将大型 httpresponse 流转换为 JSON 字符串？答案

【问题标题】：Converting large httpresponse stream to a JSON string?将大型 httpresponse 流转换为 JSON 字符串？
【发布时间】：2015-03-01 04:03:40
【问题描述】：

问题背景：

更新：

我仍然不确定如何从该回复中提取相关信息。我尝试将我的响应类型设置为 JSON，但仍然收到如下所示的响应。我已经考虑了关于使用 NameValueCollection 的说法，但仍然看不出这将如何帮助获得如此大的响应。理想情况下，我希望它映射到某种对象结构，它不一定必须是 JSON。

问题：

我目前正在使用 PayPal Api 'ExpressCheckout' 方法来允许用户在我的测试站点上为商品付款。来自 API 的 HTTP 响应提供了包含我需要提取的关键信息的大型响应 - 例如买家地址、付款是否成功等。

问题：

目前我不知道如何处理响应。理想情况下，我会将数据转换为 JSON 字符串，然后使用 Newtonsoft 将数据映射到 C# 类，从而轻松访问数据。以下是 Httpresponse 的示例：

TOKEN=EC%2XXXXXXXXXXXXXXXXXR&BILLINGAGREEMENTACCEPTEDSTATUS=0&CHECKOUTSTATUS=PaymentActionNotInitiated&TIMESTAMP=2015%2d01%2d02T21%3a11%3a30Z&CORRELATIONID=ab184fdba7a30&ACK=Success&VERSION=88%2e0&BUILD=14443165&EMAIL=test%40aol%2ecom&PAYERID=3XXXXXXXXXX4N&PAYERSTATUS=verified&BUSINESS=Test%20Biz%27s%20Test%20Store&FIRSTNAME=Joe&LASTNAME=King&COUNTRYCODE=GB&SHIPTONAME=Joe%20King%27s%20Test%20Store&SHIPTOSTREET=1%20Main%20Terrace&SHIPTOCITY=Wolverhampton&SHIPTOSTATE=West%20Midlands&SHIPTOZIP=W12%204LQ&SHIPTOCOUNTRYCODE=GB&SHIPTOCOUNTRYNAME=United%20Kingdom&ADDRESSSTATUS=Confirmed&CURRENCYCODE=GBP&AMT=15%2e56&ITEMAMT=15%2e56&SHIPPINGAMT=0%2e00&HANDLINGAMT=0%2e00&TAXAMT=0%2e00&INSURANCEAMT=0%2e00&SHIPDISCAMT=0%2e00&L_NAME0=ItemOne&L_QTY0=4&L_TAXAMT0=0%2e00&L_AMT0=3%2e89&L_ITEMWEIGHTVALUE0=%20%20%200%2e00000&L_ITEMLENGTHVALUE0=%20%20%200%2e00000&L_ITEMWIDTHVALUE0=%20%20%200%2e00000&L_ITEMHEIGHTVALUE0=%20%20%200%2e00000&PAYMENTREQUEST_0_CURRENCYCODE=GBP&PAYMENTREQUEST_0_AMT=15%2e56&PAYMENTREQUEST_0_ITEMAMT=15%2e56&PAYMENTREQUEST_0_SHIPPINGAMT=0%2e00&PAYMENTREQUEST_0_HANDLINGAMT=0%2e00&PAYMENTREQUEST_0_TAXAMT=0%2e00&PAYMENTREQUEST_0_INSURANCEAMT=0%2e00&PAYMENTREQUEST_0_SHIPDISCAMT=0%2e00&PAYMENTREQUEST_0_INSURANCEOPTIONOFFERED=false&PAYMENTREQUEST_0_SHIPTONAME=Joe%20King%27s%20Test%20Store&PAYMENTREQUEST_0_SHIPTOSTREET=1%20Main%20Terrace&PAYMENTREQUEST_0_SHIPTOCITY=Wolverhampton&PAYMENTREQUEST_0_SHIPTOSTATE=West%20Midlands&PAYMENTREQUEST_0_SHIPTOZIP=W12%204LQ&PAYMENTREQUEST_0_SHIPTOCOUNTRYCODE=GB&PAYMENTREQUEST_0_SHIPTOCOUNTRYNAME=United%20Kingdom&PAYMENTREQUEST_0_ADDRESSSTATUS=Confirmed&L_PAYMENTREQUEST_0_NAME0=ItemOne&L_PAYMENTREQUEST_0_QTY0=4&L_PAYMENTREQUEST_0_TAXAMT0=0%2e00&L_PAYMENTREQUEST_0_AMT0=3%2e89&L_PAYMENTREQUEST_0_ITEMWEIGHTVALUE0=%20%20%200%2e00000&L_PAYMENTREQUEST_0_ITEMLENGTHVALUE0=%20%20%200%2e00000&L_PAYMENTREQUEST_0_ITEMWIDTHVALUE0=%20%20%200%2e00000&L_PAYMENTREQUEST_0_ITEMHEIGHTVALUE0=%20%20%200%2e00000&PAYMENTREQUESTINFO_0_ERRORCODE=0

