XMLUnit is a library that supports testing XML output in several ways. XMLUnit 2.x is a complete rewrite of XMLUnit and actually doesn't share any code with XMLUnit for Java 1.x. Some goals for ...

2、 Map接口存储的是键值对，无法直接通过Iterator或foreach进行遍历输出，需先转换为相应的集合视图才能迭代访问其中的元素。