如何傳遞會話變量作爲mule中rollback-exception-strategy組件中maxRedeliveryAttempts字段的參數？

下面是Mule配置XML。如何傳遞會話變量作爲mule中rollback-exception-strategy組件中maxRedeliveryAttempts字段的參數？

<http:listener-config name="HTTP_Listener_Configuration" host="localhost" port="8090" doc:name="HTTP Listener Configuration"/> 
<flow name="testflowFlow"> 
    <http:listener config-ref="HTTP_Listener_Configuration" path="/test" doc:name="HTTP"/> 
    <set-session-variable variableName="count" value="#[message.inboundProperties.'http.query.params'.retrycount]" doc:name="count Session Variable"/> 
    <set-payload value="#[sessionVars.count]" doc:name="Set Payload"/> 
    <file:outbound-endpoint path="C:\Users\y0134079\Desktop" responseTimeout="10000" doc:name="File"/> 
    <set-payload value="#[sessionVars.count]" doc:name="Set Payload"/> 
    <rollback-exception-strategy maxRedeliveryAttempts="#[sessionVars.count]" doc:name="Rollback Exception Strategy"/> 
</flow>

我試圖傳遞的最大重試次數的查詢參數（RetryCount重）在HTTP請求中的一個嘗試。但maxredeliveryattempts字段期望一個整數，並且所提供的查詢參數是構建失敗的字符串，因爲它不能從字符串轉換爲整數。對此有何建議？

