本人jsp菜鸟，请教代码错误，望高手助攻
1、The hierarchy of the type __2F_ElectFeeManage_2F_WebContent_2F_finance_2F_AddDianFeiStep1_2E_jsp is inconsistent
2、The import java.util.ArrayList cannot be resolved
3、Multiple annotations found at this line:
- cannot be resolved to a type
- No exception of type ServletException can be thrown; an exception type must be a subclass of
Throwable
- String cannot be resolved to a type
- The method getContextPath() from the type HttpServletRequest refers to the missing type String
4、The method getAttribute(String) from the type HttpSession refers to the missing type Object
