阅读背景：

谁能不能给我用通俗的语言讲解一下拦截器啊？

来源：互联网 
看书看不懂，只好花分数来请教

struts2里面struts.xml这个配置文件，里面这个拦截器到底怎么理解，能不能用通俗易懂的语言 struts2里面struts.xml这个配置文件，


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