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添加小程序获取红包封面接口 #760
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添加小程序获取红包封面接口 #760
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,69 @@ | ||
package redpacketcover | ||
|
||
import ( | ||
"encoding/json" | ||
"fmt" | ||
"strings" | ||
|
||
"github.com/silenceper/wechat/v2/miniprogram/context" | ||
"github.com/silenceper/wechat/v2/util" | ||
) | ||
|
||
const ( | ||
getRedPacketCoverURL = "https://api.weixin.qq.com/redpacketcover/wxapp/cover_url/get_by_token?access_token=%s" | ||
) | ||
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// RedPacketCover struct | ||
type RedPacketCover struct { | ||
*context.Context | ||
} | ||
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||
// NewRedPacketCover 实例 | ||
func NewRedPacketCover(context *context.Context) *RedPacketCover { | ||
redPacketCover := new(RedPacketCover) | ||
redPacketCover.Context = context | ||
return redPacketCover | ||
} | ||
|
||
// CoverParma 小程序码参数 | ||
type CoverParma struct { | ||
// openid 可领取用户的openid | ||
OpenID string `json:"openid"` | ||
// ctoken 在红包封面平台获取发放ctoken(需要指定可以发放的appid) | ||
CToken string `json:"ctoken"` | ||
} | ||
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// fetchCode 请求并返回二维码二进制数据 | ||
func (qrCode *RedPacketCover) fetchCode(urlStr string, body interface{}) (response []byte, err error) { | ||
var accessToken string | ||
accessToken, err = qrCode.GetAccessToken() | ||
if err != nil { | ||
return | ||
} | ||
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urlStr = fmt.Sprintf(urlStr, accessToken) | ||
var contentType string | ||
response, contentType, err = util.PostJSONWithRespContentType(urlStr, body) | ||
if err != nil { | ||
return | ||
} | ||
if strings.HasPrefix(contentType, "application/json") { | ||
// 返回错误信息 | ||
var result util.CommonError | ||
err = json.Unmarshal(response, &result) | ||
if err == nil && result.ErrCode != 0 { | ||
err = fmt.Errorf("error : errcode=%v , errmsg=%v", result.ErrCode, result.ErrMsg) | ||
return nil, err | ||
} | ||
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return response, nil | ||
} | ||
err = fmt.Errorf("error : unknown response content type - %v", contentType) | ||
return nil, err | ||
} | ||
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// GetRedPacketCoverURL 获得指定用户可以领取的红包封面链接。获取参数ctoken参考微信红包封面开放平台 | ||
// 文档地址: https://developers.weixin.qq.com/miniprogram/dev/OpenApiDoc/red-packet-cover/getRedPacketCoverUrl.html | ||
func (qrCode *RedPacketCover) GetRedPacketCoverURL(coderParams CoverParma) (response []byte, err error) { | ||
return qrCode.fetchCode(getRedPacketCoverURL, coderParams) | ||
} |
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建议使用统一的错误处理
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好的,我改一下,这个从qrcode那边复制的