長尾關鍵詞(Long Tail Keyword)是指網站上的非目標關鍵詞但與目標關鍵詞相關的也可以帶來搜索流量的組合型關鍵詞。對于做SEO的人來說，這個名字再也熟悉不過了，但是如何來挖掘長尾關鍵詞，對于沒有數據或者一定計算機知識的人來說，還是很有難度的。所以這里附上非常簡單的辦法，只要幾行代碼就能輕松搞定。

# -*- coding: utf-8 -*-

# flake8: noqa

__author__ = 'wukong'

import urllib

from urllib import urlencode

#配置您申請的appKey和openId

app_key="***"

open_id="***"

"""

request_url 請求地址

params 請求參數

method 請求方法

"""

def request_content(request_url,params,method):

params = urlencode(params)

if method and method.lower() =="get":

f = urllib.urlopen("%s?%s" % (request_url, params))

else:

f = urllib.urlopen(request_url, params)

content = f.read()

print content

def main():

domain="http://api.xiaocongjisuan.com/"

servlet="data/longtailword/mining"

method="get"

request_url=domain+servlet

#字典

params ={}

params["appKey"]=app_key

params["openId"]=open_id

#變動部分

params["keyword"]="學前教育"

params["upLimit"]=50

params["minLen"]=30

params["lSort"]="up"

request_content(request_url,params,method)

if __name__ == '__main__':

main()

當然也可以用c#來實現

using System;

using System.Collections.Generic;

using System.Text;

using System.Net;

using System.IO;

namespace ConsoleApplication1

{

class Program

{

private static string appKey="yours";

private static string openId = "yours";

static string getResponseAsString(HttpWebResponse rsp, Encoding encoding)

{

System.IO.Stream stream = null;

StreamReader reader = null;

try

{

// 以字符流的方式讀取HTTP響應

stream = rsp.GetResponseStream();

reader = new StreamReader(stream, encoding);

return reader.ReadToEnd();

}

finally

{

// 釋放資源

if (reader != null) reader.Close();

if (stream != null) stream.Close();

if (rsp != null) rsp.Close();

}

}

/*

* parameters 參數

* encode 編碼

*/

static string buildQuery(IDictionary parameters, string encode)

{

StringBuilder postData = new StringBuilder();

bool hasParam = false;

IEnumerator> dem = parameters.GetEnumerator();

while (dem.MoveNext())

{

string name = dem.Current.Key;

string value = dem.Current.Value.ToString(); ;

// 忽略參數名或參數值為空的參數

if (!string.IsNullOrEmpty(name))//&& !string.IsNullOrEmpty(value)

{

if (hasParam)

{

postData.Append("&");

}

postData.Append(name);

postData.Append("=");

if (encode == "gb2312")

{

postData.Append(System.Web.HttpUtility.UrlEncode(value, Encoding.GetEncoding("gb2312")));

}

else if (encode == "utf8")

{

postData.Append(System.Web.HttpUtility.UrlEncode(value, Encoding.UTF8));

}

else

{

postData.Append(value);

}

hasParam = true;

}

}

return postData.ToString();

}

/**

*

* @param url 請求地址

* @param params 請求參數

* @param method 請求方法

* @return 請求結果

* @throws Exception

*/

static string requestContent(string url, IDictionary 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

{

//創建請求

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url + "?" + buildQuery(parameters, "utf8"));

//GET請求

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"));

//返回內容

string retString = myStreamReader.ReadToEnd();

return retString;

}

}

static void Main(string[] args)

{

String domain = "http://api.xiaocongjisuan.com/";

String servlet = "data/longtailword/mining";

String method = "get";

String url = domain + servlet;

var parameters = new Dictionary();

parameters.Add("appKey", appKey);

parameters.Add("openId", openId);

//變動部分

parameters.Add("keyword", "學前教育");

parameters.Add("upLimit", 50);

parameters.Add("minLen", 30);

parameters.Add("lSort", "up");

string result = requestContent(url, parameters, method);

Console.WriteLine(result);

Console.Read();

}

}

}

其他的語言實現方式可以跳轉到長尾關鍵詞接口去查看,代碼上還是非常簡潔的，就也不再做過多解釋。

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