Changes to handle multi filters on execution pt

@@ -318,9 +318,10 @@ func DelStaticPath(url string) *App {
 
 // InsertFilter adds a FilterFunc with pattern condition and action constant.
 // The pos means action constant including
-// beego.BeforeRouter, beego.AfterStatic, beego.BeforeExec, beego.AfterExec and beego.FinishRouter.
-func InsertFilter(pattern string, pos int, filter FilterFunc) *App {
-	BeeApp.Handlers.InsertFilter(pattern, pos, filter)
+// beego.BeforeStatic, beego.BeforeRouter, beego.BeforeExec, beego.AfterExec and beego.FinishRouter.
+// The bool params is for setting the returnOnOutput value (false allows multiple filters to execute)
+func InsertFilter(pattern string, pos int, filter FilterFunc, params ...bool) *App {
+	BeeApp.Handlers.InsertFilter(pattern, pos, filter, params...)
 	return BeeApp
 }
 

@@ -20,6 +20,7 @@ type FilterRouter struct {
 	filterFunc     FilterFunc
 	tree           *Tree
 	pattern        string
+	returnOnOutput bool
 }
 
 // ValidRouter check current request is valid for this filter.

@@ -381,7 +381,9 @@ func (p *ControllerRegistor) AddAutoPrefix(prefix string, c ControllerInterface)
 }
 
 // Add a FilterFunc with pattern rule and action constant.
-func (p *ControllerRegistor) InsertFilter(pattern string, pos int, filter FilterFunc) error {
+// The bool params is for setting the returnOnOutput value (false allows multiple filters to execute)
+func (p *ControllerRegistor) InsertFilter(pattern string, pos int, filter FilterFunc, params ...bool) error {
+
 	mr := new(FilterRouter)
 	mr.tree = NewTree()
 	mr.pattern = pattern
@@ -389,6 +391,11 @@ func (p *ControllerRegistor) InsertFilter(pattern string, pos int, filter Filter
 	if !RouterCaseSensitive {
 		pattern = strings.ToLower(pattern)
 	}
+	if params == nil {
+		mr.returnOnOutput = true
+	} else {
+		mr.returnOnOutput = params[0]
+	}
 	mr.tree.AddRouter(pattern, true)
 	return p.insertFilterRouter(pos, mr)
 }
@@ -587,7 +594,7 @@ func (p *ControllerRegistor) ServeHTTP(rw http.ResponseWriter, r *http.Request)
 					if ok, p := filterR.ValidRouter(urlPath); ok {
 						context.Input.Params = p
 						filterR.filterFunc(context)
-						if w.started {
+						if filterR.returnOnOutput && w.started {
 							return true
 						}
 					}

@@ -17,6 +17,7 @@ package beego
 import (
 	"net/http"
 	"net/http/httptest"
+	"strings"
 	"testing"
 
 	"github.com/astaxie/beego/context"
@@ -385,3 +386,196 @@ func testRequest(method, path string) (*httptest.ResponseRecorder, *http.Request
 
