Question

我正在按照教程（https://golang.org/doc/tutorial/getting-started）开始使用Go，但是我已经遇到了问题。当我运行以下代码时：

package main

import "fmt"

import "rsc.io/quote"

func main() {
    fmt.Println(quote.Go())
}

我在控制台中收到以下错误消息：

C:\Users\myname\Documents\Work\GO\hello>go run hello.go
hello.go:7:8: cannot find package "rsc.io/quote" in any of:
        C:\Program Files\Go\src\rsc.io\quote (from $GOROOT)
        C:\Users\myname\go\src\rsc.io\quote (from $GOPATH)

我猜这是我安装Go的方式/位置的问题，有人可以请问一下吗？

谢谢

Answer 1

具有模块支持的go工具会自动下载并安装依赖项。但是要使其正常工作，您必须初始化模块。

仅将源保存在.go文件中并与go run hello.go一起运行是不够的，go.mod文件必须存在。

要初始化模块，请按照本教程中的指示进行操作：

go mod init hello

输出应为：

go: creating new go.mod: module hello

所以下次运行

go run hello.go

将自动下载rsc.io/quote软件包：

go: finding module for package rsc.io/quote
go: found rsc.io/quote in rsc.io/quote v1.5.2
Don't communicate by sharing memory, share memory by communicating.

最后一行是成功运行应用程序的输出。

Answer 2

2021/6/3 go 版本 go1.16.4 linux/amd64

root@zqf-vm:/workspace/go_workspace/hello# go mod init hello
go: creating new go.mod: module hello
go: to add module requirements and sums:
        go mod tidy
root@zqf-vm:/workspace/go_workspace/hello# go run hello.go 
hello.go:6:2: no required module provides package rsc.io/quote; to add it:
        go get rsc.io/quote
root@zqf-vm:/workspace/go_workspace/hello# go mod init hello
go: /workspace/go_workspace/hello/go.mod already exists
root@zqf-vm:/workspace/go_workspace/hello# go run hello.go 
hello.go:6:2: no required module provides package rsc.io/quote; to add it:
        go get rsc.io/quote
root@zqf-vm:/workspace/go_workspace/hello# go mod tidy
go: finding module for package rsc.io/quote
go: downloading rsc.io/quote v1.5.2
go: found rsc.io/quote in rsc.io/quote v1.5.2
go: downloading rsc.io/sampler v1.3.0
go: downloading golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c
root@zqf-vm:/workspace/go_workspace/hello# go run hello.go 
Don't communicate by sharing memory, share memory by communicating.

找不到软件包“ rsc.io/quote”

2 个答案: