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README_CN.md

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+
+<div align=center><img width="220" height="220" alt="Logo was Loading Faild!" src="https://raw.githubusercontent.com/iGoogle-ink/gopay/master/logo.png"/></div>
+
+# GoPay
+
+<a href="https://www.gopay.ink" target="_blank"><img src="https://img.shields.io/badge/Author-Jerry-blue.svg"/></a>
+<a href="https://golang.org" target="_blank"><img src="https://img.shields.io/badge/Golang-1.11+-brightgreen.svg"/></a>
+<img src="https://api.travis-ci.org/iGoogle-ink/gopay.svg?branch=master"/>
+<a href="http://www.apache.org/licenses/LICENSE-2.0" target="_blank"><img src="https://img.shields.io/badge/License-Apache 2-blue.svg"/></a>
+
+## 微信Client
+
+* client := gopay.NewWeChatClient() => 初始化微信支付客户端
+* client的其他配置
+    * client.SetCountry() => 设置国家地区，默认中国国内
+
+## 微信支付API
+
+* 统一下单：client.UnifiedOrder()
+    * JSAPI - JSAPI支付（或小程序支付）
+    * NATIVE - Native支付
+    * APP - app支付
+    * MWEB - H5支付
+* 提交付款码支付：client.Micropay()
+* 查询订单：client.QueryOrder()
+* 关闭订单：client.CloseOrder()
+* 撤销订单：client.Reverse()
+* 申请退款：client.Refund()
+* 查询退款：client.QueryRefund()
+* 下载对账单：client.DownloadBill()
+* 下载资金账单：client.DownloadFundFlow()
+* 拉取订单评价数据：client.BatchQueryComment()
+
+## 微信公共API
+
+* gopay.GetMiniPaySign() => 获取微信小程序支付所需要的paySign
+* gopay.GetH5PaySign() => 获取微信内H5支付所需要的paySign
+* gopay.GetAppPaySign() => 获取APP支付所需要的paySign
+* gopay.ParseWeChatNotifyResultToBodyMap() => 解析微信支付异步通知的结果到BodyMap
+* gopay.ParseWeChatNotifyResult() => 解析微信支付异步通知的参数
+* gopay.VerifyWeChatResultSignByBodyMap() => 通过BodyMap验证微信支付异步通知的Sign值
+* gopay.VerifyWeChatResultSign() => 验证微信支付异步通知的Sign值
+* gopay.Code2Session() => 登录凭证校验：获取微信用户OpenId、UnionId、SessionKey
+* gopay.GetAccessToken() => 获取小程序全局唯一后台接口调用凭据
+* gopay.GetPaidUnionId() => 微信小程序用户支付完成后，获取该用户的 UnionId，无需用户授权
+* gopay.GetWeChatUserInfo() => 微信公众号：获取用户基本信息(UnionID机制)
+* gopay.DecryptOpenDataToStruct() => 加密数据，解密到指定结构体
+* gopay.GetOpenIdByAuthCode() => 授权码查询openid
+
+---
+
+## 支付宝Client
+
+* client := gopay.NewAliPayClient() => 初始化支付宝支付客户端
+* client的其他配置
+    * client.SetReturnUrl() => 设置返回URL
+    * client.SetNotifyUrl() => 设置异步通知URL
+    * client.SetCharset() => 设置字符编码，默认 utf-8
+    * client.SetSignType() => 设置签名类型，默认 RSA2
+    * client.SetAppAuthToken() => 设置应用授权
+
+## 支付宝支付API
+
+* 手机网站支付接口2.0（手机网站支付）：client.AliPayTradeWapPay()
+* 统一收单下单并支付页面接口（电脑网站支付）：client.AliPayTradePagePay()
+* APP支付接口2.0（APP支付）：client.AliPayTradeAppPay()
+* 统一收单交易支付接口（当面付）：client.AliPayTradePay()
+* 统一收单交易创建接口（小程序支付）：client.AliPayTradeCreate()
+* 统一收单线下交易查询：client.AliPayTradeQuery()
+* 统一收单交易关闭接口：client.AliPayTradeClose()
+* 统一收单交易撤销接口：client.AliPayTradeCancel()
+* 统一收单交易退款接口：client.AliPayTradeRefund()
+* 统一收单退款页面接口：client.AliPayTradePageRefund()
+* 统一收单交易退款查询：client.AliPayTradeFastPayRefundQuery()
+* 统一收单交易结算接口：client.AliPayTradeOrderSettle()
+* 统一收单线下交易预创建：client.AliPayTradePrecreate()
+
+## 支付宝公共API
+
+* gopay.AliPaySystemOauthToken() => 换取授权访问令牌（得到access_token，user_id等信息）
+* gopay.FormatPrivateKey() => 格式化应用私钥
+* gopay.FormatAliPayPublicKey() => 格式化支付宝公钥
+* gopay.ParseAliPayNotifyResult() => 解析并返回支付宝支付异步通知的参数
+* gopay.VerifyAliPayResultSign() => 支付宝支付异步通知的签名验证和返回参数验签后的Sign
+* gopay.DecryptAliPayOpenDataToStruct() => 支付宝小程序敏感加密数据解析到结构体
+
+# 安装
+
+```bash
+$ go get -u github.com/iGoogle-ink/gopay
+```
+
+# 文档
+
+* [GoDoc](https://godoc.org/github.com/iGoogle-ink/gopay)
+
+* 有问题+微信群。另外，仅 Fork 的同志顺手点个星呗
+
+微信：
+<img width="226" height="300" alt="Photo was Loading Faild!" src="https://raw.githubusercontent.com/iGoogle-ink/gopay/master/wechat_jerry.png"/>
+讨论群（如过期请加微信）：
+<img width="226" height="300" alt="Photo was Loading Faild!" src="https://raw.githubusercontent.com/iGoogle-ink/gopay/master/wechat_gopay.png"/>
+
+# 微信支付
+
+<font color='#0088ff'>注意：具体参数根据请求的不同而不同，请参考微信官方文档的参数说明！</font>
+
+参考文档：[微信支付文档](https://pay.weixin.qq.com/wiki/doc/api/index.html)
+
+---
+### 获取微信用户OpenId、UnionId、SessionKey
+
+```go
+userIdRsp, err := gopay.Code2Session(appID, secretKey, "")
+if err != nil {
+	fmt.Println("Error:", err)
+	return
+}
+fmt.Println("OpenID:", userIdRsp.Openid)
+fmt.Println("UnionID:", userIdRsp.Unionid)
+fmt.Println("SessionKey:", userIdRsp.SessionKey)
+```
+
+### 微信小程序支付，统一下单成功后，需要进一步获取微信小程序支付所需要的paySign
+
+* 小程序支付所需要的参数，paySign由后端计算
+    * timeStamp
+    * nonceStr
+    * package 
+    * signType
+    * paySign
+
+> 微信小程序支付官方文档：[微信小程序支付API](https://developers.weixin.qq.com/miniprogram/dev/api/open-api/payment/wx.requestPayment.html)
+```go
+timeStamp := strconv.FormatInt(time.Now().Unix(), 10)
+packages := "prepay_id=" + wxRsp.PrepayId   //此处的 wxRsp.PrepayId ,统一下单成功后得到
+//    appId：APPID
+//    nonceStr：随即字符串
+//    prepayId：统一下单成功后得到的值
+//    signType：签名类型
+//    timeStamp：时间
+//    apiKey：API秘钥值
+paySign := gopay.GetMiniPaySign(AppID, wxRsp.NonceStr, packages, gopay.SignType_MD5, timeStamp, ApiKey)
+
+//微信小程序支付需要的参数信息
+fmt.Println("paySign：", paySign)
+```
+
+### 微信内H5支付，统一下单成功后，需要进一步获取微信内H5支付所需要的paySign
+
+* 微信内H5支付所需要的参数，paySign由后端计算
+    * appId
+    * timeStamp
+    * nonceStr
+    * package 
+    * signType
+    * paySign
+> 微信内H5支付官方文档：[微信内H5支付文档](https://pay.weixin.qq.com/wiki/doc/api/external/jsapi.php?chapter=7_7&index=6)
+```go
+timeStamp := strconv.FormatInt(time.Now().Unix(), 10)
+packages := "prepay_id=" + wxRsp.PrepayId   //此处的 wxRsp.PrepayId ,统一下单成功后得到
+//    appId：APPID
+//    nonceStr：随即字符串
+//    prepayId：统一下单成功后得到的值
+//    signType：签名类型
+//    timeStamp：时间
+//    apiKey：API秘钥值
+paySign := gopay.GetH5PaySign(AppID, wxRsp.NonceStr, packages, gopay.SignType_MD5, timeStamp, ApiKey)
+
+//微信内H5支付需要的参数信息
+fmt.Println("paySign：", paySign)
+```
+
+### APP支付，统一下单成功后，需要进一步获取APP支付所需要的paySign
