Go语言bufio读取文件示例详解

package main

import (
    "bufio"
    "fmt"
    "os"
)

func main() {
    file, err := os.Open("example.txt")
    if err != nil {
        fmt.Println("打开文件失败:", err)
        return
    }
    defer file.Close()

    scanner := bufio.NewScanner(file)
    for scanner.Scan() {
        line := scanner.Text()
        fmt.Println(line)
    }

    if err := scanner.Err(); err != nil {
        fmt.Println("读取文件出错:", err)
    }
}

package main

import (
    "bufio"
    "fmt"
    "io"
    "os"
)

func main() {
    file, err := os.Open("example.txt")
    if err != nil {
        fmt.Println("打开文件失败:", err)
        return
    }
    defer file.Close()

    reader := bufio.NewReader(file)
    buffer := make([]byte, 1024)

    for {
        n, err := reader.Read(buffer)
        if n > 0 {
            fmt.Print(string(buffer[:n]))
        }
        if err == io.EOF {
            break
        }
        if err != nil {
            fmt.Println("读取错误:", err)
            break
        }
    }
}