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，但我已经遇到了问题。当我运行以下代码时：package mainimport "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.gohello.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？

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，你必须初始化你的模块。

.go将源文件保存在文件中并使用 运行是不够的go run hello.go，go.mod文件必须存在。

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，你还必须运行

go mod tidy

它将rsc.io/quote自动下载包：

go: finding module for package rsc.io/quote

go: found rsc.io/quote in rsc.io/quote v1.5.2

所以下一次运行

go run hello.go

将输出：

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

Answer 2

在命令提示符下运行此命令：

go mod tidy

之后执行你的代码：

go run file_name.go

替换file_name.go为您的 go 文件示例：

go run hello.go

Answer 3

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.