<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/**"/>
<mvc:exclude-mapping path="/user/login"/> <!-- 不拦截登录请求 -->
<mvc:exclude-mapping path="/user/logout"/> <!-- 不拦截注销请求 -->
<mvc:exclude-mapping path="*.jsp"/>
<mvc:exclude-mapping path="*.html"/>
<mvc:exclude-mapping path="*.js"/>
<mvc:exclude-mapping path="*.css"/>
<bean class="org.huaxin.interceptor.AccessInterceptor"></bean>
</mvc:interceptor>
</mvc:interceptors>
public boolean preHandle(HttpServletRequest request, HttpServletResponse response,
Object obj) throws Exception {
System.out.println("[AccessInterceptor]:preHandle执行");
HttpSession session = request.getSession();
ServletContext application = session.getServletContext();
if(application.getAttribute(session.getId()) == null){ //未登录
PrintWriter out = response.getWriter();
StringBuffer sb = new StringBuffer("<script type=\"text/javascript\" charset=\"UTF-8\">");
sb.append("alert(\"你的账号被挤掉,或者没有登录,或者页面已经过期,请重新登录\")");
sb.append("window.location.href='/user/logout';");
sb.append("</script>");
out.print(sb.toString());
out.close();
return false;
}else{ //已经登录
return true;
}
}