HttpWebRequest发送post请求问题

wuxiao' 2014-01-09 05:03:02

HttpWebRequest request = WebRequest.Create(uri) as HttpWebRequest;
//请求方式
request.Method = "POST";
//超时时间
//request.Timeout = 300000;
request.ContentType = "text/xml";
byte[] payload = Encoding.UTF8.GetBytes(message);
request.ContentLength = payload.Length;
//获得请求流
writer = request.GetRequestStream();
////将请求参数写入流
writer.Write(payload, 0, payload.Length);

//关闭请求流
writer.Flush();
writer.Close();

reader = new StreamReader(response.GetResponseStream());
string responseData = reader.ReadToEnd();
response.Close();
reader.Close();

代码如上所示，当我循环执行多次这个代码时，导致连接无法释放
查看端口效果如下：

求大神指教啊，急啊，当什么都不发的时候，循环多次没有任何问题

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wuxiao' 2014-01-16

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问题已经解决，并非.net客户端问题，而是服务端读数据问题导致，谢谢大家的回复

wuxiao' 2014-01-14

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自己顶起，难道大家都没遇到过？不可思议啊...

wuxiao' 2014-01-10

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引用 5 楼 WM_JAWIN 的回复:

改三楼的，也许这样就可以了

 private static string Proc(string url, string postData)
        {
            HttpWebRequest request = CreateRequest(url, postData);
            using( HttpWebResponse response = (HttpWebResponse)request.GetResponse()){
            using (StreamReader reader = new StreamReader(response.GetResponseStream(), m_Encoding))
            {
                string reHtml = reader.ReadToEnd();
                reader.Close();
                return reHtml;
            }
        }}

没有效果，仍然会阻塞端口，出现等待状态

WM_JAWIN 2014-01-10

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改三楼的，也许这样就可以了

 private static string Proc(string url, string postData)
        {
            HttpWebRequest request = CreateRequest(url, postData);
            using( HttpWebResponse response = (HttpWebResponse)request.GetResponse()){
            using (StreamReader reader = new StreamReader(response.GetResponseStream(), m_Encoding))
            {
                string reHtml = reader.ReadToEnd();
                reader.Close();
                return reHtml;
            }
        }}

wuxiao' 2014-01-10

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感谢3楼wyd1520的回复，但是你的代码效果和我写的一样，仍然存在那个问题。。

本拉灯 2014-01-09

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引用楼主 wushifanwuxiao 的回复:

HttpWebRequest request = WebRequest.Create(uri) as HttpWebRequest; //请求方式 request.Method = "POST"; //超时时间 //request.Timeout = 300000; request.ContentType = "text/xml"; byte[] payload = Encoding.UTF8.GetBytes(message); request.ContentLength = payload.Length; //获得请求流 writer = request.GetRequestStream(); ////将请求参数写入流 writer.Write(payload, 0, payload.Length); //关闭请求流 writer.Flush(); writer.Close(); reader = new StreamReader(response.GetResponseStream()); string responseData = reader.ReadToEnd(); response.Close(); reader.Close(); 代码如上所示，当我循环执行多次这个代码时，导致连接无法释放查看端口效果如下：求大神指教啊，急啊，当什么都不发的时候，循环多次没有任何问题

给你用我写的完整的


 public class Http
    {
        static Encoding m_Encoding = Encoding.Default;

        public static string Get(string url)
        {
            return Proc(url, string.Empty);
        }



        public static string Post(string url, string data)
        {
            return Proc(url, data);
        }


        public static string Get(string url, List<NameValue> nameValues)
        {

            if (nameValues != null && nameValues.Count > 0)
            {
                string data = string.Join("&", nameValues.Select(o => string.Format("{0}={1}", o.Name, o.Value)).ToArray());
                url = string.Format("{0}?{1}", url, data);
            }
            return Get(url);
        }

        public static string Post(string url, List<NameValue> nameValues)
        {
            string data = string.Empty;
            if (nameValues != null && nameValues.Count > 0)
            {
                data = string.Join("&", nameValues.Select(o => string.Format("{0}={1}", o.Name, o.Value)).ToArray());
            }
            return Post(url, data);
        }

        private static HttpWebRequest CreateRequest(string url, string postData)
        {
            HttpWebRequest request = null;
            request = (HttpWebRequest)WebRequest.Create(url);
            request.Accept = "*/*";
            request.ProtocolVersion = HttpVersion.Version11;
            request.AllowAutoRedirect = true;
            request.Timeout = 1000 * 30;
            request.KeepAlive = true;
            if (!string.IsNullOrEmpty(postData))
            {
                request.ContentType = "application/x-www-form-urlencoded";
                request.Method = "POST";
                byte[] bytes = m_Encoding.GetBytes(postData);
                request.ContentLength = bytes.Length;
                Stream requestStream = null;
                try
                {
                    requestStream = request.GetRequestStream();
                    requestStream.Write(bytes, 0, bytes.Length);
                }
                catch (Exception exception)
                {

                }
                finally
                {
                    if (requestStream != null)
                    {
                        requestStream.Close();
                    }
                }
            }
            return request;
        }


        private static string Proc(string url, string postData)
        {
            HttpWebRequest request = CreateRequest(url, postData);
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            using (StreamReader reader = new StreamReader(response.GetResponseStream(), m_Encoding))
            {
                string reHtml = reader.ReadToEnd();
                reader.Close();
                return reHtml;
            }
        }
    }

    public class NameValue
    {
        public NameValue(string name, string value)
        {
            this.Name = name;
            this.Value = value;
        }
        public string Name { get; set; }
        public string Value { get; set; }
    }


DEMO

            List<NameValue> list = new List<NameValue>();
            list.Add(new NameValue("AreaID", macInfo.AreaID));
            list.Add(new NameValue("Code", macInfo.Code));
            list.Add(new NameValue("SortIndex", (macInfo.Index + 1).ToString()));
            list.Add(new NameValue("Table", table));
            list.Add(new NameValue("Slot", slot));
            list.Add(new NameValue("SubSlot", subSlot));
            list.Add(new NameValue("Lane", lane));

 Http.Post(url,list)就是了

记得记点结贴呀。

wuxiao' 2014-01-09