public class HttpHelp
{
string boundary = "----------" + DateTime.Now.Ticks.ToString();
public Dictionary<string, object> parameters = new Dictionary<string, object>();
public async Task<Stream> Get(string url)
{
try
{
var request = (HttpWebRequest)WebRequest.Create(new Uri(url));
request.Method = "GET";
if (StaticData.Cookie != null && StaticData.Cookie != "")
{
request.Headers["Cookie"] = StaticData.Cookie;
}
request.UserAgent = @"Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/6.0)";
var response = await request.GetResponseAsync();
return response.GetResponseStream();
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
return null;
}
}
public async Task<Stream> Post(string url)
{
try
{
var request = (HttpWebRequest)WebRequest.Create(new Uri(url));
request.Method = "POST";
if (StaticData.Cookie != null && StaticData.Cookie != "")
{
request.Headers["Cookie"] = StaticData.Cookie;
}
request.UserAgent = @"Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/6.0)";
request.ContentType = string.Format("multipart/form-data; boundary={0}", boundary);
var stream = await request.GetRequestStreamAsync();
writeMultipartObject(stream, parameters);
stream.Close();
var response = await request.GetResponseAsync();
foreach (var key in response.Headers.AllKeys)
{
if (key == "Set-Cookie")
{
StaticData.Cookie = response.Headers[key];
}
}
return response.GetResponseStream();
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
return null;
}
}
public void writeMultipartObject(Stream stream, object data)
{
try
{
StreamWriter writer = new StreamWriter(stream);
if (data != null)
{
foreach (var entry in data as Dictionary<string, object>)
{
WriteEntry(writer, entry.Key, entry.Value);
}
}
writer.Write("--");
writer.Write(boundary);
writer.WriteLine("--");
writer.Flush();
}
catch { }
}
private void WriteEntry(StreamWriter writer, string key, object value)
{
try
{
if (value != null)
{
writer.Write("--");
writer.WriteLine(boundary);
if (value is byte[])
{
byte[] ba = value as byte[];
writer.WriteLine(@"Content-Disposition: form-data; name=""{0}""; filename=""{1}""", key, Guid.NewGuid().ToString() + ".jpg");
writer.WriteLine(@"Content-Type: image/jpeg");
writer.WriteLine(@"Content-Length: " + ba.Length);
writer.WriteLine();
writer.Flush();
Stream output = writer.BaseStream;
output.Write(ba, 0, ba.Length);
output.Flush();
writer.WriteLine();
}
else
{
writer.WriteLine(@"Content-Disposition: form-data; name=""{0}""", key);
writer.WriteLine();
writer.WriteLine(value.ToString());
}
}
}
catch { }
}
}
WriteEntry中加入了post发送图片的支持