问题
I was trying to set up GO Modules in intellij and was trying import a package under GOPATH. When I use Go Modules, it doesnt seem to 'import' the packages from GOPATH. Any ideas on what I could be doing wrong?
Below is a screenshot. Left pic: GoModules, which doesnt recognize the package. Right Pic: Simple GO project, which recognized the packages.
I tried doing sync package, with no luck.
Go version - 1.12.3
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回答1:
The two supported modes ("GOPATH mode" and "module-aware mode") are mutually exclusive modes. This means you can't have both, you can't mix modules and GOPATH.
Quoting from Command go: GOPATH and Modules:
When using modules, GOPATH is no longer used for resolving imports. However, it is still used to store downloaded source code (in GOPATH/pkg/mod) and compiled commands (in GOPATH/bin).
And also Command go: Preliminary module support:
For more fine-grained control, the module support in Go 1.11 respects a temporary environment variable, GO111MODULE, which can be set to one of three string values: off, on, or auto (the default). If GO111MODULE=off, then the go command never uses the new module support. Instead it looks in vendor directories and GOPATH to find dependencies; we now refer to this as "GOPATH mode." If GO111MODULE=on, then the go command requires the use of modules, never consulting GOPATH. We refer to this as the command being module-aware or running in "module-aware mode". If GO111MODULE=auto or is unset, then the go command enables or disables module support based on the current directory. Module support is enabled only when the current directory is outside GOPATH/src and itself contains a go.mod file or is below a directory containing a go.mod file.
In module-aware mode, GOPATH no longer defines the meaning of imports during a build, but it still stores downloaded dependencies (in GOPATH/pkg/mod) and installed commands (in GOPATH/bin, unless GOBIN is set).
来源：https://stackoverflow.com/questions/55650450/go-modules-does-not-recognize-files-under-gopath