修改token判断

xx-summit/xx-summit-server/src/main/java/com/xxfc/platform/summit/service/AccessTokenService.java

@@ -54,7 +54,7 @@ public class AccessTokenService {
 		{
 			JSONObject  obj = JSONObject.parseObject(accessTokenRedis).getJSONObject(wy_appid);
 			AccessToken accessToken = new AccessToken(obj.getString("json"),obj.getString("accessToken"),obj.getInteger("expiresIn"),obj.getLong("expiredTime"));
-			if(accessToken.isAvailable()){
+			if(null != accessToken  && accessToken.isAvailable()){
 				return accessToken;
 			}
 			summbitRedisTemplate.delete(wy_appid);