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send.go
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send.go
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package mpwx
import (
"bytes"
"encoding/json"
"fmt"
"net/http"
"net/url"
"gitee.com/we-mid/go/util"
)
const sendUrl = "https://api.weixin.qq.com/cgi-bin/message/template/send"
type rawValueItem struct {
Value string `json:"value"`
}
type rawValueMap map[string]rawValueItem
type sendReq struct {
ToUser string `json:"touser"`
TemplateId string `json:"template_id"`
Data rawValueMap `json:"data"`
}
type sendRes struct {
ErrCode int `json:"errcode"`
}
// 基础消息能力 /模板消息接口
// https://developers.weixin.qq.com/doc/offiaccount/Message_Management/Template_Message_Interface.html
func (c *MpwxClient) SendTemplateMessage(touser, template_id string, valueMap map[string]string) error {
// 设置url+query
var ak string
if err := c.accessToken(&ak); err != nil {
return err
}
query := url.Values{}
query.Set("access_token", ak)
u, err := util.URLParseQueryPatch(sendUrl, query)
if err != nil {
return err
}
// 设置请求体
var reqBody bytes.Buffer
rMap := make(rawValueMap)
for k, v := range valueMap {
rMap[k] = rawValueItem{v}
}
req := sendReq{touser, template_id, rMap}
if err := json.NewEncoder(&reqBody).Encode(req); err != nil {
return err
}
// 创建一个请求
r, err := http.NewRequest("POST", u.String(), &reqBody)
if err != nil {
return fmt.Errorf("Error creating request: %w", err)
}
// 设置请求头
r.Header.Set("Content-Type", "application/json")
// 发送请求
client := &http.Client{}
resp, err := client.Do(r)
if err != nil {
return fmt.Errorf("Error sending request: %w", err)
}
defer resp.Body.Close()
// 读取响应
var res sendRes
if err := json.NewDecoder(resp.Body).Decode(&res); err != nil {
return fmt.Errorf("Error reading response: %w", err)
}
// Valid values of errCode
// https://developers.weixin.qq.com/miniprogram/en/dev/api-backend/open-api/template-message/templateMessage.send.html
// Interface error code
// https://developers.weixin.qq.com/miniprogram/dev/platform-capabilities/en/industry/express/express_open_msg.html#Interface%20error%20code
// 40003: Error in openid parameter
if res.ErrCode != 0 {
return fmt.Errorf("sendRes=%+v", res)
}
return nil
}