go的环境设置问题,执行
go env -w GO111MODULE=auto
我的环境:Windows 7, Go 1.17
D:\Apps\GOPATH\src\code.oldboyedu.com\studygo>cd day01D:\Apps\GOPATH\src\code.oldboyedu.com\studygo\day01>cd helloworldD:\Apps\GOPATH\src\code.oldboyedu.com\studygo\day01\helloworld>go build
go: go.mod file not found in current directory or any parent directory; see 'go help modules'D:\Apps\GOPATH\src\code.oldboyedu.com\studygo\day01\helloworld>where go.exe
D:\Apps\Go\bin\go.exeD:\Apps\GOPATH\src\code.oldboyedu.com\studygo\day01\helloworld>go.exe build
go: go.mod file not found in current directory or any parent directory; see 'go help modules'D:\Apps\GOPATH\src\code.oldboyedu.com\studygo\day01\helloworld>go env -w GO111MODULE=autoD:\Apps\GOPATH\src\code.oldboyedu.com\studygo\day01\helloworld>go buildD:\Apps\GOPATH\src\code.oldboyedu.com\studygo\day01\helloworld>go version
go version go1.17 windows/amd64D:\Apps\GOPATH\src\code.oldboyedu.com\studygo\day01\helloworld>dir
驱动器 D 中的卷没有标签。
卷的序列号是 C61D-1F2E D:\Apps\GOPATH\src\code.oldboyedu.com\studygo\day01\helloworld 的目录2021/09/06 21:52 <DIR> .
2021/09/06 21:52 <DIR> ..
2021/09/06 21:52 1,925,120 helloworld.exe
2021/09/06 21:41 79 main.go
2 个文件 1,925,199 字节
2 个目录 71,544,717,312 可用字节D:\Apps\GOPATH\src\code.oldboyedu.com\studygo\day01\helloworld>helloworld.exe
Hello World!