C# httpClient 不返回内容

Question

public const string CloudApi = "https://www.idxhome.com/restServices/cloud-idx/login";
public const string password = "cloudidx";
public const string clientId = "65912";
public async Task<ActionResult> Index()
{
    HttpClient client = new HttpClient();
    client.BaseAddress = new Uri(CloudApi);
    client.DefaultRequestHeaders.Accept.Clear();

    var values = new Dictionary<string, string>
    {
       { "clientId", "cloudidx" },
       { "password", "65912" }
    };

    var content = new FormUrlEncodedContent(values);
    HttpResponseMessage response =  await client.PostAsync(CloudApi,content);

    if (response.IsSuccessStatusCode)
    {
        var responseString = response.Content.ReadAsStringAsync().Result;

        response.Content.ToString();
    }

    client.Dispose();

    return View();
}

我试过使用 HttpWebRequest 和 httpClient。 我在这里查看了十几个问题，但没有一个对这种情况有所帮助。

我可以使用 PHP 和 Curl 并获得我正在寻找的结果。 PHP 返回的数据是一个 JSON 链接列表。看起来像这样..

 "links":[
     {
        "rel":"search",
        "href":"http://www.idxhome.com/restServices/cloud-idx/client/2/listing-search/MTM4NDMwMDg2MTA3ODoxYjExMWVhNDVlYWVmMjdiOTZhNTE5NjBhMjU3YzYzMzNhZmI0MzkwODk2MmExY2U0NU0ZjFiOGE3YzFhMTU4MjYxNjNlZjNhYjF-hZWFmNDI2ZWE3NmQwMjE4ODdjNmMzNGQxZmIxYTE4MGQ2MjUyM2YZWNhYjAwM2Q5MWFmNzgyYzM3NzcwYzFmNDk5OGM1Y2ExNDZhYjQwMDk2OWI4NmFhYTllZj..."
     },
     {
        "rel":"detail",
        "href":"http://www.idxhome.com/restServices/cloud-idx/client/2/listing-search/MTM4NDMwMDg2MTA3ODoxYjExMWVhNDVlYWVmMjdiOTZhNTE5NjBhMjU3YzYzMzNhZmI0MzkwODk2MmExY2U0NU0ZjFiOGE3YzFhMTU4MjYxNjNlZjNhYjF-hZWFmNDI2ZWE3NmQwMjE4ODdjNmMzNGQxZmIxYTE4MGQ2MjUyM2YZWNhYjAwM2Q5MWFmNzgyYzM3NzcwYzFmNDk5OGM1Y2ExNDZhYjQwMDk2OWI4NmFhYTllZj..."
     },
     {
        "rel":"cities",
        "href":"http://www.idxhome.com/restServices/cloud-idx/client/2/listing-search/MTM4NDMwMDg2MTA3ODoxYjExMWVhNDVlYWVmMjdiOTZhNTE5NjBhMjU3YzYzMzNhZmI0MzkwODk2MmExY2U0NU0ZjFiOGE3YzFhMTU4MjYxNjNlZjNhYjF-hZWFmNDI2ZWE3NmQwMjE4ODdjNmMzNGQxZmIxYTE4MGQ2MjUyM2YZWNhYjAwM2Q5MWFmNzgyYzM3NzcwYzFmNDk5OGM1Y2ExNDZhYjQwMDk2OWI4NmFhYTllZj..."
     },
     {
        "rel":"zips",
        "href":"http://www.idxhome.com/restServices/cloud-idx/client/2/listing-search/MTM4NDMwMDg2MTA3ODoxYjExMWVhNDVlYWVmMjdiOTZhNTE5NjBhMjU3YzYzMzNhZmI0MzkwODk2MmExY2U0NU0ZjFiOGE3YzFhMTU4MjYxNjNlZjNhYjF-hZWFmNDI2ZWE3NmQwMjE4ODdjNmMzNGQxZmIxYTE4MGQ2MjUyM2YZWNhYjAwM2Q5MWFmNzgyYzM3NzcwYzFmNDk5OGM1Y2ExNDZhYjQwMDk2OWI4NmFhYTllZj..."
     }
  ],
"cloudIdxSearchProfile":{
    "bedrooms":2,
    "cityId":"274,284",
    "fullBaths":1,
    "lotAcres":0,
    "maxListPrice":1000000,
    "minListPrice":0,
    "newConstructionYn":false,
    "openHomesOnlyYn":false,
    "propertyType":"SFR,CND",
    "squareFeet":0,
    "zip":"94702,94703"
},
"cloudIdxDetailProfile":{
    "listingNumber":"88873733",
    "boardId":6
},
"message":"Include 'idxCloudSearchProfile' url parameters with requests to the 'search' URL. For 'detail' requests, include 'idxCloudDetailProfile' url parameters."`

