Golang realizes ticket grabbing

With the development of the Internet, online ticket purchasing has become the main way for people to purchase tickets. However, problems such as limited ticket sources, difficulty in grabbing tickets, and the increasing number of ticket grabbing software have also deterred many people. Therefore, in order to grab the tickets of their choice faster and more efficiently, more and more programmers have begun to write their own ticket grabbing programs, and golang has also become one of the programming languages. In this article, we will describe how to use golang to write a ticket grabbing program.

First of all, you need to understand the ticket grabbing rules of the target website. Different websites have different rules for grabbing tickets. For example, some websites will set a time for grabbing tickets, and some websites will provide a jump link and wait for ticket grabbers to manually submit orders. No matter which one is used, the operation needs to be implemented by simulating web page requests.

Next, it is recommended to use golang’s third-party libraries gin and goquery. Among them, gin is an open source web framework that provides convenient routing, dynamic response, middleware and other functions, which can effectively improve development efficiency and development experience; and goquery is a more A query library suitable for go language crawler development, equivalent to jQuery's implementation of go language.

First of all, some preparations need to be done. Through golang, you can easily send an http request and track its response status and return data. After obtaining the HTML code of the website, we use goquery selectors and regular expressions to analyze the information we need, such as keywords, ticket button names, seat data, etc. Once this information is found, functions such as automatically filling in personal information and automatically submitting orders can be implemented.

The following is a simple example of a ticket grabbing program:

package main

import (
    "github.com/PuerkitoBio/goquery"
    "github.com/gin-gonic/gin"
    "log"
    "net/http"
    "net/url"
    "strings"
)

func main() {
    r := gin.Default()

    r.POST("/ticket", func(c *gin.Context) {
        // 获取抢票链接
        postURL := c.PostForm("url")
        // 获取需提交的表单信息
        data := url.Values{}
        data.Set("name", c.PostForm("name"))
        data.Set("IDcard", c.PostForm("IDcard"))
        data.Set("seats", c.PostForm("seats"))

        // 模拟登录
        client := &http.Client{}
        req, err := http.NewRequest("GET", postURL, nil)
        if err != nil {
            log.Fatalln(err)
        }
        req.Header.Add("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36")
        resp, err := client.Do(req)
        if err != nil {
            log.Fatalln(err)
        }
        defer resp.Body.Close()

        // 解析HTML
        doc, err := goquery.NewDocumentFromReader(resp.Body)
        if err != nil {
            log.Fatalln(err)
        }

        // 提交表单
        sel := doc.Find("form")
        action, _ := sel.Attr("action")
        action = strings.Replace(action, "./", "", -1)
        postURL = postURL + action
        resp, err = client.PostForm(postURL, data)
        if err != nil {
            log.Fatalln(err)
        }
        defer resp.Body.Close()

        // 输出结果
        doc, err = goquery.NewDocumentFromReader(resp.Body)
        if err != nil {
            log.Fatalln(err)
        }
        sel = doc.Find(".result")
        result := sel.Text()
        c.String(http.StatusOK, result)
    })

    r.Run(":8080")
}

The above code example is based on the gin framework. By accepting post requests and passing parameters, orders can be automatically submitted. The client submits the website address, personal information, seat data, etc. through post. The server uses the goquery query selector to filter out the form information that needs to be submitted, simulates login and submits, and obtains the submission results.

It should be reminded that the vote-grabbing procedure is only used to improve efficiency and does not mean that the moral bottom line can be crossed. Programmers should grab tickets according to the specified time and should not use unfair means. In addition, because the rules for grabbing tickets may be different for each website, programmers also need to have strong ability to analyze and solve problems to avoid problems such as malicious attacks.

To sum up, golang not only has the advantages of high efficiency, ease of use, and security, but can also easily cope with high concurrency, making it suitable for the development of ticket grabbing programs. I hope this article can inspire the majority of programmers and allow everyone to efficiently grab their favorite tickets in a legal and compliant manner.

The above is the detailed content of Golang realizes ticket grabbing. For more information, please follow other related articles on the PHP Chinese website!