对外开放接口开发

  func PageDB(limit int, page int, count int64) (int, int) {
      pageSetNum := limit // 每页条数

      pageCount := math.Ceil((float64(count)) / (float64(pageSetNum))) // 总页数
      pageNum := page                                                  // 当前页码

      if pageNum > int(pageCount) { // 如果传入的页码超出范围
          pageNum = int(pageCount)
      }
      offset := pageSetNum * (pageNum - 1)
      if offset < 0 {
          offset = 0
      }
      return pageSetNum, offset
  }

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go对接快递

2022-07-30

韵达签名

  func YunDaSign(structData interface{}) ([]byte, string, string) {
      jsonData, _ := json.Marshal(structData)
      appKey := "你的key"
      appSecret := "你的秘钥"
      newStr := string(jsonData) + "_" + appSecret
      md := md5.New()
      md.Write([]byte(newStr))
      md5Str := hex.EncodeToString(md.Sum(nil))
      return jsonData, appKey, md5Str
  }

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go中加解密

2022-07-16

func PKCS7Padding(ciphertext []byte, blockSize int) []byte {
    padding := blockSize - len(ciphertext)%blockSize
    //Repeat()函数的功能是把切片[]byte{byte(padding)}复制padding个，然后合并成新的字节切片返回
    padtext := bytes.Repeat([]byte{byte(padding)}, padding)
    return append(ciphertext, padtext...)
}

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go中时间范围的获取

2022-06-18

获取部分时间范围

//获得当前月的初始和结束日期
func GetMonthDay(types int) (string, string) {
    now := time.Now()
    currentYear, currentMonth, _ := now.Date()
    currentLocation := now.Location()

    firstOfMonth := time.Date(currentYear, currentMonth, 1, 0, 0, 0, 0, currentLocation)
    lastOfMonth := firstOfMonth.AddDate(0, 1, -1)
    f := firstOfMonth.Unix()
    l := lastOfMonth.Unix()
    if types == 1 {
        return time.Unix(f, 0).Format("2006-01-02"), time.Unix(l, 0).Format("2006-01-02")
    }
    return time.Unix(f, 0).Format("2006-01-02") + " 00:00:00", time.Unix(l, 0).Format("2006-01-02") + " 23:59:59"
}

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go中类型转换

2022-06-05

go中类型转换的搜集

func StringToInt(a string) int {
    d, _ := strconv.Atoi(a)
    return d
}

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go中生成PDF

2022-05-22

一个简单但是非常实用的pdf生成器！

安装：

go get github.com/jung-kurt/gofpdf

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go中获取HTTP请求的IP地址

2022-05-10

package main

import (
    "encoding/json"
    "net/http"
)

func main() {
    http.HandleFunc("/", ExampleHandler)
    if err := http.ListenAndServe(":8080", nil); err != nil {
        panic(err)
    }
}

func ExampleHandler(w http.ResponseWriter, r *http.Request) {
    w.Header().Add("Content-Type", "application/json")
    resp, _ := json.Marshal(map[string]string{
        "ip": GetIP(r),
    })
    w.Write(resp)
}

func GetIP(r *http.Request) string {
    forwarded := r.Header.Get("X-FORWARDED-FOR")
    if forwarded != "" {
        return forwarded
    }
    return r.RemoteAddr
}

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jsonContent: meta: false pages: false posts: title: true date: true path: true text: false raw: false content: false slug: false updated: false comments: false link: false permalink: false excerpt: false categories: false tags: true