+
+* APP支付所需要的参数，paySign由后端计算
+    * appid
+    * partnerid
+    * noncestr
+    * prepayid
+    * package 
+    * timestamp
+    * sign
+> APP支付官方文档：[APP端调起支付的参数列表文档](https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=9_12)
+```go
+timeStamp := strconv.FormatInt(time.Now().Unix(), 10)
+//注意：signType：此处签名方式，务必与统一下单时用的签名方式一致
+//注意：package：参数因为是固定值，不需开发者再传入
+//    appId：APPID
+//    partnerid：partnerid
+//    nonceStr：随即字符串
+//    prepayId：统一下单成功后得到的值
+//    signType：此处签名方式，务必与统一下单时用的签名方式一致
+//    timeStamp：时间
+//    apiKey：API秘钥值
+paySign := gopay.GetAppPaySign(appid, partnerid, wxRsp.NonceStr, prepayid, gopay.SignType_MD5, timeStamp, apiKey)
+
+//APP支付需要的参数信息
+fmt.Println("paySign：", paySign)
+```
+
+### 1、解析并返回微信支付异步通知的参数，2、验证Sign值
+
+> 微信支付后的异步通知文档：[支付结果通知](https://pay.weixin.qq.com/wiki/doc/api/wxa/wxa_api.php?chapter=9_7&index=8)
+
+```go
+//解析微信支付异步通知的参数
+//    req：*http.Request
+//    返回参数notifyRsp：Notify请求的参数
+//    返回参数err：错误信息
+notifyRsp, err := gopay.ParseWeChatNotifyResult(c.Request())
+if err != nil {
+    fmt.Println("err:", err)
+    return
+}
+fmt.Println("notifyRsp:", notifyRsp)
+
+//验证微信支付异步通知的Sign值
+//    apiKey：API秘钥值
+//    signType：签名类型 MD5 或 HMAC-SHA256（默认请填写 MD5）
+//    notifyRsp：利用 gopay.ParseWeChatNotifyResult() 得到的结构体
+//    返回参数ok：是否验证通过
+//    返回参数sign：根据参数计算的sign值，非微信返回参数中的Sign
+ok, sign := gopay.VerifyWeChatResultSign("192006250b4c09247ec02edce69f6a2d", "MD5", notifyRsp)
+log.Println("ok:", ok)
+log.Println("sign:", sign)
+```
+或者
+```go
+//解析微信支付异步通知的结果到BodyMap
+//    req：*http.Request
+//    返回参数bm：Notify请求的参数
+//    返回参数err：错误信息
+bm, err := gopay.ParseWeChatNotifyResultToBodyMap(c.Request())
+if err != nil {
+    fmt.Println("err:", err)
+    return
+}
+
+//通过BodyMap验证微信支付异步通知的Sign值
+//    apiKey：API秘钥值
+//    signType：签名类型 MD5 或 HMAC-SHA256（默认请填写 MD5）
+//    bm：通过 gopay.ParseWeChatNotifyResult() 得到的BodyMap
+//    返回参数ok：是否验证通过
+//    返回参数sign：计算出的sign值，非微信返回参数中的Sign
+ok, sign := gopay.VerifyWeChatResultSignByBodyMap("192006250b4c09247ec02edce69f6a2d", gopay.SignType_MD5, bm)
+fmt.Println("ok:", ok)
+fmt.Println("sign:", sign)
+```
+
+### 加密数据，解密到指定结构体
+
+> 拿小程序获取手机号为例
+
+button按钮获取手机号码：[button组件文档](https://developers.weixin.qq.com/miniprogram/dev/component/button.html)
+
+微信解密算法文档：[解密算法文档](https://developers.weixin.qq.com/miniprogram/dev/framework/open-ability/signature.html)
+```go
+data := "Kf3TdPbzEmhWMuPKtlKxIWDkijhn402w1bxoHL4kLdcKr6jT1jNcIhvDJfjXmJcgDWLjmBiIGJ5acUuSvxLws3WgAkERmtTuiCG10CKLsJiR+AXVk7B2TUQzsq88YVilDz/YAN3647REE7glGmeBPfvUmdbfDzhL9BzvEiuRhABuCYyTMz4iaM8hFjbLB1caaeoOlykYAFMWC5pZi9P8uw=="
+iv := "Cds8j3VYoGvnTp1BrjXdJg=="
+sessionKey := "lyY4HPQbaOYzZdG+JcYK9w=="
+
+phone := new(gopay.WeChatUserPhone)
+err := gopay.DecryptOpenDataToStruct(data, iv, sessionKey, phone)
+if err != nil {
+	fmt.Println("err:", err)
+	return
+}
+fmt.Println("PhoneNumber:", phone.PhoneNumber)
