Call a phone number attribution query API from scratch

Since the life of a programmer, there are always more or less mention of some API (application interface), online various introductory tutorials, examples of a lot of, some just paste some code, and do not give comments, write demo when even compile can not pass. Below I started to introduce the detailed steps of lowering the mobile phone API

1. Preparation, check the relevant interface information, part of the commercial time charge

Interface address http://sj.apidata.cn/Request parameters

Name of parameter	parameter Description
Mobile	The phone number to be queried.
Callback	You need to specify callback when you need to return data in JSONP format.

Request Example http://sj.apidata.cn/?mobile=13488888888 return field

Field name	field type	Field description
status	integer	interface request Status: 0 = Request failed, 1 = Request succeeded
data	object	result data object returned
message	string	return message, reason for failure when request fails

Data node Field Description:

Field name	field Type	Field Description
Prefix	Integer	Mobile number segment.
Mobile	String	Search for mobile phone number
Province	String	Name of the province to which it belongs.
City	String	City name of the place of attribution
Isp	String	Name of the carrier to which it belongs
Code	Integer	Place of attribution Administrative number
ZipCode	Integer	Place of Attribution postal code
Types	String	Mobile Phone number card information

return example{

    "Status":1,"Data":{"prefix":138 "province":  "Yunnan"  "City":  "ISP":  "move"  "code": 871 "ZipCode": 650500 "types":  "China Mobile GSM"   "mobile": " 13888888888 "}                 " success "} 
 
 
 2. Sending requests, processing return results              

  Private voidGetnuminform (stringnum) {            stringURL ="http://sj.apidata.cn/?mobile="+num; //Please find the numbersHttpWebRequest res =(HttpWebRequest) webrequest.create (URL); //Method NameRes. Method ="GET"; //access to operatesHttpWebResponse resp =(HttpWebResponse) Res.                       GetResponse (); //To read a digital streamStreamReader sr =NewStreamReader (resp.            GetResponseStream (), Encoding.UTF8); //encode into a string            stringresphtml =Sr.                        ReadToEnd (); #regionDemo1//Get JSON imagesNumdes numdes = jsonconvert.deserializeobject<numdes>(resphtml); stringCity = numdes.data[" City"].            ToString (); stringISP = numdes.data["ISP"].            ToString (); #endregion                        #regionDemo2Jobject numdbers=Jobject.parse (resphtml); stringc = numdbers["Data"][" City"].            ToString (); #endregionTextBox2.Text= City +ISP; }

3. Call the serialization library, otherwise unrecognized jobject, JsonConvert object, vs comes with a nuget package, which has the Newtonsoft package we need, just need to install to

Open: Tools-nuget Package Manager-Package Manager console

Input: Install-package Newtonsoft.json

If you are prompted to fail the installation, or if the version is inconsistent and you need to upgrade to the latest version of NuGet, then uninstall the NuGet package in the management list and then reinstall the latest version

4. For the Numdes object above Demo1, you need to create a new entity class that creates a property corresponding to the interface Web site return value, in http://sj.apidata.cn/, the fields returned are: stasus, data, message, So write the corresponding member field in the new class, as follows

   Public class Numdes    {        publicintgetset;}          Public dictionary<string,stringgetset;}          Public string Get Set ; }    }

5. Start the program and get the returned city, operator

   
 
 
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Zero-based call to a phone number attribution query API