Why doesn't Template html work in GO?

M

Michail Wowtschuk2017-02-08 12:02:27

go

Michail Wowtschuk, 2017-02-08 12:02:27

Can you please tell me why the error occurs?
Compiling is fine, launching too, the site gives a 404 Error, and an error is thrown in the code.
All my code is located in /root/go
The profile says

export GOPATH=$HOME/go
export PATH=$PATH:/usr/local/go/bin:$GOPATH/bin

The code itself

package main

import (
        "fmt"
        "html/template"
        "net/http"
)


func indexHandler(w http.ResponseWriter, r *http.Request){
        t, err := template.ParseFiles("templates/ip/index.html")

        if err != nil {
                fmt.Fprintf(w, err.Error())
        }

        t.ExecuteTemplate(w, "index", nil)
}

func main() {
    http.HandleFunc("/", indexHandler)
    http.ListenAndServe(":9001", nil)
}

index.html file

<!DOCTYPE html>
<html>
<head>
<title>text</title>
</head>
<body>

Launch and error

[email protected]:~# ./ipa
2017/02/08 03:46:01 http: panic serving 127.0.0.1:61620: runtime error: invalid memory address or nil pointer dereference
goroutine 5 [running]:
net/http.(*conn).serve.func1(0xc4200c6280)
        /usr/local/go/src/net/http/server.go:1491 +0x12a
panic(0x6d4ca0, 0xc42000c0d0)
        /usr/local/go/src/runtime/panic.go:458 +0x243
html/template.(*Template).lookupAndEscapeTemplate(0x0, 0x7269f6, 0x5, 0x0, 0x0, 0x0)
        /usr/local/go/src/html/template/template.go:125 +0x67
html/template.(*Template).ExecuteTemplate(0x0, 0x8825c0, 0xc420015e10, 0x7269f6, 0x5, 0x0, 0x0, 0x37, 0x0)
        /usr/local/go/src/html/template/template.go:114 +0x43
main.indexHandler(0x885fc0, 0xc420015e10, 0xc4200f80f0)
        /root/go/src/ipa/ipa.go:16 +0xe4
net/http.HandlerFunc.ServeHTTP(0x7535b8, 0x885fc0, 0xc420015e10, 0xc4200f80f0)
        /usr/local/go/src/net/http/server.go:1726 +0x44
net/http.(*ServeMux).ServeHTTP(0x8a5dc0, 0x885fc0, 0xc420015e10, 0xc4200f80f0)
        /usr/local/go/src/net/http/server.go:2022 +0x7f
net/http.serverHandler.ServeHTTP(0xc4200c6200, 0x885fc0, 0xc420015e10, 0xc4200f80f0)
        /usr/local/go/src/net/http/server.go:2202 +0x7d
net/http.(*conn).serve(0xc4200c6280, 0x886600, 0xc420016440)
        /usr/local/go/src/net/http/server.go:1579 +0x4b7
created by net/http.(*Server).Serve
        /usr/local/go/src/net/http/server.go:2293 +0x44d

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1 answer(s)

M

Michail Wowtschuk, 2017-02-08
@wowtschuk

Everything worked! Added
{{ index }} and {{ end }} to index.html
and changed path from
t, err := template.ParseFiles("templates/ip/index.html")
to
t, err := template.ParseFiles(" /root/go/templates/ip/index.html")