如何在c＃.net中使用httpwebrequest数据发布 [英] How to post using httpwebrequest data in c#.net

问题描述

尝试
 {
 
 string url =http://xyz.co.in:8080/register; 
 
 string postdata =uid+ uid +userid+ userid +password+密码+emailid+ emailid +isotemplate+ isotemplate +mobileno+ mobileno + 
deviceserialid+ deviceserialid +compmacaddress+ compmacaddress +kioskid+ kioskid +kioskhandler+ kioskhandler +devicename
 + devicename +devicemodel+ devicemodel; 
 byte [] data = Encoding.UTF8.GetBytes（postdata）; 
 
 HttpWebRequest request =（HttpWebRequest）WebRequest.Create（url）; 
 
 request.KeepAlive = false; 
 request.ProtocolVersion = HttpVersion.Version10; 
 request.Method =POST; 
 //将我们的请求字符串转换为字节流
 byte [] postBytes = Encoding.UTF8.GetBytes（postdata）; 
 
 //这很重要 - 请确保以这种方式指定类型
 request.ContentType =application / json; charset = UTF-8; 
 request.Accept =application / json; 
 request.ContentLength = postBytes.Length; 
 //request.CookieContainer = Cookies; 
 //request.UserAgent = currentUserAgent; 
 Stream requestStream = request.GetRequestStream（）; 
 
 //现在发送
 requestStream.Write（postBytes，0，postBytes.Length）; 
 requestStream.Close（）; 
 
 //抓住响应并将其打印到控制台以及状态码
 HttpWebResponse response =（HttpWebResponse）request.GetResponse（）; 
字符串结果; 
 using（StreamReader rdr = new StreamReader（response.GetResponseStream（）））
 {
 result = rdr.ReadToEnd（）; 
} 
 

我的尝试：



远程服务器错误400消息

解决方案

< blockquote>

尝试将postdata设置为字符串，例如uid =+ uid +& userid =+ userid +& password =+ password etc 
 ie'& '在不同的字段之间，字段名称和值之间的'='。 
 
或者使用FormUrlEncodedContent 
 
类似于
 Dim params = New Dictionary（Of String，String）
 params.Add（uid，uid） 
 params.Add（userid，userid）
 params.Add（password，password）
 .... 
 
 Dim postdata = New FormUrlEncodedContent（ PARAMS）

try
           {

               string url = "http://xyz.co.in:8080/register";

               string postdata = "uid" + uid + "userid" + userid + "password" + password + "emailid" + emailid + "isotemplate"+ isotemplate + "mobileno" + mobileno +
                                  "deviceserialid" + deviceserialid + "compmacaddress" + compmacaddress + "kioskid" + kioskid + "kioskhandler" + kioskhandler + "devicename"
                                  + devicename + "devicemodel" + devicemodel;
               byte[] data = Encoding.UTF8.GetBytes(postdata);

               HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);

               request.KeepAlive = false;
               request.ProtocolVersion = HttpVersion.Version10;
               request.Method = "POST";
               // turn our request string into a byte stream
               byte[] postBytes = Encoding.UTF8.GetBytes(postdata);

               // this is important - make sure you specify type this way
               request.ContentType = "application/json; charset=UTF-8";
               request.Accept = "application/json";
               request.ContentLength = postBytes.Length;
               //request.CookieContainer = Cookies;
               //request.UserAgent = currentUserAgent;
               Stream requestStream = request.GetRequestStream();

               // now send it
               requestStream.Write(postBytes, 0, postBytes.Length);
               requestStream.Close();

               // grab te response and print it out to the console along with the status code
               HttpWebResponse response = (HttpWebResponse)request.GetResponse();
               string result;
               using (StreamReader rdr = new StreamReader(response.GetResponseStream()))
               {
                   result = rdr.ReadToEnd();
               }

What I have tried:

remote server bad error 400 message

解决方案

Try setting your postdata to be a string like "uid=" + uid + "&userid=" + userid + "&password=" + password etc
i.e. '&' between different fields and '=' between the field name and value.

Alternatively use FormUrlEncodedContent

Something like
Dim params = New Dictionary(Of String, String)
params.Add("uid", uid)
params.Add("userid", userid)
params.Add("password", password)
....

Dim postdata= New FormUrlEncodedContent(params)

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