diff --git a/.gosimpleignore b/.gosimpleignore
deleted file mode 100644
index 84df9b95..00000000
--- a/.gosimpleignore
+++ /dev/null
@@ -1,4 +0,0 @@
-github.com/astaxie/beego/*/*:S1012
-github.com/astaxie/beego/*:S1012
-github.com/astaxie/beego/*/*:S1007
-github.com/astaxie/beego/*:S1007
\ No newline at end of file
diff --git a/.travis.yml b/.travis.yml
index 97fc317b..3a3a6f66 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -36,7 +36,7 @@ install:
   - go get github.com/casbin/casbin
   - go get github.com/elazarl/go-bindata-assetfs
   - go get github.com/OwnLocal/goes
-  - go get -u honnef.co/go/tools/cmd/gosimple
+  - go get -u honnef.co/go/tools/cmd/staticcheck
   - go get -u github.com/mdempsky/unconvert
   - go get -u github.com/gordonklaus/ineffassign
   - go get -u github.com/golang/lint/golint
@@ -55,7 +55,7 @@ after_script:
   - rm -rf ./res/var/*
 script:
   - go test -v ./...
-  - gosimple -ignore "$(cat .gosimpleignore)" $(go list ./... | grep -v /vendor/)
+  - staticcheck -show-ignored -checks "-ST1017,-U1000,-ST1005,-S1034,-S1012,-SA4006,-SA6005,-SA1019,-SA1024"
   - unconvert $(go list ./... | grep -v /vendor/)
   - ineffassign .
   - find . ! \( -path './vendor' -prune \) -type f -name '*.go' -print0 | xargs -0 gofmt -l -s
diff --git a/controller.go b/controller.go
index 4b8f9807..7859681f 100644
--- a/controller.go
+++ b/controller.go
@@ -34,7 +34,7 @@ import (
 
 var (
 	// ErrAbort custom error when user stop request handler manually.
-	ErrAbort = errors.New("User stop run")
+	ErrAbort = errors.New("user stop run")
 	// GlobalControllerRouter store comments with controller. pkgpath+controller:comments
 	GlobalControllerRouter = make(map[string][]ControllerComments)
 )
@@ -93,7 +93,6 @@ type Controller struct {
 	controllerName string
 	actionName     string
 	methodMapping  map[string]func() //method:routertree
-	gotofunc       string
 	AppController  interface{}
 
 	// template data
@@ -156,37 +155,37 @@ func (c *Controller) Finish() {}
 
 // Get adds a request function to handle GET request.
 func (c *Controller) Get() {
-	http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", 405)
+	http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", http.StatusMethodNotAllowed)
 }
 
 // Post adds a request function to handle POST request.
 func (c *Controller) Post() {
-	http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", 405)
+	http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", http.StatusMethodNotAllowed)
 }
 
 // Delete adds a request function to handle DELETE request.
 func (c *Controller) Delete() {
-	http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", 405)
+	http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", http.StatusMethodNotAllowed)
 }
 
 // Put adds a request function to handle PUT request.
 func (c *Controller) Put() {
-	http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", 405)
+	http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", http.StatusMethodNotAllowed)
 }
 
 // Head adds a request function to handle HEAD request.
 func (c *Controller) Head() {
-	http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", 405)
+	http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", http.StatusMethodNotAllowed)
 }
 
 // Patch adds a request function to handle PATCH request.
 func (c *Controller) Patch() {
-	http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", 405)
+	http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", http.StatusMethodNotAllowed)
 }
 
 // Options adds a request function to handle OPTIONS request.
 func (c *Controller) Options() {
-	http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", 405)
+	http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", http.StatusMethodNotAllowed)
 }
 
