package fields is analysised by config file.field is defined in config file.

hi!I need wireshark dissect captured packages by a config file. When wireshark started,the config file will be loaded to wireshark,and the captured package will be dissected by the fields name defined in xml file. Every displayed field is defined in xml files,so every field is configurable .Could you help me? Give me an example.Thank you very much!!! chinese is :我想通过XML配置文件的方式来解析wireshark所抓到的数据包。也就是说，我把消息字段配置到XML文件中，在抓包的过程中根据XML配置字段动态地解析数据包，不知道是否可行？如果可以，你们那边可以给我一个示例吗？非常感谢各位大侠！