C# HttpClient POST 请求处理响应

Question

我需要向接收参数用户名、密码和产品 ID 的 API 发出 POST 请求。我创建了该部分并且工作正常，但是当发送参数正确时，我该如何处理响应 API 返回状态 200 和产品目的。在其他情况下，当发送参数错误时，API 返回 200 和 json 对象，如下所示:

{
    "Username": {
        "Messages": [
            "The Username field is required."
        ]
    },
    "Password": {
        "Messages": [
            "The Password field is required."
        ]
    },
    "ProductId": {
        "Messages": [
            "The productId field is required."
        ]
    }
}

那么我该如何处理这样的事情。

这是我的 POST 请求代码:

public async Task<string> PostProductId(string path)
{
    using (var client = GetHttpClient())
    {
        string content = null;
        try
        {
            string endpoint = path;

            string requestJson = JsonConvert.SerializeObject(bodyObject);
            HttpContent httpContent = new StringContent(requestJson, Encoding.UTF8, "application/json");

            var response = await client.PostAsync(endpoint, httpContent);

            content = response.Content.ReadAsStringAsync();

        }
        catch (HttpRequestException ex)
        {
            Console.WriteLine("ERROR: " + ex.Message);
            return null
        }
        return content;
    }
}

Answer 1

要返回状态和对象，您可以使用 IHttpActionResult。

你可以在不测试的情况下做这样的事情:

public async Task<IHttpActionResult> PostProductId(string path)
{
    using (var client = GetHttpClient())
    {
        string content = null;
        try
        {
            string endpoint = path;

            string requestJson = JsonConvert.SerializeObject(bodyObject);
            HttpContent httpContent = new StringContent(requestJson, Encoding.UTF8, "application/json");

            var response = await client.PostAsync(endpoint, httpContent);

            content = response.Content.ReadAsStringAsync();

        }
        catch (HttpRequestException ex)
        {
            Console.WriteLine("ERROR: " + ex.Message);
            return InternalServerError(ex);
        }
        return Ok(content);
    }
}

一些引用:

• https://learn.microsoft.com/en-us/aspnet/web-api/overview/getting-started-with-aspnet-web-api/action-results
• https://learn.microsoft.com/en-us/aspnet/core/migration/webapi?view=aspnetcore-2.2