mac 安装 go swagger 错误并显示以下消息 `open /usr/local/go/bin/swag: permission denied`

Question

我运行以下命令安装 swag，错误消息如下。 希望对你有帮助。

MacBook-Pro~: go get -u github.com/swaggo/swag/cmd/swag                                                                                                                                                                                   1 ↵  5434  14:55:27
go: found github.com/swaggo/swag/cmd/swag in github.com/swaggo/swag v1.6.7
go: golang.org/x/text upgrade => v0.3.2
go: github.com/go-openapi/spec upgrade => v0.19.8
go: github.com/cpuguy83/go-md2man/v2 upgrade => v2.0.0
go: github.com/go-openapi/swag upgrade => v0.19.9
go: golang.org/x/tools upgrade => v0.0.0-20200612022331-742c5eb664c2
go: gopkg.in/yaml.v2 upgrade => v2.3.0
go: github.com/urfave/cli/v2 upgrade => v2.2.0
go: golang.org/x/net upgrade => v0.0.0-20200602114024-627f9648deb9
go: github.com/go-openapi/jsonreference upgrade => v0.19.3
go: github.com/go-openapi/jsonpointer upgrade => v0.19.3
go: github.com/PuerkitoBio/purell upgrade => v1.1.1
go: github.com/mailru/easyjson upgrade => v0.7.1
go get github.com/swaggo/swag/cmd/swag: copying /var/folders/jm/s7qg764x5y93_2_x64qwlswm0000gn/T/go-build542960688/b001/exe/a.out: open /usr/local/go/bin/swag: permission denied

我通过 pkg 包安装了 go，这里是我的环境变量。

MacBook-Pro  ~/Documents/goProjects/bin  go env                                                                                                                                                                                                         ✔  5439  15:40:42
GO111MODULE="on"
GOARCH="amd64"
GOBIN="/usr/local/go/bin"
GOCACHE="/Users/zhangyu/Library/Caches/go-build"
GOENV="/Users/zhangyu/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOINSECURE=""
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/aaron/Documents/goProjects"
GOPRIVATE=""
GOPROXY="https://goproxy.io"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/dev/null"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/jm/s7qg764x5y93_2_x64qwlswm0000gn/T/go-build760572234=/tmp/go-build -gno-record-gcc-switches -fno-common"

如何更改权限，是我安装不正确，还是需要更改环境变量？

Answer 1

您的$GOPATH 似乎设置为/usr/local/go/。通过在终端中运行echo $GOPATH 进行验证。

/usr/local/go 通常归用户root 所有。您的个人用户不允许在那里写东西，因此会出现错误。

你有几个选择：

• 将您的$GOPATH 明确设置为您可以读取/写入的位置。这应该类似于 [this] (https://gist.github.com/molivier/271bba5d67de1583a8e3)。请注意，我不是 Mac 用户，无法验证此要点是否有效。
• 取消设置$GOPATH 以使用默认值：https://rakyll.org/default-gopath/
• 允许您的用户写信给/usr/local/go/。我不会描述如何实现这一点，因为您无论如何都不应该这样做。

如果您之前一直使用go，请确保将目录/usr/local/go/bin、/usr/local/go/pkg 和/usr/local/go/src 复制到新的$GOPATH。