modify

 package beego
 
-import "fmt"
+import "./core"
 
-func main(){
-	fmt.Printf("hello world")
+type C struct {
+	core.Content
+}
+
+type M struct{
+	core.Model
+}
+
+type D struct{
+	core.Config
+}
+
+type U struct{
+	core.URL
+}
+
+type A struct{
+	core.Controller
+}
+
+type V struct{
+	core.View
 }
\ No newline at end of file

+package beego
+
+// Interface for controller types that handle requests
+type Controller interface {
+
+        // When implemented, handles the request
+        HandleRequest(c *Context)
+}
+
+// The ControllerFunc type is an adapter to allow the use of
+// ordinary functions as goweb handlers.  If f is a function
+// with the appropriate signature, ControllerFunc(f) is a
+// Controller object that calls f.
+type ControllerFunc func(*Context)
+
+// HandleRequest calls f(c).
+func (f ControllerFunc) HandleRequest(c *Context) {
+        f(c)
+}
\ No newline at end of file

+package beego
+
+import (
+        "regexp"
+        "strings"
+)
+
+/*
+        Route
+*/
+
+// Represents a single route mapping
+type Route struct {
+        pattern       string
+        parameterKeys ParameterKeyMap
+        extension     string
+        Path          string
+        Controller    Controller
+        MatcherFuncs  []RouteMatcherFunc
+}
+
+func (r *Route) String() string {
+        return "{Route:'" + r.Path + "'}"
+}
+
+// Makes a new route from the given path
+func makeRouteFromPath(path string) *Route {
+
+        // get the path segments
+        segments := getPathSegments(path)
+        regexSegments := make([]string, len(segments))
+
+        // prepare the parameter key map
+        var paramKeys ParameterKeyMap = make(ParameterKeyMap)
+
+        var extension string
+
+        // pull out any dynamic segments
+        for index, _ := range segments {
+
+                if isDynamicSegment(segments[index]) {
+
+                        // e.g. {id}
+
+                        paramKeys[strings.Trim(segments[index], "{}")] = index
+                        regexSegments[index] = ROUTE_REGEX_PLACEHOLDER
+
+                } else if isExtensionSegment(segments[index]) {
+
+                        // e.g. .json
+                        extension = segments[index]
+
+                        // trim off the last space (we don't need it)
+                        regexSegments = regexSegments[0 : len(regexSegments)-1]
+
+                } else {
+
+                        // e.g. "groups"
+
+                        regexSegments[index] = segments[index]
+
+                }
+
+        }
+
+        patternString := "/" + strings.Join(regexSegments, "/")
+
+        // return a new route
+        var route *Route = new(Route)
+        route.pattern = patternString
+        route.extension = extension
+        route.parameterKeys = paramKeys
+        route.Path = path
+        route.Controller = nil
+        return route
+
+}
+
+// Gets the parameter values for the route from the specified path
+func (route *Route) getParameterValueMap(path string) ParameterValueMap {
+        return getParameterValueMap(route.parameterKeys, path)
+}
+
+// Checks whether a path matches a route or not
+func (route *Route) DoesMatchPath(path string) bool {
+
+        match, error := regexp.MatchString(route.pattern, path)
+
+        if error == nil {
+                if match {
+
+                        if len(route.extension) > 0 {
+
+                                // make sure the extensions match too
+                                return strings.HasSuffix(strings.ToLower(path), strings.ToLower(route.extension))
+
+                        } else {
+                                return match
+                        }
+
+                } else {
+
+                        return false
+
+                }
+
+        }
+
+        // error :-(
+        return false
+
+}
+
+// Checks whether the context for this request matches the route
+func (route *Route) DoesMatchContext(c *Context) bool {
+
+        // by default, we match
+        var match bool = true
+
+        if len(route.MatcherFuncs) > 0 {
+
+                // there are some matcher functions, so don't automatically
+                // match by default - let the matchers decide
+                match = false
+
+                // loop through the matcher functions
+                for _, f := range route.MatcherFuncs {
+
+                        // modify 'match' based on the result of the matcher function
+                        switch f(c) {
+                        case NoMatch:
+                                match = false
+                        case Match:
+                                match = true
+                        }
+
+                }
+
+        }
+
+        // return the result
+        return match
+
+}
\ No newline at end of file

