feat: improve comment and upgrade golang version 1.16 (#604)

* feat: improve action config and code comment

* feat: improve comment and upgrade golang version 1.16

* feat: improve import

officialaccount/customerservice/manager.go

@@ -228,7 +228,7 @@ func (csm *Manager) UploadHeadImg(kfAccount, fileName string) (err error) {
 	return
 }
 
-//SendTypingStatus 下发客服输入状态给用户
+// SendTypingStatus 下发客服输入状态给用户
 func (csm *Manager) SendTypingStatus(openid string, cmd TypingStatus) (err error) {
 	var accessToken string
 	accessToken, err = csm.GetAccessToken()

officialaccount/material/material.go

@@ -302,6 +302,7 @@ type reqBatchGetMaterial struct {
 }
 
 // BatchGetMaterial 批量获取永久素材
+//
 //reference:https://developers.weixin.qq.com/doc/offiaccount/Asset_Management/Get_materials_list.html
 func (material *Material) BatchGetMaterial(permanentMaterialType PermanentMaterialType, offset, count int64) (list ArticleList, err error) {
 	var accessToken string

officialaccount/message/subscribe.go

@@ -151,8 +151,8 @@ func (tpl *Subscribe) Delete(templateID string) (err error) {
 
 // PublicTemplateCategory 公众号类目
 type PublicTemplateCategory struct {
-	ID   int    `json:"id"`   //类目ID
-	Name string `json:"name"` //类目的中文名
+	ID   int    `json:"id"`   // 类目ID
+	Name string `json:"name"` // 类目的中文名
 }
 
 type resSubscribeCategoryList struct {
@@ -186,13 +186,13 @@ func (tpl *Subscribe) GetCategory() (categoryList []*PublicTemplateCategory, err
 type PublicTemplateKeyWords struct {
 	KeyWordsID int    `json:"kid"`     // 关键词 id
 	Name       string `json:"name"`    // 关键词内容
-	Example    string `json:"example"` //关键词内容对应的示例
+	Example    string `json:"example"` // 关键词内容对应的示例
 	Rule       string `json:"rule"`    // 参数类型
 }
 
 type resPublicTemplateKeyWordsList struct {
 	util.CommonError
-	KeyWordsList []*PublicTemplateKeyWords `json:"data"` //关键词列表
+	KeyWordsList []*PublicTemplateKeyWords `json:"data"` // 关键词列表
 }
 
 // GetPubTplKeyWordsByID 获取模板中的关键词
@@ -227,8 +227,8 @@ type PublicTemplateTitle struct {
 
 type resPublicTemplateTitleList struct {
 	util.CommonError
-	Count             int                    `json:"count"` //公共模板列表总数
-	TemplateTitleList []*PublicTemplateTitle `json:"data"`  //模板标题列表
+	Count             int                    `json:"count"` // 公共模板列表总数
+	TemplateTitleList []*PublicTemplateTitle `json:"data"`  // 模板标题列表
 }
 
 // GetPublicTemplateTitleList 获取类目下的公共模板

officialaccount/server/server.go

@@ -5,7 +5,7 @@ import (
 	"encoding/xml"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"reflect"
 	"runtime/debug"
@@ -13,11 +13,11 @@ import (
 	"strings"
 
 	log "github.com/sirupsen/logrus"
+	"github.com/tidwall/gjson"
 
 	"github.com/silenceper/wechat/v2/officialaccount/context"
 	"github.com/silenceper/wechat/v2/officialaccount/message"
 	"github.com/silenceper/wechat/v2/util"
-	"github.com/tidwall/gjson"
 )
 
 // Server struct
@@ -106,7 +106,7 @@ func (srv *Server) handleRequest() (reply *message.Reply, err error) {
 		srv.isSafeMode = true
 	}
 
-	//set request contentType
+	// set request contentType
 	contentType := srv.Request.Header.Get("Content-Type")
 	srv.isJSONContent = strings.Contains(contentType, "application/json")
 
@@ -162,7 +162,7 @@ func (srv *Server) getMessage() (interface{}, error) {
 			return nil, fmt.Errorf("消息解密失败, err=%v", err)
 		}
 	} else {
-		rawXMLMsgBytes, err = ioutil.ReadAll(srv.Request.Body)
+		rawXMLMsgBytes, err = io.ReadAll(srv.Request.Body)
 		if err != nil {
 			return nil, fmt.Errorf("从body中解析xml失败, err=%v", err)
 		}
@@ -193,7 +193,7 @@ func (srv *Server) parseRequestMessage(rawXMLMsgBytes []byte) (msg *message.MixM
 		err = xml.Unmarshal(rawXMLMsgBytes, msg)
 		return
 	}
-	//parse json
+	// parse json
 	err = json.Unmarshal(rawXMLMsgBytes, msg)
 	if err != nil {
 		return