1.定義struts2攔截器（網(wǎng)上例子很多）

代碼如下：

package rt.intercepter;import java.util.Map;import javax.servlet.http.HttpServletRequest;import rt.pojo.UserInfo;import rt.util.Struts2Utils;import com.opensymphony.xwork2.Action;import com.opensymphony.xwork2.ActionInvocation;import com.opensymphony.xwork2.interceptor.AbstractInterceptor;public class LoginValidate extends AbstractInterceptor {    /**     *      */    PRivate static final long serialVersionUID = 1L;    @Override    public String intercept(ActionInvocation invocation) throws Exception {        System.out.println("interceptor intercept");         Map<String, Object> session = invocation.getInvocationContext().getSession();        UserInfo userInfo = (UserInfo) session.get("userInfo");        HttpServletRequest request = Struts2Utils.getRequest();        if ("xmlHttpRequest".equalsIgnoreCase(request.getHeader("X-Requested-With")) || request.getParameter("ajax") != null) {            if(null == Struts2Utils.getSession() || null == userInfo){                Struts2Utils.getResponse().getWriter().write("{/"statusCode/":/"301/", /"message/":/"會(huì)話已過期!請(qǐng)重新登錄!/"}");                return null;            }          }        return invocation.invoke();    }}

2、配置攔截器

<!-- 用于CRUD Action的parent package -->    <package name="crud-default" extends="convention-default">        <!-- 基于paramsPrepareParamsStack,            增加store interceptor保證actionMessage在redirect后不會(huì)丟失 -->        <interceptors>        <span style="color: #ff0000;"><interceptor name="sessionout" class="rt.intercepter.LoginValidate" /></span> <interceptor-stack name="crudStack"> <interceptor-ref name="timer"/> <interceptor-ref name="logger"/> <interceptor-ref name="store"> <param name="OperationMode">AUTOMATIC</param> </interceptor-ref> <interceptor-ref name="paramsPrepareParamsStack" /> <span style="color: #ff0000;"><interceptor-ref name="sessionout"/></span> </interceptor-stack> </interceptors> <default-interceptor-ref name="crudStack" /> </package>

3.測(cè)試：

登錄后，等一分鐘，點(diǎn)擊出現(xiàn)登錄超時(shí)，并跳轉(zhuǎn)到了登錄頁面。

如果想session超時(shí)之后設(shè)置頁面不跳轉(zhuǎn)，而是彈出框登錄，請(qǐng)?jiān)赿wz的初始化頁面內(nèi)修改：

<script type="text/Javascript">        $(function(){            DWZ.init("dwz.frag.xml", {                loginUrl:"login_dialog.html", loginTitle:"登錄",    // 彈出登錄對(duì)話框                //loginUrl:"login.jsp",    // 跳到登錄頁面                statusCode:{ok:200, error:300, timeout:301}, //【可選】                keys: {statusCode:"statusCode", message:"message"}, //【可選】                pageInfo:{pageNum:"pageNum", numPerPage:"numPerPage", orderField:"orderField", orderDirection:"orderDirection"}, //【可選】                debug:false,    // 調(diào)試模式 【true|false】                callback:function(){                    initEnv();                    $("#themeList").theme({themeBase:"themes"});                    setTimeout(function() {$("#sidebar .toggleCollapse div").trigger("click");}, 10);                }            });        });                </script>

這樣就完成了，希望能給大家?guī)韼椭?