今天和往常一樣打開項目，竟然報錯problem with class file or dependent class; nested exception is java.lang.NoClassDefFoundError，
查閱了很多資料，有的說是包重復，有的說是web.xml配置重復，有的說是spring配置錯誤，有的說是jar包重復，費了我好長時間。
后來抱着試一試的態度，我把項目clean了一下，然后重新編輯竟然通過了，真是很無語，希望可以幫到大家！
免責聲明！
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