GolangCSV包使用教程

package main

import (
    "encoding/csv"
    "os"
    "fmt"
)

func main() {
    file, err := os.Open("data.csv")
    if err != nil {
        panic(err)
    }
    defer file.Close()

    reader := csv.NewReader(file)
    records, err := reader.ReadAll()
    if err != nil {
        panic(err)
    }

    for _, record := range records {
        fmt.Println(record) // 每一行是一个[]string
    }
}

for {
    record, err := reader.Read()
    if err == io.EOF {
        break
    }
    if err != nil {
        panic(err)
    }
    fmt.Println(record)
}

package main

import (
    "encoding/csv"
    "os"
)

func main() {
    file, err := os.Create("output.csv")
    if err != nil {
        panic(err)
    }
    defer file.Close()

    writer := csv.NewWriter(file)
    defer writer.Flush() // 必须调用Flush，否则可能丢失数据

    records := [][]string{
        {"Name", "Age", "City"},
        {"Alice", "30", "Beijing"},
        {"Bob", "25", "Shanghai"},
    }

    for _, record := range records {
        err := writer.Write(record)
        if err != nil {
            panic(err)
        }
    }
}

reader := csv.NewReader(file)
reader.Comma = ';' // 使用分号分隔

writer := csv.NewWriter(file)
writer.Comma = '\t' // 使用制表符