diff --git a/filter.go b/filter.go
index 7dbc7028..cefd74a1 100644
--- a/filter.go
+++ b/filter.go
@@ -32,13 +32,13 @@ type FilterRouter struct {
 // ValidRouter checks if the current request is matched by this filter.
 // If the request is matched, the values of the URL parameters defined
 // by the filter pattern are also returned.
-func (f *FilterRouter) ValidRouter(url string) (bool, map[string]string) {
-	isok, params := f.tree.Match(url)
+func (f *FilterRouter) ValidRouter(url string, ctx *context.Context) bool {
+	isok := f.tree.Match(url, ctx)
 	if isok == nil {
-		return false, nil
+		return false
 	}
 	if isok, ok := isok.(bool); ok {
-		return isok, params
+		return isok
 	}
-	return false, nil
+	return false
 }
diff --git a/router.go b/router.go
index 01dae8aa..effc2b41 100644
--- a/router.go
+++ b/router.go
@@ -583,13 +583,7 @@ func (p *ControllerRegister) execFilter(context *beecontext.Context, pos int, ur
 				if filterR.returnOnOutput && context.ResponseWriter.Started {
 					return true
 				}
-				if ok, params := filterR.ValidRouter(urlPath); ok {
-					for k, v := range params {
-						if context.Input.Params == nil {
-							context.Input.Params = make(map[string]string)
-						}
-						context.Input.Params[k] = v
-					}
+				if ok := filterR.ValidRouter(urlPath, context); ok {
 					filterR.filterFunc(context)
 				}
 				if filterR.returnOnOutput && context.ResponseWriter.Started {
@@ -677,19 +671,16 @@ func (p *ControllerRegister) ServeHTTP(rw http.ResponseWriter, r *http.Request)
 			httpMethod = "DELETE"
 		}
 		if t, ok := p.routers[httpMethod]; ok {
-			runObject, p := t.Match(urlPath)
+			runObject := t.Match(urlPath, context)
 			if r, ok := runObject.(*controllerInfo); ok {
 				routerInfo = r
 				findrouter = true
-				if splat, ok := p[":splat"]; ok {
+				if splat, ok := context.Input.Params[":splat"]; ok {
 					splatlist := strings.Split(splat, "/")
 					for k, v := range splatlist {
-						p[strconv.Itoa(k)] = v
+						context.Input.Params[strconv.Itoa(k)] = v
 					}
 				}
-				if p != nil {
-					context.Input.Params = p
-				}
 			}
 		}
 
diff --git a/tree.go b/tree.go
index bbda2840..e23ce2fc 100644
--- a/tree.go
+++ b/tree.go
@@ -19,6 +19,7 @@ import (
 	"regexp"
 	"strings"
 
+	"github.com/astaxie/beego/context"
 	"github.com/astaxie/beego/utils"
 )
 
@@ -277,64 +278,60 @@ func (t *Tree) addseg(segments []string, route interface{}, wildcards []string,
 }
 
 // Match router to runObject & params
-func (t *Tree) Match(pattern string) (runObject interface{}, params map[string]string) {
+func (t *Tree) Match(pattern string, ctx *context.Context) (runObject interface{}) {
 	if len(pattern) == 0 || pattern[0] != '/' {
-		return nil, nil
+		return nil
 	}
 
-	return t.match(splitPath(pattern), nil)
+	return t.match(splitPath(pattern), nil, ctx)
 }
 
