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December 23, 2015 08:09
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获取 http://www.dmozdir.org 上分类好的域名
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/* | |
author: liuzhe | |
purpose: get classified domains from www.dmozdir.org | |
*/ | |
package main | |
import ( | |
"net/http" | |
"fmt" | |
"io/ioutil" | |
"regexp" | |
"labix.org/v2/mgo" | |
) | |
const urlTem = "http://www.dmozdir.org/Category/?SmallPath=%d&PAGEList=%d" | |
type FetchTarget struct { | |
smallPath int8 | |
pageList int8 | |
category string | |
} | |
type FetchRes struct { | |
status string | |
Category string | |
Address string | |
isEnd bool | |
} | |
type CateData struct { | |
category string | |
smallPath int8 | |
pageStart int8 | |
pageStop int8 | |
} | |
func fetch(fetchTarget FetchTarget, ch chan FetchRes) { | |
fetchRes := FetchRes{} | |
fetchRes.isEnd = false | |
fetchRes.Category = fetchTarget.category | |
url := fmt.Sprintf(urlTem, fetchTarget.smallPath, fetchTarget.pageList) | |
resp, err := http.Get(url) | |
if err != nil { | |
fetchRes.status = "err" | |
ch <- fetchRes | |
return | |
} | |
defer resp.Body.Close() | |
content, err := ioutil.ReadAll(resp.Body) | |
if err != nil { | |
fetchRes.status = "err" | |
ch <- fetchRes | |
return | |
} | |
re, _ := regexp.Compile("<address>[^\\s]*</address>") | |
match_list := re.FindAllString(string(content), -1) | |
for _, v := range math_list { | |
fetchRes.Address = v[9:len(v)-10] | |
ch <- fetchRes | |
} | |
fetchRes.isEnd = true | |
ch <- fetchRes | |
return | |
} | |
func main() { | |
cateDataList := []CateData{ | |
CateData{"招聘", 84, 1, 36}, | |
CateData{"电子商务", 110, 1, 61} | |
} | |
chList := []chan FetchRes{} | |
for _, cateData := range cateDataList { | |
for pageNu := cateData.pageStart; pageNu <= cateData.pageStop; pageNu++ { | |
fetchTarget := FetchTarget{cateData.smallPath, pageNu, cateData.category} | |
ch := make(chan FetchRes) | |
chList = append(chList, ch) | |
go fetch(fetchTarget, ch) | |
} | |
} | |
session, _ := mgo.Dial("localhost") | |
c := session.DB("corpus").C("dmoz_address") | |
for _, ch := range chList { | |
for { | |
fetchRes := <- ch | |
if fetchRes.isEnd { | |
break | |
} | |
c.Insert(fetchRes) | |
fmt.Println(fetchRes.Address) | |
} | |
} | |
} |
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