go - 在本地计算机上运行第一个Go项目时出错

Question

我是Go的新手，所以请在这里与我联系。我已经在本地计算机上安装了最新版本的Go，从https://github.com/rrrkren/topshot-sales下载了源代码，并将项目代码放入了我的GOPATH中。当我在命令提示符下运行go run go/main.go时，出现这些错误

go\main.go:8:2: no required module provides package github.com/onflow/flow-go-sdk/client: go.mod file not found in current directory or any parent directory; see 'go help modules'
go\main.go:6:2: no required module provides package github.com/rrrkren/topshot-sales/topshot: go.mod file not found in current directory or any parent directory; see 'go help modules'
go\main.go:9:2: no required module provides package google.golang.org/grpc: go.mod file not found in current directory or any parent directory; see 'go help modules'

即使go.mod文件位于当前目录中。我希望能够下载该项目并将其保存在本地计算机上，以便可以随时编辑源代码。任何帮助表示赞赏。

Answer 1

在Go 1.16中，您不需要GOPATH环境变量。
仅有的:

GO111MODULE=on(在Go 1.17或1.18中不需要)

GOPROXY=https://proxy.golang.org,direct

GOROOT=C:\path\to\go

( GOROOT，除非您已在其默认文件夹 %USERPROFILE%\go中安装了Go)
我试过了:

D:\git>git clone https://github.com/rrrkren/topshot-sales
Cloning into 'topshot-sales'...
remote: Enumerating objects: 25, done.
remote: Counting objects: 100% (25/25), done.
remote: Compressing objects: 100% (18/18), done.
remote: Total 25 (delta 9), reused 21 (delta 6), pack-reused 0
Receiving objects: 100% (25/25), 16.95 KiB | 5.65 MiB/s, done.
Resolving deltas: 100% (9/9), done.

D:\git>cd topshot-sales

D:\git\topshot-sales>go run main.go
go: downloading github.com/onflow/flow-go-sdk v0.10.0
...
go: downloading gopkg.in/yaml.v2 v2.2.5
panic: rpc error: code = Unavailable desc = connection error: desc = "transport: Error while dialing dial tcp 35.193.214.129:9000: i/o timeout"

goroutine 1 [running]:
main.handleErr(...)
        D:/git/topshot-sales/main.go:14
main.main()
        D:/git/topshot-sales/main.go:23 +0x805
exit status 2

关于 go.mod没有错误，只有运行时执行错误。