如果有人能给我一个简单的方法将这些数据映射到一个 C# 对象，那就太好了。

【问题讨论】：

为了能够使用 Json.Net 将响应转换为模型，您需要贝宝向您发送 Json。您发布的不是 Json，因此您需要手动解析。
这是来自服务器端调用吗？您可以参考：stackoverflow.com/questions/11129286/get-json-from-httpresponse
将其作为NameValueCollection 来映射有什么问题（为什么“额外”的 JSON 转换会是“理想的”）？

标签： c# json paypal httpresponse

【解决方案1】：

是否有任何特定原因需要 JSON 格式？如果它不是必需的，并且如果您可以使用键值对，那么这是您可以将响应作为键值对处理的一种方法。

public partial class Form1 : Form
{
    Dictionary<string, string> processedResponse = null;
    public Form1()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        string rawResponse = "TOKEN=EC%2XXXXXXXXXXXXXXXXXR&BILLINGAGREEMENTACCEPTEDSTATUS=0&CHECKOUTSTATUS=PaymentActionNotInitiated&TIMESTAMP=2015%2d01%2d02T21%3a11%3a30Z&CORRELATIONID=ab184fdba7a30&ACK=Success&VERSION=88%2e0&BUILD=14443165&EMAIL=test%40aol%2ecom&PAYERID=3XXXXXXXXXX4N&PAYERSTATUS=verified&BUSINESS=Test%20Biz%27s%20Test%20Store&FIRSTNAME=Joe&LASTNAME=King&COUNTRYCODE=GB&SHIPTONAME=Joe%20King%27s%20Test%20Store&SHIPTOSTREET=1%20Main%20Terrace&SHIPTOCITY=Wolverhampton&SHIPTOSTATE=West%20Midlands&SHIPTOZIP=W12%204LQ&SHIPTOCOUNTRYCODE=GB&SHIPTOCOUNTRYNAME=United%20Kingdom&ADDRESSSTATUS=Confirmed&CURRENCYCODE=GBP&AMT=15%2e56&ITEMAMT=15%2e56&SHIPPINGAMT=0%2e00&HANDLINGAMT=0%2e00&TAXAMT=0%2e00&INSURANCEAMT=0%2e00&SHIPDISCAMT=0%2e00&L_NAME0=ItemOne&L_QTY0=4&L_TAXAMT0=0%2e00&L_AMT0=3%2e89&L_ITEMWEIGHTVALUE0=%20%20%200%2e00000&L_ITEMLENGTHVALUE0=%20%20%200%2e00000&L_ITEMWIDTHVALUE0=%20%20%200%2e00000&L_ITEMHEIGHTVALUE0=%20%20%200%2e00000&PAYMENTREQUEST_0_CURRENCYCODE=GBP&PAYMENTREQUEST_0_AMT=15%2e56&PAYMENTREQUEST_0_ITEMAMT=15%2e56&PAYMENTREQUEST_0_SHIPPINGAMT=0%2e00&PAYMENTREQUEST_0_HANDLINGAMT=0%2e00&PAYMENTREQUEST_0_TAXAMT=0%2e00&PAYMENTREQUEST_0_INSURANCEAMT=0%2e00&PAYMENTREQUEST_0_SHIPDISCAMT=0%2e00&PAYMENTREQUEST_0_INSURANCEOPTIONOFFERED=false&PAYMENTREQUEST_0_SHIPTONAME=Joe%20King%27s%20Test%20Store&PAYMENTREQUEST_0_SHIPTOSTREET=1%20Main%20Terrace&PAYMENTREQUEST_0_SHIPTOCITY=Wolverhampton&PAYMENTREQUEST_0_SHIPTOSTATE=West%20Midlands&PAYMENTREQUEST_0_SHIPTOZIP=W12%204LQ&PAYMENTREQUEST_0_SHIPTOCOUNTRYCODE=GB&PAYMENTREQUEST_0_SHIPTOCOUNTRYNAME=United%20Kingdom&PAYMENTREQUEST_0_ADDRESSSTATUS=Confirmed&L_PAYMENTREQUEST_0_NAME0=ItemOne&L_PAYMENTREQUEST_0_QTY0=4&L_PAYMENTREQUEST_0_TAXAMT0=0%2e00&L_PAYMENTREQUEST_0_AMT0=3%2e89&L_PAYMENTREQUEST_0_ITEMWEIGHTVALUE0=%20%20%200%2e00000&L_PAYMENTREQUEST_0_ITEMLENGTHVALUE0=%20%20%200%2e00000&L_PAYMENTREQUEST_0_ITEMWIDTHVALUE0=%20%20%200%2e00000&L_PAYMENTREQUEST_0_ITEMHEIGHTVALUE0=%20%20%200%2e00000&PAYMENTREQUESTINFO_0_ERRORCODE=0";
        //Process response
        processedResponse = ProcessResponse(rawResponse);