-func (t *Tree) match(segments []string, wildcardValues []string) (runObject interface{}, params map[string]string) {
+func (t *Tree) match(segments []string, wildcardValues []string, ctx *context.Context) (runObject interface{}) {
 	// Handle leaf nodes:
 	if len(segments) == 0 {
 		for _, l := range t.leaves {
-			if ok, pa := l.match(wildcardValues); ok {
-				return l.runObject, pa
+			if ok := l.match(wildcardValues, ctx); ok {
+				return l.runObject
 			}
 		}
 		if t.wildcard != nil {
 			for _, l := range t.wildcard.leaves {
-				if ok, pa := l.match(wildcardValues); ok {
-					return l.runObject, pa
+				if ok := l.match(wildcardValues, ctx); ok {
+					return l.runObject
 				}
 			}
-
 		}
-		return nil, nil
+		return nil
 	}
 
 	seg, segs := segments[0], segments[1:]
 
 	subTree, ok := t.fixrouters[seg]
 	if ok {
-		runObject, params = subTree.match(segs, wildcardValues)
+		runObject = subTree.match(segs, wildcardValues, ctx)
 	} else if len(segs) == 0 { //.json .xml
 		if subindex := strings.LastIndex(seg, "."); subindex != -1 {
 			subTree, ok = t.fixrouters[seg[:subindex]]
 			if ok {
-				runObject, params = subTree.match(segs, wildcardValues)
+				runObject = subTree.match(segs, wildcardValues, ctx)
 				if runObject != nil {
-					if params == nil {
-						params = make(map[string]string)
-					}
-					params[":ext"] = seg[subindex+1:]
-					return runObject, params
+					ctx.Input.Params[":ext"] = seg[subindex+1:]
+					return runObject
 				}
 			}
 		}
 	}
 	if runObject == nil && t.wildcard != nil {
-		runObject, params = t.wildcard.match(segs, append(wildcardValues, seg))
+		runObject = t.wildcard.match(segs, append(wildcardValues, seg), ctx)
 	}
 	if runObject == nil {
 		for _, l := range t.leaves {
-			if ok, pa := l.match(append(wildcardValues, segments...)); ok {
-				return l.runObject, pa
+			if ok := l.match(append(wildcardValues, segments...), ctx); ok {
+				return l.runObject
 			}
 		}
 	}
-	return runObject, params
+	return runObject
 }
 
 type leafInfo struct {
@@ -347,47 +344,43 @@ type leafInfo struct {
 	runObject interface{}
 }
 
-func (leaf *leafInfo) match(wildcardValues []string) (ok bool, params map[string]string) {
+func (leaf *leafInfo) match(wildcardValues []string, ctx *context.Context) (ok bool) {
 	if leaf.regexps == nil {
 		// has error
 		if len(wildcardValues) == 0 && len(leaf.wildcards) > 0 {
 			if utils.InSlice(":", leaf.wildcards) {
-				params = make(map[string]string)