 // HandlerFunc call function with the name
diff --git a/fs.go b/fs.go
index bf7002ad..41cc6f6e 100644
--- a/fs.go
+++ b/fs.go
@@ -42,13 +42,13 @@ func walk(fs http.FileSystem, path string, info os.FileInfo, walkFn filepath.Wal
 	}
 
 	dir, err := fs.Open(path)
-	defer dir.Close()
 	if err != nil {
 		if err1 := walkFn(path, info, err); err1 != nil {
 			return err1
 		}
 		return err
 	}
+	defer dir.Close()
 	dirs, err := dir.Readdir(-1)
 	err1 := walkFn(path, info, err)
 	// If err != nil, walk can't walk into this directory.
diff --git a/namespace.go b/namespace.go
index 72f22a72..4952c9d5 100644
--- a/namespace.go
+++ b/namespace.go
@@ -207,11 +207,11 @@ func (n *Namespace) Include(cList ...ControllerInterface) *Namespace {
 func (n *Namespace) Namespace(ns ...*Namespace) *Namespace {
 	for _, ni := range ns {
 		for k, v := range ni.handlers.routers {
-			if t, ok := n.handlers.routers[k]; ok {
+			if _, ok := n.handlers.routers[k]; ok {
 				addPrefix(v, ni.prefix)
 				n.handlers.routers[k].AddTree(ni.prefix, v)
 			} else {
-				t = NewTree()
+				t := NewTree()
 				t.AddTree(ni.prefix, v)
 				addPrefix(t, ni.prefix)
 				n.handlers.routers[k] = t
@@ -236,11 +236,11 @@ func (n *Namespace) Namespace(ns ...*Namespace) *Namespace {
 func AddNamespace(nl ...*Namespace) {
 	for _, n := range nl {
 		for k, v := range n.handlers.routers {
-			if t, ok := BeeApp.Handlers.routers[k]; ok {
+			if _, ok := BeeApp.Handlers.routers[k]; ok {
 				addPrefix(v, n.prefix)
 				BeeApp.Handlers.routers[k].AddTree(n.prefix, v)
 			} else {
-				t = NewTree()
+				t := NewTree()
 				t.AddTree(n.prefix, v)
 				addPrefix(t, n.prefix)
 				BeeApp.Handlers.routers[k] = t
diff --git a/router.go b/router.go
index 997b6854..851934a8 100644
--- a/router.go
+++ b/router.go
@@ -15,6 +15,7 @@
 package beego
 
 import (
+	"errors"
 	"fmt"
 	"net/http"
 	"path"
@@ -479,8 +480,7 @@ func (p *ControllerRegister) InsertFilter(pattern string, pos int, filter Filter
 // add Filter into
 func (p *ControllerRegister) insertFilterRouter(pos int, mr *FilterRouter) (err error) {
 	if pos < BeforeStatic || pos > FinishRouter {
-		err = fmt.Errorf("can not find your filter position")
-		return
+		return errors.New("can not find your filter position")
 	}
 	p.enableFilter = true
 	p.filters[pos] = append(p.filters[pos], mr)
@@ -510,10 +510,10 @@ func (p *ControllerRegister) URLFor(endpoint string, values ...interface{}) stri
 			}
 		}
 	}
-	controllName := strings.Join(paths[:len(paths)-1], "/")
+	controllerName := strings.Join(paths[:len(paths)-1], "/")
 	methodName := paths[len(paths)-1]
 	for m, t := range p.routers {
-		ok, url := p.geturl(t, "/", controllName, methodName, params, m)
+		ok, url := p.getURL(t, "/", controllerName, methodName, params, m)
 		if ok {
 			return url
 		}
@@ -521,17 +521,17 @@ func (p *ControllerRegister) URLFor(endpoint string, values ...interface{}) stri
 	return ""
 }
 