API I am trying to utilize .它成功登录，但我无法获得登录调用应该传递的数据。

我相信 curl 调用和 httpclient 调用有所不同，但我不确定。

任何帮助表示赞赏。 我已将代码编辑为以下内容，但响应字符串仍为空 Copy of debug view

        public async Task<ActionResult> Index()
    {
        using (var client = new HttpClient()) { 
        client.BaseAddress = new Uri(CloudApi);
        client.DefaultRequestHeaders.Accept.Clear();
        //client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
        var values = new Dictionary<string, string>
        {
           { "clientId", "65912" },
           { "password", "cloudidx" }

        };
        var content = new FormUrlEncodedContent(values);
        HttpResponseMessage response = await client.PostAsync("login", content);
            string responseString = String.Empty;
            if (response.IsSuccessStatusCode)
        {
             responseString = await response.Content.ReadAsStringAsync();

        }
    }
        return View();
    }

这是有效的 curl 调用

function cloudIDXCall($url, $method, $data = array()) {

$curl = curl_init();
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); // return response as a string
curl_setopt($curl, CURLOPT_SSLVERSION, 3); // force default SSL version to 3    
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0); // turn off verification of the remote server's certificate - helps with Windows

$queryString = http_build_query($data); // pack parameters into a URL query string

if ($method == 'get') {
    // GET is the default request method for cURL
    if (strlen($queryString) > 0) $url = $url . '?' . $queryString; // append parameters for GET
} elseif ($method == 'post') {
    curl_setopt($curl, CURLOPT_POST, 1);
    curl_setopt($curl, CURLOPT_POSTFIELDS, $queryString); // set parameters for POST
} else {
    return array('failure' => 'Invalid method');
}

curl_setopt($curl, CURLOPT_URL, $url);
$response = curl_exec($curl);

if ( !$response ) {
    $errMsg = "Error: " . curl_error($curl) . " - Code: " . curl_errno($curl);
    curl_close($curl);
    return array('failure' => $errMsg);
}

$responseArray = json_decode ($response, $assoc = true); // decode JSON into assoc array
curl_close($curl);
return $responseArray;

System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3; solved the issue... Not sure why it made a difference but it did.

Answer 1

使用:

var responseString = await response.Content.ReadAsStringAsync();

结果将在 responseString 中。

还有一个问题:

您将 BaseAddress 设置为 CloudApi，因此现在调用 PostAsync 时的 requestUri 应该为空.像这样:

var response = await client.PostAsync(String.Empty, content);

也帮自己一个忙，使用 C# 提供的 using 关键字。

因此，您的完整方法应该如下所示:

    using(var client = new HttpClient())
    {
        client.BaseAddress = "http://baseApiAddress.com";

        var values = new Dictionary<string, string>
        {
            { "clientId", "cloudidx" },
            { "password", "65912" }
        };

        var content = new FormUrlEncodedContent(values);
        var response = await client.PostAsync("apiMethod", content);
        string responseString = String.Empty;

        if(response.IsSuccessStatusCode)
        {
            responseString = await response.Content.ReadAsStringAsync();
        }
    }

    return View();