HTTP Status 404 - There is no Action mapped for namespace [/] and action name [helloworld] associated with context path [/HelloWorld].
type Status report
message There is no Action mapped for namespace [/] and action name [helloworld] associated with context path [/HelloWorld].
description The requested resource is not available.
大家好，具体看配置文件是否存在编写错误，404代表没有找到相应的类。
我的也是这个问题，完全按照老师的做的
There is no Action mapped for namespace [/] and action name [helloworld]
没有映射， 用的什么框架？看下配置。
HTTP404是指找不到网页...你看是不是跳转代码没写好