Update
Before you download the update at the source will not be so many things
go env -w GOPROXY=https://goproxy.cn,direct
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version
go 1.13
process
Start directly go go get gopkg.in/gomail.v2when prompted:
go get gopkg.in/gomail.v2: module gopkg.in/gomail.v2: Get
https://proxy.golang.org/gopkg.in/gomail.v2/@v/list: dial tcp 216.58.200.49:443:
connectex: A connection attempt failed because the connected party did not
properly respond after a period of time, or established connection failed because
connected host has failed to respond.
Directly behind gopm get -g gopkg.in/gomail.v2, the installation was successful, automatic installation to /$GOPATH/src/gopkg.inthe next, because the project with a go.modway to put the package copied to the $GOPATH/pkg/mod/gopkg.innext, and then the project was a direct import "gopkg.in/gomail.v2"
result also found a bag, but still failed to download
go: finding gopkg.in/gomail.v2 latest
go: downloading gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df
verifying gopkg.in/gomail.v2@v2.0.0-20160411212932-81ebce5c23df:
gopkg.in/gomail.v2@v2.0.0-20160411212932-81ebce5c23df: Get
https://sum.golang.org/lookup/gopkg.in/gomail.v2@v2.0.0-20160411212932-
81ebce5c23df: dial tcp 172.217.24.17:443: connectex: A connection attempt
failed because the connected party did not properly respond after a period of
time, or established connection failed because connected host has failed to
respond.
solution
Later learned that the default will go after 1.13 with sum check, that is go.sum, as though you just downloaded package download success, but the directory name gomail.v2, so modulestill think in here you can not find the package, then automatically downloaded to the back of the it removed, because China can not access gopkg.in, so the download failed. .
Now only need to GOPROXYset up just fine
go env -w GOPROXY=https://goproxy.cn
Then run the project
go run ./main.go
go: finding gopkg.in/gomail.v2 latest
go: downloading gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df
go: extracting gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df
Success, then you can see go.sumadded the following information
gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df h1:n7WqCuqOuCbNr617RXOY0AWRXxgwEyPp2z+p0+hgMuE=
gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df/go.mod h1:LRQQ+SO6ZHR7tOkpBDuZnXENFzX8qRjMDMyPD6BRkCw=
to sum up
Sometimes gopm getafter downloaded, the occurrence of the above, you can follow the prompts error will modify the directory name click on it, such as tips verifying gopkg.in/[email protected]:, just directly to the gopmpackage name change what is installed [email protected]:on it
