基于C#的汇率接口调用代码实例.doc

1、基于 C#的汇率接口调用代码实例代码描述：基于 C#的汇率接口调用代码实例代码平台：聚合数据using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Net;using System.IO;using Xfrog.Net;using System.Diagnostics;using System.Web;/-/ 汇率 调用示例代 码 聚合数据/ 在线 接口文档： http:/ 代码 中 JsonObject类下载地址: http:/ ConsoleAPIclass

2、 Programstatic void Main(string args)string appkey = “*“; /配置您申请的 appkey/1.常用汇率查询string url1 = “http:/ parameters1 = new Dictionary();parameters1.Add(“key“, appkey);/你申请的 keystring result1 = sendPost(url1, parameters1, “get“);JsonObject newObj1 = new JsonObject(result1);String errorCode1 = newObj1“e

3、rror_code“.Value;if (errorCode1 = “0“)Debug.WriteLine(“成功“ );Debug.WriteLine(newObj1);else/Debug.WriteLine(“失败“);Debug.WriteLine(newObj1“error_code“.Value+“:“+newObj1“reason“.Value);/2.货币列表string url2 = “http:/ parameters2 = new Dictionary();parameters2.Add(“key“, appkey);/你申请的 keystring result2 = s

4、endPost(url2, parameters2, “get“);JsonObject newObj2 = new JsonObject(result2);String errorCode2 = newObj2“error_code“.Value;if (errorCode2 = “0“)Debug.WriteLine(“成功“ );Debug.WriteLine(newObj2);else/Debug.WriteLine(“失败“);Debug.WriteLine(newObj2“error_code“.Value+“:“+newObj2“reason“.Value);/3.实时汇率查询换

5、算string url3 = “http:/ parameters3 = new Dictionary();parameters3.Add(“from“ , “); /转换汇 率前的货币代码parameters3.Add(“to“ , “); /转换汇率成的货币代码parameters3.Add(“key“, appkey);/你申请的 keystring result3 = sendPost(url3, parameters3, “get“);JsonObject newObj3 = new JsonObject(result3);String errorCode3 = newObj3“er

6、ror_code“.Value;if (errorCode3 = “0“)Debug.WriteLine(“成功“ );Debug.WriteLine(newObj3);else/Debug.WriteLine(“失败“);Debug.WriteLine(newObj3“error_code“.Value+“:“+newObj3“reason“.Value);/ / Http (GET/POST)/ / 请求 URL/ 请求参数/ 请求方法/ 响 应内容static string sendPost(string url, IDictionary parameters, string metho

7、d)if (method.ToLower() = “post“)HttpWebRequest req = null;HttpWebResponse rsp = null;System.IO.Stream reqStream = null;tryreq = (HttpWebRequest)WebRequest.Create(url);req.Method = method;req.KeepAlive = false;req.ProtocolVersion = HttpVersion.Version10;req.Timeout = 5000;req.ContentType = “applicati

8、on/x-www-form-urlencoded;charset=utf-8“;byte postData = Encoding.UTF8.GetBytes(BuildQuery(parameters, “utf8“);reqStream = req.GetRequestStream();reqStream.Write(postData, 0, postData.Length);rsp = (HttpWebResponse)req.GetResponse();Encoding encoding = Encoding.GetEncoding(rsp.CharacterSet);return Ge

9、tResponseAsString(rsp, encoding);catch (Exception ex)return ex.Message;finallyif (reqStream != null) reqStream.Close();if (rsp != null) rsp.Close();else/创建请求HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url + “?“ + BuildQuery(parameters, “utf8“);/GET请求request.Method = “GET“;request.Read

10、WriteTimeout = 5000;request.ContentType = “text/html;charset=UTF-8“;HttpWebResponse response = (HttpWebResponse)request.GetResponse();Stream myResponseStream = response.GetResponseStream();StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding(“utf-8“);/返回内容string retS

11、tring = myStreamReader.ReadToEnd();return retString;/ / 组装普通文本 请求参数。/ / Key-Value 形式请求参数字典/ URL编码后的请求数据static string BuildQuery(IDictionary parameters, string encode)StringBuilder postData = new StringBuilder();bool hasParam = false;IEnumerator dem = parameters.GetEnumerator();while (dem.MoveNext()s

12、tring name = dem.Current.Key;string value = dem.Current.Value;/ 忽略参数名或参数值为空的参数if (!string.IsNullOrEmpty(name)/postData.Append(name);postData.Append(“=“);if (encode = “gb2312“)postData.Append(HttpUtility.UrlEncode(value, Encoding.GetEncoding(“gb2312“);else if (encode = “utf8“)postData.Append(HttpUtil

13、ity.UrlEncode(value, Encoding.UTF8);elsepostData.Append(value);hasParam = true;return postData.ToString();/ / 把响应流转换为 文本。/ / 响应流对象/ 编码方式/ 响 应文本static string GetResponseAsString(HttpWebResponse rsp, Encoding encoding)System.IO.Stream stream = null;StreamReader reader = null;try/ 以字符流的方式读取 HTTP 响应stream = rsp.GetResponseStream();reader = new StreamReader(stream, encoding);return reader.ReadToEnd();finally/ 释放资源if (reader != null) reader.Close();if (stream != null) stream.Close();if (rsp != null) rsp.Close();