+fmt.Println("PurePhoneNumber:", phone.PurePhoneNumber)
+fmt.Println("CountryCode:", phone.CountryCode)
+fmt.Println("Watermark:", phone.Watermark)
+```
+
+### 微信付款结果异步通知,需回复微信平台是否成功
+
+> 代码中return写法，由于本人用的 [Echo Web框架](https://github.com/labstack/echo)，有兴趣的可以尝试一下
+
+```go
+rsp := new(gopay.WeChatNotifyResponse) //回复微信的数据
+
+rsp.ReturnCode = "SUCCESS"
+rsp.ReturnMsg = "OK"
+
+return c.String(http.StatusOK, rsp.ToXmlString())
+```
+
+### 统一下单
+```go
+//初始化微信客户端
+//    appId：应用ID
+//    mchID：商户ID
+//    apiKey：API秘钥值
+//    isProd：是否是正式环境
+client := gopay.NewWeChatClient("wxd678efh567hg6787", "1230000109", "192006250b4c09247ec02edce69f6a2d", false)
+
+number := gopay.GetRandomString(32)
+fmt.Println("out_trade_no:", number)
+//初始化参数Map
+body := make(gopay.BodyMap)
+body.Set("nonce_str", gopay.GetRandomString(32))
+body.Set("body", "测试支付")
+body.Set("out_trade_no", number)
+body.Set("total_fee", 1)
+body.Set("spbill_create_ip", "127.0.0.1")
+body.Set("notify_url", "http://www.gopay.ink")
+body.Set("trade_type", gopay.TradeType_H5)
+body.Set("device_info", "WEB")
+body.Set("sign_type", gopay.SignType_MD5)
+
+//sceneInfo := make(map[string]map[string]string)
+//h5Info := make(map[string]string)
+//h5Info["type"] = "Wap"
+//h5Info["wap_url"] = "http://www.gopay.ink"
+//h5Info["wap_name"] = "H5测试支付"
+//sceneInfo["h5_info"] = h5Info
+//body.Set("scene_info", sceneInfo)
+
+body.Set("openid", OpenID)
+
+//发起下单请求
+wxRsp, err := client.UnifiedOrder(body)
+if err != nil {
+	fmt.Println("Error:", err)
+	return
+}
+fmt.Println("ReturnCode：", wxRsp.ReturnCode)
+fmt.Println("ReturnMsg：", wxRsp.ReturnMsg)
+fmt.Println("Appid：", wxRsp.Appid)
+fmt.Println("MchId：", wxRsp.MchId)
+fmt.Println("DeviceInfo：", wxRsp.DeviceInfo)
+fmt.Println("NonceStr：", wxRsp.NonceStr)
+fmt.Println("Sign：", wxRsp.Sign)
+fmt.Println("ResultCode：", wxRsp.ResultCode)
+fmt.Println("ErrCode：", wxRsp.ErrCode)
+fmt.Println("ErrCodeDes：", wxRsp.ErrCodeDes)
+fmt.Println("PrepayId：", wxRsp.PrepayId)
+fmt.Println("TradeType：", wxRsp.TradeType)
+fmt.Println("CodeUrl:", wxRsp.CodeUrl)
+fmt.Println("MwebUrl:", wxRsp.MwebUrl)
+```
+
+### 提交付款码支付
+```go
+//初始化微信客户端
+//    appId：应用ID
+//    mchID：商户ID
+//    apiKey：API秘钥值
+//    isProd：是否是正式环境
+client := gopay.NewWeChatClient("wxd678efh567hg6787", "1230000109", "192006250b4c09247ec02edce69f6a2d", false)
+
+//初始化参数Map
+body := make(gopay.BodyMap)
+body.Set("nonce_str", gopay.GetRandomString(32))
+body.Set("body", "扫用户付款码支付")
+number := gopay.GetRandomString(32)
+log.Println("Number:", number)
+body.Set("out_trade_no", number)
+body.Set("total_fee", 1)
+body.Set("spbill_create_ip", "127.0.0.1")
+body.Set("notify_url", "http://www.gopay.ink")
+body.Set("auth_code", "120061098828009406")
+body.Set("sign_type", gopay.SignType_MD5)
+
+//请求支付，成功后得到结果
+wxRsp, err := client.Micropay(body)
+if err != nil {
