web工程中新建jsp文件提示:The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path

解决方案:

1、右击web工程-》属性或Build Path-》Java Build Path->Libraries-> Add Libray...->Server Runtime -》JBoss 7.1 Runtime

 
2、切换到Java Build Path界面中的Orader and Export，选择

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