golang报错：unrecognized import path "golang.org/x/tour"

golang报错：unrecognized import path “golang.org/x/tour”

由于golang.org官网无法顺利打开，国内的用户可以使用golang.google.cn镜像网站来查看一些文档等。

但是在安装x/tour， x/net等扩展包的时候，就无能为力了。

除了使用VPN以外，可以使用手动下载代码的方式，下边来介绍一下怎么手动解决的。

手动安装非预装扩展包:

golang 官方在 github 上建立了一个镜像库，直接从github下载镜像代码，放入GOPATH目录下即可。

直接通过 go get 安装，报错:

$ go get golang.org/x/tour
package golang.org/x/tour: 
 unrecognized import path "golang.org/x/tour" 
 (https fetch: Get https://golang.org/x/tour?go-get=1: 
 	dial tcp 216.239.37.1:443: i/o timeout)

$ go get -u golang.org/x/blog
package golang.org/x/blog: 
 unrecognized import path "golang.org/x/blog" 
 (https fetch: Get https://golang.org/x/blog?go-get=1: 
 	dial tcp 216.239.37.1:443: i/o timeout)

切换成国内可以打开的 golang.google.cn 网址也不行:

$ go get golang.google.cn/x/tour
package golang.google.cn/x/tour: 
 unrecognized import path "golang.google.cn/x/tour" 
  (parse https://golang.google.cn/x/tour?go-get=1: 
  	 no go-import meta tags (meta tag golang.org/x/tour did not match 
  	 	import path golang.google.cn/x/tour))

查看$GOPATH环境变量:

如果没有设置 $GOPATH 环境变量，请参考 “如何设置go环境变量GOPATH？” 。

$ echo $GOPATH 
/Users/wangtom/development/gopath
$ cd $GOPATH  
$ pwd
/Users/wangtom/development/gopath

首先创建好 src/golang.org/x/ 目录:

$ mkdir -p src/golang.org/x/

拉取各个模块的代码:

比如拉取 x/net 代码，直接执行:

$ git clone https://github.com/golang/net.git

可以将Go的各个子包都给下载下来:

$ git clone https://github.com/golang/tour.git
$ git clone https://github.com/golang/net.git
$ git clone https://github.com/golang/blog.git
$ git clone https://github.com/golang/sync.git
$ git clone https://github.com/golang/tools.git
$ git clone https://github.com/golang/lint.git
// ...

每个包的名称如下:

benchmarks — benchmarks to measure Go as it is developed.
blog — blog.golang.org's implementation.
build — build.golang.org's implementation.
crypto — additional cryptography packages.
debug — an experimental debugger for Go.
image — additional imaging packages.
mobile — experimental support for Go on mobile platforms.
net — additional networking packages.
perf — packages and tools for performance measurement, storage, and analysis.
review — a tool for working with Gerrit code reviews.
sync — additional concurrency primitives.
sys — packages for making system calls.
text — packages for working with text.
time — additional time packages.
tools — godoc, goimports, gorename, and other tools.
tour — tour.golang.org's implementation.
exp — experimental and deprecated packages (may change without warning).

VSCode 安装扩展报错:

在 VSCode 中安装go扩展 Go for Visual Studio Code 报错:

gocode:
Error: Command failed: /usr/local/go/bin/go get -u -v github.com/mdempsky/gocode
github.com/mdempsky/gocode (download)
Fetching https://golang.org/x/tools/go/gcexportdata?go-get=1
https fetch failed: Get https://golang.org/x/tools/go/gcexportdata?go-get=1: dial tcp 216.239.37.1:443: i/o timeout
package golang.org/x/tools/go/gcexportdata: unrecognized import path "golang.org/x/tools/go/gcexportdata" (https fetch: Get https://golang.org/x/tools/go/gcexportdata?go-get=1: dial tcp 216.239.37.1:443: i/o timeout)
github.com/mdempsky/gocode (download)
Fetching https://golang.org/x/tools/go/gcexportdata?go-get=1
https fetch failed: Get https://golang.org/x/tools/go/gcexportdata?go-get=1: dial tcp 216.239.37.1:443: i/o timeout
package golang.org/x/tools/go/gcexportdata: unrecognized import path "golang.org/x/tools/go/gcexportdata" (https fetch: Get https://golang.org/x/tools/go/gcexportdata?go-get=1: dial tcp 216.239.37.1:443: i/o timeout)

问题原因: 该扩展使用了x/tools,x/lint等go语言非预装的扩展包，需要先安装.

解决办法: 使用上边介绍的方法，把相关依赖包下载下来即可。

参考链接:

https://blog.csdn.net/cnwyt/article/details/84962807
https://blog.csdn.net/a55569769/article/details/46377267

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