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+using System.Web;
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+
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+namespace OASystem.API.OAMethodLib.JuHeAPI
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+{
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+ /// <summary>
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+ /// 集合接口 - 汇率转换tools
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+ /// </summary>
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+ public static class ExchangeRateTool
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+ {
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+ //初始化 appkey
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+ static string appKey = "0f5429e9fbb8637c0ff3f14bbb42c732";
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+
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+ /// <summary>
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+ /// Http (GET/POST)
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+ /// </summary>
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+ /// <param name="url">请求URL</param>
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+ /// <param name="parameters">请求参数</param>
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+ /// <param name="method">请求方法</param>
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+ /// <returns>响应内容</returns>
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+ static string SendRequest(string url, IDictionary<string, string> parameters, string method)
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+ {
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+ if (method.ToLower() == "post")
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+ {
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+ HttpWebRequest req = null;
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+ HttpWebResponse rsp = null;
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+ System.IO.Stream reqStream = null;
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+ try
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+ {
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+ req = (HttpWebRequest)WebRequest.Create(url);
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+ req.Method = method;
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+ req.KeepAlive = false;
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+ req.ProtocolVersion = HttpVersion.Version10;
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+ req.Timeout = 5000;
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+ req.ContentType = "application/x-www-form-urlencoded;charset=utf-8";
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+ byte[] postData = Encoding.UTF8.GetBytes(BuildQuery(parameters, "utf8"));
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+ reqStream = req.GetRequestStream();
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+ reqStream.Write(postData, 0, postData.Length);
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+ rsp = (HttpWebResponse)req.GetResponse();
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+ Encoding encoding = Encoding.GetEncoding(rsp.CharacterSet);
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+ return GetResponseAsString(rsp, encoding);
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+ }
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+ catch (Exception ex)
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+ {
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+ return ex.Message;
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+ }
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+ finally
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+ {
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+ if (reqStream != null) reqStream.Close();
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+ if (rsp != null) rsp.Close();
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+ }
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+ }
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+ else
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+ {
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+ //创建请求
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+ HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url + "?" + BuildQuery(parameters, "utf8"));
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+
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+ //GET请求
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+ request.Method = "GET";
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+ request.ReadWriteTimeout = 5000;
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+ request.ContentType = "text/html;charset=UTF-8";
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+ HttpWebResponse response = (HttpWebResponse)request.GetResponse();
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+ Stream myResponseStream = response.GetResponseStream();
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+ StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
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+
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+ //返回内容
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+ string retString = myStreamReader.ReadToEnd();
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+ return retString;
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+ }
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+ }
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+
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+ /// <summary>
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+ /// 组装普通文本请求参数。
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+ /// </summary>
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+ /// <param name="parameters">Key-Value形式请求参数字典</param>
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+ /// <returns>URL编码后的请求数据</returns>
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+ static string BuildQuery(IDictionary<string, string> parameters, string encode)
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+ {
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+ StringBuilder postData = new StringBuilder();
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+ bool hasParam = false;
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+ IEnumerator<KeyValuePair<string, string>> dem = parameters.GetEnumerator();
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+ while (dem.MoveNext())
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+ {
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+ string name = dem.Current.Key;
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+ string value = dem.Current.Value;
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+ // 忽略参数名或参数值为空的参数
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+ if (!string.IsNullOrEmpty(name))//&& !string.IsNullOrEmpty(value)
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+ {
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+ if (hasParam)
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+ {
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+ postData.Append("&");
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+ }
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+ postData.Append(name);
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+ postData.Append("=");
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+ if (encode == "gb2312")
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+ {
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+ postData.Append(HttpUtility.UrlEncode(value, Encoding.GetEncoding("gb2312")));
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+ }
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+ else if (encode == "utf8")
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+ {
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+ postData.Append(HttpUtility.UrlEncode(value, Encoding.UTF8));
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+ }
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+ else
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+ {
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+ postData.Append(value);
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+ }
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+ hasParam = true;
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+ }
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+ }
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+ return postData.ToString();
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+ }
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+
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+ /// <summary>
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+ /// 把响应流转换为文本。
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+ /// </summary>
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+ /// <param name="rsp">响应流对象</param>
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+ /// <param name="encoding">编码方式</param>
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+ /// <returns>响应文本</returns>
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+ static string GetResponseAsString(HttpWebResponse rsp, Encoding encoding)
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+ {
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+ System.IO.Stream stream = null;
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+ StreamReader reader = null;
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+ try
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+ {
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+ // 以字符流的方式读取HTTP响应
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+ stream = rsp.GetResponseStream();
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+ reader = new StreamReader(stream, encoding);
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+ return reader.ReadToEnd();
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+ }
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+ finally
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+ {
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+ // 释放资源
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+ if (reader != null) reader.Close();
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+ if (stream != null) stream.Close();
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+ if (rsp != null) rsp.Close();
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+ }
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+ }
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+
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+ }
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+}
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