go語言之正則表示式

摘要： go語言之正則表示式 //regexp package main import ( "fmt" "regexp" ) func main(){ //需要匹配的模式 //reg := regexp.MustCompile...

go語言之正則表示式

//regexp
package main

import (
"fmt"
"regexp"
)

func main(){
//需要匹配的模式
//reg := regexp.MustCompile("\\w+") 正則表示式中的\需要轉義
reg := regexp.MustCompile(`^z.*1$`)
//返回匹配到的結果
result := reg.FindAllString("zhangsan1", -1)
fmt.Printf("%v\n", result)

//演示一個匹配不到的例子
reg1 := regexp.MustCompile(`^z(.*)1$`)
result1 := reg1.FindAllString("zhangsand", -1)
fmt.Printf("%v\n", result1)

reg2 := regexp.MustCompile(`^z(.{1})(.{1})(.*)1$`)
result2 := reg2.FindAllString("zhangsan1", -1)
fmt.Printf("%v\n", result2)
}

// simple_crawler
package main

import (
"fmt"
"io/ioutil"
"net/http"
"regexp"
)

func main() {
url := "https://movie.douban.com/subject/24751763/"
resp, err := http.Get(url)
if err != nil {
panic(err)
}

defer resp.Body.Close()

sHtml, _ := ioutil.ReadAll(resp.Body)

reg := regexp.MustCompile(`<span\s*property="v:itemreviewed">(.*)</span>`)
result := reg.FindAllStringSubmatch(string(sHtml), -1)

fmt.Println(result[0][1])

reg1 := regexp.MustCompile(`<strong\s*class="ll\s*rating_num"\s*property="v:average">(.*)</strong>`)
result1 := reg1.FindAllStringSubmatch(string(sHtml), -1)

fmt.Println(result1[0][1])
}