小程序页面
<button class='pay_fixed_right' formType="submit1" bindtap='pay' style="background:{{color}}">去支付</button>
小程序js 中间**就是需要替换的域名，openid需要自己小程序的
pay: function (e) {
var openId = "o7Rrj5M-METpuTV8mNxv6_6gn1sw";
var tradeNo = "85511613375";
var amount = "0.01";
var body = "餐费";
wx.request({
url: 'http://**/app/pay',
method: 'POST',
data: {
openId: openId,
tradeNo: tradeNo,
tradeType: 'JSAPI',
amount: amount,
body: body,
}, //参数为键值对字符串
header: {
//设置参数内容类型为x-www-form-urlencoded
"Accept": "*/*", 'Content-Type': 'application/json'
},
success: function (e) {
var data = e.data.wxPayResponse;
wx.requestPayment({
'timeStamp': data.timeStamp.toString(),
'nonceStr': data.nonceStr,
'package': data.package_wx,
'signType': 'MD5',
'paySign': data.sign,
success: function (event) {
// success
wx.showToast({
title: '支付成功',
icon: 'success',
duration: 2000
});
//处理 业务逻辑
},
fail: function (error) {
// fail
console.log("支付失败")
wx.showToast({
title: '支付失败',
icon: 'none',
duration: 2000
});
}
})
}
})
}
代码删减了些，不过问题不大
开始服务端了
AppWxPayController.java
@Autowired
private WxPayService wxPayService;
private Logger logger = LoggerFactory.getLogger(getClass());
@PostMapping("pay")
@ApiOperation("微信支付")
public R pay(@RequestBody PayParam payParam){
WxPayEntity wxPayEntity=wxPayService.pay(payParam);//请求订单统一接口
return R.ok().put("wxPayResponse", wxPayEntity);
}
@PostMapping("payNotifyUrl")
@ApiOperation("微信支付回调")
public String payNotifyUrl(HttpServletRequest request){
String xmlString = WxPayUtils.getXmlString(request);
logger.info("----微信支付回调接收到的数据如下：---" + xmlString);
return wxPayService.payAsyncNotify(xmlString);
}
服务端支付接口和回调
/**
* 调用微信支付-统一下单接口
* @param payParam 用户传入的订单信息
* @return
*/
WxPayEntity pay(PayParam payParam);
WxPayService.java
service下面是实现类
WxPayServiceImpl.java 统一下单+回调
private Logger logger = LoggerFactory.getLogger(getClass());
/* (non-Javadoc)
* <p>Title: pay</p>
* <p>Description: 统一下单接口</p>
* @param payParam
* @return
* @see com.alpha.modules.wxpay.service.WxPayService#pay(com.alpha.modules.wxpay.form.PayParam)
*/
public WxPayEntity pay(PayParam payParam) {
WxPayUnifiedorderResponse response = null;
try {
//组织统一下单接口请求参数
WxPayUnifiedorderRequest request = new WxPayUnifiedorderRequest();
request.setAppid(WxConfigure.getAppID());
request.setBody(payParam.getBody());
request.setMchId(WxConfigure.getMch_id());
request.setNonceStr(WxPayUtils.getRandomStr(32));
request.setNotifyUrl(WxConfigure.getPayNotifyUrl());
request.setOpenid(payParam.getOpenId());
request.setOutTradeNo(payParam.getTradeNo());
request.setSpbillCreateIp(WxPayUtils.getIpAddr());//获取ip
request.setTotalFee(WxPayUtils.yuanToFen(payParam.getAmount()));
request.setTradeType(payParam.getTradeType());
request.setSign(WxPayUtils.signByMD5(request, WxConfigure.getKey()));
Retrofit retrofit = new Retrofit.Builder()
.baseUrl("https://api.mch.weixin.qq.com")
.addConverterFactory(SimpleXmlConverterFactory.create())
.build();
String xml = WxPayUtils.objToXML(request);
RequestBody requestBody = RequestBody.create(MediaType.parse("application/xml; charset=utf-8"), xml);
Call<WxPayUnifiedorderResponse> call = retrofit.create(WxPayApi.class).UNIFIEDORDER_RESPONSE_CALL(requestBody);
Response<WxPayUnifiedorderResponse> retrofitResponse = call.execute();
response = retrofitResponse.body();
if(!response.getReturnCode().equals("SUCCESS")) {
