codefirst mvc Self referencing loop detected for property

登录时，json序列化用户类时提示错误“Self referencing loop detected for property……”，经过5个小时的查找，发现原因可能是，用户类包含了其他类的导航属性（codefirst中用到）导致序列化时出现的循环引用错误

解决办法：将用户类投影到新的表中即可。如下：

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

var user = ubll.GetList(u => u.LoginName == userName && u.Password == pwd).Select(u => new             {                 u.ID,                 u.LoginName,                 u.Password,                 u.Role,                 u.Tel,                 u.UserName,                 u.DelFlag,                 u.Email,                 u.Gender,                 u.CompanyID,                 u.Address,                 u.CreateDataTime             }).FirstOrDefault();      string UserData = SerializeHelper.Instance.ToJson(user);//序列化用户实体