func (p *ControllerRegister) Put(pattern string, f FilterFunc) {
	p.AddMethod("put", pattern, f)
}
Put add put method
usage:
Put("/api/:id", func(ctx *context.Context){
ctx.Output.Body("hello world")
})
package beego
import (
	"errors"
	"fmt"
	"net/http"
	"path"
	"path/filepath"
	"reflect"
	"strconv"
	"strings"
	"sync"
	"time"
	beecontext "github.com/astaxie/beego/context"
	"github.com/astaxie/beego/context/param"
	"github.com/astaxie/beego/logs"
	"github.com/astaxie/beego/toolbox"
	"github.com/astaxie/beego/utils"
)
const (
	BeforeStatic = iota
	BeforeRouter
	BeforeExec
	AfterExec
	FinishRouter
)
const (
	routerTypeBeego = iota
	routerTypeRESTFul
	routerTypeHandler
)
var (
	HTTPMETHOD = map[string]bool{
		"GET":       true,
		"POST":      true,
		"PUT":       true,
		"DELETE":    true,
		"PATCH":     true,
		"OPTIONS":   true,
		"HEAD":      true,
		"TRACE":     true,
		"CONNECT":   true,
		"MKCOL":     true,
		"COPY":      true,
		"MOVE":      true,
		"PROPFIND":  true,
		"PROPPATCH": true,
		"LOCK":      true,
		"UNLOCK":    true,
	}
	exceptMethod = []string{"Init", "Prepare", "Finish", "Render", "RenderString",
		"RenderBytes", "Redirect", "Abort", "StopRun", "UrlFor", "ServeJSON", "ServeJSONP",
		"ServeYAML", "ServeXML", "Input", "ParseForm", "GetString", "GetStrings", "GetInt", "GetBool",
		"GetFloat", "GetFile", "SaveToFile", "StartSession", "SetSession", "GetSession",
		"DelSession", "SessionRegenerateID", "DestroySession", "IsAjax", "GetSecureCookie",
		"SetSecureCookie", "XsrfToken", "CheckXsrfCookie", "XsrfFormHtml",
		"GetControllerAndAction", "ServeFormatted"}
	urlPlaceholder = "{{placeholder}}"
	DefaultAccessLogFilter FilterHandler = &logFilter{}
)
type FilterHandler interface {
	Filter(*beecontext.Context) bool
}
type logFilter struct {
}
func (l *logFilter) Filter(ctx *beecontext.Context) bool {
	requestPath := path.Clean(ctx.Request.URL.Path)
	if requestPath == "/favicon.ico" || requestPath == "/robots.txt" {
		return true
	}
	for prefix := range BConfig.WebConfig.StaticDir {
		if strings.HasPrefix(requestPath, prefix) {
			return true
		}
	}
	return false
}
func ExceptMethodAppend(action string) {
	exceptMethod = append(exceptMethod, action)
}
type ControllerInfo struct {
	pattern        string
	controllerType reflect.Type
	methods        map[string]string
	handler        http.Handler
	runFunction    FilterFunc
	routerType     int
	initialize     func() ControllerInterface
	methodParams   []*param.MethodParam
}
type ControllerRegister struct {
	routers      map[string]*Tree
	enablePolicy bool
	policies     map[string]*Tree
	enableFilter bool
	filters      [FinishRouter + 1][]*FilterRouter
	pool         sync.Pool
}
func NewControllerRegister() *ControllerRegister {
	return &ControllerRegister{
		routers:  make(map[string]*Tree),
		policies: make(map[string]*Tree),
		pool: sync.Pool{
			New: func() interface{} {
				return beecontext.NewContext()
			},
		},
	}
}
func (p *ControllerRegister) Add(pattern string, c ControllerInterface, mappingMethods ...string) {
	p.addWithMethodParams(pattern, c, nil, mappingMethods...)
