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我想在使用拦截器的我的struts2应用程序中处理会话超时请求。下面是与此相关的文件：Struts2使用拦截器处理会话超时
web.xml中：
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<session-config>
<session-timeout>1</session-timeout>
</session-config>
struts.xml中：
<package name="default" extends="struts-default">
<interceptors>
<interceptor name="sessionInterceptor"
class="com.platform.web.security.SessionInterceptor" />
</interceptors>
<action name="doLogin"
class="com.platform.web.action.LoginAction">
<result name="input">/login/login.jsp</result>
<result name="error">/login/login.jsp</result>
<result type="chain">menuAction</result>
</action>
<action name="menuAction"
class="com.platform.web.action.MenuAction">
<interceptor-ref name="sessionInterceptor"/> //Interceptor included here
<result name="SUCCESS">/jsp/main.jsp</result>
<result name="ERROR">/login/login.jsp</result>
<result name="input">/jsp/myFavourite.jsp</result>
</action>
拦截器类：
public class SessionInterceptor extends AbstractInterceptor implements StrutsStatics {
/**
*
*/
private static final long serialVersionUID = 1L;
@Override
public String intercept(ActionInvocation invocation) throws Exception {
final ActionContext context = invocation.getInvocationContext();
HttpServletRequest request = (HttpServletRequest) context
.get(HTTP_REQUEST);
HttpSession session = request.getSession(false);
// Is there a "user" object stored in the user's HttpSession?
//Object user = session.getAttribute("User");
if (session == null) {
// The user has not logged in yet.
// Is the user attempting to log in right now?
//String loginAttempt = request.getParameter(LOGIN_ATTEMPT);
/* The user is attempting to log in. */
/*if (!StringUtils.isBlank(loginAttempt)) {
return invocation.invoke();
}*/
return "timeout";
} else {
return invocation.invoke();
}
}
}
的LoginAction：
public class LoginAction extends MesActionSupport implements ServletRequestAware {
@Override
public String execute() throws Exception {
setActionNameForAudit("execute123");
FILE_LOGGER.debug("Entering into execute() ... ");
String strSessionId = "";
if (isValidUser == true) {
user = getUser();
strSessionId = request.getSession(true).getId();
setServletRequest(request);
session.put("SessionId", strSessionId);
setSession(session, user);
ServletActionContext.getRequest().getSession().setAttribute("User", user);
FILE_LOGGER.debug("Exit from LoginAction.execute() ... ");
return SUCCESS;
} else {
return ERROR;
}
}
MenuAction：
public class MenuAction extends MesActionSupport implements SessionAware, ParameterAware, RequestAware {
@Override
public String execute() throws Exception {
setActionNameForAudit("execute ");
User user = null; // To store current user
Map<String, ArrayList<String>> category = null; // To store all Menu
// Categories.
StringBuffer menu = new StringBuffer(""); // To store Menu String
StringBuffer dashboardMenu = new StringBuffer("");
// user = (User)(request.getSession().getAttribute("User")==null ? null : request.getSession().getAttribute("User")); //Request object IS NULL HERE!!
user = (User) (mapSession.get("User") == null ? null : mapSession
.get("User")); // mapSession object IS NULL HERE
FILE_LOGGER.debug("user is " + user == null);
if (user != null) {
menu = menuView.getMenu(user);
mapSession.put("Menu", menu.toString());
mapSession.put("dbMenu", dashboardMenu.toString());
ret = "SUCCESS";
} else if (user == null) {
ret = ERROR;
} else {
ret = SUCCESS;
}
return ret;
}
流程是这样的：1。 登录屏幕打开 2.用户输入凭据并提交 3的LoginAction被调用，用户被认证 4.如果有效的用户 - MenuAction被调用。否则重定向到Login.jsp
根据上面的代码，会话在LoginAction中创建，控件到达会话对象被检查的Interceptor。如果会话存在，控件到达MenuAction。
但是，当发生这种情况时，request对象被重置为NULL！之前当我没有使用拦截器时，流程在LoginAction和MenuAction之间完全正常工作。
拦截器是否重置HTTPRequest？因此会议？结果我无法继续。
任何帮助？
挖掘彻底！ – chad
@chad我生气了：/ –
+1如果可以，我会给它另一个upvote，因为它也很有趣。显示出很多动机可以从恼人的程序员中走出来！加入黑暗的一面。 – Quaternion