+	fmt.Println("Error:", err)
+}
+fmt.Println("Response:", wxRsp)
+```
+
+### 申请退款
+```go
+//初始化微信客户端
+//    appId：应用ID
+//    mchID：商户ID
+//    apiKey：API秘钥值
+//    isProd：是否是正式环境
+client := gopay.NewWeChatClient("wxd678efh567hg6787", "1230000109", "192006250b4c09247ec02edce69f6a2d", false)
+
+//初始化参数结构体
+body := make(gopay.BodyMap)
+body.Set("out_trade_no", "MfZC2segKxh0bnJSELbvKNeH3d9oWvvQ")
+body.Set("nonce_str", gopay.GetRandomString(32))
+body.Set("sign_type", gopay.SignType_MD5)
+s := gopay.GetRandomString(64)
+fmt.Println("s:", s)
+body.Set("out_refund_no", s)
+body.Set("total_fee", 101)
+body.Set("refund_fee", 101)
+
+//请求申请退款（沙箱环境下，证书路径参数可传空）
+//    body：参数Body
+//    certFilePath：cert证书路径
+//    keyFilePath：Key证书路径
+//    pkcs12FilePath：p12证书路径
+wxRsp, err := client.Refund(body, "", "", "")
+if err != nil {
+	fmt.Println("Error:", err)
+}
+fmt.Println("Response：", wxRsp)
+```
+---
+
+# 支付宝支付
+
+<font color='#0088ff'>注意：具体请求参数根据请求的不同而不同，请参考支付宝官方文档的参数说明！</font>
+
+支付宝官方文档：[官方文档](https://docs.open.alipay.com/catalog)
+
+支付宝RSA秘钥生成文档：[生成 RSA 密钥](https://docs.open.alipay.com/291/105971/)
+
+支付宝在线调试：[在线调试地址](https://openhome.alipay.com/platform/demoManage.htm)
+
+沙箱环境使用说明：[文档地址](https://docs.open.alipay.com/200/105311)
+
+---
+
+### 换取授权访问令牌（得到access_token，user_id等信息）
+
+> 支付宝换取授权访问令牌文档：[换取授权访问令牌](https://docs.open.alipay.com/api_9/alipay.system.oauth.token)
+
+```go
+privateKey := "MIIEogIBAAKCAQEAy+CRzKw4krA2RzCDTqg5KJg92XkOY0RN3pW4sYInPqnGtHV7YDHu5nMuxY6un+dLfo91OFOEg+RI+WTOPoM4xJtsOaJwQ1lpjycoeLq1OyetGW5Q8wO+iLWJASaMQM/t/aXR/JHaguycJyqlHSlxANvKKs/tOHx9AhW3LqumaCwz71CDF/+70scYuZG/7wxSjmrbRBswxd1Sz9KHdcdjqT8pmieyPqnM24EKBexHDmQ0ySXvLJJy6eu1dJsPIz+ivX6HEfDXmSmJ71AZVqZyCI1MhK813R5E7XCv5NOtskTe3y8uiIhgGpZSdB77DOyPLcmVayzFVLAQ3AOBDmsY6wIDAQABAoIBAHjsNq31zAw9FcR9orQJlPVd7vlJEt6Pybvmg8hNESfanO+16rpwg2kOEkS8zxgqoJ1tSzJgXu23fgzl3Go5fHcoVDWPAhUAOFre9+M7onh2nPXDd6Hbq6v8OEmFapSaf2b9biHnBHq5Chk08v/r74l501w3PVVOiPqulJrK1oVb+0/YmCvVFpGatBcNaefKUEcA+vekWPL7Yl46k6XeUvRfTwomCD6jpYLUhsAKqZiQJhMGoaLglZvkokQMF/4G78K7FbbVLMM1+JDh8zJ/DDVdY2vHREUcCGhl4mCVQtkzIbpxG++vFg7/g/fDI+PquG22hFILTDdtt2g2fV/4wmkCgYEA6goRQYSiM03y8Tt/M4u1Mm7OWYCksqAsU7rzQllHekIN3WjD41Xrjv6uklsX3sTG1syo7Jr9PGE1xQgjDEIyO8h/3lDQyLyycYnyUPGNNMX8ZjmGwcM51DQ/QfIrY/CXjnnW+MVpmNclAva3L33KXCWjw20VsROV1EA8LCL94BUCgYEA3wH4ANpzo7NqXf+2WlPPMuyRrF0QPIRGlFBNtaKFy0mvoclkREPmK7+N4NIGtMf5JNODS5HkFRgmU4YNdupA2I8lIYpD+TsIobZxGUKUkYzRZYZ1m1ttL69YYvCVz9Xosw/VoQ+RrW0scS5yUKqFMIUOV2R/Imi//c5TdKx6VP8CgYAnJ1ADugC4vI2sNdvt7618pnT3HEJxb8J6r4gKzYzbszlGlURQQAuMfKcP7RVtO1ZYkRyhmLxM4aZxNA9I+boVrlFWDAchzg+8VuunBwIslgLHx0/4EoUWLzd1/OGtco6oU1HXhI9J9pRGjqfO1iiIifN/ujwqx7AFNknayG/YkQKBgD6yNgA/ak12rovYzXKdp14Axn+39k2dPp6J6R8MnyLlB3yruwW6NSbNhtzTD1GZ+wCQepQvYvlPPc8zm+t3tl1r+Rtx3ORf5XBZc3iPkGdPOLubTssrrAnA+U9vph61W+OjqwLJ9sHUNK9pSHhHSIS4k6ycM2YAHyIC9NGTgB0PAoGAJjwd1DgMaQldtWnuXjvohPOo8cQudxXYcs6zVRbx6vtjKe2v7e+eK1SSVrR5qFV9AqxDfGwq8THenRa0LC3vNNplqostuehLhkWCKE7Y75vXMR7N6KU1kdoVWgN4BhXSwuRxmHMQfSY7q3HG3rDGz7mzXo1FVMr/uE4iDGm0IXY="
