找不到包 "rsc.io/quote"

Question

我正在按照教程 (https://golang.org/doc/tutorial/getting-started) 开始使用 Go，但我已经运行遇到了问题。当我运行下面的代码：

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，有人可以解释一下吗？

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。但要让它工作，您必须初始化您的模块。

将源代码保存在 .go 文件和运行与 go run hello.go 中是不够的，必须存在 go.mod 文件。

要初始化您的模块，请按照教程中的说明进行操作：

go mod init hello

输出应该是：

go: creating new go.mod: module hello
go: to add module requirements and sums:
        go mod tidy

从 go 1.16 开始，您还必须运行

go mod tidy

这将自动下载 rsc.io/quote 包：

go: finding module for package rsc.io/quote
go: found rsc.io/quote in rsc.io/quote v1.5.2

接下来运行宁

go run hello.go

将输出：

Don't communicate by sharing memory, share memory by communicating.

Answer 2

2021/6/3 go版本go1.16.4linux/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.

Answer 3

运行命令提示符下的这个命令：

go mod tidy

之后执行你的代码：

go run file_name.go

将 file_name.go 替换为您的 go 文件示例：

go run hello.go

找不到包 "rsc.io/quote"

cannot find package "rsc.io/quote"

go

go-modules