dwz ajax session超时跳转登录页(struts2自定义拦截器)

9/6/2015来源:Java教程人气:1206

dwz Ajax session超时跳转登录页(struts2自定义拦截器)

1.定义struts2拦截器(网上例子很多)

代码如下:

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\":\"会话已过期!请重新登录!\"}");                return null;            }          }        return invocation.invoke();    }}

2、配置拦截器

<!-- 用于CRUD Action的parent package -->    <package name="crud-default" extends="convention-default">        <!-- 基于paramsPrepareParamsStack,            增加store interceptor保证actionMessage在redirect后不会丢失 -->        <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.测试:

登录后,等一分钟,点击出现登录超时,并跳转到了登录页面。

如果想session超时之后设置页面不跳转,而是弹出框登录,请在dwz的初始化页面内修改:

<script type="text/Javascript">        $(function(){            DWZ.init("dwz.frag.xml", {                loginUrl:"login_dialog.html", loginTitle:"登录",    // 弹出登录对话框                //loginUrl:"login.jsp",    // 跳到登录页面                statusCode:{ok:200, error:300, timeout:301}, //【可选】                keys: {statusCode:"statusCode", message:"message"}, //【可选】                pageInfo:{pageNum:"pageNum", numPerPage:"numPerPage", orderField:"orderField", orderDirection:"orderDirection"}, //【可选】                debug:false,    // 调试模式 【true|false】                callback:function(){                    initEnv();                    $("#themeList").theme({themeBase:"themes"});                    setTimeout(function() {$("#sidebar .toggleCollapse div").trigger("click");}, 10);                }            });        });                </script>

这样就完成了,希望能给大家带来帮助.