+//换取授权访问令牌（默认使用utf-8，RSA2）
+//    appId：应用ID
+//    privateKey：应用私钥
+//    grantType：值为 authorization_code 时，代表用code换取；值为 refresh_token 时，代表用refresh_token换取，传空默认code换取
+//    codeOrToken：支付宝授权码或refresh_token
+rsp, err := gopay.AlipaySystemOauthToken("2016091200494382", privateKey, "authorization_code", "06e8961891d647c0ac99bb1cebe7SE69")
+if err != nil {
+	fmt.Println("gopay.AlipaySystemOauthToken:",err)
+	return
+}
+fmt.Println("rsp:", *rsp)
+```
+
+### 支付宝（小程序）敏感加密数据解析
+
+> 拿小程序获取手机号为例
+
+获取用户手机号文档：[获取用户手机号](https://docs.alipay.com/mini/api/getphonenumber)
+
+敏感信息加解密官方文档：[敏感信息加解密方法](https://docs.alipay.com/mini/introduce/aes)
+```go
+data := "MkvuiIZsGOC8S038cu/JIpoRKnF+ZFjoIRGf5d/K4+ctYjCtb/eEkwgrdB5TeH/93bxff1Ylb+SE+UGStlpvcg=="
+key := "TDftre9FpItr46e9BVNJcw=="
+rsp := new(gopay.PhoneNumberResponse)
+err := gopay.DecryptAliPayOpenDataToStruct(data, key, rsp)
+if err != nil {
+	fmt.Println("err:", err)
+	return
+}
+fmt.Println("rsp.Code:", rsp.Code)
+fmt.Println("rsp.Msg:", rsp.Msg)
+fmt.Println("rsp.SubCode:", rsp.SubCode)
+fmt.Println("rsp.SubMsg:", rsp.SubMsg)
+fmt.Println("rsp.Mobile:", rsp.Mobile)
+```
+
+### 1、支付结果异步通知参数解析；2、验签操作
+
+> 支付宝支付后的异步通知验签文档：[支付结果通知](https://docs.open.alipay.com/200/106120)
+
+```go
+//解析支付完成后的异步通知参数信息
+//此处 c.Request() 为 *http.Request
+notifyRsp, err := gopay.ParseAliPayNotifyResult(c.Request())
+if err != nil {
+    fmt.Println("gopay.ParseAliPayNotifyResult:", err)
+    return
+}
+fmt.Println("notifyRsp:", notifyRsp)
+
+aliPayPublicKey := "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1wn1sU/8Q0rYLlZ6sq3enrPZw2ptp6FecHR2bBFLjJ+sKzepROd0bKddgj+Mr1ffr3Ej78mLdWV8IzLfpXUi945DkrQcOUWLY0MHhYVG2jSs/qzFfpzmtut2Cl2TozYpE84zom9ei06u2AXLMBkU6VpznZl+R4qIgnUfByt3Ix5b3h4Cl6gzXMAB1hJrrrCkq+WvWb3Fy0vmk/DUbJEz8i8mQPff2gsHBE1nMPvHVAMw1GMk9ImB4PxucVek4ZbUzVqxZXphaAgUXFK2FSFU+Q+q1SPvHbUsjtIyL+cLA6H/6ybFF9Ffp27Y14AHPw29+243/SpMisbGcj2KD+evBwIDAQAB"
+//验签操作
+//    aliPayPublicKey：支付宝公钥
+//    notifyRsp：利用 gopay.ParseAliPayNotifyResult() 得到的结构体
+//    返回参数ok：是否验证通过
+//    返回参数err：错误信息
+ok, err := gopay.VerifyAliPayResultSign(aliPayPublicKey, notifyRsp)
+if err != nil {
+	log.Println("gopay.VerifyAliPayResultSign:", err)
+	return
+}
+fmt.Println("ok:", ok)
+```
+
+### 支付宝付款结果异步通知,需回复支付宝平台是否成功
+
+* 程序执行完后必须打印输出“success”（不包含引号）。如果商户反馈给支付宝的字符不是success这7个字符，支付宝服务器会不断重发通知，直到超过24小时22分钟。一般情况下，25小时以内完成8次通知（通知的间隔频率一般是：4m,10m,10m,1h,2h,6h,15h）
+
+> 代码中return写法，由于本人用的 [Echo Web框架](https://github.com/labstack/echo)，有兴趣的可以尝试一下
+
+```go
+return c.String(http.StatusOK, "success")
+```
+
+### 手机网站支付
+
+* 手机网站支付是通过服务端获取支付URL后，然后返回给客户端，请求URL地址即可打开支付页面
+
+> 文档说明：[手机网站支付-请求参数说明](https://docs.open.alipay.com/203/107090/) 
+
