/api/transformer/TransformerMessagingException.html)

我有我的第二个XPATH表达式，这也是失败的。请帮我解决这个问题，以及

来源

2013-07-24 user2324686

您是否配置了命名空间管理？什么错误？ Mule版本？ –

嗨大卫，我使用Mule 3.3.1，并已配置名称空间管理器如下： \t \t \t \t \t – user2324686

我编辑了您的问题以添加此信息，请执行相同的操作并添加您在问题中收到的错误。 –

这个错误来自您使用'分隔的字符串，它不能正常工作内'的事实。例如，在下面的表达式中的问题是围绕'37'：

value="#[xpath('//acord:TXLife/acord:TXLifeRequest/acord:OLifE/acord:Relation[acord:RelationRoleCode/@tc = '37']/@OriginatingObjectID').value" />

另一个问题是，闭合]在所述MEL表达的末端缺失。

尝试：

value="#[xpath(&quot;//acord:TXLife/acord:TXLifeRequest/acord:OLifE/acord:Relation[acord:RelationRoleCode/@tc = '37']/@OriginatingObjectID&quot;).value" />

看你的第二个XPath，我看到[@id=$pwaHolding]。我假设在这一点上，您正试图使用第一个XPath提取的流变量pwaHolding。由于MVEL没有字符串插值，这将不起作用。您需要改用串联和，顺便说一下，不要忘了单引号值@id相比：

[@id‌='&quot; + pwaHolding + &quot;']

来源

2013-07-25 18:38:05

嗨大卫，我仍然得到例外。。 – user2324686

我看到，另一个问题是在MEL表达式末尾缺少结尾']'。有了这个固定的，XPath表达式对我来说工作得很好。 –

感谢David第一个XPATH表达式现在对我来说工作正常。请看看第二个XPATH表达式。这也是失败的。 – user2324686

复杂Mule XPath表达式抛出异常

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