Go語言複製檔案
阿新 • • 發佈:2018-12-18
需要使用io包的Copy方法
package main import ( "fmt" "io" "os" ) //自己編寫一個函式,接收兩個檔案路徑 srcFileName dstFileName func CopyFile(dstFileName string, srcFileName string) (written int64, err error) { srcFile, err := os.Open(srcFileName) if err != nil { fmt.Printf("open file err = %v\n", err) return } defer srcFile.Close() //開啟dstFileName dstFile, err := os.OpenFile(dstFileName, os.O_WRONLY | os.O_CREATE, 0755) if err != nil { fmt.Printf("open file err = %v\n", err) return } defer dstFile.Close() return io.Copy(dstFile, srcFile) } func main() { result, err := CopyFile("./src/main/dst.png", "./src/main/file.png") if err == nil { fmt.Println("拷貝成功!,拷貝的位元組數為: ", result) } }