环境:

win7 64bit

eclipse-jee-neon-R-win32-x86_64

apache-tomcat-9.0.0.M15-windows-x64

问题:

新建HelloWorld.jsp,报错

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

Eclipse-JEE&Tomcat9 web报错 "javax.servlet.http.HttpServlet" was not found on the Java Build Path

此时Eclipse的Server已经配置为Tomcat9了,但是发现一个奇怪现象,BuildPath下未能自动加入Tomcat的jar包。

Eclipse-JEE&Tomcat9 web报错 "javax.servlet.http.HttpServlet" was not found on the Java Build Path

解决办法:

1.尝试删除Server Tomcat9,重新添加,无果。

2.参考网上帖子“https://blog.csdn.net/u014691453/article/details/52227743

Config build path-

Eclipse-JEE&Tomcat9 web报错 "javax.servlet.http.HttpServlet" was not found on the Java Build Path

library

Eclipse-JEE&Tomcat9 web报错 "javax.servlet.http.HttpServlet" was not found on the Java Build Path

add library

user library

Eclipse-JEE&Tomcat9 web报错 "javax.servlet.http.HttpServlet" was not found on the Java Build Path

Eclipse-JEE&Tomcat9 web报错 "javax.servlet.http.HttpServlet" was not found on the Java Build Path

-new

Eclipse-JEE&Tomcat9 web报错 "javax.servlet.http.HttpServlet" was not found on the Java Build Path

Eclipse-JEE&Tomcat9 web报错 "javax.servlet.http.HttpServlet" was not found on the Java Build Path

Eclipse-JEE&Tomcat9 web报错 "javax.servlet.http.HttpServlet" was not found on the Java Build Path

-“Add External Jars”

Eclipse-JEE&Tomcat9 web报错 "javax.servlet.http.HttpServlet" was not found on the Java Build Path

,将Tomcat9目录lib文件下的所有jar包添加进来,问题解决。

 

推测原因:

推测Eclipse与Tomcat版本以及64位系统有关系,看到有帖子说添加Tomcat8就未发现上述问题。

 

 

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