錯誤：

*****所致：org.springframework.beans.TypeMismatchException：無法屬性值 'java.lang.String中' 轉換類型的所需類型 'java.lang.Integer中'屬性'maxRedeliveryAttempts';嵌套異常是java.lang.NumberFormatException：對於輸入字符串：「[sessionVars.count]」 at org.springframework.beans.BeanWrapperImpl.convertIfNecessary（BeanWrapperImpl.java:468）〜[spring-beans-3.2.10.RELEASE。 jar：3.2.10.RELEASE] ***** at org.springframework.beans.BeanWrapperImpl.convertForProperty（BeanWrapperImpl.java:494）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE ] at org.springframework.beans.BeanWrapperImpl.convertForProperty（BeanWrapperImpl.java:488）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.factory.support .AbstractAutowireCapableBeanFactory.convertForProperty（AbstractAutowireCapableBeanFactory.java:1464）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues（AbstractAutowireCapabl eBeanFactory.java:1423）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean（AbstractAutowireCapableBeanFactory.java:1159）〜[ spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:519）〜[spring-beans-3.2.10。 RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:458）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10。發佈] at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean（BeanDefinitionValueResolver.java:276）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframewo rg.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary（BeanDefinitionValueResolver.java:129）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.factory.support。 AbstractAutowireCapableBeanFactory.applyPropertyValues（AbstractAutowireCapableBeanFactory.java:1418）〜[彈簧豆-3.2.10.RELEASE.jar：3.2.10.RELEASE] 在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean（AbstractAutowireCapableBeanFactory.java： 1159）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:519）〜[spring-beans- 3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java ：458）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory $ 1.getObject（AbstractBeanFactory.java:293）〜[spring- beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:223）〜[spring-beans-3.2.10.RELEASE。 jar：3.2.10.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:290）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10。RELEASE] at org.springframework。org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:191）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] 。 beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons（DefaultListableBeanFactory.java:633）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization（ AbstractApplicationContext.java:932）〜[spring-context-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:479）〜[spring- context-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.mule.config.spring.SpringRegistry.doInitialise（SpringRegistry.java:86）〜[mule-module-spring-config-3.6.1。罐子：3.6.1] at org.mule.registry.AbstractRegistry.initialise（AbstractRegistry.java:105）〜[mule-core-3.6.1.jar：3.6.1] at org.mule.config.spring.SpringXmlConfigurationBuilder.createSpringRegistry（SpringXmlConfigurationBuilder。 java：135）〜[mule-module-spring-config-3.6.1.jar：3.6.1] at org.mule.config.spring.SpringXmlConfigurationBuilder.doConfigure（SpringXmlConfigurationBuilder.java:90）〜[mule-module- spring-config-3.6.1.jar：3.6.1] at org.mule.config.builders.AbstractConfigurationBuilder.configure（AbstractConfigurationBuilder.java:43）〜[mule-core-3.6.1.jar：3.6.1] at org.mule.config.builders.AbstractResourceConfigurationBuilder.configure（AbstractResourceConfigurationBuilder.java:69）〜[mule-core-3.6.1.jar：3.6.1] at org.mule.config.builders.AutoConfigurationBuilder.autoConfigure（ AutoConfigurationBuilder.java:101）〜[mule-core-3 .6.1.jar：3.6.1] at org.mule.config.builders.AutoConfigurationBuilder.doConfigure（AutoConfigurationBuilder.java:52）〜[mule-core-3.6.1.jar：3.6.1] at org.mule .config.builders.AbstractConfigurationBuilder.configure（AbstractConfigurationBuilder.java:43）〜[mule-core-3.6.1.jar：3.6.1] at org.mule.config.builders.AbstractResourceConfigurationBuilder.configure（AbstractResourceConfigurationBuilder.java:69 ）〜[mule-core-3.6.1.jar：3.6.1] at org.mule.context.DefaultMuleContextFactory $ 1.configure（DefaultMuleContextFactory.java:84）〜[mule-core-3.6.1.jar：3.6。 1] at org.mule.context.DefaultMuleContextFactory.doCreateMuleContext（DefaultMuleContextFactory.java:217）〜[mule-core-3.6.1.jar：3.6.1] at org.mule.context.DefaultMuleContextFactory.createMuleContext（DefaultMuleContextFactory。 java：76）〜[mule-core-3.6.1.jar： 3.6.1] at org.mule.module.launcher.application.DefaultMuleApplication.init（DefaultMuleApplication.java:187）〜[mule-module-launcher-3.6.1.jar：3.6.1] ... 14 more 引起：java.lang.NumberFormatException：對於輸入字符串：「[sessionVars.count]」 at java.lang.NumberFormatException.forInputString（NumberFormatException.java:65）〜[？：1.7.0_79] at java.lang .Integer.parseInt（Integer.java:492）〜[？：1.7.0_79] at java.lang.Integer.valueOf（Integer.java:556）〜[？：1.7.0_79] at java.lang.Integer .decode（Integer.java:984）〜[？：1.7.0_79] at org.springframework.util.NumberUtils.parseNumber（NumberUtils.java:155）〜[spring-core-3.2.10.RELEASE.jar：3.2 .10.RELEASE] at org.springframework.beans.propertyeditors.CustomNumberEd itor.setAsText（CustomNumberEditor.java:115）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.TypeConverterDelegate.doConvertTextValue（TypeConverterDelegate.java:455）〜[ spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.TypeConverterDelegate.doConvertValue（TypeConverterDelegate.java:427）〜[spring-beans-3.2.10.RELEASE.jar： 3.2.10.RELEASE] at org.springframework.beans.TypeConverterDelegate.convertIfNecessary（TypeConverterDelegate.java:181）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework。 