web 接口,常用的請求方式有兩種
GET
POST
public?static?class?Http{
private?static?Encoding?GetEncoding(HttpWebResponse?response)
{
var?encodingText?=?response.ContentEncoding;
if?(string.IsNullOrEmpty(encodingText))
encodingText?=?"UTF-8";
return?Encoding.GetEncoding(encodingText);
}
private?static?string?JoinParam(IDictionary<string,?string>?input)
{
var?sb?=?new?StringBuilder();
using?(var?e?=?input.GetEnumerator())
{
if?(e.MoveNext())
{
var?key?=?HttpUtility.UrlEncode(e.Current.Key);
var?value?=?HttpUtility.UrlEncode(e.Current.Value);
sb.AppendFormat("{0}={1}",?key,?value);
while?(e.MoveNext())
{
key?=?HttpUtility.UrlEncode(e.Current.Key);
value?=?HttpUtility.UrlEncode(e.Current.Value);
sb.AppendFormat("&{0}={1}",?key,?value);
}
}
}
return?sb.ToString();
}
public?static?string?PostStream(string?url,?IDictionary<string,?string>?header?=?null,?Stream?stream?=?null,?Encoding?encoding?=?null)
{
var?request?=?(HttpWebRequest)WebRequest.Create(url);
request.Method?=?WebRequestMethods.Http.Post;
if?(header?!=?null)
{
foreach?(var?key?in?header.Keys)
{
var?value?=?header[key];
switch?(key)
{
case?"Content-Type":
request.ContentType?=?value;
break;
case?"Content-Length":
request.ContentLength?=?Convert.ToInt64(value);
break;
default:
request.Headers.Set(key,?value);
break;
}
}
}
if?(stream?!=?null)
{
request.ContentLength?=?stream.Length;
using?(var?rStream?=?request.GetRequestStream())
{
stream.CopyTo(rStream);
}
}
using?(var?response?=?(HttpWebResponse)request.GetResponse())
{
using?(var?rStream?=?response.GetResponseStream())
{
if?(encoding?==?null)
{
encoding?=?GetEncoding(response);
}
using?(var?reader?=?new?StreamReader(rStream,?encoding))
return?reader.ReadToEnd();
}
}
}
public?static?string?Post(string?url,?IDictionary<string,?string>?header?=?null,?IDictionary<string,?string>?input?=?null)
{
Stream?dst?=?null;
if?(input?!=?null)
{
var?str?=?JoinParam(input);
var?bytes?=?Encoding.UTF8.GetBytes(str);
dst?=?new?MemoryStream(bytes);
}
var?result?=?PostStream(url,?header,?dst);
dst?.Dispose();
return?result;
}
public?static?string?Get(string?url,?IDictionary<string,?string>?header?=?null,?IDictionary<string,?string>?input?=?null)
{
var?request?=?(HttpWebRequest)WebRequest.Create(url);
request.Method?=?WebRequestMethods.Http.Get;
if?(header?!=?null)
{
foreach?(var?key?in?header.Keys)
request.Headers[key]?=?header[key];
}
if?(input?!=?null)
{
url?+=?"?"?+?JoinParam(input);
}
using?(var?response?=?(HttpWebResponse)request.GetResponse())
{
using?(var?rStream?=?response.GetResponseStream())
{
var?encoding?=?GetEncoding(response);
using?(var?reader?=?new?StreamReader(rStream,?encoding))
return?reader.ReadToEnd();
}
}
}
}
提供了兩種方式的請求實現。
示例：
var?kvParam?=?new?Dictionary<string,?string>();kvParam["name"]?=?"xxx";
kvParam["password"]?=?"xxx";
var?result?=?Http.Post("/login.php",?null,?kvParam);