程序包javax.servlet不存在

[ERROR] /F:/IJJavaProject/ssm-01/src/main/java/controller/OtherHandler.java:[23,21] 程序包javax.servlet不存在
[ERROR] /F:/IJJavaProject/ssm-01/src/main/java/controller/OtherHandler.java:[24,26] 程序包javax.servlet.http不存在
[ERROR] /F:/IJJavaProject/ssm-01/src/main/java/controller/OtherHandler.java:[25,26] 程序包javax.servlet.http不存在
[ERROR] /F:/IJJavaProject/ssm-01/src/main/java/controller/OtherHandler.java:[56,34] 找不到符号
符号: 类 HttpServletRequest
位置: 类 controller.OtherHandler

 

解决：删掉项目配置的服务器,重新添加