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：

 1 @{
 2     ViewBag.Title = "Index";
 3     Layout = null;
 4 }
 5 @*<script src="~/Views/js/jquery-1.7.1.js"></script>*@
 6 @*<script src="~/Views/js/jquery.min.js"></script>*@
 7 <script src="~/Scripts/jquery-1.8.2.min.js"></script>
 8 <h2>Index</h2>
 9 请输入手机号码：<input type="text" id="inputPhoneNum" value=""/><br />
10 <input type="button" value="获取归属地" id="getPhoneData"/>
11 <div id="content"></div>
12 <script>
13     $(function () {
14         $(‘#getPhoneData‘).click(function () {
15             var str = "";
16             var inputPhoneNum = $("#inputPhoneNum").val();
17             $.ajax({
18                 url: "/APITest/GetPhoneAreaDatet",
19                 data: { phoneNum: inputPhoneNum },
20                 dataType: "json",
21                 success: function (result) {
22                     $(‘#content‘).empty();   //清空resText里面的所有内容
23                     var json = result;
24                     var resobj = JSON.parse(json);
25                     //{province:‘广东‘,cityname:‘广州‘}
26                     $(‘#content‘).html("手机号码" + inputPhoneNum + "的归属地为：" + resobj.province + resobj.cityname);
27                 }
28             });
29         });
30     });
31 </script>

　　2，后台代码：

 1  public class APITestController : Controller
 2     {
 3         //
 4         // GET: /APITest/
 5
 6         public ActionResult Index()
 7         {
 8             return View();
 9         }
10
11         public JsonResult GetPhoneAreaDatet() {
12             //1.0 确定url  网络爬虫（蜘蛛）
13             string phoneNum = Request.QueryString["phoneNum"];
14             string url = "http://virtual.paipai.com/extinfo/GetMobileProductInfo";
15             string paras = string.Format("mobile={0}&amount={1}&callname={2}"
16                , phoneNum
17                , 10000
18                , "getPhoneNumInfoExtCallback");
19             string Result = "";
20             HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
21             request.Method = "POST";
22             //做请求
23             request.ContentType = "application/x-www-form-urlencoded; charset=gb2312";
24             request.MaximumAutomaticRedirections = 4;
25             request.MaximumResponseHeadersLength = 4;
26
27             byte[] requestBytes = System.Text.Encoding.UTF8.GetBytes(paras);
28             request.ContentLength = requestBytes.Length;
29
30             Stream requestStream = request.GetRequestStream();
31             requestStream.Write(requestBytes, 0, requestBytes.Length);
32             requestStream.Close();
33
34             //request.Credentials = CredentialCache.DefaultCredentials;
35             HttpWebResponse response = (HttpWebResponse)request.GetResponse();
36
37             //读结果
38             Stream receiveStream = response.GetResponseStream();
39             StreamReader readStream = new StreamReader(receiveStream, Encoding.GetEncoding("gb2312"));
40             Result = readStream.ReadToEnd();
41             response.Close();
42             readStream.Dispose();
43             //{mobile:‘13926231057‘,province:‘广东‘,isp:‘中国移动‘,stock:‘1‘,amount:‘10000‘,maxprice:‘0‘,minprice:‘0‘,cityname:‘广州‘}
44
45             int indexOfProFrist = Result.IndexOf("province")+10;
46             int indexOfProEnd = Result.IndexOf("isp")-2;
47             int indexOfCityFrist = Result.LastIndexOf("cityname")+10;
48             int indexOfCityEnd = Result.IndexOf(‘}‘)-1;
49             string strPro = Result.Substring(indexOfProFrist,indexOfProEnd-indexOfProFrist);
50             string strCity = Result.Substring(indexOfCityFrist, indexOfCityEnd - indexOfCityFrist);
51             string strJsObj = "{\"province\":\"" + strPro + "\",\"cityname\":\"" + strCity + "\"}";
52             //int indexOfName
53             return Json(strJsObj, JsonRequestBehavior.AllowGet);
54         }
55     }