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对于asp.net core 2 graphql端点,如何提取请求头并将其传递到业务逻辑?

graphql-dotnet asp.net-core-2.1 graphql c#

santosh kumar patro · 技术社区 · 7 年前

我使用asp.net web api 2和EntityFramework 6开发了以下代码段。

public class TestController : BaseApiController
{
    private readonly ITestService _testService;
    private readonly ICommonService _commonService;
    private readonly IImageService _imageService;
    public TestController(ITestService testService, ICommonService commonService, IImageService imageService)
    {
        _testService = testService;
        _commonService = commonService;
        _imageService = imageService;
    }

    [Route("test")]
    public IHttpActionResult Get()
    {
        var resp = _testService.GetDetailsForLocation(locale);
        return Ok(resp);
    }
}

public class BaseApiController : ApiController
{
    public string locale
    {
        get
        {
            if (Request.Headers.Contains("Accept-Language"))
            {
                return Request.Headers.GetValues("Accept-Language").First();
            }
            else
            {
                return string.Empty;
            }
        }
    }

    public string GetCookieId()
    {
        string value = string.Empty;
        IEnumerable<CookieHeaderValue> cookies = this.Request.Headers.GetCookies("mycookie");
        if (cookies.Any())
        {
            IEnumerable<CookieState> cookie = cookies.First().Cookies;
            if (cookie.Any())
            {
                var cookieValue = cookie.FirstOrDefault(x => x.Name == "mycookie");
                if (cookieValue != null)
                    value = cookieValue.Value.ToLower();
            }
        }

        return value;
    }
}

在这里,我想知道读取请求头并将值传递给businessloigc(即在本例中传递给方法:GetDetailsForLocation(“en”)的最佳方法是什么

public class TestQuery : ObjectGraphType<object>
{
    public TestQuery(ITestService testService)
    {
        Field<TestResultType>("result", resolve: context => testService.GetDetailsForLocation("en"), description: "Test data");
    }
}

有人能帮我解决这个问题吗?

1 回复 | 直到 7 年前

Joe McBride 7 年前

最简单的方法是 IHttpContextAccessor IHTTP上下文访问器 作为独生子女。

https://adamstorr.azurewebsites.net/blog/are-you-registering-ihttpcontextaccessor-correctly

在 StartUp.cs

public void ConfigureServices(IServiceCollection services)
{
    services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
}

public class TestQuery : ObjectGraphType<object>
{
    public TestQuery(ITestService testService, IHttpContextAccessor accessor)
    {
        Field<TestResultType>(
            "result",
            description: "Test data",
            resolve: context => testService.GetDetailsForLocation(accessor.HttpContext...)
        );
    }
}

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