Golang：使用jszwec/csvutil读取csv文件

彭世瑜2024-05-28 20:31

jszwec/csvutil 高性能、惯用的CSV记录编码和解码到本机Go结构

文档

https://github.com/jszwec/csvutil

安装

bash 复制代码

go get github.com/jszwec/csvutil

要读取的文件 user.csv

复制代码

name,age,CreatedAt
jacek,26,2012-04-01T15:00:00Z
john,,2001-01-01T00:00:00Z

读取示例

go 复制代码

package main

import (
    "encoding/json"
    "fmt"
    "os"
    "time"

    "github.com/jszwec/csvutil"
)

type User struct {
    Name      string `csv:"name"`
    Age       int    `csv:"age,omitempty"`
    CreatedAt time.Time
}

func main() {
    body, _ := os.ReadFile("./user.csv")

    var users []User

    // read csv
    csvutil.Unmarshal(body, &users)

    // out
    data, _ := json.MarshalIndent(users, "", "  ")
    fmt.Println(string(data))
}

转为json输出

json 复制代码

[
  {
    "Name": "jacek",
    "Age": 26,
    "CreatedAt": "2012-04-01T15:00:00Z"
  },
  {
    "Name": "john",
    "Age": 0,
    "CreatedAt": "2001-01-01T00:00:00Z"
  }
]