处理token为"null"字符串问题

bi-server/src/main/java/com/usoftchina/bi/server/service/dashboard/DashboardsToChartsUtilService.java

@@ -49,7 +49,7 @@ public class DashboardsToChartsUtilService {
     private UserService userService;
 
     public RepEntity getChartsInDash(ChartsToDashInfo chartsToDashInfo, String token) throws SQLException {
-        if (StringUtils.isEmpty(token)) {
+        if (StringUtils.isEmpty(token) || "null".equals(token)) {
             User user = userService.getUserById(chartsToDashInfo.getDashboardCreatorId()).getData();
             LoginInfo loginInfo = new LoginInfo(user.getUserName(), EncryUtil.decryptPassword(user.getPassWord()));
             token = userService.login(loginInfo).getData().getToken();