-func (p *ControllerRegister) geturl(t *Tree, url, controllName, methodName string, params map[string]string, httpMethod string) (bool, string) {
+func (p *ControllerRegister) getURL(t *Tree, url, controllerName, methodName string, params map[string]string, httpMethod string) (bool, string) {
 	for _, subtree := range t.fixrouters {
 		u := path.Join(url, subtree.prefix)
-		ok, u := p.geturl(subtree, u, controllName, methodName, params, httpMethod)
+		ok, u := p.getURL(subtree, u, controllerName, methodName, params, httpMethod)
 		if ok {
 			return ok, u
 		}
 	}
 	if t.wildcard != nil {
 		u := path.Join(url, urlPlaceholder)
-		ok, u := p.geturl(t.wildcard, u, controllName, methodName, params, httpMethod)
+		ok, u := p.getURL(t.wildcard, u, controllerName, methodName, params, httpMethod)
 		if ok {
 			return ok, u
 		}
@@ -539,7 +539,7 @@ func (p *ControllerRegister) geturl(t *Tree, url, controllName, methodName strin
 	for _, l := range t.leaves {
 		if c, ok := l.runObject.(*ControllerInfo); ok {
 			if c.routerType == routerTypeBeego &&
-				strings.HasSuffix(path.Join(c.controllerType.PkgPath(), c.controllerType.Name()), controllName) {
+				strings.HasSuffix(path.Join(c.controllerType.PkgPath(), c.controllerType.Name()), controllerName) {
 				find := false
 				if HTTPMETHOD[strings.ToUpper(methodName)] {
 					if len(c.methods) == 0 {
@@ -578,18 +578,18 @@ func (p *ControllerRegister) geturl(t *Tree, url, controllName, methodName strin
 								}
 							}
 						}
-						canskip := false
+						canSkip := false
 						for _, v := range l.wildcards {
 							if v == ":" {
-								canskip = true
+								canSkip = true
 								continue
 							}
 							if u, ok := params[v]; ok {
 								delete(params, v)
 								url = strings.Replace(url, urlPlaceholder, u, 1)
 							} else {
-								if canskip {
-									canskip = false
+								if canSkip {
+									canSkip = false
 									continue
 								}
 								return false, ""
@@ -598,27 +598,27 @@ func (p *ControllerRegister) geturl(t *Tree, url, controllName, methodName strin
 						return true, url + toURL(params)
 					}
 					var i int
-					var startreg bool
-					regurl := ""
+					var startReg bool
+					regURL := ""
 					for _, v := range strings.Trim(l.regexps.String(), "^$") {
 						if v == '(' {
-							startreg = true
+							startReg = true
 							continue
 						} else if v == ')' {
-							startreg = false
+							startReg = false
 							if v, ok := params[l.wildcards[i]]; ok {
 								delete(params, l.wildcards[i])
-								regurl = regurl + v
+								regURL = regURL + v
 								i++
 							} else {
 								break
 							}
-						} else if !startreg {
-							regurl = string(append([]rune(regurl), v))
+						} else if !startReg {
+							regURL = string(append([]rune(regURL), v))
 						}
 					}
-					if l.regexps.MatchString(regurl) {
-						ps := strings.Split(regurl, "/")
+					if l.regexps.MatchString(regURL) {
+						ps := strings.Split(regURL, "/")
 						for _, p := range ps {
 							url = strings.Replace(url, urlPlaceholder, p, 1)
 						}
@@ -690,7 +690,7 @@ func (p *ControllerRegister) ServeHTTP(rw http.ResponseWriter, r *http.Request)
 
 	// filter wrong http method
 	if !HTTPMETHOD[r.Method] {
-		http.Error(rw, "Method Not Allowed", 405)
+		http.Error(rw, "Method Not Allowed", http.StatusMethodNotAllowed)
 		goto Admin
 	}
 
diff --git a/router_test.go b/router_test.go
index 90104427..2797b33a 100644
--- a/router_test.go
+++ b/router_test.go
@@ -71,10 +71,6 @@ func (tc *TestController) GetEmptyBody() {
 	tc.Ctx.Output.Body(res)
 }
 
-type ResStatus struct {
-	Code int
-	Msg  string
-}
 
 type JSONController struct {
 	Controller
@@ -475,7 +471,7 @@ func TestParamResetFilter(t *testing.T) {
 	// a response header of `Splat`.  The expectation here is that that Header
 	// value should match what the _request's_ router set, not the filter's.
 
