PHP网页通过c#RESI API传递Json后显示空字符串

Question

我已经问过这个问题，但需要进一步的帮助。 c# is not sending json request to PHP

我正在尝试使用 JSON 和 REST API HTTP 请求将数据从 c# 发送到 PHP 网页。

在 PHP 页面上我看到“字符串 (0)”

c#代码

user user = new user();
    {
        user.firstname = "aaaa";
        user.secondname = "aaaaaaaaaaa";
        user.email = "aaa";
        user.phonenumber = "aaa";
    };
    string json = JsonConvert.SerializeObject(user);
    HttpWebRequest request = WebRequest.Create("https://scs.agsigns.co.uk/test.php") as HttpWebRequest;
    request.ContentType = "application/json";
    //request.Accept = "application/json, text/javascript, */*";
    request.Method = "POST";
    using (StreamWriter writer = new StreamWriter(request.GetRequestStream()))
    {
        writer.Write(json);
    }
    HttpWebResponse response = request.GetResponse() as HttpWebResponse;
    Stream stream = response.GetResponseStream();

    string json1 = "";

    using (StreamReader reader = new StreamReader(stream))
    {
        while (!reader.EndOfStream)
        {
            json1 += reader.ReadLine();
        }
    }
    DisplayAlert("Alert", json1, "OK");

PHP

$content = file_get_contents("php://input");

var_dump($content);

在 c# 中我收到此警报

c# display alert message

在 PHP 网页中，我看到以下内容

PHP page shows string(0)

我想获取应用程序发送并保存到 MySql 的数据。

编辑

我已修改 PHP 文件代码以在 MySQL 中保存数据。

我遇到错误

注意：尝试在第 16 行的 C:\inetpub\scs\test.php 中获取非对象的属性“名称”

这是我的 PHP 代码。

//Receive the RAW post data.
$content = file_get_contents("php://input");

$obj = json_encode($content);

$insert_stmt = $mysqli->prepare("INSERT INTO test (name,address) VALUES (?,?)");
$name =$obj->{'name'};
$address = $obj->{'address'};


$insert_stmt->bind_param("ss", $name, $address);
//Execute the statement
$insert_stmt->execute();

Answer 1

你应该使用HttpClient 而不是HttpWebRequest

使用 HttpClient 您的请求将如下所示

public async void SendUserDataToServer()
{
    user user = new user();
    {
        user.firstname = "aaaa";
        user.secondname = "aaaaaaaaaaa";
        user.email = "aaa";
        user.phonenumber = "aaa";
    };
    string json = JsonConvert.SerializeObject(user);
    using (var client = new HttpClient())
    {
        var response = await client.PostAsync(
            "https://scs.agsigns.co.uk/test.php", 
             new StringContent(json, Encoding.UTF8, "application/json"));
    }
    DisplayAlert("Alert", json, "OK");
}

参考：this