本文介绍了PayPal API Http 调用的问题的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我已经集成了一个选项,供用户通过 PayPal 支付他们在我创建的网上商店上的在线购物.当我开始收到此错误时,问题突然出现:
I've integrated an option for users to pay via PayPal their online shopping on the web shop that I'm creating. The problem came up suddenly when I started to get this error:
You must write ContentLength bytes to the request stream before calling [Begin]GetResponse.
Http调用的代码如下:
And the code for the Http call is as following:
public string HttpCall(string NvpRequest)
{
string url = pEndPointURL;
string strPost = NvpRequest + "&" + buildCredentialsNVPString();
strPost = strPost + "&BUTTONSOURCE=" + HttpUtility.UrlEncode(BNCode);
HttpWebRequest objRequest = (HttpWebRequest)WebRequest.Create(url);
objRequest.Timeout = Timeout;
objRequest.Method = "POST";
objRequest.ContentLength = strPost.Length;
try
{
using (StreamWriter myWriter = new StreamWriter(objRequest.GetRequestStream()))
{
myWriter.Write(strPost.ToString());
}
}
catch (Exception e)
{
}
//Retrieve the Response returned from the NVP API call to PayPal.
HttpWebResponse objResponse = (HttpWebResponse)objRequest.GetResponse(); // this is the line where the exception occurs...
string result;
using (StreamReader sr = new StreamReader(objResponse.GetResponseStream()))
{
result = sr.ReadToEnd();
}
return result;
}
有人可以帮我解决这个问题吗?一天前它工作正常,现在它给了我这个错误?
Can someone help me out with this? It worked fine a day ago, now its giving me this error?
推荐答案
好吧,如果有人感兴趣,我可以通过在创建 Web 请求之前添加以下行来修复错误(我可以通过像这样到 Tls12):
Okay so if anyone is interested, I was able to fix the error by adding the following line before creating the web request (I was able to fix it by going down to Tls12 like this):
`ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12`;
干杯:-)
编辑试试这个:
public string HttpCall(string NvpRequest)
{
string url = pEndPointURL;
string strPost = NvpRequest + "&" + buildCredentialsNVPString();
strPost = strPost + "&BUTTONSOURCE=" + HttpUtility.UrlEncode(BNCode);
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls;
// Try using Tls11 if it doesnt works for you with Tls
HttpWebRequest objRequest = (HttpWebRequest)WebRequest.Create(url);
objRequest.Timeout = Timeout;
objRequest.Method = WebRequestMethods.Http.Post;
objRequest.ContentLength = strPost.Length;
try
{
using (StreamWriter myWriter = new StreamWriter(objRequest.GetRequestStream()))
{
myWriter.Write(strPost.ToString());
}
}
catch (Exception e)
{
}
//Retrieve the Response returned from the NVP API call to PayPal.
HttpWebResponse objResponse = (HttpWebResponse)objRequest.GetResponse();
string result;
using (StreamReader sr = new StreamReader(objResponse.GetResponseStream()))
{
result = sr.ReadToEnd();
}
return result;
}
这篇关于PayPal API Http 调用的问题的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!