我正在使用以下代码创建预签名url:packagemainimport("fmt""log""time""github.com/aws/aws-sdk-go/aws""github.com/aws/aws-sdk-go/aws/session""github.com/aws/aws-sdk-go/service/s3""github.com/kelseyhightower/envconfig")funcmain(){configuration:=s3.PutObjectInput{Key:aws.String("default_key")}//AddBuckettoconfigurat

我有一个代码可以从AWSS3下载图像、解码它们并调整它们的大小。该代码支持PNG和JPG/JPEG格式的图像。以下是我从AWSS3下载图像的方法://downloadsanimagefromS3funcdownloadImage(bucketstring,itemstring)error{file,err:=os.Create(strings.Split(item,"/")[len(strings.Split(item,"/"))-1])iferr!=nil{fmt.Println("Unabletoopenfile",err)returnerr}//createanewAWSsess

我用的是win10和go1.11windows/amd64deviceid,err:=getdeviceid(config.PlatformSpecificParams.ComponentID)iferr!=nil{returnnil,err}path:="\\\\.\\Global\\"+deviceid+".tap"pathp,err:=syscall.UTF16PtrFromString(path)iferr!=nil{returnnil,err}fileFd,err:=syscall.CreateFile(pathp,syscall.GENERIC_READ|syscall.G

我有一个ctx(context.Context)变量，它的值为:ctx=context.Background.WithCancel.WithCancel.WithValue(peer.peerKey{},&peer.Peer{Addr:(*net.UnixAddr)(0xc000270820),AuthInfo:credentials.AuthInfo(nil)}).WithValue(metadata.mdIncomingKey{},metadata.MD{":authority":[]string{"unix:///run/containerd/containerd.sock"},

这个问题在这里已经有了答案:fork/exec.nosuchfileordirectoryexitstatus1(3个答案)call'gobuild'commandfromgolangos.exec(1个回答)Whyisthiscurlcommandnotworking?(2个答案)callingcommandwithsomeargumentsworksbutnotwithothersbutworksfromconsole(1个回答)关闭3年前。如何使用Go执行scp-issh"."？我使用了以下代码片段。cmd:=exec.Command("scp-idragonstone.pem@

我正在尝试使用Go连接到远程服务器。这就是我正在使用的:(SSHHandshakecomplainsaboutmissinghostkey)key,err:=ioutil.ReadFile("/Users/pankaj/.ssh/id_rsa")iferr!=nil{log.Fatalf("unabletoreadprivatekey:%v",err)}//CreatetheSignerforthisprivatekey.signer,err:=ssh.ParsePrivateKey(key)iferr!=nil{log.Fatalf("unabletoparseprivatekey:

我正在尝试为结构构造函数编写单元测试，如果在file.Open期间发生错误，它也可能返回nil。我不知道如何使用标志测试/模拟文件错误:os.O_RDWR|os.O_CREATE|os.O_APPEND我试图在测试中检查nil值，但失败了。构造函数:typeAppstruct{someFieldstringlog*log.Logger}funcNew()*App{app:=&App{}f,err:=os.OpenFile("info.log",os.O_RDWR|os.O_CREATE|os.O_APPEND,0666)iferr!=nil{fmt.Printf("erroropeni

当我使用文件指针时f*os.File我得到一个空映射funcdecode(f*os.File,bmap[string]interface{})error{err:=gob.NewDecoder(f).Decode(&b)fmt.Printf("%+v\n",b)returnerr}funcencode(f*os.File,bmap[string]interface{})error{bb:=map[string]interface{}{"X":1,"Greeting":"hello",}err:=gob.NewEncoder(f).Encode(bb)f.Sync()//fmt.Prin

我能做到:f,err:=os.Create("file")iferr!=nil{....}by:=bufio.NewWriter(f)还有这个:var_io.Writer=&os.File{}os.File的包文档导致thissourcefile它确实包含一个未导出的写函数，但是当我尝试使用未导出的函数实现接口(interface)时出现错误。var_Disease=&Scratch{}//*Scratchdoesn'timplementDiseasehavespread()wantSpread()typeDiseaseinterface{Spread()}typeScratchstr

我正在使用ssh模块在远程机器上运行shell脚本://ssh-run.gopackagemainimport("bytes""flag""fmt""log""time""golang.org/x/crypto/ssh")var(flagUser=flag.String("user","","")flagPwd=flag.String("pwd","","")flagHost=flag.String("host","","")flagCmd=flag.String("cmd","",""))funcmain(){flag.Parse()log.SetFlags(log.Lshortfi