简而言之，您很难发现在Struts中有做不成或不支持的事。
In short, you'll be hard pressed to find something you can't do or find support for in Struts.
除非您进行充分的单元测试，否则有时候很难发现这个陷阱。
Unless you are doing full unit testing, this pitfall is sometimes hard to discover.
很难想象有比这更繁琐的工作：当您发现一个特殊元素时就将计数器加1。
You could hardly imagine a more trivial task: increment a counter when you find a special element.
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