利用WebApi获取手机号码归属地

前述：

　　在WebApi中，涉及到一个重要的类，HttpWebRequest。

　　学习link：httpwebrequest详解

示例演示：

代码示例：

　　1、前端代码：

 @{
     ViewBag.Title = "Index";
     Layout = null;
 }
 @*<script src="~/Views/js/jquery-1.7.1.js"></script>*@
 @*<script src="~/Views/js/jquery.min.js"></script>*@
 <script src="~/Scripts/jquery-1.8.2.min.js"></script>
 <h2>Index</h2>
 请输入手机号码：<input type="text" id="inputPhoneNum" value=""/><br />
 <input type="button" value="获取归属地" id="getPhoneData"/>
 <div id="content"></div>
 <script>
     $(function () {
         $('#getPhoneData').click(function () {
             var str = "";
             var inputPhoneNum = $("#inputPhoneNum").val();
             $.ajax({
                 url: "/APITest/GetPhoneAreaDatet",
                 data: { phoneNum: inputPhoneNum },
                 dataType: "json",
                 success: function (result) {
                     $('#content').empty();   //清空resText里面的所有内容
                     var json = result;
                     var resobj = JSON.parse(json);
                     //{province:'广东',cityname:'广州'}
                     $('#content').html("手机号码" + inputPhoneNum + "的归属地为：" + resobj.province + resobj.cityname);
                 }
             });
         });
     });
 </script>

　　2，后台代码：

  public class APITestController : Controller
     {
         //
         // GET: /APITest/

         public ActionResult Index()
         {
             return View();
         }

         public JsonResult GetPhoneAreaDatet() {
             //1.0 确定url  网络爬虫（蜘蛛）
             string phoneNum = Request.QueryString["phoneNum"];
             string url = "http://virtual.paipai.com/extinfo/GetMobileProductInfo";
             string paras = string.Format("mobile={0}&amount={1}&callname={2}"
                , phoneNum
                ,
                , "getPhoneNumInfoExtCallback");
             string Result = "";
             HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
             request.Method = "POST";
             //做请求
             request.ContentType = "application/x-www-form-urlencoded; charset=gb2312";
             request.MaximumAutomaticRedirections = ;
             request.MaximumResponseHeadersLength = ;

             byte[] requestBytes = System.Text.Encoding.UTF8.GetBytes(paras);
             request.ContentLength = requestBytes.Length;

             Stream requestStream = request.GetRequestStream();
             requestStream.Write(requestBytes, , requestBytes.Length);
             requestStream.Close();

             //request.Credentials = CredentialCache.DefaultCredentials;
             HttpWebResponse response = (HttpWebResponse)request.GetResponse();

             //读结果
             Stream receiveStream = response.GetResponseStream();
             StreamReader readStream = new StreamReader(receiveStream, Encoding.GetEncoding("gb2312"));
             Result = readStream.ReadToEnd();
             response.Close();
             readStream.Dispose();
             //{mobile:'13926231057',province:'广东',isp:'中国移动',stock:'1',amount:'10000',maxprice:'0',minprice:'0',cityname:'广州'}

             int indexOfProFrist = Result.IndexOf("province")+;
             int indexOfProEnd = Result.IndexOf("isp")-;
             int indexOfCityFrist = Result.LastIndexOf("cityname")+;
             int indexOfCityEnd = Result.IndexOf('}')-;
             string strPro = Result.Substring(indexOfProFrist,indexOfProEnd-indexOfProFrist);
             string strCity = Result.Substring(indexOfCityFrist, indexOfCityEnd - indexOfCityFrist);
             string strJsObj = "{\"province\":\"" + strPro + "\",\"cityname\":\"" + strCity + "\"}";
             //int indexOfName
             return Json(strJsObj, JsonRequestBehavior.AllowGet);
         }
     }