 				j := 0
 				for _, v := range leaf.wildcards {
 					if v == ":" {
 						continue
 					}
-					params[v] = ""
+					ctx.Input.Params[v] = ""
 					j++
 				}
-				return true, params
+				return true
 			}
-			return false, nil
+			return false
 		} else if len(wildcardValues) == 0 { // static path
-			return true, nil
+			return true
 		}
 		// match *
 		if len(leaf.wildcards) == 1 && leaf.wildcards[0] == ":splat" {
-			params = make(map[string]string)
-			params[":splat"] = path.Join(wildcardValues...)
-			return true, params
+			ctx.Input.Params[":splat"] = path.Join(wildcardValues...)
+			return true
 		}
 		// match *.*
 		if len(leaf.wildcards) == 3 && leaf.wildcards[0] == "." {
-			params = make(map[string]string)
 			lastone := wildcardValues[len(wildcardValues)-1]
 			strs := strings.SplitN(lastone, ".", 2)
 			if len(strs) == 2 {
-				params[":ext"] = strs[1]
+				ctx.Input.Params[":ext"] = strs[1]
 			} else {
-				params[":ext"] = ""
+				ctx.Input.Params[":ext"] = ""
 			}
-			params[":path"] = path.Join(wildcardValues[:len(wildcardValues)-1]...) + "/" + strs[0]
-			return true, params
+			ctx.Input.Params[":path"] = path.Join(wildcardValues[:len(wildcardValues)-1]...) + "/" + strs[0]
+			return true
 		}
 		// match :id
-		params = make(map[string]string)
 		j := 0
 		for _, v := range leaf.wildcards {
 			if v == ":" {
@@ -397,38 +390,37 @@ func (leaf *leafInfo) match(wildcardValues []string) (ok bool, params map[string
 				lastone := wildcardValues[len(wildcardValues)-1]
 				strs := strings.SplitN(lastone, ".", 2)
 				if len(strs) == 2 {
-					params[":ext"] = strs[1]
+					ctx.Input.Params[":ext"] = strs[1]
 				} else {
-					params[":ext"] = ""
+					ctx.Input.Params[":ext"] = ""
 				}
 				if len(wildcardValues[j:]) == 1 {
-					params[":path"] = strs[0]
+					ctx.Input.Params[":path"] = strs[0]
 				} else {
-					params[":path"] = path.Join(wildcardValues[j:]...) + "/" + strs[0]
+					ctx.Input.Params[":path"] = path.Join(wildcardValues[j:]...) + "/" + strs[0]
 				}
-				return true, params
+				return true
 			}
 			if len(wildcardValues) <= j {
-				return false, nil
+				return false
 			}
-			params[v] = wildcardValues[j]
+			ctx.Input.Params[v] = wildcardValues[j]
 			j++
 		}
-		if len(params) != len(wildcardValues) {
-			return false, nil
+		if len(ctx.Input.Params) != len(wildcardValues) {
+			return false
 		}
-		return true, params
+		return true
 	}
 
