C++ tinyxml2解析xml文件【详细代码】

      xml解析，C++的方案很多，本篇介绍tinyxml2的用法，微信PC客户端目测用了tinyxml

     关于tinyxml2与tinyxml的区别，可以去官网看，如下：

     TinyXML-1 or TinyXML-2?

Both parsers:

1. Simple to use with similar APIs.
2. DOM based parser.
3. UTF-8 Unicode support. http://en.wikipedia.org/wiki/UTF-8

Advantages of TinyXML-2

1. The focus of all future dev.
2. Many fewer memory allocation (1/10th to 1/100th), uses less memory (about 40% of TinyXML-1), and faster (~5x on read).
3. No STL requirement.
4. More modern C++, including a proper namespace.
5. Proper and useful handling of whitespace

Advantages of TinyXML-1

1. Can report the location of parsing errors.
2. Support for some C++ STL conventions: stre