2

我在获取消息入站属性时遇到问题，不知何故它为空，这里是代码：

<scripting:transformer name="noopLoggingTransformer">
    <scripting:script engine="groovy">
        log.info "${message.getInboundProperty('user-agent')}"
        muleContext.client.dispatch('vm://log-request.in', message)
        message
     </scripting:script>
</scripting:transformer>

<pattern:web-service-proxy name="service" transformer-refs="noopLoggingTransformer" inboundAddress="${serverName}/services/Logradouros/LogradouroServico" outboundAddress="${targetServer}/servicos/v2/service.svc" wsdlFile="LogradouroServicos.wsdl">
</pattern:web-service-proxy>

<jdbc-ee:postgresql-data-source name="WSA" user="${database.user}" password="${database.pass}" url="${database.url}" transactionIsolation="UNSPECIFIED" doc:name="PostgreSQL Data Source">
</jdbc-ee:postgresql-data-source>

<jdbc-ee:connector name="jdbcConnector" dataSource-ref="WSA" validateConnections="false" transactionPerMessage="true" queryTimeout="10" pollingFrequency="10000" doc:name="JDBC"> 
    <jdbc-ee:query key="wsadb" value="insert into inbound_messages (payload, timestamp, agent, ip_from, endpoint, soap_operation) values ('', now(), #[groovy: return message.getInboundProperty('user-agent').toString()], #[groovy: return message.getInboundProperty('MULE_REMOTE_CLIENT_ADDRESS').toString()], #[groovy: return message.getInboundProperty('http.request').toString()], '');"></jdbc-ee:query>  
</jdbc-ee:connector>

<flow name="log-request" doc:name="log-request"> 
    <vm:inbound-endpoint path="log-request.in" />
    <logger message="#[message.inboundProperties['user-agent']]" level="INFO" doc:name="Logger"/>
    <jdbc-ee:outbound-endpoint exchange-pattern="one-way" queryKey="wsadb" responseTimeout="10000" queryTimeout="-1" connector-ref="jdbcConnector" doc:name="Persist raw message" />
</flow>

它打印出来的是“null”，我不知道如何让它从消息中打印属性......

4

2 回答 2

9

无需使用 Groovy：

<logger message="#[message.inboundProperties['user-agent']]" level="INFO" doc:name="Logger"/>

但是您更大的问题是您没有在分派到之前将入站属性传播到出站范围vm://log-request.in。

您需要传播要继承的属性：

<scripting:transformer name="noopLoggingTransformer">
    <scripting:script engine="groovy">
        def props = [:]
        props['User-Agent'] = message.getProperty('User-Agent', org.mule.api.transport.PropertyScope.INBOUND)
        muleContext.client.dispatch('vm://log-request.in', payload, props)
        message
     </scripting:script>
</scripting:transformer>

当然，您可以迭代入站属性名称以将它们全部复制。

于 2013-10-11T18:02:33.047 回答
1

属性名称是User-Agent，正如大卫指出的那样，#message.inboundProperties['User-Agent']]是MEL获取它的方法。

您是否确保在尝试访问时User-Agent设置了属性。mule message它并不总是在那里

请记住inbound，除非您手动复制属性，否则不会传播属性

<copy-properties propertyName="*"/>

于 2013-10-11T18:28:39.923 回答