 	if !leaf.regexps.MatchString(path.Join(wildcardValues...)) {
-		return false, nil
+		return false
 	}
-	params = make(map[string]string)
 	matches := leaf.regexps.FindStringSubmatch(path.Join(wildcardValues...))
 	for i, match := range matches[1:] {
-		params[leaf.wildcards[i]] = match
+		ctx.Input.Params[leaf.wildcards[i]] = match
 	}
-	return true, params
+	return true
 }
 
 // "/" -> []
diff --git a/tree_test.go b/tree_test.go
index 7fe70f51..22a7b6f1 100644
--- a/tree_test.go
+++ b/tree_test.go
@@ -14,7 +14,11 @@
 
 package beego
 
-import "testing"
+import (
+	"testing"
+
+	"github.com/astaxie/beego/context"
+)
 
 type testinfo struct {
 	url        string
@@ -27,11 +31,11 @@ var routers []testinfo
 func init() {
 	routers = make([]testinfo, 0)
 	routers = append(routers, testinfo{"/topic/?:auth:int", "/topic", nil})
-	routers = append(routers, testinfo{"/topic/?:auth:int", "/topic/123", map[string]string{":auth":"123"}})
+	routers = append(routers, testinfo{"/topic/?:auth:int", "/topic/123", map[string]string{":auth": "123"}})
 	routers = append(routers, testinfo{"/topic/:id/?:auth", "/topic/1", map[string]string{":id": "1"}})
-	routers = append(routers, testinfo{"/topic/:id/?:auth", "/topic/1/2", map[string]string{":id": "1",":auth":"2"}})
+	routers = append(routers, testinfo{"/topic/:id/?:auth", "/topic/1/2", map[string]string{":id": "1", ":auth": "2"}})
 	routers = append(routers, testinfo{"/topic/:id/?:auth:int", "/topic/1", map[string]string{":id": "1"}})
-	routers = append(routers, testinfo{"/topic/:id/?:auth:int", "/topic/1/123", map[string]string{":id": "1",":auth":"123"}})
+	routers = append(routers, testinfo{"/topic/:id/?:auth:int", "/topic/1/123", map[string]string{":id": "1", ":auth": "123"}})
 	routers = append(routers, testinfo{"/:id", "/123", map[string]string{":id": "123"}})
 	routers = append(routers, testinfo{"/hello/?:id", "/hello", map[string]string{":id": ""}})
 	routers = append(routers, testinfo{"/", "/", nil})
@@ -69,13 +73,14 @@ func TestTreeRouters(t *testing.T) {
 	for _, r := range routers {
 		tr := NewTree()
 		tr.AddRouter(r.url, "astaxie")
-		obj, param := tr.Match(r.requesturl)
+		ctx := context.NewContext()
+		obj := tr.Match(r.requesturl, ctx)
 		if obj == nil || obj.(string) != "astaxie" {
 			t.Fatal(r.url + " can't get obj ")
 		}
 		if r.params != nil {
 			for k, v := range r.params {
-				if vv, ok := param[k]; !ok {
+				if vv, ok := ctx.Input.Params[k]; !ok {
 					t.Fatal(r.url + "    " + r.requesturl + " get param empty:" + k)
 				} else if vv != v {
 					t.Fatal(r.url + "     " + r.requesturl + " should be:" + v + " get param:" + vv)
@@ -91,47 +96,51 @@ func TestAddTree(t *testing.T) {
 	tr.AddRouter("/shop/:sd/ttt_:id(.+)_:page(.+).html", "astaxie")
 	t1 := NewTree()
 	t1.AddTree("/v1/zl", tr)
-	obj, param := t1.Match("/v1/zl/shop/123/account")
+	ctx := context.NewContext()
+	obj := t1.Match("/v1/zl/shop/123/account", ctx)
 	if obj == nil || obj.(string) != "astaxie" {
 		t.Fatal("/v1/zl/shop/:id/account can't get obj ")
 	}
-	if param == nil {
+	if len(ctx.Input.Params) == 0 {
 		t.Fatal("get param error")
 	}
-	if param[":id"] != "123" {
+	if ctx.Input.Params[":id"] != "123" {
 		t.Fatal("get :id param error")
 	}
-	obj, param = t1.Match("/v1/zl/shop/123/ttt_1_12.html")
+	ctx.Input.Reset(ctx)
+	obj = t1.Match("/v1/zl/shop/123/ttt_1_12.html", ctx)
 	if obj == nil || obj.(string) != "astaxie" {
 		t.Fatal("/v1/zl//shop/:sd/ttt_:id(.+)_:page(.+).html can't get obj ")
 	}
-	if param == nil {
+	if len(ctx.Input.Params) == 0 {
 		t.Fatal("get param error")
 	}
-	if param[":sd"] != "123" || param[":id"] != "1" || param[":page"] != "12" {
+	if ctx.Input.Params[":sd"] != "123" || ctx.Input.Params[":id"] != "1" || ctx.Input.Params[":page"] != "12" {
 		t.Fatal("get :sd :id :page param error")
 	}
 
