看一下golang操作文件的测试代码。

package main

import (
        "fmt"
        "os"
)

//O_CREATE
func main() {
        f, err1 := os.OpenFile("test.txt", os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0777)
        defer f.Close()
        if err1 != nil {
                fmt.Println(err1)
        } else {
                write_str := "var json111="
                _, err1 = f.WriteString(write_str)

                if err1 != nil {
                        fmt.Println(err1)
                }
        }
}