The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path

完整錯誤信息：

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Description Resource Path Location Type

The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path add.jsp /dwz-java/WebContent/WEB-INF/jsp/management/news line 1 JSP Problem

在出現此錯誤的項目上單擊鼠標右鍵》Build Path》Configure Build Path