/// <summary>
/// 检查重名检查角色名是否可用
/// </summary>
/// <param name="roleName">角色名</param>
/// <param name="id">角色ID</param>
/// <returns>true:是，false:否</returns>
public JsonResult CheckRoleName(string roleName, int id)
{
RoleBll bll = new RoleBll();
var result = bll.CheckRoleName(roleName, id);
return(Json(result));
}