Go 语言学习系列002 -- 网络调用

使用Go来实现网游的签到

本篇文章,实际应用中并没有多大意义。不适用于所有网友及网游。只是笔者寓教于乐的一种形式。

主要是学习和练习Go语言的以下知识点:

  • 变量的创建和赋值
  • 数组的创建、赋值和遍历
  • map的创建、修改和遍历
  • MD5加密
  • 网络请求
  • 打印

[TOC]

卡巴拉岛 畅玩服

签到功能用的是网页实现。

地址:

[POST]:http://120.78.201.23:808/cShop/item_checkpt.asp

[POST]:http://120.78.201.23:808/cShop/gacha.asp

需要在Body中携带参数

id=test1314
key=e13efe12345656e3
world=1

其中:id是用户的账号名称,key是密码的16位小写MD5,world是服务器id。

id=test1314&key=e13efe12345656e3&world=1

简单实现

package main

import (
    "bytes"
    "fmt"
    "io/ioutil"
    "net/http"
    "net/url"
)

func main() {
    sendRequest4()
}

func sendRequest4() {
    // Request (4) (POST http://120.78.201.23:808/cShop/gacha.asp)

    params := url.Values{}
    params.Set("id", "这里替换成自己的账号")
    params.Set("key", "这里替换成自己密码的小写16位MD5")
    params.Set("world", "1")
    body := bytes.NewBufferString(params.Encode())

    // Create client
    client := &http.Client{}

    // Create request
    req, err := http.NewRequest("POST", "http://120.78.201.23:808/cShop/gacha.asp", body)

    // Headers
    req.Header.Add("Content-Type", "application/x-www-form-urlencoded; charset=utf-8")

    // Fetch Request
    resp, err := client.Do(req)

    if err != nil {
        fmt.Println("Failure : ", err)
    }

    // Read Response Body
    respBody, _ := ioutil.ReadAll(resp.Body)
    

        // Display Results
    fmt.Println("response Status : ", resp.Status)
    fmt.Println("response Headers : ", resp.Header)
    fmt.Println("response Body : ", string(respBody))
}

变型封装

将网络调用,抽象封装。把账号名和密码作为传参传递进功能函数。

暂不考虑密码加密的问题,即已知加密后的密码。

package main

import (
    "bytes"
    "fmt"
    "io/ioutil"
    "net/http"
    "net/url"
)

func main() {
    checkptUrl := "http://120.78.201.23:808/cShop/item_checkpt.asp"
    id := "这里替换成自己的账号"
    key := "这里替换成自己密码的小写16位MD5"
    sendRequest(checkptUrl,id,key)
}

func sendRequest(_url string,_id string,_key string) {

    params := url.Values{}
    params.Set("id", _id)
    params.Set("key", _key)
    params.Set("world", "1")
    body := bytes.NewBufferString(params.Encode())

    // Create client
    client := &http.Client{}

    // Create request
    req, err := http.NewRequest("POST", _url, body)

    // Headers
    req.Header.Add("Content-Type", "application/x-www-form-urlencoded; charset=utf-8")

    // Fetch Request
    resp, err := client.Do(req)

    if err != nil {
        fmt.Println("Failure : ", err)
    }

    // Read Response Body
    respBody, _ := ioutil.ReadAll(resp.Body)

    // Display Results
    fmt.Println("response Status : ", resp.Status)
    fmt.Println("response Body : ", string(respBody))
}

实现MD5加密

实现32位小写的MD5

func md5(str string) string {
    h := md5.New()
    h.Write([]byte(str))
    return hex.EncodeToString(h.Sum([]byte(nil)))
}

实现16位小写的MD5。就是把标准普通的MD5字符串从中截取了。

func md5_16(str string) string {
    h := md5.New()
    h.Write([]byte(str))
    rs :=[]rune(hex.EncodeToString(h.Sum([]byte(nil))))
    return string(rs[8:24])
}

进一步改写

通过用户名和密码(明文)进行功能的运行

package main

import (
    "bytes"
    "crypto/md5"
    "encoding/hex"
    "fmt"
    "io/ioutil"
    "net/http"
    "net/url"
)

func main() {
    checkptUrl := "http://120.78.201.23:808/cShop/item_checkpt.asp"
    id := "这里替换成自己的账号"
    key := "这里替换成自己的密码"
    sendRequest(checkptUrl, id, md5_16(key))
}

func md5_16(str string) string {
    h := md5.New()
    h.Write([]byte(str))
    rs := []rune(hex.EncodeToString(h.Sum([]byte(nil))))
    return string(rs[8:24])
}

func sendRequest(_url string, _id string, _key string) {
    // Request (POST http://120.78.201.23:808/cShop/gacha.asp)

    params := url.Values{}
    params.Set("id", _id)
    params.Set("key", _key)
    params.Set("world", "1")
    body := bytes.NewBufferString(params.Encode())

    // Create client
    client := &http.Client{}

    // Create request
    req, err := http.NewRequest("POST", _url, body)

    // Headers
    req.Header.Add("Content-Type", "application/x-www-form-urlencoded; charset=utf-8")

    // Fetch Request
    resp, err := client.Do(req)

    if err != nil {
        fmt.Println("Failure : ", err)
    }

    // Read Response Body
    respBody, _ := ioutil.ReadAll(resp.Body)

    // Display Results
    fmt.Println("response Status : ", resp.Status)
    fmt.Println("response Body : ", string(respBody))
}

