diff --git a/captcha/provider.go b/captcha/provider.go
index b9635e87..fe652d42 100644
--- a/captcha/provider.go
+++ b/captcha/provider.go
@@ -21,19 +21,21 @@ type CaptchaProvider interface {
 }
 
 func GetCaptchaProvider(captchaType string) CaptchaProvider {
-	if captchaType == "Default" {
+	switch captchaType {
+	case "Default":
 		return NewDefaultCaptchaProvider()
-	} else if captchaType == "reCAPTCHA" {
+	case "reCAPTCHA":
 		return NewReCaptchaProvider()
-	} else if captchaType == "hCaptcha" {
-		return NewHCaptchaProvider()
-	} else if captchaType == "Aliyun Captcha" {
+	case "Aliyun Captcha":
 		return NewAliyunCaptchaProvider()
-	} else if captchaType == "GEETEST" {
+	case "hCaptcha":
+		return NewHCaptchaProvider()
+	case "GEETEST":
 		return NewGEETESTCaptchaProvider()
-	} else if captchaType == "Cloudflare Turnstile" {
+	case "Cloudflare Turnstile":
 		return NewCloudflareTurnstileProvider()
 	}
+
 	return nil
 }
 
diff --git a/controllers/ldap.go b/controllers/ldap.go
index d89b1ecb..b21364a9 100644
--- a/controllers/ldap.go
+++ b/controllers/ldap.go
@@ -51,7 +51,7 @@ type LdapSyncResp struct {
 func (c *ApiController) GetLdapUser() {
 	ldapServer := LdapServer{}
 	err := json.Unmarshal(c.Ctx.Input.RequestBody, &ldapServer)
-	if err != nil || util.IsStrsEmpty(ldapServer.Host, ldapServer.Admin, ldapServer.Passwd, ldapServer.BaseDn) {
+	if err != nil || util.IsStringsEmpty(ldapServer.Host, ldapServer.Admin, ldapServer.Passwd, ldapServer.BaseDn) {
 		c.ResponseError(c.T("general:Missing parameter"))
 		return
 	}
@@ -119,7 +119,7 @@ func (c *ApiController) GetLdaps() {
 func (c *ApiController) GetLdap() {
 	id := c.Input().Get("id")
 
-	if util.IsStrsEmpty(id) {
+	if util.IsStringsEmpty(id) {
 		c.ResponseError(c.T("general:Missing parameter"))
 		return
 	}
@@ -140,7 +140,7 @@ func (c *ApiController) AddLdap() {
 		return
 	}
 
-	if util.IsStrsEmpty(ldap.Owner, ldap.ServerName, ldap.Host, ldap.Admin, ldap.Passwd, ldap.BaseDn) {
+	if util.IsStringsEmpty(ldap.Owner, ldap.ServerName, ldap.Host, ldap.Admin, ldap.Passwd, ldap.BaseDn) {
 		c.ResponseError(c.T("general:Missing parameter"))
 		return
 	}
@@ -170,7 +170,7 @@ func (c *ApiController) AddLdap() {
 func (c *ApiController) UpdateLdap() {
 	var ldap object.Ldap
 	err := json.Unmarshal(c.Ctx.Input.RequestBody, &ldap)
-	if err != nil || util.IsStrsEmpty(ldap.Owner, ldap.ServerName, ldap.Host, ldap.Admin, ldap.Passwd, ldap.BaseDn) {
+	if err != nil || util.IsStringsEmpty(ldap.Owner, ldap.ServerName, ldap.Host, ldap.Admin, ldap.Passwd, ldap.BaseDn) {
 		c.ResponseError(c.T("general:Missing parameter"))
 		return
 	}
diff --git a/controllers/service.go b/controllers/service.go
index 209114d0..cd96eb57 100644
--- a/controllers/service.go
+++ b/controllers/service.go
@@ -80,7 +80,7 @@ func (c *ApiController) SendEmail() {
 		c.ResponseOk()
 	}
 
-	if util.IsStrsEmpty(emailForm.Title, emailForm.Content, emailForm.Sender) {
+	if util.IsStringsEmpty(emailForm.Title, emailForm.Content, emailForm.Sender) {
 		c.ResponseError(fmt.Sprintf(c.T("service:Empty parameters for emailForm: %v"), emailForm))
 		return
 	}
diff --git a/controllers/verification.go b/controllers/verification.go
index 26cec533..e42306f5 100644
--- a/controllers/verification.go
+++ b/controllers/verification.go
@@ -177,7 +177,7 @@ func (c *ApiController) ResetEmailOrPhone() {
 	dest := c.Ctx.Request.Form.Get("dest")
 	code := c.Ctx.Request.Form.Get("code")
 
-	if util.IsStrsEmpty(destType, dest, code) {
+	if util.IsStringsEmpty(destType, dest, code) {
 		c.ResponseError(c.T("general:Missing parameter"))
 		return
 	}
diff --git a/object/ldap.go b/object/ldap.go
index 4e2bd062..52384597 100644
--- a/object/ldap.go
+++ b/object/ldap.go
@@ -329,7 +329,7 @@ func GetLdaps(owner string) []*Ldap {
 }
 
 func GetLdap(id string) *Ldap {
-	if util.IsStrsEmpty(id) {
+	if util.IsStringsEmpty(id) {
 		return nil
 	}
 
diff --git a/object/verification.go b/object/verification.go
index 0a29b507..5745d8bf 100644
--- a/object/verification.go
+++ b/object/verification.go
@@ -122,11 +122,8 @@ func AddToVerificationRecord(user *User, provider *Provider, remoteAddr, recordT
 	record.Owner = provider.Owner
 	record.Name = util.GenerateId()
 	record.CreatedTime = util.GetCurrentTime()
-	if user != nil {
-		record.User = user.GetId()
-	}
-	record.Provider = provider.Name
 
+	record.Provider = provider.Name
 	record.Receiver = dest
 	record.Code = code
 	record.Time = time.Now().Unix()
diff --git a/util/string.go b/util/string.go
index 8d51c984..a38a80ed 100644
--- a/util/string.go
+++ b/util/string.go
@@ -145,7 +145,7 @@ func GetMd5Hash(text string) string {
 	return hex.EncodeToString(hash[:])
 }
 
-func IsStrsEmpty(strs ...string) bool {
+func IsStringsEmpty(strs ...string) bool {
 	for _, str := range strs {
 		if len(str) == 0 {
 			return true
diff --git a/util/string_test.go b/util/string_test.go
index 0bd75c66..720dbba8 100644
--- a/util/string_test.go
+++ b/util/string_test.go
@@ -183,7 +183,7 @@ func TestIsStrsEmpty(t *testing.T) {
 	}
 	for _, scenery := range scenarios {
 		t.Run(scenery.description, func(t *testing.T) {
-			actual := IsStrsEmpty(scenery.input...)
+			actual := IsStringsEmpty(scenery.input...)
 			assert.Equal(t, scenery.expected, actual, "The returned value not is expected")
 		})
 	}
diff --git a/web/src/common/SamlWidget.js b/web/src/common/SamlWidget.js
index 2aed9f53..ebfd091d 100644
--- a/web/src/common/SamlWidget.js
+++ b/web/src/common/SamlWidget.js
@@ -1,3 +1,17 @@
+// Copyright 2022 The Casdoor Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 import React from "react";
 import {Col, Row} from "antd";
 import * as Setting from "../Setting";