Can't seem to get started with Go and Echo

Question

Trying to build a simple crud api with Golang and Echo and I can't get past the first tep in the Echo docs.

I run go get -u github.com/labstack/echo/...

then I create server.go:

package main

import (
    "net/http"

    "github.com/labstack/echo/v4"
)

func main() {
    e := echo.New()
    e.GET("/", func(c echo.Context) error {
        return c.String(http.StatusOK, "Hello, World!")
    })
    e.Logger.Fatal(e.Start(":1323"))
}

but when I try to run: go run server.go

I get this error:

server.go:6:2: cannot find package "github.com/labstack/echo/v4" in any of:
    /usr/local/Cellar/go/1.14.4/libexec/src/github.com/labstack/echo/v4 (from $GOROOT)
    /Users/dariusgoore/go/src/github.com/labstack/echo/v4 (from $GOPATH)

Run `go get github.com/labstack/echo/v4` as described in [the installation instructions](https://github.com/labstack/echo#guide). — Charlie Tumahai, Jun 26 '20 at 22:14
Returns the same error message: cannot find package "github.com/labstack/echo/v4" in any of: /usr/local/Cellar/go/1.14.4/libexec/src/github.com/labstack/echo/v4 (from $GOROOT) /Users/dariusgoore/go/src/github.com/labstack/echo/v4 (from $GOPATH) — user2799827, Jun 26 '20 at 22:23
@user2799827 enable modules. See [How to Write Go Code](https://golang.org/doc/code.html) if you are new to writing Go code. — Charlie Tumahai, Jun 26 '20 at 22:33

score 2 · Answer 1 · answered Jun 26 '20 at 23:08

2

You need to enable GO111MODULE. To enable the module you need to run this command.

export GO111MODULE=on

After enabling it when you will run go run server.go then it will install the packages again after that the program will run as expected.

answered Jun 26 '20 at 23:08

Hamza Anis

2,475
1
26
36

trying that, getting now: cannot find module providing package github.com/labstack/echo/v4: working directory is not part of a module – user2799827 Jun 26 '20 at 23:49
Run command `go env` and see what's the value for `GO111MODULE`? – Hamza Anis Jun 27 '20 at 00:24

score 2 · Answer 2 · answered Jun 27 '20 at 15:21

2

I get the same issue when I run go get before go mod init. Using the following commands, I can run the server successfully:

go mod init example.com/try-echo
go get
go run server.go

answered Jun 27 '20 at 15:21

ettanany

19,038
9
47
63

score 0 · Answer 3 · answered Jun 27 '20 at 05:36

I just created a new project with the same main.go and it ran without any issue. I have listed the steps I followed.

package main

import (
    "net/http"

    "github.com/labstack/echo/v4"
)

func main() {
    e := echo.New()
    e.GET("/", func(c echo.Context) error {
        return c.String(http.StatusOK, "Hello, World!")
    })
    e.Logger.Fatal(e.Start(":1323"))
}

and used go.mod for dependencies downloads

go mod init

go get

go run main.go

and it ran without any error

       ____    __
  / __/___/ /  ___
 / _// __/ _ \/ _ \
/___/\__/_//_/\___/ v4.1.16
High performance, minimalist Go web framework
https://echo.labstack.com
____________________________________O/_______
                                    O\
⇨ http server started on [::]:1323

I hope this helps. If it doesn't you can run go env and share the result of the command, which will help to debug further.

score 0 · Answer 4 · answered Jun 27 '20 at 05:48

0

export GO111MODULE=on
go mod init
go mod tidy

if not succed, add more command:

go mod download

answered Jun 27 '20 at 05:48

HeartRunner

1

Can't seem to get started with Go and Echo

4 Answers4