}
func (p *ControllerRegister) addWithMethodParams(pattern string, c ControllerInterface, methodParams []*param.MethodParam, mappingMethods ...string) {
	reflectVal := reflect.ValueOf(c)
	t := reflect.Indirect(reflectVal).Type()
	methods := make(map[string]string)
	if len(mappingMethods) > 0 {
		semi := strings.Split(mappingMethods[0], ";")
		for _, v := range semi {
			colon := strings.Split(v, ":")
			if len(colon) != 2 {
				panic("method mapping format is invalid")
			}
			comma := strings.Split(colon[0], ",")
			for _, m := range comma {
				if m == "*" || HTTPMETHOD[strings.ToUpper(m)] {
					if val := reflectVal.MethodByName(colon[1]); val.IsValid() {
						methods[strings.ToUpper(m)] = colon[1]
					} else {
						panic("'" + colon[1] + "' method doesn't exist in the controller " + t.Name())
					}
				} else {
					panic(v + " is an invalid method mapping. Method doesn't exist " + m)
				}
			}
		}
	}
	route := &ControllerInfo{}
	route.pattern = pattern
	route.methods = methods
	route.routerType = routerTypeBeego
	route.controllerType = t
	route.initialize = func() ControllerInterface {
		vc := reflect.New(route.controllerType)
		execController, ok := vc.Interface().(ControllerInterface)
		if !ok {
			panic("controller is not ControllerInterface")
		}
		elemVal := reflect.ValueOf(c).Elem()
		elemType := reflect.TypeOf(c).Elem()
		execElem := reflect.ValueOf(execController).Elem()
		numOfFields := elemVal.NumField()
		for i := 0; i < numOfFields; i++ {
			fieldType := elemType.Field(i)
			elemField := execElem.FieldByName(fieldType.Name)
			if elemField.CanSet() {
				fieldVal := elemVal.Field(i)
				elemField.Set(fieldVal)
			}
		}
		return execController
	}
	route.methodParams = methodParams
	if len(methods) == 0 {
		for m := range HTTPMETHOD {
			p.addToRouter(m, pattern, route)
		}
	} else {
		for k := range methods {
			if k == "*" {
				for m := range HTTPMETHOD {
					p.addToRouter(m, pattern, route)
				}
			} else {
				p.addToRouter(k, pattern, route)
			}
		}
	}
}
func (p *ControllerRegister) addToRouter(method, pattern string, r *ControllerInfo) {
	if !BConfig.RouterCaseSensitive {
		pattern = strings.ToLower(pattern)
	}
	if t, ok := p.routers[method]; ok {
		t.AddRouter(pattern, r)
	} else {
		t := NewTree()
		t.AddRouter(pattern, r)
		p.routers[method] = t
	}
}
func (p *ControllerRegister) Include(cList ...ControllerInterface) {
	if BConfig.RunMode == DEV {
		skip := make(map[string]bool, 10)
		for _, c := range cList {
			reflectVal := reflect.ValueOf(c)
			t := reflect.Indirect(reflectVal).Type()
			wgopath := utils.GetGOPATHs()
			if len(wgopath) == 0 {
				panic("you are in dev mode. So please set gopath")
			}
			pkgpath := ""
			for _, wg := range wgopath {
				wg, _ = filepath.EvalSymlinks(filepath.Join(wg, "src", t.PkgPath()))
				if utils.FileExists(wg) {
					pkgpath = wg
					break
				}
			}
			if pkgpath != "" {
				if _, ok := skip[pkgpath]; !ok {
					skip[pkgpath] = true
					parserPkg(pkgpath, t.PkgPath())
				}
			}
		}
	}
	for _, c := range cList {
		reflectVal := reflect.ValueOf(c)
		t := reflect.Indirect(reflectVal).Type()
		key := t.PkgPath() + ":" + t.Name()
		if comm, ok := GlobalControllerRouter[key]; ok {
			for _, a := range comm {
				for _, f := range a.Filters {
					p.InsertFilter(f.Pattern, f.Pos, f.Filter, f.ReturnOnOutput, f.ResetParams)
				}
				p.addWithMethodParams(a.Router, c, a.MethodParams, strings.Join(a.AllowHTTPMethods, ",")+":"+a.Method)
			}
		}
	}
}
func (p *ControllerRegister) Get(pattern string, f FilterFunc) {
	p.AddMethod("get", pattern, f)
}
func (p *ControllerRegister) Post(pattern string, f FilterFunc) {
	p.AddMethod("post", pattern, f)
}