积极答复者
请教 同类型消息 相加?

问题
-
消息ABC是同一个schema架构的,以知A,B了,现在想生成C消息,C为A+B的内容
例如:A:
<InstanceInfo>
<BusinessNo>AAA</BusinessNo>
<ClientTaskID>BBB</ClientTaskID><RouteInfoList>
<RouteInfo>
<RoutedOrder>aaa</RoutedOrder>
<UnitUser>aaa</UnitUser>
</RouteInfo><RouteInfoList>
</InstanceInfo>B:
<InstanceInfo>
<BusinessNo>AAA</BusinessNo>
<ClientTaskID>BBB</ClientTaskID><RouteInfoList>
<RouteInfo>
<RoutedOrder>bbb</RoutedOrder>
<UnitUser>bbb</UnitUser>
</RouteInfo><RouteInfoList>
</InstanceInfo>C:
<InstanceInfo>
<BusinessNo>AAA</BusinessNo>
<ClientTaskID>BBB</ClientTaskID><RouteInfoList>
<RouteInfo>
<RoutedOrder>aaa</RoutedOrder>
<UnitUser>aaa</UnitUser>
</RouteInfo><RouteInfo>
<RoutedOrder>bbb</RoutedOrder>
<UnitUser>bbb</UnitUser>
</RouteInfo><RouteInfoList>
</InstanceInfo>请问如何映射?