1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
package web_test
import (
"fmt"
"log"
"net/http"
"regexp"
"github.com/zenazn/goji/web"
"github.com/zenazn/goji/web/middleware"
)
func Example() {
m := web.New()
// Use your favorite HTTP verbs and the interfaces you know and love
// from net/http:
m.Get("/hello", func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "Why hello there!\n")
})
m.Post("/login", func(w http.ResponseWriter, r *http.Request) {
if r.FormValue("password") != "god" {
http.Error(w, "Hack the planet!", 401)
}
})
// Handlers can optionally take a context parameter, which contains
// (among other things) a set of bound parameters.
hello := func(c web.C, w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "Hello, %s!\n", c.URLParams["name"])
}
// Bind parameters using pattern strings...
m.Get("/hello/:name", hello)
// ...or use regular expressions if you need additional power.
bonjour := regexp.MustCompile(`^/bonjour/(?P<name>[A-Za-z]+)$`)
m.Get(bonjour, hello)
// Middleware are a great abstraction for performing logic on every
// request. Some middleware use the Goji context object to set
// request-scoped variables.
logger := func(h http.Handler) http.Handler {
wrap := func(w http.ResponseWriter, r *http.Request) {
log.Println("Before request")
h.ServeHTTP(w, r)
log.Println("After request")
}
return http.HandlerFunc(wrap)
}
auth := func(c *web.C, h http.Handler) http.Handler {
wrap := func(w http.ResponseWriter, r *http.Request) {
if cookie, err := r.Cookie("user"); err == nil {
c.Env["user"] = cookie.Value
}
h.ServeHTTP(w, r)
}
return http.HandlerFunc(wrap)
}
// A Middleware stack is a flexible way to assemble the common
// components of your application, like request loggers and
// authentication. There is an ecosystem of open-source middleware for
// Goji, so there's a chance someone has already written the middleware
// you are looking for!
m.Use(middleware.EnvInit)
m.Use(logger)
m.Use(auth)
}
|
