Ajax Session失效跳轉登入頁面的方法
阿新 • • 發佈:2019-01-17
在Struts應用中,我們發出的請求都會經過 相應的攔截器進行相關處理,一般都會有一個使用者登入攔截(Session失效攔截);一般請求的話,如果Session失效時,我們會跳到登入頁面,可是如果我們採用AJAX請求時,將會返回登入頁面的HTML程式碼,這肯定不是我們想要的,那麼我們如何解決呢?請看以下步驟:
一、建立攔截器
?12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152 | package com.xxx.planeap.interceptor; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.log4j.Logger; import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionContext; import com.opensymphony.xwork2.ActionInvocation; import com.opensymphony.xwork2.ActionSupport; import com.opensymphony.xwork2.interceptor.AbstractInterceptor; import com.xxx.common.contants.ConstantsKey; import com.xxx.common.contants.SessionKey; import com.xxx.planeap.domain.User; import com.xxx.planeap.security.SecurityContextUtil; /** * * @author Goma [email protected] * @version v1.0 * @since 2012-05-31 * */ public class SecurityInterceptor extends AbstractInterceptor { private static final long serialVersionUID = 1L; private Logger logger = Logger.getLogger(SecurityInterceptor. class ); @Override public String intercept(ActionInvocation invocation) throws Exception { // TODO Auto-generated method stub String className = invocation.getAction().getClass().getName(); String action = className.substring(className.lastIndexOf( "." )+ 1 ,className.length()); String actionName = invocation.getProxy().getActionName(); String result; HttpServletRequest request = ServletActionContext.getRequest(); HttpServletResponse response = ServletActionContext.getResponse(); String type = request.getHeader( "X-Requested-With" ); User user = (User) ActionContext.getContext().getSession().get(SessionKey.CURRENT_USER); if (user == null ) { logger.debug( "SECURITY CHECKED: NEED TO LOGIN" ); if ( "XMLHttpRequest" .equalsIgnoreCase(type)) { // AJAX REQUEST PROCESS response.setHeader( "sessionstatus" , ConstantsKey.MSG_TIME_OUT); result = null ; } else { // NORMAL REQUEST PROCESS result = ActionSupport.LOGIN; } } else { logger.debug( "SECURITY CHECKED: USER HAS LOGINED" ); SecurityContextUtil.setCurrentUser(user); boolean hanPerm = SecurityContextUtil.hasPerm(action, actionName); logger.debug( "SECURITY CHECKED: PERMISSION---" +action+ "." +actionName+ "=" +hanPerm); result = invocation.invoke(); } return result; } } |
二、定義全域性AJAX請求結束處理方法
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