diff --git a/douyin_openapi.go b/douyin_openapi.go
index 40203cf..bf14d07 100644
--- a/douyin_openapi.go
+++ b/douyin_openapi.go
@@ -13,8 +13,8 @@ import (
 )
 
 const (
-	code2Session = "/api/apps/v2/jscode2session"                                     // 小程序登录地址
-	getEcpm      = "https://minigame.zijieapi.com/mgplatform/api/apps/data/get_ecpm" // 获取ECPM
+	code2Session = "https://minigame.zijieapi.com/mgplatform/api/apps/jscode2session" // 小程序登录地址
+	getEcpm      = "https://minigame.zijieapi.com/mgplatform/api/apps/data/get_ecpm"  // 获取ECPM
 )
 
 // DouYinOpenApiConfig 实例化配置
@@ -42,13 +42,8 @@ func NewDouYinOpenApi(config DouYinOpenApiConfig) *DouYinOpenApi {
 	if config.AccessToken == nil {
 		config.AccessToken = accessToken.NewDefaultAccessToken(config.AppId, config.AppSecret, config.Cache, config.IsSandbox)
 	}
-	BaseApi := "https://developer.toutiao.com"
-	if config.IsSandbox {
-		BaseApi = "https://open-sandbox.douyin.com"
-	}
 	return &DouYinOpenApi{
-		Config:  config,
-		BaseApi: BaseApi,
+		Config: config,
 	}
 }
 
@@ -57,6 +52,25 @@ func (d *DouYinOpenApi) GetApiUrl(url string) string {
 	return fmt.Sprintf("%s%s", d.BaseApi, url)
 }
 
+// Get 获取数据
+func (d *DouYinOpenApi) Get(url string, params any) (data []byte, err error) {
+	paramsStr, err := util.StructToQueryParams(params)
+	if err != nil {
+		return
+	}
+	fullURL := fmt.Sprintf("%s?%s", url, paramsStr)
+	res, err := http.Get(fullURL)
+	if err != nil {
+		return
+	}
+	defer res.Body.Close() // 关闭连接
+	data, err = io.ReadAll(res.Body)
+	if err != nil {
+		return
+	}
+	return
+}
+
 // PostJson 封装公共的请求方法
 func (d *DouYinOpenApi) PostJson(api string, params any, response any) (err error) {
 	body, err := util.PostJSON(api, params)
@@ -78,11 +92,15 @@ type Code2SessionParams struct {
 	Code          string `json:"code,omitempty"`
 }
 
-// Code2SessionResponse 小程序登录返回值
 type Code2SessionResponse struct {
-	ErrNo   int                      `json:"err_no,omitempty"`
-	ErrTips string                   `json:"err_tips,omitempty"`
-	Data    Code2SessionResponseData `json:"data,omitempty"`
+	Errcode         int    `json:"errcode"`
+	Errmsg          string `json:"errmsg"`
+	Message         string `json:"message,omitempty"`
+	AnonymousOpenid string `json:"anonymous_openid"`
+	Error           int    `json:"error"`
+	Openid          string `json:"openid"`
+	SessionKey      string `json:"session_key"`
+	Unionid         string `json:"unionid"`
 }
 
 type Code2SessionResponseData struct {
@@ -100,14 +118,15 @@ func (d *DouYinOpenApi) Code2Session(code, anonymousCode string) (code2SessionRe
 		AnonymousCode: anonymousCode,
 		Code:          code,
 	}
-	err = d.PostJson(d.GetApiUrl(code2Session), params, &code2SessionResponse)
+	b, err := d.Get(code2Session, params)
 	if err != nil {
 		return
 	}
-	if code2SessionResponse.ErrNo != 0 {
-		return code2SessionResponse, fmt.Errorf("小程序登录错误: %s %d", code2SessionResponse.ErrTips, code2SessionResponse.ErrNo)
+	err = json.Unmarshal(b, &code2SessionResponse)
+	if err != nil {
+		return
 	}
-	return
+	return code2SessionResponse, nil
 }
 
 type Record struct {
@@ -194,3 +213,8 @@ func (d *DouYinOpenApi) GetEcpm(params GetEcpmParams) (list []Record, err error)
 		params.PageNo++
 	}
 }
+
+// GetAccessToken 获取accessToken
+func (d *DouYinOpenApi) GetAccessToken() (string, error) {
+	return d.Config.AccessToken.GetAccessToken()
+}
diff --git a/util/conv.go b/util/conv.go
new file mode 100644
index 0000000..2ee7ed6
--- /dev/null
+++ b/util/conv.go
@@ -0,0 +1,54 @@
+package util
+
+import (
+	"errors"
+	"fmt"
+	"net/url"
+	"reflect"
+	"strings"
+)
+
+// StructToQueryParams 将struct转换为queryString
+func StructToQueryParams(s interface{}) (string, error) {
+	params := url.Values{}
+	val := reflect.ValueOf(s)
+
+	// 确保传入的是一个结构体指针
+	if val.Kind() == reflect.Ptr {
+		val = val.Elem()
+	}
+
+	// 确保传入的是一个结构体
+	if val.Kind() != reflect.Struct {
+		return "", fmt.Errorf("input must be a struct or struct pointer")
+	}
+	typ := val.Type()
+	for i := 0; i < val.NumField(); i++ {
+		field := val.Field(i)
+		fieldName := typ.Field(i).Name
+		if tag := typ.Field(i).Tag.Get("json"); fieldName != "" {
+			arr := strings.Split(tag, ",")
+			if len(arr) > 1 {
+				fieldName = arr[0]
+				if arr[1] == "omitempty" && field.IsZero() {
+					continue
+				}
+			}
+		}
+		// 对于基本类型，添加到 url.Values 中
+		switch field.Kind() {
+		case reflect.String:
+			params.Add(fieldName, field.String())
+		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+			params.Add(fieldName, fmt.Sprint(field.Int()))
+		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+			params.Add(fieldName, fmt.Sprint(field.Uint()))
+		case reflect.Float32, reflect.Float64:
+			params.Add(fieldName, fmt.Sprint(field.Float()))
+			// 可以根据需要添加更多的类型支持
+		default:
+			return "", errors.New("unsupport type")
+		}
+	}
+	return params.Encode(), nil
+}