HttpRequest 工具
1.根据 url 和 encoding 获取当前url页面的 html 源代码
public static string GetHtml(string url, Encoding encoding)
{
HttpWebRequest request = null;
HttpWebResponse response = null;
StreamReader reader = null;
try
{
ServicePointManager.Expect100Continue = true;
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls;
request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "GET";
response = (HttpWebResponse)request.GetResponse();
if (response.StatusCode == HttpStatusCode.OK && response.ContentLength < * )
{
if (response.ContentEncoding != null && response.ContentEncoding.Equals("gzip", StringComparison.InvariantCultureIgnoreCase))
reader = new StreamReader(new GZipStream(response.GetResponseStream(), CompressionMode.Decompress), encoding);
else
reader = new StreamReader(response.GetResponseStream(), encoding);
string html = reader.ReadToEnd(); return html;
}
}
catch (Exception ex)
{
}
finally
{ if (response != null)
{
response.Close();
response = null;
}
if (reader != null)
reader.Close(); if (request != null)
request = null;
}
return string.Empty;
}
2.获取URL访问的HTML内容
public static string GetWebContent(string Url)
{
string strResult = "";
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
request.Timeout = ;
request.Headers.Set("Pragma", "no-cache"); HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream streamReceive = response.GetResponseStream(); Encoding encoding = Encoding.GetEncoding("utf-8");
StreamReader streamReader = new StreamReader(streamReceive, encoding);
strResult = streamReader.ReadToEnd();
}
catch
{ } return strResult;
}
3.根据网站url获取流
public static Stream GetWebUrlStream(string Url)
{
Stream stream = null;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
if (response.StatusCode == HttpStatusCode.OK)
{
stream = response.GetResponseStream();
}
return stream;
}
4.根据发送数据获取url 流对象
public static Stream GetWebUrlStream(string Url, string body)
{
Stream stream = null;
Encoding code = Encoding.GetEncoding("utf-8");
byte[] bytesRequestData = code.GetBytes(body);
try
{
//设置HttpWebRequest基本信息
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(Url);
request.Timeout = ;
request.Method = "post";
request.ContentType = "application/octet-stream";
//填充POST数据
request.ContentLength = bytesRequestData.Length; Stream reqStream = request.GetRequestStream();
reqStream.Write(bytesRequestData, , bytesRequestData.Length);
HttpWebResponse wr = (HttpWebResponse)request.GetResponse();
if (wr.StatusCode == HttpStatusCode.OK)
{
//在这里对接收到的页面内容进行处理
stream = wr.GetResponseStream();
}
}
catch { }
return stream;
}
5.根据post 数据填充url 获取html对象
public static string PostHtml(string Url, string body)
{
Encoding code = Encoding.GetEncoding("utf-8");
byte[] bytesRequestData = code.GetBytes(body);
string strResult = "";
try
{
//设置HttpWebRequest基本信息
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(Url);
request.Timeout = ;
request.Method = "post";
request.ContentType = "application/x-www-form-urlencoded; charset=UTF-8"; //填充POST数据
request.ContentLength = bytesRequestData.Length; using (Stream reqStream = request.GetRequestStream())
{
reqStream.Write(bytesRequestData, , bytesRequestData.Length);
}
using (WebResponse wr = request.GetResponse())
{
//在这里对接收到的页面内容进行处理
Stream myStream = wr.GetResponseStream();
//获取数据必须用UTF8格式
StreamReader sr = new StreamReader(myStream, code);
strResult = sr.ReadToEnd();
}
}
catch { }
return strResult;
}
6.将本地文件上传到指定的服务器(HttpWebRequest方法)
public static string PostUpData(string address, string fileNamePath, string saveName, string dataName)
{
string returnValue = "";
FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read);//时间戳
string strBoundary = "----------" + DateTime.Now.Ticks.ToString("x");
