添加获取微信服务器IP接口

officialaccount/basic/basic.go

@@ -1,6 +1,18 @@
 package basic
 
-import "github.com/silenceper/wechat/v2/officialaccount/context"
+import (
+	"fmt"
+
+	"github.com/silenceper/wechat/v2/officialaccount/context"
+	"github.com/silenceper/wechat/v2/util"
+)
+
+var (
+	//获取微信服务器IP地址
+	//文档：https://developers.weixin.qq.com/doc/offiaccount/Basic_Information/Get_the_WeChat_server_IP_address.html
+	getCallbackIPURL  = "https://api.weixin.qq.com/cgi-bin/getcallbackip"
+	getAPIDomainIPURL = "https://api.weixin.qq.com/cgi-bin/get_api_domain_ip"
+)
 
 //Basic struct
 type Basic struct {
@@ -13,3 +25,41 @@ func NewBasic(context *context.Context) *Basic {
 	basic.Context = context
 	return basic
 }
+
+//IPListRes 获取微信服务器IP地址 返回结果
+type IPListRes struct {
+	util.CommonError
+	IPList []string `json:"ip_list"`
+}
+
+//GetCallbackIP 获取微信callback IP地址
+func (basic *Basic) GetCallbackIP() ([]string, error) {
+	ak, err := basic.GetAccessToken()
+	if err != nil {
+		return nil, err
+	}
+	url := fmt.Sprintf("%s?access_token=%s", getCallbackIPURL, ak)
+	data, err := util.HTTPGet(url)
+	if err != nil {
+		return nil, err
+	}
+	ipListRes := &IPListRes{}
+	err = util.DecodeWithError(data, ipListRes, "GetCallbackIP")
+	return ipListRes.IPList, err
+}
+
+//GetAPIDomainIP 获取微信API接口 IP地址
+func (basic *Basic) GetAPIDomainIP() ([]string, error) {
+	ak, err := basic.GetAccessToken()
+	if err != nil {
+		return nil, err
+	}
+	url := fmt.Sprintf("%s?access_token=%s", getAPIDomainIPURL, ak)
+	data, err := util.HTTPGet(url)
+	if err != nil {
+		return nil, err
+	}
+	ipListRes := &IPListRes{}
+	err = util.DecodeWithError(data, ipListRes, "GetAPIDomainIP")
+	return ipListRes.IPList, err
+}