I am new on GOlang. So, I am inserting the data from an html page to mongodb database. But there is an error in the code. The code is below:-
package main
import (
"fmt"
"gopkg.in/mgo.v2"
"gopkg.in/mgo.v2/bson"
"html/template"
"log"
"net/http"
"strings"
)
type USER struct {
Username string `bson:"Username" json:"Username,omitempty"`
Password string `bson:"Password" json:"Password,omitempty"`
}
func sayhelloName(w http.ResponseWriter, r *http.Request) {
r.ParseForm()
fmt.Println(r.Form)
fmt.Println(r.Form["url_long"])
for k, v := range r.Form {
fmt.Println("key:", k)
fmt.Println("val:", strings.Join(v, ""))
}
fmt.Fprintf(w, "Hello astaxie!")
}
func login(w http.ResponseWriter, r *http.Request) {
fmt.Println("method:", r.Method)
if r.Method == "GET" {
t, _ := template.ParseFiles("index.html")
t.Execute(w, nil)
} else {
//connection with mongodb
session, err := mgo.Dial("mongodb://127.0.0.1:27017/so")
if err != nil {
panic(err)
}
defer session.Close()
session.SetMode(mgo.Monotonic, true)
c := session.DB("so").C("insrt")
doc := USER{
Username: r.Form["username"][0],
Password: r.Form["password"][0],
}
err = c.Insert(doc)
if err != nil {
panic(err)
}
r.ParseForm()
fmt.Printf("%T
", r.Form["username"])
fmt.Println("---------------------------------------------")
fmt.Println("username:", r.Form["username"][0])//output:- username: user_name
fmt.Println("password:", r.Form["password"][0])//password:- password: user_password
}
}
func main() {
http.HandleFunc("/", sayhelloName)
http.HandleFunc("/login", login)
err := http.ListenAndServe(":9090", nil)
if err != nil {
log.Fatal("ListenAndServe: ", err)
}
}
index.html
<html>
<head>
<title></title>
</head>
<body>
<form action="/login" method="post">
Username:<input type="text" name="username">
Password:<input type="password" name="password">
<input type="submit" value="Login">
</form>
</body>
</html>
From the above code the user will entered the data in the html form by accessing url localhost:9090/login when user click on submit button then the data will shown in the terminal I comment the mongodb code but when i want to save that data then it gives me error.
error:-2018/03/24 14:48:28 http: panic serving [::1]:44410: runtime error: index out of range goroutine 5 [running]: net/http.(*conn).serve.func1(0xc420094c80) /usr/local/go/src/net/http/server.go:1726 +0xd0 panic(0x78aa20, 0xa03de0) /usr/local/go/src/runtime/panic.go:505 +0x229 main.login(0x846c80, 0xc42015c0e0, 0xc42018a000) /home/iron/go/src/go-training/pagesweb/main.go:48 +0x767 net/http.HandlerFunc.ServeHTTP(0x8147d0, 0x846c80, 0xc42015c0e0, 0xc42018a000) /usr/local/go/src/net/http/server.go:1947 +0x44 net/http.(*ServeMux).ServeHTTP(0xa132c0, 0x846c80, 0xc42015c0e0, 0xc42018a000) /usr/local/go/src/net/http/server.go:2337 +0x130 net/http.serverHandler.ServeHTTP(0xc42008b2b0, 0x846c80, 0xc42015c0e0, 0xc42018a000) /usr/local/go/src/net/http/server.go:2694 +0xbc net/http.(*conn).serve(0xc420094c80, 0x847080, 0xc420146040) /usr/local/go/src/net/http/server.go:1830 +0x651 created by net/http.(*Server).Serve /usr/local/go/src/net/http/server.go:2795 +0x27b
Anybody can help me to solve my problem. I just want to save the data. in document of mongodb.
