[每日一学]apache camel|IBMWebsphere MQ header issue|MQRFH2 |MQSTR

Posted 2020-07-02 thinking different

 最近工作中，遇到一个很奇怪的问题：

现象：在camel开发中，通过 IBM Websphere MQ 给assasin 发送xml的message时，会多出<mcd>等这样的header出来

经查：

Being that Camel is using the JMS API to write a message to an MQ queue, MQ will use the RHQ2 header to store information about the message, etc. However, the reading app is a non-JMS app, which cannot read the RFH2 header. We would like to strip the header by utilizing the targetClient=MQ in our put call, but this isn‘t working. We tried targetClient=1 as well

原因是MQ自动加上这些header信息，而client端又无法识别，所以无法读取，出现异常。

解决方案：

在返回给client时，queue加上targetClient=1 ,告诉MQ驱动，不要发送header信息。

 

<route id="qname">
<from uri="amq:queue:qname" />
<transacted ref="requiredJta" />
<to uri="log:com.wellsfargo.1txc?showHeaders=true&amp;showBody=false&amp;multiline=false&amp;level=INFO"/>
<setHeader headerName="CamelJmsDestinationName"><constant>queue:///qname?targetClient=1</constant></setHeader>
<to uri="wmq:queue:qname" />
</route>

 

 

另一种方案：

用这个类配置在jmsConfiguartion类里：

 

https://jira.spring.io/secure/attachment/12688/IBMWebSphereMqDestinationResolver.java

其中代码：private int targetClient = JMSC.MQJMS_CLIENT_JMS_COMPLIANT;

要改成：   private int targetClient = JMSC.MQJMS_CLIENT_NONJMS_MQ;