byte[] boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + strBoundary + "\r\n");
//请求头部信息
StringBuilder sb = new StringBuilder();
sb.Append("--");
sb.Append(strBoundary);
sb.Append("\r\n");
sb.AppendFormat("Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"", dataName, saveName);
sb.Append("\r\n");
sb.Append("Content-Type: application/octet-stream");
sb.Append("\r\n");
sb.Append("\r\n");
string strPostHeader = sb.ToString();
byte[] postHeaderBytes = Encoding.UTF8.GetBytes(strPostHeader);
//根据uri创建HttpWebRequest对象
HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(address);
httpReq.Method = "POST";
//对发送的数据不使用缓存
httpReq.AllowWriteStreamBuffering = false;
//设置获得响应的超时时间（300秒）
httpReq.Timeout = ;
httpReq.ContentType = "multipart/form-data; boundary=" + strBoundary;
long length = fs.Length + postHeaderBytes.Length + boundaryBytes.Length;
long fileLength = fs.Length;
httpReq.ContentLength = length;
try
{
Stream postStream = httpReq.GetRequestStream();
//发送请求头部消息
postStream.Write(postHeaderBytes, , postHeaderBytes.Length); //每次上传4k
byte[] buffer = new Byte[checked((uint)Math.Min(, (int)fs.Length))];
fs.Seek(, SeekOrigin.Begin);
int bytesRead = ;
while ((bytesRead = fs.Read(buffer, , buffer.Length)) != )
postStream.Write(buffer, , bytesRead);
//添加尾部的时间戳
postStream.Write(boundaryBytes, , boundaryBytes.Length);
postStream.Close();
//获取服务器端的响应
WebResponse webRespon = httpReq.GetResponse();
Stream s = webRespon.GetResponseStream();
StreamReader sr = new StreamReader(s);
//读取服务器端返回的消息
returnValue = sr.ReadToEnd();
s.Close();
sr.Close();
}
catch
{ }
finally
{
fs.Close();
}
return returnValue;
}
7.将网址图片上传到指定的服务器(HttpWebRequest方法)
public static string PostUpDataUrlImg(string address, string fileNamePath, string saveName, string dataName)
{
string returnValue = "";
// 要上传的文件
System.Drawing.Imaging.ImageFormat format = System.Drawing.Imaging.ImageFormat.Jpeg;
Image original_image = Image.FromStream(GetWebUrlStream(fileNamePath));
MemoryStream ms = new MemoryStream();
original_image.Save(ms, format);
original_image.Clone();
//时间戳
string strBoundary = "----------" + DateTime.Now.Ticks.ToString("x");
byte[] boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + strBoundary + "\r\n");
//请求头部信息
StringBuilder sb = new StringBuilder();
sb.Append("--");
sb.Append(strBoundary);
sb.Append("\r\n");
sb.AppendFormat("Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"", dataName, saveName);
sb.Append("\r\n");
sb.Append("Content-Type: application/octet-stream");
sb.Append("\r\n");
sb.Append("\r\n");
string strPostHeader = sb.ToString();
byte[] postHeaderBytes = Encoding.UTF8.GetBytes(strPostHeader);
//根据uri创建HttpWebRequest对象
HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(address);
httpReq.Method = "POST";
//对发送的数据不使用缓存
httpReq.AllowWriteStreamBuffering = false;
//设置获得响应的超时时间（30秒）
httpReq.Timeout = ;
httpReq.ContentType = "multipart/form-data; boundary=" + strBoundary;
long length = ms.Length + postHeaderBytes.Length + boundaryBytes.Length;
long fileLength = ms.Length;
httpReq.ContentLength = length;
try
{
Stream postStream = httpReq.GetRequestStream();
//发送请求头部消息
postStream.Write(postHeaderBytes, , postHeaderBytes.Length); //每次上传4k
byte[] buffer = new Byte[checked((uint)Math.Min(, (int)ms.Length))];
ms.Seek(, SeekOrigin.Begin);
int bytesRead = ;
while ((bytesRead = ms.Read(buffer, , buffer.Length)) != )
postStream.Write(buffer, , bytesRead);
//添加尾部的时间戳
postStream.Write(boundaryBytes, , boundaryBytes.Length);
postStream.Close();
//获取服务器端的响应
WebResponse webRespon = httpReq.GetResponse();
Stream s = webRespon.GetResponseStream();
StreamReader sr = new StreamReader(s);
//读取服务器端返回的消息
returnValue = sr.ReadToEnd();
s.Close();
sr.Close();
}
catch
{ }
finally
{
ms.Close();
}
return returnValue;
}