+package server
+
+import (
+	"bufio"
+	"bytes"
+	"errors"
+	"io"
+	"log"
+	"net"
+	"net/url"
+	"runtime/debug"
+	"strconv"
+	"strings"
+)
\ No newline at end of file

+// Copyright 2011 Google Inc. All rights reserved.
+// Use of this source code is governed by the Apache 2.0
+// license that can be found in the LICENSE file.
+
+package guestbook
+
+import (
+	"io"
+	"net/http"
+	"text/template"
+	"time"
+
+	"appengine"
+	"appengine/datastore"
+	"appengine/user"
+)
+
+type Greeting struct {
+	Author  string
+	Content string
+	Date    time.Time
+}
+
+func serve404(w http.ResponseWriter) {
+	w.WriteHeader(http.StatusNotFound)
+	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+	io.WriteString(w, "Not Found")
+}
+
+func serveError(c appengine.Context, w http.ResponseWriter, err error) {
+	w.WriteHeader(http.StatusInternalServerError)
+	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+	io.WriteString(w, "Internal Server Error")
+	c.Errorf("%v", err)
+}
+
+var mainPage = template.Must(template.New("guestbook").Parse(
+	`<html><body>
+{{range .}}
+{{with .Author}}<b>{{.|html}}</b>{{else}}An anonymous person{{end}}
+on <em>{{.Date.Format "3:04pm, Mon 2 Jan"}}</em>
+wrote <blockquote>{{.Content|html}}</blockquote>
+{{end}}
+<form action="/sign" method="post">
+<div><textarea name="content" rows="3" cols="60"></textarea></div>
+<div><input type="submit" value="Sign Guestbook"></div>
+</form></body></html>
+`))
+
+func handleMainPage(w http.ResponseWriter, r *http.Request) {
+	if r.Method != "GET" || r.URL.Path != "/" {
+		serve404(w)
+		return
+	}
+	c := appengine.NewContext(r)
+	q := datastore.NewQuery("Greeting").Order("-Date").Limit(10)
+	var gg []*Greeting
+	_, err := q.GetAll(c, &gg)
+	if err != nil {
+		serveError(c, w, err)
+		return
+	}
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	if err := mainPage.Execute(w, gg); err != nil {
+		c.Errorf("%v", err)
+	}
+}
+
+func handleSign(w http.ResponseWriter, r *http.Request) {
+	if r.Method != "POST" {
+		serve404(w)
+		return
+	}
+	c := appengine.NewContext(r)
+	if err := r.ParseForm(); err != nil {
+		serveError(c, w, err)
+		return
+	}
+	g := &Greeting{
+		Content: r.FormValue("content"),
+		Date:    time.Now(),
+	}
+	if u := user.Current(c); u != nil {
+		g.Author = u.String()
+	}
+	if _, err := datastore.Put(c, datastore.NewIncompleteKey(c, "Greeting", nil), g); err != nil {
+		serveError(c, w, err)
+		return
+	}
+	http.Redirect(w, r, "/", http.StatusFound)
+}
+
+func init() {
+	http.HandleFunc("/", handleMainPage)
+	http.HandleFunc("/sign", handleSign)
+}

+application: guestbook-go
+handlers:
+- url: /.*

+package helloworld
+
+import (
+	"fmt"
+	"net/http"
+)
+
+func init() {
+	http.HandleFunc("/", handle)
+}
+
+func handle(w http.ResponseWriter, r *http.Request) {
+	fmt.Fprint(w, "<html><body>Hello, World! 세상아 안녕!</body></html>")
+}