有时间再试试waitgroup看看效果 funcReadFile(fileNamestring) { fileName="conf/"+fileName chanNum:=GetFileLines(fileName) f,err:=os.Open(fileName)<--- iferr!=nil{ fmt.Println(err.Error()) return } buf:=bufio.NewScanner(f)<--- chs:=make([]chanint,chanNum) fori:=0;i<chanNum;i++...
fptr := flag.String("fpath","test.txt","file path to read from") flag.Parse() fmt.Println("value of fpath is", *fptr) } 在上述程序中第 8 行,通过String函数,创建了一个字符串标记,名称是fpath,默认值是test.txt,描述为file path to read from。这个函数返回存储 flag 值的字符串变量的...
使用io/ioutil包中的ReadFile函数来读取整个文件的内容,该函数将文件的内容读取到一个字节切片中。示例代码如下: import ( "io/ioutil" "log" ) func main() { // 读取文件内容 data, err := ioutil.ReadFile("file.txt") if err != nil { log.Fatal(err) } // 打印文件内容 log.Println(string...
我已经在 GOPATH(译注:原文是 GOROOT,应该是笔误)中创建了文件夹,在该文件夹内部,有一个文本文件 test.txt,我们会使用 Go 程序 filehandling.gotest.txt 包含文本 “Hello World. Welcome to file handling in Go”。我的文件夹结构如下: src filehandling filehandling.go test.txt 1. 2. 3. 4. package...
Read reads up to len(b) bytes from the File. It returns the number of bytes read and any error encountered. At end of file, Read returns 0, io.EOF. Write writes len(b) bytes to the File. It returns the number of bytes written and an error, if any. Write returns a non-nil er...
在上述代码中，ReadLogFile函数使用ioutil.ReadFile函数打开并读取指定路径的文件的内容。如果文件打开成功...
In this article we show how to read files in Golang. We read text and binary files. Learn how to write to files in Go in Go write file. $ go version go version go1.22.2 linux/amd64 We use Go version 1.22.2. To read files in Go, we use the os, ioutil, io, and bufio pa...
fmt.Println("Open file failed:", err)return}// 关闭文件deferfile.Close()// 读取文件内容scanner := bufio.NewScanner(file)forscanner.Scan() {// 输出文件内容fmt.Println(scanner.Text()) }// 检查是否读取出错iferr := scanner.Err(); err !=nil{ ...
import("bytes""github.com/ledongthuc/pdf")// ReadPdf 获取pdf文字内容funcReadPdf(pathstring)(string,error){f,r,err:=pdf.Open(path)// remember close filedeferf.Close()iferr!=nil{return"",err}varbuf bytes.Buffer b,err:=r.GetPlainText()iferr!=nil{return"",err}buf.ReadFrom(b)return...
bytesread, err := file.Read(buffer)if err != nil { fmt.Println(err)return } fmt.Println("bytes read: ", bytesread)fmt.Println("bytestream to string: ", string(buffer))} 2.以块的形式读取⽂件 虽然⼤多数情况下可以⼀次读取⽂件，但有时我们还是想使⽤⼀种更加节省内存的⽅法。