解决较深路径下重定向到login页面，路径不正确的问题

kanban-auth/src/main/java/com/uas/kanban/filter/SecurityInterceptor.java

@@ -48,7 +48,7 @@ public class SecurityInterceptor extends HandlerInterceptorAdapter {
 		// session 中不存在登陆信息
 		if (resourcePoint == null) {
 			logger.info("No session for path: " + url + " , redirecting to page: login ...");
-			response.sendRedirect("login");
+			response.sendRedirect(contextPath + "/login");
 			return false;
 		}
 		SystemSession.setResourcePoint(resourcePoint);