-	headers := rw.HeaderMap
+	headers := rw.Result().Header
 	if len(headers["Splat"]) != 1 {
 		t.Errorf(
 			"%s: There was an error in the test. Splat param not set in Header",
@@ -660,25 +656,16 @@ 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")
diff --git a/session/redis_sentinel/sess_redis_sentinel_test.go b/session/redis_sentinel/sess_redis_sentinel_test.go
index 851fe804..fd4155c6 100644
--- a/session/redis_sentinel/sess_redis_sentinel_test.go
+++ b/session/redis_sentinel/sess_redis_sentinel_test.go
@@ -1,10 +1,11 @@
 package redis_sentinel
 
 import (
-	"github.com/astaxie/beego/session"
 	"net/http"
 	"net/http/httptest"
 	"testing"
+
+	"github.com/astaxie/beego/session"
 )
 
 func TestRedisSentinel(t *testing.T) {
@@ -15,9 +16,14 @@ func TestRedisSentinel(t *testing.T) {
 		Maxlifetime:     3600,
 		Secure:          false,
 		CookieLifeTime:  3600,
-		ProviderConfig:  "119.23.132.234:26379,100,,0,master",
+		ProviderConfig:  "127.0.0.1:6379,100,,0,master",
 	}
-	globalSessions, _ := session.NewManager("redis_sentinel", sessionConfig)
+	globalSessions, e := session.NewManager("redis_sentinel", sessionConfig)
+	if e != nil {
+		t.Log(e)
+		return
+	}
+	//todo test if e==nil
 	go globalSessions.GC()
 
 	r, _ := http.NewRequest("GET", "/", nil)
diff --git a/template.go b/template.go
index cf41cb9b..264ce931 100644
--- a/template.go
+++ b/template.go
@@ -240,7 +240,7 @@ func getTplDeep(root string, fs http.FileSystem, file string, parent string, t *
 	var fileAbsPath string
 	var rParent string
 	var err error
-	if filepath.HasPrefix(file, "../") {
+	if strings.HasPrefix(file, "../") {
 		rParent = filepath.Join(filepath.Dir(parent), file)
 		fileAbsPath = filepath.Join(root, filepath.Dir(parent), file)
 	} else {
@@ -248,10 +248,10 @@ func getTplDeep(root string, fs http.FileSystem, file string, parent string, t *
 		fileAbsPath = filepath.Join(root, file)
 	}
 	f, err := fs.Open(fileAbsPath)
-	defer f.Close()
 	if err != nil {
 		panic("can't find template file:" + file)
 	}
+	defer f.Close()
 	data, err := ioutil.ReadAll(f)
 	if err != nil {
 		return nil, [][]string{}, err
diff --git a/templatefunc.go b/templatefunc.go
index 8c1504aa..9ec2a9e8 100644
--- a/templatefunc.go
+++ b/templatefunc.go
@@ -172,7 +172,7 @@ func GetConfig(returnType, key string, defaultVal interface{}) (value interface{
 	case "DIY":
 		value, err = AppConfig.DIY(key)
 	default:
-		err = errors.New("Config keys must be of type String, Bool, Int, Int64, Float, or DIY")
+		err = errors.New("config keys must be of type String, Bool, Int, Int64, Float, or DIY")
 	}
 
 	if err != nil {
diff --git a/templatefunc_test.go b/templatefunc_test.go
index c7b8fbd3..e99ff880 100644
--- a/templatefunc_test.go
+++ b/templatefunc_test.go
@@ -197,7 +197,6 @@ func TestParseForm(t *testing.T) {
 func TestRenderForm(t *testing.T) {
 	type user struct {
 		ID      int         `form:"-"`
-		tag     string      `form:"tag"`
 		Name    interface{} `form:"username"`
 		Age     int         `form:"age,text,年龄："`
 		Sex     string