+> 文档说明：[手机网站支付接口2.0](https://docs.open.alipay.com/api_1/alipay.trade.wap.pay/) 
+
+```go
+privateKey := "MIIEogIBAAKCAQEAy+CRzKw4krA2RzCDTqg5KJg92XkOY0RN3pW4sYInPqnGtHV7YDHu5nMuxY6un+dLfo91OFOEg+RI+WTOPoM4xJtsOaJwQ1lpjycoeLq1OyetGW5Q8wO+iLWJASaMQM/t/aXR/JHaguycJyqlHSlxANvKKs/tOHx9AhW3LqumaCwz71CDF/+70scYuZG/7wxSjmrbRBswxd1Sz9KHdcdjqT8pmieyPqnM24EKBexHDmQ0ySXvLJJy6eu1dJsPIz+ivX6HEfDXmSmJ71AZVqZyCI1MhK813R5E7XCv5NOtskTe3y8uiIhgGpZSdB77DOyPLcmVayzFVLAQ3AOBDmsY6wIDAQABAoIBAHjsNq31zAw9FcR9orQJlPVd7vlJEt6Pybvmg8hNESfanO+16rpwg2kOEkS8zxgqoJ1tSzJgXu23fgzl3Go5fHcoVDWPAhUAOFre9+M7onh2nPXDd6Hbq6v8OEmFapSaf2b9biHnBHq5Chk08v/r74l501w3PVVOiPqulJrK1oVb+0/YmCvVFpGatBcNaefKUEcA+vekWPL7Yl46k6XeUvRfTwomCD6jpYLUhsAKqZiQJhMGoaLglZvkokQMF/4G78K7FbbVLMM1+JDh8zJ/DDVdY2vHREUcCGhl4mCVQtkzIbpxG++vFg7/g/fDI+PquG22hFILTDdtt2g2fV/4wmkCgYEA6goRQYSiM03y8Tt/M4u1Mm7OWYCksqAsU7rzQllHekIN3WjD41Xrjv6uklsX3sTG1syo7Jr9PGE1xQgjDEIyO8h/3lDQyLyycYnyUPGNNMX8ZjmGwcM51DQ/QfIrY/CXjnnW+MVpmNclAva3L33KXCWjw20VsROV1EA8LCL94BUCgYEA3wH4ANpzo7NqXf+2WlPPMuyRrF0QPIRGlFBNtaKFy0mvoclkREPmK7+N4NIGtMf5JNODS5HkFRgmU4YNdupA2I8lIYpD+TsIobZxGUKUkYzRZYZ1m1ttL69YYvCVz9Xosw/VoQ+RrW0scS5yUKqFMIUOV2R/Imi//c5TdKx6VP8CgYAnJ1ADugC4vI2sNdvt7618pnT3HEJxb8J6r4gKzYzbszlGlURQQAuMfKcP7RVtO1ZYkRyhmLxM4aZxNA9I+boVrlFWDAchzg+8VuunBwIslgLHx0/4EoUWLzd1/OGtco6oU1HXhI9J9pRGjqfO1iiIifN/ujwqx7AFNknayG/YkQKBgD6yNgA/ak12rovYzXKdp14Axn+39k2dPp6J6R8MnyLlB3yruwW6NSbNhtzTD1GZ+wCQepQvYvlPPc8zm+t3tl1r+Rtx3ORf5XBZc3iPkGdPOLubTssrrAnA+U9vph61W+OjqwLJ9sHUNK9pSHhHSIS4k6ycM2YAHyIC9NGTgB0PAoGAJjwd1DgMaQldtWnuXjvohPOo8cQudxXYcs6zVRbx6vtjKe2v7e+eK1SSVrR5qFV9AqxDfGwq8THenRa0LC3vNNplqostuehLhkWCKE7Y75vXMR7N6KU1kdoVWgN4BhXSwuRxmHMQfSY7q3HG3rDGz7mzXo1FVMr/uE4iDGm0IXY="
+//初始化支付宝客户端
+//    appId：应用ID
+//    privateKey：应用秘钥
+//    isProd：是否是正式环境
+client := gopay.NewAliPayClient("2016091200494382", privateKey, false)
+//配置公共参数
+client.SetCharset("utf-8").
+	SetSignType("RSA2").
+	//SetAppAuthToken("").
+	//SetReturnUrl("https://www.gopay.ink").
+	SetNotifyUrl("https://www.gopay.ink")
+//请求参数
+body := make(gopay.BodyMap)
+body.Set("subject", "测试支付")
+body.Set("out_trade_no", "GYWX201901301040355706100409")
+body.Set("quit_url", "https://www.gopay.ink")
+body.Set("total_amount", "10.00")
+body.Set("product_code", "QUICK_WAP_WAY")
+//手机网站支付请求
+payUrl, err := client.AliPayTradeWapPay(body)
+if err != nil {
+	log.Println("err:", err)
+	return
+}
+fmt.Println("payUrl:", payUrl)
+```
+
+### APP支付
+
+* APP支付是通过服务端获取支付参数后，然后通过Android/iOS客户端的SDK调用支付功能
+
+> 文档说明：[APP支付-请求参数说明](https://docs.open.alipay.com/204/105465/) 
+
+> 文档说明：[APP支付接口2.0](https://docs.open.alipay.com/api_1/alipay.trade.app.pay/) 
+
+```go
+privateKey := "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"
+//初始化支付宝客户端
+//    appId：应用ID
+//    privateKey：应用秘钥
+//    isProd：是否是正式环境
+client := gopay.NewAliPayClient("2016091200494382", privateKey, false)
+//配置公共参数
+client.SetCharset("utf-8").
