我的XML字段中有一段HTML的源码（由于要生成XML格式，所以相关格式字符都转义了），使用XSL提取之后该源码还是源码的状态，不能正常按照原有的格式显示，请问：这是怎么回事？如何解决呢？

Markup languages have been around since 1969, when three IBM researchers created the Generalized Markup Language. That was the grandfather of Hypertext Markup Language (HTML), which makes the Web work ...

In just a few years, XML’s importance to Java developers has grown by leaps and bounds, especially with Web services on the scene. XML, however, is an evolving technology with numerous subtechnologies ...