路由层级注册

GF框架的层级路由注册方式灵感来源于PHP Laravel框架。

推荐使用路由层级注册方式，注册的路由代码更清晰直观。

GF框架的分组路由注册支持更加直观优雅层级的注册方式，以便于开发者更方便地管理路由列表。路由层级注册方式也是推荐的路由注册方式。

我们来看一个比较完整的示例，该示例中注册了使用到了中间件、HOOK以及不同HTTP Method绑定的路由注册：

package main
import (
    "net/http"
    "github.com/gogf/gf/frame/g"
    "github.com/gogf/gf/net/ghttp"
)
func MiddlewareAuth(r *ghttp.Request) {
    token := r.Get("token")
    if token == "123456" {
        r.Middleware.Next()
    } else {
        r.Response.WriteStatus(http.StatusForbidden)
    }
}
func MiddlewareCORS(r *ghttp.Request) {
    r.Response.CORSDefault()
    r.Middleware.Next()
}
func MiddlewareLog(r *ghttp.Request) {
    r.Middleware.Next()
    g.Log().Println(r.Response.Status, r.URL.Path)
}
func main() {
    s := g.Server()
    s.Use(MiddlewareLog)
    s.Group("/api.v2", func(group *ghttp.RouterGroup) {
        group.Middleware(MiddlewareAuth, MiddlewareCORS)
        group.GET("/test", func(r *ghttp.Request) {
            r.Response.Write("test")
        })
        group.Group("/order", func(group *ghttp.RouterGroup) {
            group.GET("/list", func(r *ghttp.Request) {
                r.Response.Write("list")
            })
            group.PUT("/update", func(r *ghttp.Request) {
                r.Response.Write("update")
            })
        })
        group.Group("/user", func(group *ghttp.RouterGroup) {
            group.GET("/info", func(r *ghttp.Request) {
                r.Response.Write("info")
            })
            group.POST("/edit", func(r *ghttp.Request) {
                r.Response.Write("edit")
            })
            group.DELETE("/drop", func(r *ghttp.Request) {
                r.Response.Write("drop")
            })
        })
        group.Group("/hook", func(group *ghttp.RouterGroup) {
            group.Hook("/*", ghttp.HOOK_BEFORE_SERVE, func(r *ghttp.Request) {
                r.Response.Write("hook any")
            })
            group.Hook("/:name", ghttp.HOOK_BEFORE_SERVE, func(r *ghttp.Request) {
                r.Response.Write("hook name")
            })
        })
    })
    s.SetPort(8199)
    s.Run()
}

执行后，注册的路由列表如下：

  SERVER  | DOMAIN  | ADDRESS | METHOD |        ROUTE         |       HANDLER       |               MIDDLEWARE                 
|---------|---------|---------|--------|----------------------|---------------------|-----------------------------------------|
  default | default | :8199   | ALL    | /*                   | main.MiddlewareLog  | GLOBAL MIDDLEWARE                        
|---------|---------|---------|--------|----------------------|---------------------|-----------------------------------------|
  default | default | :8199   | ALL    | /api.v2/hook/*       | main.main.func1.4.1 | HOOK_BEFORE_SERVE                        
|---------|---------|---------|--------|----------------------|---------------------|-----------------------------------------|
  default | default | :8199   | ALL    | /api.v2/hook/:name   | main.main.func1.4.2 | HOOK_BEFORE_SERVE                        
|---------|---------|---------|--------|----------------------|---------------------|-----------------------------------------|
  default | default | :8199   | GET    | /api.v2/order/list   | main.main.func1.2.1 | main.MiddlewareAuth,main.MiddlewareCORS  
|---------|---------|---------|--------|----------------------|---------------------|-----------------------------------------|
  default | default | :8199   | PUT    | /api.v2/order/update | main.main.func1.2.2 | main.MiddlewareAuth,main.MiddlewareCORS  
|---------|---------|---------|--------|----------------------|---------------------|-----------------------------------------|
  default | default | :8199   | GET    | /api.v2/test         | main.main.func1.1   | main.MiddlewareAuth,main.MiddlewareCORS  
|---------|---------|---------|--------|----------------------|---------------------|-----------------------------------------|
  default | default | :8199   | DELETE | /api.v2/user/drop    | main.main.func1.3.3 | main.MiddlewareAuth,main.MiddlewareCORS  
|---------|---------|---------|--------|----------------------|---------------------|-----------------------------------------|
  default | default | :8199   | POST   | /api.v2/user/edit    | main.main.func1.3.2 | main.MiddlewareAuth,main.MiddlewareCORS  
|---------|---------|---------|--------|----------------------|---------------------|-----------------------------------------|
  default | default | :8199   | GET    | /api.v2/user/info    | main.main.func1.3.1 | main.MiddlewareAuth,main.MiddlewareCORS  
|---------|---------|---------|--------|----------------------|---------------------|-----------------------------------------|