英文:
Why can't I import package in the same module?
问题
我在使用Golang时遇到了一些关于导入本地包的问题。这是我的项目结构：
home/src/github.com/username/project1
|main.go
|go.mod
├── handlers
│ ├── handlers.go
├── usecases
| ├─ ...
|...
我的go.mod文件：
module project1
go 1.16
我的main.go文件：
package main
import (
"fmt"
"net/http"
"project1/handlers/handlers"
)
func main() {
http.HandleFunc("/", handlers.Greet)
http.ListenAndServe(":8080", nil)
}
我的handlers/handlers.go文件：
package handlers
import (
"net/http"
"fmt"
)
func Greet(w http.ResponseWriter, r *http.Request) {
//Do stuff
}
我正在GOPATH之外构建这个项目，GOPATH是C:\users\...\go，我正在使用go 1.16。
在阅读了一些资料后，我得知可以使用模块名和包的路径来导入本地包，所以我使用以下代码将handlers包导入到main包中：
import "project1/handlers/handlers"
但是当我尝试运行时，出现了以下错误：
package project1/handlers/handlers is not in GOROOT (C:\...\project1/handlers/handlers)
然后我尝试做了一些更改，将模块名和导入路径都改为以下内容：
//go.mod中的模块名
module github.com/username/project1
//main.go中的导入路径
import "github.com/username/project1/handlers/handlers"
但是这时又出现了错误，提示我需要先使用go get github.com/username/project1/handlers/handlers命令获取该包。但是当我尝试使用该命令或者简单地运行go mod tidy时，都会返回repository not found错误，因为我还没有推送/发布这个项目，而且我也没有计划这样做。
所以，我在这里犯了什么问题/错误？我是否需要在导入自己的本地包之前先发布我的项目？我是否错过了一些配置？非常感谢任何帮助。
英文:
I have some problem with Golang about importing local only package. This is my project structure
home/src/github.com/username/project1
|main.go
|go.mod
├── handlers
│ ├── handlers.go
├── usecases
| ├─ ...
|...
my go.mod
module project1
go 1.16
my main.go
package main
import (
"fmt"
"net/http"
"project1/handlers/handlers"
)
func main() {
http.HandleFunc("/", handlers.Greet)
http.ListenAndServe(":8080", nil)
}
my handlers/handlers.go
package handlers
import (
"net/http"
"fmt"
)
func Greet(w http.ResponseWriter, r *http.Request) {
//Do stuff
}
I'm building this outside the GOPATH which is C:\users\...\go and I am using go 1.16.
After reading some sources that said I can just use the module name and path to the package to import the package I use this line to import handlers package to main package.
import "project1/handlers/handlers"
But this returns this error when I tried to run it.
package project1/handlers/handlers is not in GOROOT (C:\...\project1/handlers/handlers)
Then I tried to change some stuff like changing both my module name and import path to this
//module name in go.mod
module github.com/username/project1
//import path in main.go
import "github.com/username/project1/handlers/handlers"
but then it returns error that said I need to get the package first with go get github.com/username/project1/handlers/handlers which when I tried to get it with that command or just simply go mod tidy returns repository not found error because I haven't push/publish this project and I'm not planning to do it.
So, what is the problem/mistake that I made here? do I have to publish my project before I can import my own local package? Did I miss some configuration? Every single help is appreciated.
答案1
得分: 3
我在导入路径中放了太多的路径，应该停留在目录而不是包上。所以通过将导入路径更改为
import "project1/handlers"
//而不是
import "project1/handlers/handlers"
解决了这个问题。谢谢！
英文:
I put too many path in the import path, it should stop at the directory rather than package. So by changing the import path to
import "project1/handlers"
//rather than
import "project1/handlers/handlers"
fixed the problem. Thanks!
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