8.将网络地址文件上传到指定的服务器
public static string PostHttpUpData(string address, string fileNamehttp, string saveName, string dataName)
{
string returnValue = "";
WebClient wc = new WebClient();
//网址文件下载
byte[] downData = wc.DownloadData(fileNamehttp);
wc.Dispose();
//时间戳
string strBoundary = "----------" + DateTime.Now.Ticks.ToString("x");
byte[] boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + strBoundary + "\r\n");
//请求头部信息
StringBuilder sb = new StringBuilder();
sb.Append("--");
sb.Append(strBoundary);
sb.Append("\r\n");
sb.AppendFormat("Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"", dataName, saveName);
sb.Append("\r\n");
sb.Append("Content-Type: application/octet-stream");
sb.Append("\r\n");
sb.Append("\r\n");
string strPostHeader = sb.ToString();
byte[] postHeaderBytes = Encoding.UTF8.GetBytes(strPostHeader);
//根据uri创建HttpWebRequest对象
HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(address);
httpReq.Method = "POST";
//对发送的数据不使用缓存
httpReq.AllowWriteStreamBuffering = false;
//设置获得响应的超时时间（300秒）
httpReq.Timeout = ;
httpReq.ContentType = "multipart/form-data; boundary=" + strBoundary;
long length = downData.Length + postHeaderBytes.Length + boundaryBytes.Length;
httpReq.ContentLength = length;
try
{
Stream postStream = httpReq.GetRequestStream();
//发送请求头部消息
postStream.Write(postHeaderBytes, , postHeaderBytes.Length); //发送内容消息
postStream.Write(downData, , downData.Length); //添加尾部的时间戳
postStream.Write(boundaryBytes, , boundaryBytes.Length); postStream.Close();
//获取服务器端的响应
WebResponse webRespon = httpReq.GetResponse();
Stream s = webRespon.GetResponseStream();
StreamReader sr = new StreamReader(s);
//读取服务器端返回的消息
returnValue = sr.ReadToEnd();
s.Close();
sr.Close();
}
catch { }
return returnValue;
}
9.将网址图片上传到指定的服务器(HttpWebRequest方法)
public static string PostUpDataUrlImg(string address, string fileNamePath, string saveName, string dataName, string body)
{
string returnValue = "";
Stream stream = GetWebUrlStream(fileNamePath, body);
List<byte> bytes = new List<byte>();
int temp = stream.ReadByte();
while (temp != -)
{
bytes.Add((byte)temp);
temp = stream.ReadByte();
}
byte[] WebUrlStream = bytes.ToArray();//时间戳
string strBoundary = "----------" + DateTime.Now.Ticks.ToString("x");
byte[] boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + strBoundary + "\r\n");
//请求头部信息
StringBuilder sb = new StringBuilder();
sb.Append("--");
sb.Append(strBoundary);
sb.Append("\r\n");
sb.AppendFormat("Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"", dataName, saveName);
sb.Append("\r\n");
sb.Append("Content-Type: application/octet-stream");
sb.Append("\r\n");
sb.Append("\r\n");
string strPostHeader = sb.ToString();
byte[] postHeaderBytes = Encoding.UTF8.GetBytes(strPostHeader);
//根据uri创建HttpWebRequest对象
HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(address);
httpReq.Method = "POST";
//对发送的数据不使用缓存
httpReq.AllowWriteStreamBuffering = false;
//设置获得响应的超时时间（30秒）
httpReq.Timeout = ;
httpReq.ContentType = "multipart/form-data; boundary=" + strBoundary;
long length = WebUrlStream.Length + postHeaderBytes.Length + boundaryBytes.Length;
long fileLength = WebUrlStream.Length;
httpReq.ContentLength = length;
try
{
Stream postStream = httpReq.GetRequestStream();
//发送请求头部消息
postStream.Write(postHeaderBytes, , postHeaderBytes.Length);
postStream.Write(WebUrlStream, , WebUrlStream.Length);
//添加尾部的时间戳
postStream.Write(boundaryBytes, , boundaryBytes.Length);
postStream.Close();
//获取服务器端的响应
WebResponse webRespon = httpReq.GetResponse();
Stream s = webRespon.GetResponseStream();
StreamReader sr = new StreamReader(s);
//读取服务器端返回的消息
returnValue = sr.ReadToEnd();
s.Close();
sr.Close();
}
catch
{ }return returnValue;
}
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