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get.go
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get.go
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//批量获取搜狗拼音词库数据。
package main
import (
//"bufio"
"errors"
"flag"
"fmt"
"io/ioutil"
"log"
"net/http"
"os"
"regexp"
"runtime"
"strconv"
"strings"
//"time"
)
var num *int = flag.Int("n", 40, "please input a num like 1024")
var cupNum int = runtime.NumCPU()
var c = make(chan int, cupNum) //设置最大并发
func main() {
flag.Usage = show_usage
flag.Parse()
if *num == 0 {
show_usage()
return
}
runtime.GOMAXPROCS(cupNum) //设置cpu的核的数量,从而实现高并发
var (
logFileDir string
downDir string
)
logFileDir = "./log/"
downDir = "./data/"
if !isDirExists(logFileDir) { //目录不存在,则进行创建。
err := os.MkdirAll(logFileDir, 777) //递归创建目录,linux下面还要考虑目录的权限设置。
if err != nil {
panic(err)
}
}
if !isDirExists(downDir) { //目录不存在,则进行创建。
err := os.MkdirAll(downDir, 777) //递归创建目录,linux下面还要考虑目录的权限设置。
if err != nil {
panic(err)
}
}
logfile, _ := os.OpenFile(logFileDir+"ijibu.log", os.O_RDWR|os.O_CREATE, 0)
logger := log.New(logfile, "\r\n", log.Ldate|log.Ltime|log.Llongfile)
defer logfile.Close()
for i := 0; i < cupNum; i++ {
go work(logger, logfile, downDir)
}
start()
}
func start() {
id := 1
for {
c <- id
id++
}
}
func work(logger *log.Logger, logfile *os.File, downDir string) {
for {
id := <-c
code := strconv.Itoa(id)
getDict(logger, logfile, downDir, code)
}
}
func getDict(logger *log.Logger, logfile *os.File, downDir string, code string) {
getUrl := "http://pinyin.sogou.com/dict/cell.php?id=" + code
client := &http.Client{CheckRedirect: myRedirect}
resp, err := client.Get(getUrl)
if err == nil {
if resp.StatusCode == 200 {
logger.Println(logfile, code+":sucess"+strconv.Itoa(resp.StatusCode))
fmt.Println(code + ":sucess")
fileName := downDir + code + ".html"
//不加os.O_RDWR的话,在linux下面无法写入文件。
f, err := os.OpenFile(fileName, os.O_RDWR|os.O_CREATE, 0666) //其实这里的 O_RDWR应该是 O_RDWR|O_CREATE,也就是文件不存在的情况下就建一个空文件,但是因为windows下还有BUG,如果使用这个O_CREATE,就会直接清空文件,所以这里就不用了这个标志,你自己事先建立好文件。
if err != nil {
panic(err)
}
defer f.Close()
//处理返回的html内容
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
fmt.Println("http read error")
}
src := string(body)
//将HTML标签全转换成小写
re, _ := regexp.Compile("\\<[\\S\\s]+?\\>")
src = re.ReplaceAllStringFunc(src, strings.ToLower)
/*
//去除STYLE
re, _ = regexp.Compile("\\<style[\\S\\s]+?\\</style\\>")
src = re.ReplaceAllString(src, "")
//去除SCRIPT
re, _ = regexp.Compile("\\<script[\\S\\s]+?\\</script\\>")
src = re.ReplaceAllString(src, "")
*/
//<div class="dlinfobox">
re, _ = regexp.Compile("\\<div class=\"dlinfobox\"\\>([\\S\\s]+?)\\</div\\>")
ret := re.FindString(src)
buf := []byte(ret)
f.Write(buf)
} else {
logger.Println(logfile, code+":http get StatusCode"+strconv.Itoa(resp.StatusCode))
fmt.Println(code + ":" + strconv.Itoa(resp.StatusCode))
}
defer resp.Body.Close()
} else {
logger.Println(logfile, code+":http get error"+code)
fmt.Println(code + ":error")
}
}
func isDirExists(path string) bool {
fi, err := os.Stat(path)
if err != nil {
return os.IsExist(err)
} else {
return fi.IsDir()
}
}
func show_usage() {
fmt.Fprintf(os.Stderr,
"Usage: %s [-n=<num>] \n"+
" <command> [<args>]\n\n",
os.Args[0])
fmt.Fprintf(os.Stderr,
"Flags:\n")
flag.PrintDefaults()
}
func myRedirect(req *http.Request, via []*http.Request) (e error) {
return errors.New(req.URL.String())
}