+	SetSignType("RSA2").
+	//SetAppAuthToken("").
+	//SetReturnUrl("https://www.gopay.ink").
+	SetNotifyUrl("https://www.gopay.ink")
+//请求参数
+body := make(gopay.BodyMap)
+body.Set("subject", "测试APP支付")
+body.Set("out_trade_no", "GYWX201901301040355706100411")
+body.Set("total_amount", "1.00")
+//手机APP支付参数请求
+payParam, err := client.AliPayTradeAppPay(body)
+if err != nil {
+	fmt.Println("err:", err)
+	return
+}
+fmt.Println("payParam:", payParam)
+```
+
+### 电脑网站支付
+
+* 电脑网站支付是通过服务端获取支付URL后，然后返回给客户端，请求URL地址即可打开支付页面
+
+> 文档说明：[电脑网站支付](https://docs.open.alipay.com/270) 
+
+> 文档说明：[统一收单下单并支付页面接口](https://docs.open.alipay.com/api_1/alipay.trade.page.pay) 
+
+```go
+privateKey := "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"
+//初始化支付宝客户端
+//    appId：应用ID
+//    privateKey：应用秘钥
+//    isProd：是否是正式环境
+client := gopay.NewAliPayClient("2016091200494382", privateKey, false)
+//配置公共参数
+client.SetCharset("utf-8").
+	SetSignType("RSA2").
+	//SetAppAuthToken("").
+	//SetReturnUrl("https://www.gopay.ink").
+	SetNotifyUrl("https://www.gopay.ink")
+//请求参数
+body := make(gopay.BodyMap)
+body.Set("subject", "网站测试支付")
+body.Set("out_trade_no", "GYWX201901301040355706100418")
+body.Set("total_amount", "88.88")
+body.Set("product_code", "FAST_INSTANT_TRADE_PAY")
+
+//电脑网站支付请求
+payUrl, err := client.AliPayTradePagePay(body)
+if err != nil {
+	fmt.Println("err:", err)
+	return
+}
+fmt.Println("payUrl:", payUrl)
+```
+
+### 当面付-条码支付
+
+* 商家使用扫码枪等条码识别设备扫描用户支付宝钱包上的条码/二维码，完成收款。
+
+> 文档说明：[当面付-条码支付](https://docs.open.alipay.com/194) 
+
+> 文档说明：[统一收单交易支付接口](https://docs.open.alipay.com/api_1/alipay.trade.pay) 
+
+```go
+privateKey := "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"
+//初始化支付宝客户端
+//    appId：应用ID
+//    privateKey：应用秘钥
+//    isProd：是否是正式环境
+client := gopay.NewAliPayClient("2016091200494382", privateKey, false)
+//配置公共参数
+client.SetCharset("utf-8").
+	SetSignType("RSA2").
+	//SetAppAuthToken("").
+	//SetReturnUrl("https://www.gopay.ink").
+	SetNotifyUrl("https://www.gopay.ink")
+//请求参数
+body := make(gopay.BodyMap)
+body.Set("subject", "条码支付")
+body.Set("scene", "bar_code")
+body.Set("auth_code", "285860185283886370")
+body.Set("out_trade_no", "GYWX201901301040355706100456")
+body.Set("total_amount", "10.00")
+body.Set("timeout_express", "2m")
+
+//当面付-条码支付
+aliRsp, err := client.AliPayTradePay(body)
+if err != nil {
+	fmt.Println("err:", err)
+	return
+}
+fmt.Println("aliRsp:", *aliRsp)
+```
+
+### 统一收单交易退款接口
+
+* 交易订单退款接口，具体条件请看官方文档介绍
+
+> 文档说明：[统一收单交易退款接口](https://docs.open.alipay.com/api_1/alipay.trade.refund) 
+
+```go
+privateKey := "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"
+//初始化支付宝客户端
+//    appId：应用ID
+//    privateKey：应用秘钥
+//    isProd：是否是正式环境
+client := gopay.NewAliPayClient("2016091200494382", privateKey, false)
+//配置公共参数
+client.SetCharset("utf-8").
+	SetSignType("RSA2")
+//请求参数
+body := make(gopay.BodyMap)
+body.Set("out_trade_no", "GZ201907261437329516")
+body.Set("refund_amount", "100.00")
+body.Set("refund_reason", "测试支付退款")
+//发起退款请求
+aliRsp, err := client.AliPayTradeRefund(body)
+if err != nil {
+	fmt.Println("err:", err)
+	return
+}
+fmt.Println("aliRsp:", *aliRsp)
+```
+
+## License
+```
+Copyright 2019 Jerry
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+```