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多應用多平臺支付模塊-微信V2JsApi支付

發布時間：2023-07-02 23:24:02 作者：網友整理

此前，已設計過多應用多平模塊的基礎開篇。

本篇，準備對接微信V2JsApi支付基礎模塊，并基于此模塊實現具體的業務功能邏輯。

開發思路如下

 

微信下單網絡請求配置

定義微信統一下單網絡請求配置，提供實現類進行調用獲取下單數據。

package com.threeox.biz.order.config;

import com.threeox.biz.order.entity.wx.WxOrderInfo;
import com.threeox.drivenlibrary.engine.annotation.base.ParamConfig;
import com.threeox.drivenlibrary.engine.annotation.request.NETWorkRequestConfig;
import com.threeox.drivenlibrary.engine.annotation.request.RequestConfig;
import com.threeox.drivenlibrary.engine.annotation.scan.RequestScanConfig;
import com.threeox.drivenlibrary.enums.dictionary.DataType;
import com.threeox.drivenlibrary.enums.dictionary.RequestMethod;

/**
 * 支付請求配置
 *
 * @author 趙屈犇
 * @version 1.0
 * @date 創建時間: 2022/4/23 16:54
 */
@RequestScanConfig
public class PayRequestConfig {

    /**
     * 微信統一下單
     */
    @RequestConfig(requestName = "統一下單", netWorkConfig = @NetWorkRequestConfig(rootUrl = "https://api.mch.weixin.qq.com/", serverUrl = "pay/unifiedorder",
            parsingRespDataType = DataType.XML, responseClass = WxOrderInfo.class, methodType = RequestMethod.POST_XML, body = {
            @ParamConfig(paramCode = "Appid", valueCode = "appid"),
            @ParamConfig(paramCode = "mch_id", valueCode = "mch_id"),
            @ParamConfig(paramCode = "nonce_str", valueCode = "nonce_str"),
            @ParamConfig(paramCode = "sign", valueCode = "sign"),
            @ParamConfig(paramCode = "sign_type", valueCode = "sign_type"),
            @ParamConfig(paramCode = "body", valueCode = "body"),
            @ParamConfig(paramCode = "detail", valueCode = "detail"),
            @ParamConfig(paramCode = "out_trade_no", valueCode = "out_trade_no"),
            @ParamConfig(paramCode = "fee_type", valueCode = "fee_type"),
            @ParamConfig(paramCode = "openid", valueCode = "openid"),
            @ParamConfig(paramCode = "total_fee", valueCode = "total_fee"),
            @ParamConfig(paramCode = "notify_url", valueCode = "notify_url"),
            @ParamConfig(paramCode = "trade_type", valueCode = "trade_type"),
            @ParamConfig(paramCode = "product_id", valueCode = "product_id"),
            @ParamConfig(paramCode = "spbill_create_ip", valueCode = "spbill_create_ip"),
    }))
    public static final String WX_API_PLACE_ORDER = "COM.THREEOX.BIZ.ORDER.CONFIG.PAYREQUESTCONFIG.WX_API_PLACE_ORDER";

}

支付方式工廠實現

此工廠繼承基礎實現類，并實現下單子類函數。

  • 調用微信統一下單接口
  • 處理下單返回數據，并返回至前端調用
package com.threeox.biz.order.factory.impl.wx;

import com.alibaba.fastjson.JSONObject;
import com.threeox.biz.order.config.OrderDictConstants;
import com.threeox.biz.order.config.PayRequestConfig;
import com.threeox.biz.order.config.extend.PaymentExtend;
import com.threeox.biz.order.entity.OrderInfo;
import com.threeox.biz.order.entity.wx.WxOrderInfo;
import com.threeox.biz.order.enums.PayWay;
import com.threeox.biz.order.factory.impl.base.BasePaymentFactory;
import com.threeox.biz.order.utils.PayUtils;
import com.threeox.biz.order.utils.wx.WXPayConstants;
import com.threeox.biz.order.utils.wx.WXPayUtil;
import com.threeox.drivenlibrary.engine.constants.config.DrivenModelDBConstants;
import com.threeox.drivenlibrary.engine.entity.driven.config.OpenPlatformConfigMessage;
import com.threeox.drivenlibrary.engine.request.execute.ExecuteRequestFactory;
import com.threeox.drivenlibrary.enums.ResponseResult;
import com.threeox.drivenlibrary.exception.ResponseException;
import com.threeox.drivenlibrary.manage.entity.UserInfoMessage;
import com.threeox.drivenlibrary.manage.factory.user.UserFactory;
import com.threeox.httplibrary.entity.HttpResponseInfo;
import com.threeox.utillibrary.date.TimeUtils;
import com.threeox.utillibrary.JAVA.IDGenerate;