beans.BeanWrapperImpl.convertIfNecessary（BeanWrapperImpl.java:448）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.BeanWrapperImpl.convertForProperty（BeanWrapperImpl.java:494）〜[彈簧豆-3.2.10.RELEASE.jar：3.2.10。發佈] at org.springframework.beans.BeanWrapperImpl.convertForProperty（BeanWrapperImpl.java:488）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.factory。 support.AbstractAutowireCapableBeanFactory.convertForProperty（AbstractAutowireCapableBeanFactory.java:1464）〜[彈簧豆-3.2.10.RELEASE.jar：3.2.10.RELEASE] 在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues（AbstractAutowireCapableBeanFactory。 java：1423）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean（AbstractAutowireCapableBeanFactory.java:1159）〜[spring- beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutow ireCapableBeanFactory.java:519）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:458）〜[ spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean（BeanDefinitionValueResolver.java:276）〜[spring-beans-3.2.10。 RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary（BeanDefinitionValueResolver.java:129）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10。發佈] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues（AbstractAutowireCapableBeanFactory.java:1418）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.s在org.springframework.beans.factory.support上提供pringframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean（AbstractAutowireCapableBeanFactory.java:1159）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] 。 AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:519）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java： 458）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory $ 1.getObject（AbstractBeanFactory.java:293）〜[spring-beans -3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:223）〜[spring-beans-3.2.10.RELEASE。 jar：3.2.10.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:290）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:191）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.beans。 factory.support.DefaultListableBeanFactory.preInstantiateSingletons（DefaultListableBeanFactory.java:633）〜[spring-beans-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization（AbstractApplicationContext。 java：932）〜[spring-context-3.2.10.RELEASE.jar：3.2.10.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:479）〜[spring-context- 3.2.10.R ELEASE.jar：3.2.10.RELEASE] at org.mule.config.spring.SpringRegistry.doInitialise（SpringRegistry.java:86）〜[mule-module-spring-config-3.6.1.jar：3.6.1] at org.mule.registry.AbstractRegistry.initialise（AbstractRegistry.java:105）〜[mule-core-3.6.1.jar：3.6.1] at org.mule.config.spring.SpringXmlConfigurationBuilder.createSpringRegistry（SpringXmlConfigurationBuilder。 java：135）〜[mule-module-spring-config-3.6.1.jar：3.6.1] at org.mule.config.spring.SpringXmlConfigurationBuilder.doConfigure（SpringXmlConfigurationBuilder.java:90）〜[mule-module- spring-config-3.6.1.jar：3.6.1] at org.mule.config.builders.AbstractConfigurationBuilder.configure（AbstractConfigurationBuilder.java:43）〜[mule-core-3.6.1.jar：3.6.1] at org.mule.config.builders.AbstractResourceConfigurationBuilder。配置（AbstractResourceConfigurationBuilder.java:69）〜[mule-core-3.6.1.jar：3.6.1] at org.mule.config.builders.AutoConfigurationBuilder.autoConfigure（AutoConfigurationBuilder.java:101）〜[mule-core- 3.6.1.jar：3.6.1] at org.mule.config.builders.AutoConfigurationBuilder.doConfigure（AutoConfigurationBuilder.java:52）〜[mule-core-3.6.1.jar：3.6.1] at org。 mule.config.builders.AbstractConfigurationBuilder.configure（AbstractConfigurationBuilder.java:43）〜[mule-core-3.6.1.jar：3.6.1] at org.mule.config.builders.AbstractResourceConfigurationBuilder.configure（AbstractResourceConfigurationBuilder.java： 69）〜[mule-core-3.6.1.jar：3.6.1] at org.mule.context.DefaultMuleContextFactory $ 1.configure（DefaultMuleContextFactory.java:84）〜[mule-core-3.6.1.jar：3.6 .1] at org.mule.context.DefaultMuleContextFactory.doCrea teMuleContext（DefaultMuleContextFactory.java:217）〜[mule-core-3.6.1.jar：3.6.1] at org.mule.context.DefaultMuleContextFactory.createMuleContext（DefaultMuleContextFactory.java:76）〜[mule-core-3.6。 1.jar：3.6.1] at org.mule.module.launcher.application.DefaultMuleApplication.init（DefaultMuleApplication.java:187）〜[mule-module-launcher-3.6.1.jar：3.6.1] 。 .. 14更多 INFO 2016-05-03 08：13：33,029 [main] org.mule.module.launcher.DeploymentDirectoryWatcher： ++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++ +騾踢起來了（每5000ms ）+ ++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++ INFO 2016-05-03 08：13：33,239 [main] org.mule.module.launcher.StartupSummaryDeploymentListener：

- - - DOMAIN + - - * - - + + STATUS - - *
默認*部署階段*

- - - 應用+ - - * - - + DOMAIN + - - * - - + STATUS + - - *
testflow *默認*失敗*

來源

2016-05-03 trilawney

該屬性不支持MEL表達式。它支持彈簧屬性佔位符，但不支持動態MEL表達式。它在初始化而非運行時被評估。

來源

2016-05-03 09:48:49

-2

使用＃[的Integer.parseInt（sessionVars.count）

來源

2016-05-03 07:36:24

仍然面臨同樣的錯誤。由org.springframework.beans.TypeMismatchException導致：未能將類型'java.lang.String'的屬性值轉換爲屬性'maxRedeliveryAttempts'所需的類型'java.lang.Integer';嵌套的異常是java.lang.NumberFormatException：對於輸入字符串：「[Integer.parseInt（sessionVars.count）]」 – trilawney

那麼session.count沒有值。它或者沒有在這裏設置＃[message.inboundProperties.'http.query.params'.retrycount]或者使用＃[Integer.parseInt（sessionVars ['count']）] –

如何傳遞會話變量作爲mule中rollback-exception-strategy組件中maxRedeliveryAttempts字段的參數？

回答

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