.Net WebApi returns 非开发环境格式的Jsons

Question

我们有一个 WebApi，它只是 returns 一个像这样的 JSON 响应：

[{ "company": "KYC" }]

当我们发布 WebApi 时，使用 VS 上的发布选项或者只是在服务器上复制和粘贴，returns这很奇怪，而且它只在这个服务器上。

生产服务器上的响应是：

{ "Version": { "_Major": 1, "_Minor": 1, "_Build": -1, "_Revision": -1 }, "Content": { "Headers": [ { "Key": "Content-Type", "Value": [ "application/json; charset=utf-8" ] } ] }, "StatusCode": 200, "ReasonPhrase": "OK", "Headers": [], "RequestMessage": null, "IsSuccessStatusCode": true }

我已经 "Googled" 这没有成功。 这是控制器代码：

    [Authorize]
    [HttpGet]
    [EnableCors(origins: "*", headers: "*", methods: "*")]
    [Route("api/Infra/GetEmpresas/{system}")]
    public HttpResponseMessage GetCompanies(string system)
    {
        logger.Debug("Start GetCompanies");
        HttpResponseMessage response = new HttpResponseMessage();
        try
        {
            if (!String.IsNullOrEmpty(system))
            {
                Companies comps = new Companies();
                var result = comps.GetCompanies(system);

                if (result != string.Empty)
                {
                    if (result.ToLower().StartsWith("error"))
                    {
                        response.StatusCode = HttpStatusCode.NotFound;
                        response.Content = new StringContent(
                            "{\"error\":\"" + result + "\"}", System.Text.Encoding.UTF8, "application/json");
                    }
                    else
                    {
                        response.Content = new StringContent(
                        result, System.Text.Encoding.UTF8, "application/json");
                    }
                }
                else
                {
                    response.StatusCode = HttpStatusCode.NotFound;
                    response.Content = new StringContent(
                        "{\"error\":\"Company not found\"}", System.Text.Encoding.UTF8, "application/json");
                }
            }
            else
            {
                response.StatusCode = HttpStatusCode.NotFound;
                response.Content = new StringContent(
                    "{\"error\":\"System was not provided\"}", System.Text.Encoding.UTF8, "application/json");
            }
        }
        catch (Exception exx)
        {
            logger.Error("Error on GetCompanies");
            logger.Error(exx);
            response.StatusCode = HttpStatusCode.InternalServerError;
            response.Content = new StringContent(
                "{\"error\":\"Error on GetCompanies\"}", System.Text.Encoding.UTF8, "application/json");
        }
        return response;
    }

Answer 1

您是否尝试过使用请求的 CreateResponse/CreateErrorResponse 方法生成 HttpResponseMessage？

[Authorize]
    [HttpGet]
    [EnableCors(origins: "*", headers: "*", methods: "*")]
    [Route("api/Infra/GetEmpresas/{system}")]
    public HttpResponseMessage GetCompanies(string system)
    {
        logger.Debug("Start GetCompanies");
        HttpResponseMessage response;
        try
        {
            if (!String.IsNullOrEmpty(system))
            {
                Companies comps = new Companies();
                var result = comps.GetCompanies(system);

                if (result != string.Empty)
                {
                    if (result.ToLower().StartsWith("error"))
                    {
                        response = Request.CreateErrorResponse(HttpStatusCode.NotFound, result);
                    }
                    else
                    {
                        response = Request.CreateResponse(result);
                    }
                }
                else
                {
                    response = Request.CreateErrorResponse(HttpStatusCode.NotFound, "Company not found");
                }
            }
            else
            {
                response = Request.CreateErrorResponse(HttpStatusCode.NotFound, "System was not provided");
            }
        }
        catch (Exception exx)
        {
            logger.Error("Error on GetCompanies");
            logger.Error(exx);
            response = Request.CreateErrorResponse(HttpStatusCode.InternalServerError, "Error on GetCompanies");
        }
        return response;
    }

Answer 2

我的案例的解决方案非常简单。刚刚将框架更新到最新的 .Net 版本，在本例中为 4.8。 我们遇到问题的服务器是 4.6.1586。