Input for Go processing form

Package Main

Import (

"FMT"

"Html/template"

"Log"

"Net/http"

"Strings"

)

Func Main () {

http. Handlefunc ("/", SayHello)   //Set Access routing

http. Handlefunc ("/login", login)//Set Access routing

ERR: = http. Listenandserve (": 9999", nil)//Set the listening address and port

If err! = Nil {

Log. Fatal ("Listenandserve:", err)

}

}

Func SayHello (w http. Responsewriter, R *http. Request) {//For Output first page

R.parseform ()

Fmt. Println (R.form)

Fmt. PRINTLN ("Path", R.url. Path)

Fmt. PRINTLN ("scheme", R.url. Scheme)

For k, V: = Range R.form {

Fmt. Println ("Key:", K)

Fmt. Println ("Value:", strings. Join (V, ""))

}

Fmt. fprintf (W, "Hello Golang")

}

/*

The function performs different actions depending on the submission method.

If the commit method is get, output the login page to the client

Gets the form content submitted by the client if the submission method is post

*/

Func Login (w http. Responsewriter, R *http. Request) {

Fmt. Println ("Method:", R.method)

if R.method = = "GET" {

T, _: = template. Parsefiles ("login.html")

T.execute (W, Nil)

} else {

R.parseform ()//The Parseform method call here is required, otherwise the form contents cannot be obtained below

The following code is a logical processing of the contents of a form

Fmt. Println ("Username:", r.form["username"])

Fmt. Println ("Password:", r.form["password"])

}

}

The console runs directly:

Access the first page using IE:

Console output:

Next, use IE to access the login page:

Console output:

Enter the user name and password, click the login button, submit the data to the background for logical processing:

Console output:

The user name and password in the form are printed in the background.