主页 / 问题 / 1298935
Accepted
Seavegen
Asked:2022-06-25 16:57:55 +0000 UTC2022-06-25 16:57:55 +0000 UTC

Golang 通过 txt 文件检查 MX 记录

  • 772

有一个很大的 mail.txt 文件，它包含 100 万行，我需要分隔域并检查域的 MX-Records。它看起来像这样：

s.ingall@gazetaweb.com

我需要切断邮件并输出一个字符串数组，例如像这样

gazetaweb.com

我有以下代码检查 mx-records

package main

import (
    "fmt"
    "net"
    "os"
    "log"
    "ioutil"

)

func ReadFileDomains() {
    file, err := os.Open("mail.txt")
    if err != nil {
        log.Fatal(err)
    }
    defer func() {
        if err = file.Close(); err != nil {
            log.Fatal(err)
        }
    }()

    b, err := ioutil.ReadAll(file)
    fmt.Print(b)
}

func CheckEmail() {
    domains := ReadFileDomains()
    txtrecords, _ := net.LookupTXT(domains())

    for _, txt := range txtrecords {
        fmt.Println(txt)
    }
}

底线是我需要快速检查域并将读取域文件的方法传递给 net.LookupTXT(ReadFileDomains) 并写入文件的结果

файлы

1 个回答

  1. Best Answer

    在 LookupTXT 中，您需要将域作为字符串传递给您。为此，您需要先从文件中获取此数据。读取、检查、将字符串传递给 net.LookupTXT

    import (
    "bufio"
    "fmt"
    "net/mail"
    "os"
    "strings"
)

func ReadFileLines() []string {
    lines, err := readLines("mail.txt")
    if err != nil {
        return []string{}
    }

    return lines
}

func CheckEmail() {
    for _, txt := range ReadFileLines() {
        _, err := mail.ParseAddress(txt)
        if err != nil {
            fmt.Printf("invalid address: %s\n ", txt)
            continue
        }

        if ok, domain := check(txt); ok {
            fmt.Printf("tada: %s\n", domain)
        }
    }
}

func check(email string) (bool, string){
    at := strings.LastIndex(email, "@")
    if at >= 0 {
        username, domain := email[:at], email[at+1:]
        fmt.Printf("Username: %s, Domain: %s\n", username, domain)
        return true, domain
    }

    return false, ""
}

func readLines(path string) ([]string, error) {
    file, err := os.Open(path)
    if err != nil {
        return nil, err
    }
    defer file.Close()

    var lines []string
    scanner := bufio.NewScanner(file)
    for scanner.Scan() {
        lines = append(lines, scanner.Text())
    }
    return lines, scanner.Err()
}


func main() {
    CheckEmail()
}

    邮件.txt 文件

    s.ingall@gazetaweb.com
s.ingall@gazeb.com
s.ingall@google)

    排气：

    Username: s.ingall, Domain: gazetaweb.com
tada: gazetaweb.com
Username: s.ingall, Domain: gazeb.com
tada: gazeb.com
invalid address: s.ingall@google)
    • 1

相关问题