基于C#的电视台节目表接口调用代码

接口地址：http://www.juhe.cn/docs/api/id/129

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;

//----------------------------------
// 电视节目时间表调用示例代码 － 聚合数据
// 在线接口文档：http://www.juhe.cn/docs/129
// 代码中JsonObject类下载地址:http://download.csdn.net/download/gcm3206021155665/7458439
//----------------------------------

namespace ConsoleAPI
{
  class Program
  {
    static void Main(string[] args)
    {
      string appkey = "*******************"; //配置您申请的appkey

      //1.电视台分类
      string url1 = "http://japi.juhe.cn/tv/getCategory";

      var parameters1 = new Dictionary<string, string>();

      parameters1.Add("key", appkey);//你申请的key

      string result1 = sendPost(url1, parameters1, "get");

      JsonObject newObj1 = new JsonObject(result1);
      String errorCode1 = newObj1["error_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.电视频道列表
      string url2 = "http://japi.juhe.cn/tv/getChannel";

      var parameters2 = new Dictionary<string, string>();

      parameters2.Add("key", appkey);//你申请的key
      parameters2.Add("pId" , ""); //电视分类id

      string result2 = sendPost(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.电视台节目单列表
      string url3 = "http://japi.juhe.cn/tv/getProgram";

      var parameters3 = new Dictionary<string, string>();

      parameters3.Add("key", appkey);//你申请的key
      parameters3.Add("code" , ""); //频道代码
      parameters3.Add("date" , ""); //日期(格式yyyy-MM-dd,默认为当天日期)

      string result3 = sendPost(url3, parameters3, "get");

      JsonObject newObj3 = new JsonObject(result3);
      String errorCode3 = newObj3["error_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);
      }

    }

    /// <summary>
    /// Http (GET/POST)
    /// </summary>
    /// <param name="url">请求URL</param>
    /// <param name="parameters">请求参数</param>
    /// <param name="method">请求方法</param>
    /// <returns>响应内容</returns>
    static string sendPost(string url, IDictionary<string, string> parameters, string method)
    {
      if (method.ToLower() == "post")
      {
        HttpWebRequest req = null;
        HttpWebResponse rsp = null;
        System.IO.Stream reqStream = null;
        try
        {
          req = (HttpWebRequest)WebRequest.Create(url);
          req.Method = method;
          req.KeepAlive = false;
          req.ProtocolVersion = HttpVersion.Version10;
          req.Timeout = 5000;
          req.ContentType = "application/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 GetResponseAsString(rsp, encoding);
        }
        catch (Exception ex)
        {
          return ex.Message;
        }
        finally
        {
          if (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.ReadWriteTimeout = 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 retString = myStreamReader.ReadToEnd();
        return retString;
      }
    }

    /// <summary>
    /// 组装普通文本请求参数。
    /// </summary>
    /// <param name="parameters">Key-Value形式请求参数字典</param>
    /// <returns>URL编码后的请求数据</returns>
    static string BuildQuery(IDictionary<string, string> parameters, string encode)
    {
      StringBuilder postData = new StringBuilder();
      bool hasParam = false;
      IEnumerator<KeyValuePair<string, string>> dem = parameters.GetEnumerator();
      while (dem.MoveNext())
      {
        string 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))//&& !string.IsNullOrEmpty(value)
        {
          if (hasParam)
          {
            postData.Append("&");
          }
          postData.Append(name);
          postData.Append("=");
          if (encode == "gb2312")
          {
            postData.Append(HttpUtility.UrlEncode(value, Encoding.GetEncoding("gb2312")));
          }
          else if (encode == "utf8")
          {
            postData.Append(HttpUtility.UrlEncode(value, Encoding.UTF8));
          }
          else
          {
            postData.Append(value);
          }
          hasParam = true;
        }
      }
      return postData.ToString();
    }

    /// <summary>
    /// 把响应流转换为文本。
    /// </summary>
    /// <param name="rsp">响应流对象</param>
    /// <param name="encoding">编码方式</param>
    /// <returns>响应文本</returns>
    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();
      }
    }
  }
}