今天將以前做的一個web項目從不筆記本上移到台式機上，import項目后出現“The method setCharacterEncoding(String) is undefined for the type HttpServle”，導入tomcat下的lib包問題依舊。后來將lib包在Order and Export中的位置上調（如下圖）就可以了。可能是servlet包沖突導致。
----除了是jar位置，也可能是jar重復導致。
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