 	t2 := NewTree()
 	t2.AddTree("/v1/:shopid", tr)
-	obj, param = t2.Match("/v1/zl/shop/123/account")
+	ctx.Input.Reset(ctx)
+	obj = t2.Match("/v1/zl/shop/123/account", ctx)
 	if obj == nil || obj.(string) != "astaxie" {
 		t.Fatal("/v1/:shopid/shop/:id/account can't get obj ")
 	}
-	if param == nil {
+	if len(ctx.Input.Params) == 0 {
 		t.Fatal("get param error")
 	}
-	if param[":id"] != "123" || param[":shopid"] != "zl" {
+	if ctx.Input.Params[":id"] != "123" || ctx.Input.Params[":shopid"] != "zl" {
 		t.Fatal("get :id :shopid param error")
 	}
-	obj, param = t2.Match("/v1/zl/shop/123/ttt_1_12.html")
+	ctx.Input.Reset(ctx)
+	obj = t2.Match("/v1/zl/shop/123/ttt_1_12.html", ctx)
 	if obj == nil || obj.(string) != "astaxie" {
 		t.Fatal("/v1/:shopid/shop/:sd/ttt_:id(.+)_:page(.+).html can't get obj ")
 	}
-	if param == nil {
+	if len(ctx.Input.Params) == 0 {
 		t.Fatal("get :shopid param error")
 	}
-	if param[":sd"] != "123" || param[":id"] != "1" || param[":page"] != "12" || param[":shopid"] != "zl" {
+	if ctx.Input.Params[":sd"] != "123" || ctx.Input.Params[":id"] != "1" || ctx.Input.Params[":page"] != "12" || ctx.Input.Params[":shopid"] != "zl" {
 		t.Fatal("get :sd :id :page :shopid param error")
 	}
 }
@@ -142,14 +151,15 @@ func TestAddTree2(t *testing.T) {
 	tr.AddRouter("/shop/:sd/ttt_:id(.+)_:page(.+).html", "astaxie")
 	t3 := NewTree()
 	t3.AddTree("/:version(v1|v2)/:prefix", tr)
-	obj, param := t3.Match("/v1/zl/shop/123/account")
+	ctx := context.NewContext()
+	obj := t3.Match("/v1/zl/shop/123/account", ctx)
 	if obj == nil || obj.(string) != "astaxie" {
 		t.Fatal("/:version(v1|v2)/:prefix/shop/:id/account can't get obj ")
 	}
-	if param == nil {
+	if len(ctx.Input.Params) == 0 {
 		t.Fatal("get param error")
 	}
-	if param[":id"] != "123" || param[":prefix"] != "zl" || param[":version"] != "v1" {
+	if ctx.Input.Params[":id"] != "123" || ctx.Input.Params[":prefix"] != "zl" || ctx.Input.Params[":version"] != "v1" {
 		t.Fatal("get :id :prefix :version param error")
 	}
 }
@@ -160,17 +170,19 @@ func TestAddTree3(t *testing.T) {
 	tr.AddRouter("/shop/:sd/account", "astaxie")
 	t3 := NewTree()
 	t3.AddTree("/table/:num", tr)
-	obj, param := t3.Match("/table/123/shop/123/account")
+	ctx := context.NewContext()
+	obj := t3.Match("/table/123/shop/123/account", ctx)
 	if obj == nil || obj.(string) != "astaxie" {
 		t.Fatal("/table/:num/shop/:sd/account can't get obj ")
 	}
-	if param == nil {
+	if len(ctx.Input.Params) == 0 {
 		t.Fatal("get param error")
 	}
-	if param[":num"] != "123" || param[":sd"] != "123" {
+	if ctx.Input.Params[":num"] != "123" || ctx.Input.Params[":sd"] != "123" {
 		t.Fatal("get :num :sd param error")
 	}
-	obj, param = t3.Match("/table/123/create")
+	ctx.Input.Reset(ctx)
+	obj = t3.Match("/table/123/create", ctx)
 	if obj == nil || obj.(string) != "astaxie" {
 		t.Fatal("/table/:num/create can't get obj ")
 	}
@@ -182,17 +194,19 @@ func TestAddTree4(t *testing.T) {
 	tr.AddRouter("/shop/:sd/:account", "astaxie")
 	t4 := NewTree()
 	t4.AddTree("/:info:int/:num/:id", tr)
-	obj, param := t4.Match("/12/123/456/shop/123/account")
+	ctx := context.NewContext()
+	obj := t4.Match("/12/123/456/shop/123/account", ctx)
 	if obj == nil || obj.(string) != "astaxie" {
 		t.Fatal("/:info:int/:num/:id/shop/:sd/:account can't get obj ")
 	}
-	if param == nil {
+	if len(ctx.Input.Params) == 0 {
 		t.Fatal("get param error")
 	}
-	if param[":info"] != "12" || param[":num"] != "123" || param[":id"] != "456" || param[":sd"] != "123" || param[":account"] != "account" {
+	if ctx.Input.Params[":info"] != "12" || ctx.Input.Params[":num"] != "123" || ctx.Input.Params[":id"] != "456" || ctx.Input.Params[":sd"] != "123" || ctx.Input.Params[":account"] != "account" {
 		t.Fatal("get :info :num :id :sd :account param error")
 	}
-	obj, param = t4.Match("/12/123/456/create")
+	ctx.Input.Reset(ctx)
+	obj = t4.Match("/12/123/456/create", ctx)
 	if obj == nil || obj.(string) != "astaxie" {
 		t.Fatal("/:info:int/:num/:id/create can't get obj ")
 	}