Libxml2是个C语言的XML程式库，能简单方便的提供对XML文件的各种操作，并且支持XPATH查询，及部分的支持XSLT转换等功能。Libxml2的下载地址是http://xmlsoft.org/ 完全版的库是开源的，并且带有例子程式和说明文件。(Libxml2 is a XML Library of C language. It can provide various operations for XML files simply and conveniently, and supports XPATH query and partial support XSLT conversion. The download address of Libxml2 is the open source of the http://xmlsoft.org/ complete library, with example programs and instructions.)