多账号

使用数组来实现多账号列表。

数组实现

这里暂时没有对密码数组和账号数组的长度是否一直做判定,默认为长度相同。

package main

import (
    "bytes"
    "crypto/md5"
    "encoding/hex"
    "fmt"
    "io/ioutil"
    "net/http"
    "net/url"
)

func main() {
    ids := [...]string{"账号1", "账号2", "账号3"}
    keys := [...]string{"账号1密码", "账号2密码", "账号3密码"}
    checkptUrl := "http://120.78.201.23:808/cShop/item_checkpt.asp"
    //gachaUrl := "http://120.78.201.23:808/cShop/gacha.asp"

    for index := 0; index < len(ids); index++ {
        sendRequest(checkptUrl, ids[index], md5_16(keys[index]))
    }

}

func sendRequest(_url string, _id string, _key string) {
    // Request (POST http://120.78.201.23:808/cShop/gacha.asp)

    params := url.Values{}
    params.Set("id", _id)
    params.Set("key", _key)
    params.Set("world", "1")
    body := bytes.NewBufferString(params.Encode())

    // Create client
    client := &http.Client{}

    // Create request
    req, err := http.NewRequest("POST", _url, body)

    // Headers
    req.Header.Add("Content-Type", "application/x-www-form-urlencoded; charset=utf-8")

    // Fetch Request
    resp, err := client.Do(req)

    if err != nil {
        fmt.Println("Failure : ", err)
    }

    // Read Response Body
    respBody, _ := ioutil.ReadAll(resp.Body)

    // Display Results
    fmt.Println("response Status : ", resp.Status)
    //fmt.Println("response Headers : ", resp.Header)
    fmt.Println("response Body : ", string(respBody))
}

func md5_16(str string) string {
    h := md5.New()
    h.Write([]byte(str))
    rs := []rune(hex.EncodeToString(h.Sum([]byte(nil))))
    return string(rs[8:24])
}

账号密码相同

假如用户名和密码是相同的特殊情况。

package main

import (
    "bytes"
    "crypto/md5"
    "encoding/hex"
    "fmt"
    "io/ioutil"
    "net/http"
    "net/url"
)
func main() {

    ids := [...]string{"账号1", "账号2", "账号3"}
    checkptUrl := "http://120.78.201.23:808/cShop/item_checkpt.asp"
    //gachaUrl := "http://120.78.201.23:808/cShop/gacha.asp"

    for _,value := range  ids {
        sendRequest(checkptUrl,value,md5_16(value))
    }

}


func sendRequest(_url string,_id string,_key string) {
    // Request (POST http://120.78.201.23:808/cShop/gacha.asp)

    params := url.Values{}
    params.Set("id", _id)
    params.Set("key", _key)
    params.Set("world", "1")
    body := bytes.NewBufferString(params.Encode())

    // Create client
    client := &http.Client{}

    // Create request
    req, err := http.NewRequest("POST", _url, body)

    // Headers
    req.Header.Add("Content-Type", "application/x-www-form-urlencoded; charset=utf-8")

    // Fetch Request
    resp, err := client.Do(req)

    if err != nil {
        fmt.Println("Failure : ", err)
    }

    // Read Response Body
    respBody, _ := ioutil.ReadAll(resp.Body)

    // Display Results
    fmt.Println("response Status : ", resp.Status)
    //fmt.Println("response Headers : ", resp.Header)
    fmt.Println("response Body : ", string(respBody))
}

func md5_16(str string) string {
    h := md5.New()
    h.Write([]byte(str))
    rs :=[]rune(hex.EncodeToString(h.Sum([]byte(nil))))
    return string(rs[8:24])
}

map实现

package main

import (
    "bytes"
    "crypto/md5"
    "encoding/hex"
    "fmt"
    "io/ioutil"
    "net/http"
    "net/url"
)
func main() {

    checkptUrl := "http://120.78.201.23:808/cShop/item_checkpt.asp"
    //gachaUrl := "http://120.78.201.23:808/cShop/gacha.asp"
    
    map_id := make(map[string]string)
    map_id["账号1"] = md5_16("密码1")
    map_id["账号2"] = md5_16("密码2")
    map_id["账号3"] = md5_16("密码3")

    for key,value := range  ids {
        sendRequest(checkptUrl,key,value)
    }

}


func sendRequest(_url string,_id string,_key string) {
    // Request (POST http://120.78.201.23:808/cShop/gacha.asp)

    params := url.Values{}
    params.Set("id", _id)
    params.Set("key", _key)
    params.Set("world", "1")
    body := bytes.NewBufferString(params.Encode())

    // Create client
    client := &http.Client{}

    // Create request
    req, err := http.NewRequest("POST", _url, body)

    // Headers
    req.Header.Add("Content-Type", "application/x-www-form-urlencoded; charset=utf-8")

    // Fetch Request
    resp, err := client.Do(req)

    if err != nil {
        fmt.Println("Failure : ", err)
    }

    // Read Response Body
    respBody, _ := ioutil.ReadAll(resp.Body)

    // Display Results
    fmt.Println("response Status : ", resp.Status)
    //fmt.Println("response Headers : ", resp.Header)
    fmt.Println("response Body : ", string(respBody))
}

func md5_16(str string) string {
    h := md5.New()
    h.Write([]byte(str))
    rs :=[]rune(hex.EncodeToString(h.Sum([]byte(nil))))
    return string(rs[8:24])
}

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