jquery - Ajax获取返回ERR_SPDY_PROTOCOL_ERROR

Question

我正在 AspNetCore 中开发一个 Web 应用程序，并尝试通过 ajax 调用从我的 Controller 获取数据。

这是我的 API:

[HttpGet]
    public async Task<IActionResult> GetPackWithAllCards(int? packId)
    {
        if (packId == null)
        {
            return Json("An error has occured");
        }
        else
        {
            var pack = await _context.Packs
            .Include(p => p.TagPacks)
            .ThenInclude(tp => tp.Tag)
            .Include(p => p.CardPacks)
            .ThenInclude(cp => cp.Card)
            .ThenInclude(c => c.FaceCards)
            .ThenInclude(fc => fc.Face)
            .ThenInclude(fc => fc.Template)
            .Include(p => p.CardPacks)
            .ThenInclude(cp => cp.Card.FaceCards)
            .ThenInclude(fc => fc.Face.Image)
            .Include(p => p.CardPacks)
            .ThenInclude(cp => cp.Card.FaceCards)
            .ThenInclude(fc => fc.Face.Sound)
            .SingleOrDefaultAsync(m => m.PackId == packId);
            if (pack == null)
            {
                return Json("An error has occured");
            }
            return Ok(pack);
        }
    }

和我的ajax调用:

$.get("/pack/GetPackWithAllCards", { packId: pack.packId }, function (pack) {
        alert(pack);
});

我的错误总是相同的，我收到“无法加载资源:net::ERR_SPDY_PROTOCOL_ERROR”，状态 = 0

我的 api 正确返回一个包，但我的 ajax 调用没有得到它。

Answer 1

这是 JSON 序列化中的错误。请参阅此处的文档 https://learn.microsoft.com/en-us/ef/core/querying/related-data#related-data-and-serialization

基于github:https://github.com/aspnet/EntityFrameworkCore/issues/9573 。我发现它只能部分解决我的问题。删除模型中不必要的引用解决了该问题。