throw new RuntimeException("【微信统一支付】发起支付, returnCode != SUCCESS, returnMsg = " + response.getReturnMsg());
}
if (!response.getResultCode().equals("SUCCESS")) {
throw new RuntimeException("【微信统一支付】发起支付, resultCode != SUCCESS, err_code = " + response.getErrCode() + " err_code_des=" + response.getErrCodeDes());
}
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return buildWxPayResponse(response);
}
private WxPayEntity buildWxPayResponse(WxPayUnifiedorderResponse wxPayUnifiedorderResponse) {
String timeStamps = String.valueOf(System.currentTimeMillis() / 1000L); //微信接口时间戳为10位字符串
String package_wx = "prepay_id=" + wxPayUnifiedorderResponse.getPrepayId(); //返回前台package字段值为
WxPayEntity wxPayEntity = new WxPayEntity();
try {
wxPayEntity.setTimeStamp(timeStamps);
wxPayEntity.setNonceStr(WxPayUtils.getRandomStr(32));
wxPayEntity.setPackage_wx(package_wx);
wxPayEntity.setAppid(WxConfigure.getAppID());
wxPayEntity.setSignType("MD5");
Map<String, String> wxResMap = buildWxResMap(wxPayEntity);
wxPayEntity.setSign(WxPayUtils.signByMD5(wxResMap, WxConfigure.getKey()));
} catch (Exception e) {
e.printStackTrace();
}
return wxPayEntity;
}
/**
* 构造返回小程序签名参数（小程序支付二次签名）
* @param wxPayEntity
* @return
*/
private Map<String,String> buildWxResMap(WxPayEntity wxPayEntity) {
Map<String, String> wxResMap = new HashMap<>();
wxResMap.put("appId", wxPayEntity.getAppid());
wxResMap.put("nonceStr", wxPayEntity.getNonceStr());
wxResMap.put("package", wxPayEntity.getPackage_wx());
wxResMap.put("signType", "MD5");
wxResMap.put("timeStamp", wxPayEntity.getTimeStamp());
return wxResMap;
}
/* (non-Javadoc)
* <p>Title: payAsyncNotify</p>
* <p>Description: 支付回调接口</p>
* @param notifyData
* @return
* @see com.alpha.modules.wxpay.service.WxPayService#payAsyncNotify(java.lang.String)
*/
public String payAsyncNotify(String notifyData) {
WxPayNotifyResponse wxPayNotifyResponse = (WxPayNotifyResponse) WxPayUtils.xmlToObj(notifyData, WxPayNotifyResponse.class);
try {
String sign= WxPayUtils.signByMD5(wxPayNotifyResponse, WxConfigure.getKey());
if (sign.equals(wxPayNotifyResponse.getSign())) {
throw new RuntimeException("【微信支付异步通知】签名验证失败");
}
if(!wxPayNotifyResponse.getReturnCode().equals("SUCCESS")) {
throw new RuntimeException("【微信支付异步通知】发起支付, returnCode != SUCCESS, returnMsg = " + wxPayNotifyResponse.getReturnMsg());
}
//该订单已支付直接返回
if (!wxPayNotifyResponse.getResultCode().equals("SUCCESS")
&& wxPayNotifyResponse.getErrCode().equals("ORDERPAID")) {
logger.info("【微信付款】付款成功通知:"+wxPayNotifyResponse.getOutTradeNo()+"付款成功");
return WxPayUtils.returnXML(wxPayNotifyResponse.getReturnCode());
}
if (!wxPayNotifyResponse.getResultCode().equals("SUCCESS")) {
throw new RuntimeException("【微信支付异步通知】发起支付, resultCode != SUCCESS, err_code = " + wxPayNotifyResponse.getErrCode() + " err_code_des=" + wxPayNotifyResponse.getErrCodeDes());
}
logger.info("【微信付款】付款成功通知:"+wxPayNotifyResponse.getOutTradeNo()+"付款成功");
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return WxPayUtils.returnXML(wxPayNotifyResponse.getReturnCode());
}
在贴上调用微信接口的api
WxPayApi.java
/**
* 统一下单接口
* @param body
* @return
*/
@POST("pay/unifiedorder")
Call<WxPayUnifiedorderResponse> UNIFIEDORDER_RESPONSE_CALL(@Body RequestBody body);
这里微信支付的代码就全部完结了。如若遇到问题可以加我q:850728581,有空会给解答或者留邮箱发源码
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