 	return recorder, request
 }
+
+// Execution point: BeforeRouter
+// expectation: only BeforeRouter function is executed, notmatch output as router doesn't handle
+func TestFilterBeforeRouter(t *testing.T) {
+	testName := "TestFilterBeforeRouter"
+	url := "/beforeRouter"
+
+	mux := NewControllerRegister()
+	mux.InsertFilter(url, BeforeRouter, beegoBeforeRouter1)
+
+	mux.Get(url, beegoFilterFunc)
+
+	rw, r := testRequest("GET", url)
+	mux.ServeHTTP(rw, r)
+
+	if strings.Contains(rw.Body.String(), "BeforeRouter1") == false {
+		t.Errorf(testName + " BeforeRouter did not run")
+	}
+	if strings.Contains(rw.Body.String(), "hello") == true {
+		t.Errorf(testName + " BeforeRouter did not return properly")
+	}
+}
+
+// Execution point: BeforeExec
+// expectation: only BeforeExec function is executed, match as router determines route only
+func TestFilterBeforeExec(t *testing.T) {
+	testName := "TestFilterBeforeExec"
+	url := "/beforeExec"
+
+	mux := NewControllerRegister()
+	mux.InsertFilter(url, BeforeRouter, beegoFilterNoOutput)
+	mux.InsertFilter(url, BeforeExec, beegoBeforeExec1)
+
+	mux.Get(url, beegoFilterFunc)
+
+	rw, r := testRequest("GET", url)
+	mux.ServeHTTP(rw, r)
+
+	if strings.Contains(rw.Body.String(), "BeforeExec1") == false {
+		t.Errorf(testName + " BeforeExec did not run")
+	}
+	if strings.Contains(rw.Body.String(), "hello") == true {
+		t.Errorf(testName + " BeforeExec did not return properly")
+	}
+	if strings.Contains(rw.Body.String(), "BeforeRouter") == true {
+		t.Errorf(testName + " BeforeRouter ran in error")
+	}
+}
+
+// Execution point: AfterExec
+// expectation: only AfterExec function is executed, match as router handles
+func TestFilterAfterExec(t *testing.T) {
+	testName := "TestFilterAfterExec"
+	url := "/afterExec"
+
+	mux := NewControllerRegister()
+	mux.InsertFilter(url, BeforeRouter, beegoFilterNoOutput)
+	mux.InsertFilter(url, BeforeExec, beegoFilterNoOutput)
+	mux.InsertFilter(url, AfterExec, beegoAfterExec1)
+
+	mux.Get(url, beegoFilterFunc)
+
+	rw, r := testRequest("GET", url)
+	mux.ServeHTTP(rw, r)
+
+	if strings.Contains(rw.Body.String(), "AfterExec1") == false {
+		t.Errorf(testName + " AfterExec did not run")
+	}
+	if strings.Contains(rw.Body.String(), "hello") == false {
+		t.Errorf(testName + " handler did not run properly")
+	}
+	if strings.Contains(rw.Body.String(), "BeforeRouter") == true {
+		t.Errorf(testName + " BeforeRouter ran in error")
+	}
+	if strings.Contains(rw.Body.String(), "BeforeExec") == true {
+		t.Errorf(testName + " BeforeExec ran in error")
+	}
+}
+
+// Execution point: FinishRouter
+// expectation: only FinishRouter function is executed, match as router handles
+func TestFilterFinishRouter(t *testing.T) {
+	testName := "TestFilterFinishRouter"
+	url := "/finishRouter"
+
+	mux := NewControllerRegister()
+	mux.InsertFilter(url, BeforeRouter, beegoFilterNoOutput)
+	mux.InsertFilter(url, BeforeExec, beegoFilterNoOutput)
+	mux.InsertFilter(url, AfterExec, beegoFilterNoOutput)
+	mux.InsertFilter(url, FinishRouter, beegoFinishRouter1)
+
+	mux.Get(url, beegoFilterFunc)
+
+	rw, r := testRequest("GET", url)
+	mux.ServeHTTP(rw, r)
+
+	if strings.Contains(rw.Body.String(), "FinishRouter1") == true {
+		t.Errorf(testName + " FinishRouter did not run")
+	}
+	if strings.Contains(rw.Body.String(), "hello") == false {
+		t.Errorf(testName + " handler did not run properly")
+	}
+	if strings.Contains(rw.Body.String(), "AfterExec1") == true {
+		t.Errorf(testName + " AfterExec ran in error")
+	}
+	if strings.Contains(rw.Body.String(), "BeforeRouter") == true {
+		t.Errorf(testName + " BeforeRouter ran in error")
+	}
+	if strings.Contains(rw.Body.String(), "BeforeExec") == true {
+		t.Errorf(testName + " BeforeExec ran in error")
+	}
+}
+
+// Execution point: FinishRouter
+// expectation: only first FinishRouter function is executed, match as router handles
+func TestFilterFinishRouterMultiFirstOnly(t *testing.T) {
+	testName := "TestFilterFinishRouterMultiFirstOnly"
+	url := "/finishRouterMultiFirstOnly"
+
+	mux := NewControllerRegister()
+	mux.InsertFilter(url, FinishRouter, beegoFinishRouter1)
+	mux.InsertFilter(url, FinishRouter, beegoFinishRouter2)
+
+	mux.Get(url, beegoFilterFunc)
+
+	rw, r := testRequest("GET", url)
+	mux.ServeHTTP(rw, r)
+
+	if strings.Contains(rw.Body.String(), "FinishRouter1") == false {
+		t.Errorf(testName + " FinishRouter1 did not run")
+	}
+	if strings.Contains(rw.Body.String(), "hello") == false {
+		t.Errorf(testName + " handler did not run properly")
+	}
+	// not expected in body
+	if strings.Contains(rw.Body.String(), "FinishRouter2") == true {
+		t.Errorf(testName + " FinishRouter2 did run")
+	}
+}
+
+// Execution point: FinishRouter
+// expectation: both FinishRouter functions execute, match as router handles
+func TestFilterFinishRouterMulti(t *testing.T) {
+	testName := "TestFilterFinishRouterMulti"
+	url := "/finishRouterMulti"
+
+	mux := NewControllerRegister()
+	mux.InsertFilter(url, FinishRouter, beegoFinishRouter1, false)
+	mux.InsertFilter(url, FinishRouter, beegoFinishRouter2)
+
+	mux.Get(url, beegoFilterFunc)
+
+	rw, r := testRequest("GET", url)
+	mux.ServeHTTP(rw, r)
+
+	if strings.Contains(rw.Body.String(), "FinishRouter1") == false {
+		t.Errorf(testName + " FinishRouter1 did not run")
+	}
+	if strings.Contains(rw.Body.String(), "hello") == false {
+		t.Errorf(testName + " handler did not run properly")
+	}
+	if strings.Contains(rw.Body.String(), "FinishRouter2") == false {
+		t.Errorf(testName + " FinishRouter2 did not run properly")
+	}
+}
+
+func beegoFilterNoOutput(ctx *context.Context) {
+	return
+}
+func beegoBeforeRouter1(ctx *context.Context) {
+	ctx.WriteString("|BeforeRouter1")
+}
+func beegoBeforeRouter2(ctx *context.Context) {
+	ctx.WriteString("|BeforeRouter2")
+}
+func beegoBeforeExec1(ctx *context.Context) {
+	ctx.WriteString("|BeforeExec1")
+}
+func beegoBeforeExec2(ctx *context.Context) {
+	ctx.WriteString("|BeforeExec2")
+}
+func beegoAfterExec1(ctx *context.Context) {
+	ctx.WriteString("|AfterExec1")
+}
+func beegoAfterExec2(ctx *context.Context) {
+	ctx.WriteString("|AfterExec2")
+}
+func beegoFinishRouter1(ctx *context.Context) {
+	ctx.WriteString("|FinishRouter1")
+}
+func beegoFinishRouter2(ctx *context.Context) {
+	ctx.WriteString("|FinishRouter2")
+}