请问，为什么一个超链接的action被执行了两次？

HTML code

<a href="competitions/findByUserIdBy.action" target="main">赛事管理</a>

配置文件：

XML code

<action name="findByUserIdBy" class="competitionsAction"            method="findByUserId">            <result name="success">/web/competitions/competition.jsp            </result>            <result name="input">/web/competitions/deleteError.jsp</result>        </action>

action：

Java code

public String findByUserId() throws Exception {        try {            Map session = ActionContext.getContext().getSession();            String ids = session.get("userId").toString();            id = Long.parseLong(ids);            listCompetitions = this.competitionsService.findByUserId(id);        } catch (Exception e) {            e.printStackTrace();            return INPUT;        }        return SUCCESS;    }

执行上面的那个超链接的时候，后台打印出了两条一样的SQL语句。

SQL code

Hibernate:     select        competitio0_.id as id10_,        competitio0_.name as name10_,        competitio0_.startTime as startTime10_,        competitio0_.endTime as endTime10_,        competitio0_.address as address10_,        competitio0_.sponsors as sponsors10_,        competitio0_.organizer as organizer10_,        competitio0_.coOrganizer as coOrgani8_10_,        competitio0_.status as status10_,        competitio0_.remarks as remarks10_,        competitio0_.userId as userId10_     from        sportSys.dbo.competitions competitio0_     where        competitio0_.userId='9'Hibernate:     select        competitio0_.id as id10_,        competitio0_.name as name10_,        competitio0_.startTime as startTime10_,        competitio0_.endTime as endTime10_,        competitio0_.address as address10_,        competitio0_.sponsors as sponsors10_,        competitio0_.organizer as organizer10_,        competitio0_.coOrganizer as coOrgani8_10_,        competitio0_.status as status10_,        competitio0_.remarks as remarks10_,        competitio0_.userId as userId10_     from        sportSys.dbo.competitions competitio0_     where        competitio0_.userId='9'

百思不得其解啊，不知道为啥，

因为，我的一个更新报了如下的错误：很是烦人。我就怀疑是这个两次执行的问题引起的。谢谢~

XML code

a different object with the same identifier value was already associated with the session: [com.yaxing.entity.Competitions#130]; nested exception is org.hibernate.NonUniqueObjectException:

[解决办法]

在hibernate中同一个session里面有了两个相同标识但是是 不同实体时就会出现如标题的错误.

这个异常发生当你用session.load 或 session.get加载一个对象时 而又尝试着
session.update or session.lock 操作此对象

解决：
请不要用session加载对对象当你引用或再次使用该对象

[解决办法]
不同的对象与相同的标识符值已经与会话关联起来

我以前也遇到过，忘记怎么解决了 ⊙⊙b汗
[解决办法]
看看你的DAO层和业务层
[解决办法]
我似乎也被这种执行两次的问题困扰着，等解。
------解决方案--------------------

反正我用hibernate的时候就没顺心过，什么一级缓存啊，二级缓存啊，但是每次进页面后，在刷新啥的，那些sql语句又都执行了，还有救像楼主这样连续来2次都不知道是咋搞的。
[解决办法]
是不是的考虑一下令牌 防刷的问题

一个方法：saveToken(request);

另一个方法： if(isTokenValid(request,true)){

业务操作；

}



[解决办法]
this.getHibernateTemplate().getSessionFactory().getCurrentSession().clear();


执行两次的问题，你可以Debug看看。看到底啥情况~