Question

我是Xamarin的新手，试图构建一个简单的应用程序。我正在尝试发送一个简单的post呼叫，其中我发送一个参数。这是我的代码：

    private async Task fetchWwarrents(){
        var request = new HttpRequestMessage(HttpMethod.Post,"http://perductor.hr/aplikacija/rest/radninalozi.php");  
        var keyValues = new List<KeyValuePair<string, string>>{
            new KeyValuePair<string, string>("driver","1")
    };
        request.Content = new FormUrlEncodedContent(keyValues);
        var client = new HttpClient();
        var responseMessage = await client.SendAsync(request);
        var jwt = await responseMessage.Content.ReadAsStringAsync(); 
    }

它有效，我的意思是我从api获取数据，但无法识别驱动程序参数。我用邮递员测试了api，当我发布驱动程序参数时它正在工作..我不知道问题出在哪里，有人可以帮我吗？

Answer 1

您发送的json请求格式错误，只需要修改Httpclient请求即可。

private async Task fetchWwarrents()
{
        try
            {
                using (var client = new HttpClient())
                {
                    HttpContent content=null;
                    var json = JsonConvert.SerializeObject(RquestString);
                    content = new StringContent(json, Encoding.UTF8, "application/json");
                    using (var response = await client.PostAsync("http://perductor.hr/aplikacija/rest/radninalozi.php", content))
                    {
                        var responseStr = await response.Content.ReadAsStringAsync();


                        if (!string.IsEmpty(responseStr))
                        {
                            //Parse the json string to object as per requirment
                        }
                        else
                        {
                            //Message
                        }

                    }


                }
            }
            catch (Exception ex)
            {
                Debug.WriteLine(@"ERROR {0}", ex.Message);

            } 
}

无法添加参数以Xamarin形式发布API调用

1 个答案: