Eclipse中index.jsp文件顯示The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build
由錯誤可知，沒有javax.servlet.http.HttpServlet類，此jar包位於Tomact的lib下，如圖： 因此，出現此錯誤的原因是沒有添加Tomact包。右擊web工程->屬性或Build Path->Java Build Path->Libraries，如圖： 可知，Apache Tomcat v9.0 library下並沒有相應的jars包文件，因此會出現找不到javax.
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- 1. The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build
- 2. eclipse中報錯The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path。
- 3. JSP文件報錯The superclass「javax.servlet.http.HttpServlet「 was not found on the Java Build Path
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- 5. jsp文件報錯：The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path
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