There is no Action mapped for namespace / and action name Forum 好纠结的错误！

没事写个发帖的bbs，结果一连串的错误，纠结加郁闷啊；求指点...
我贴出我的一部分代码：
[color=red]JSP代码:[/color]

[color=red]ForumAction代码：[/color]
public class ForumAction extends ActionSupport{

private static final long serialVersionUID = -1512730658595600926L;

private Bbs b;
private List<Bbs> bbs ;
private String name;//发表文章的人
private String title;
private String content;
private String text;

//发表文章
public String insert() throws Exception {
    BbsDao bbsdao = new BbsDao();
    bbsdao.save(name,title,content);
    text = "bbs发表成功";
    return "insert";
}

set,get 省略...

[color=red]struts.xml代码：[/color]

<!-- 发表文章 -->


/message.jsp


[color=red]message.jsp代码：[/color]

${text}

[color=red]报的错误是[/color][/u][/b]：[[/i]http-8080-2] WARN [org.apache.struts2.dispatcher.Dispatcher] - Could not find action or result
There is no Action mapped for namespace / and action name Forum. - [unknown location]
网上找了好多解决办法都不行？？？

就是代表你那个url要提交的action名称

改成这样

[code="xml"]
/message.jsp
[/code]