        //Use received data e.g.

        //Get First name
        string fName = GetRecordValue("FIRSTNAME");

        //Get Last name
        string lName = GetRecordValue("LASTNAME");
    }

    private Dictionary<string,string> ProcessResponse(string response)
    {
        Dictionary<string, string> responseData = new Dictionary<string, string>();

        if(!string.IsNullOrWhiteSpace(response))
        {
            string[] firstPass = response.Split(new char[] { '&' });
            foreach(string pair in firstPass)
            {
                string[] secondPass = pair.Split(new char[] { '=' });
                if(secondPass!=null && secondPass.Length>0)
                {
                    responseData.Add(secondPass[0].Trim(), secondPass[1].Trim());
                }
            }
        }
        return responseData;
    }

    private string GetRecordValue(string record)
    {
        string recordValue = null;
        if(processedResponse!=null)
        {
            if(!string.IsNullOrWhiteSpace(record) && processedResponse.ContainsKey(record))
            {
                recordValue= processedResponse[record];
            }
        }
        return recordValue;
    }
}

【讨论】：

这是一个很好的答案，谢谢。我现在有一个可以使用的填充 NameValueCollection。我添加到您的答案中的唯一一项是使用“HttpUtility.UrlDecode(rawResponse)”删除“rawResponse”字符串上的所有 HTML 代码。如果我被允许，我会在 8 小时内奖励你 50 点赏金。再次感谢您！

【解决方案2】：

仍然不确定作为NameValueCollection处理它有什么问题。

例如

//NameValueCollection 
//or use  HttpUtility.ParseQueryString(some_string_of_names_values)
var foo = Request.QueryString; 

var bar = foo["FIRSTNAME"]; //based on above this is "Joe"

更新：

这是在此处处理的响应字符串，而不是请求，因此您将无法使用 Request.QueryString 检索详细信息

如cmets中所述：

string rawResponse = "TOKEN=EC%2XXXXXXXXXXXXXXXXXR&BILLINGAGREEMENTACCEPTEDSTATUS=0&CHECKOUTSTATUS=PaymentActionNotInitiated&TIMESTAMP=2015%2d01%2d02T21%3a11%3a30Z&CORRELATIONID=ab184fdba7a30&ACK=Success&VERSION=88...."

var foo = HttpUtility.ParseQueryString(rawResponse); //NameValueCollection
var bar = foo["FIRSTNAME"]; //Joe

【讨论】：

这里正在处理的是响应字符串，而不是请求，因此您将无法使用 Request.QueryString 检索详细信息。