import java.math.BigDecimal;

/**
 * 微信JSApi支付
 *
 * @author 趙屈犇
 * @version 1.0
 * @date 創建時間: 2022/4/23 17:38
 */
@PaymentExtend(OrderDictConstants.PayWay.WX_JS_API_V2)
public class WxJsApiV2PaymentFactory extends BasePaymentFactory {

    @Override
    protected JSONObject placeOrder(OrderInfo orderInfo, OpenPlatformConfigMessage openPlatform) throws Exception {
        UserInfoMessage userInfo = UserFactory.builder().getUser();
        JSONObject params = new JSONObject();
        params.put("fee_type", "CNY");
        params.put("openid", userInfo.getWxOpenId());
        params.put("body", orderInfo.getOrderName());
        params.put("nonce_str", IDGenerate.getUUId());
        params.put("appid", openPlatform.getWxAppId());
        params.put("mch_id", openPlatform.getWxMchId());
        params.put("detail", orderInfo.getBizSnapshot());
        params.put("product_id", orderInfo.getOrderId());
        params.put("out_trade_no", orderInfo.getOrderNum());
        params.put("trade_type", PayWay.WX_JS_API_V2.getCode());
        params.put("spbill_create_ip", orderInfo.getIpAddress());
        params.put("sign_type", WXPayConstants.SignType.MD5.name());
        params.put("total_fee", orderInfo.getPayMoney().multiply(new BigDecimal(100)).toBigInteger());
        params.put("notify_url", PayUtils.getNotifyUrl(PayWay.WX_JS_API_V2));
        params.put("sign", WXPayUtil.generateSignature(params, openPlatform.getWxMchSecret(), WXPayConstants.SignType.MD5));
        // 執行請求
        HttpResponseInfo responseInfo = ExecuteRequestFactory.builder().initConfig(DrivenModelDBConstants.DRIVEN_MANAGE_MODEL_DB_CODE, PayRequestConfig.WX_API_PLACE_ORDER)
                .requestParam(params).execute();
        if (responseInfo != null && responseInfo.isSuccess()) {
            WxOrderInfo wxOrderInfo = responseInfo.getResult();
            if ("SUCCESS".equals(wxOrderInfo.getReturn_code()) && wxOrderInfo.getReturn_code().equals(wxOrderInfo.getResult_code())) {
                JSONObject payResult = new JSONObject();
                payResult.put("appId", openPlatform.getWxAppId());
                payResult.put("nonceStr", IDGenerate.getUUId());
                payResult.put("package", "prepay_id=" + wxOrderInfo.getPrepay_id());
                payResult.put("timeStamp", String.valueOf(TimeUtils.getNowTimeMills()));
                payResult.put("signType", WXPayConstants.SignType.MD5.name());
                payResult.put("paySign", WXPayUtil.generateSignature(payResult, openPlatform.getWxMchSecret(), WXPayConstants.SignType.MD5));
                return payResult;
            }
        }
        throw new ResponseException(ResponseResult.PLACE_ORDER_FAILURE);
    }
}

回調接口

此接口繼承基礎回調實現類，并實現是否支付成功函數。

并，在其內部拼接簽名驗證是否正確。從而保證錯誤回調請求。

package com.threeox.biz.order.api.notify;

import com.alibaba.fastjson.JSONObject;
import com.threeox.biz.order.api.notify.base.BasePayNotifyExtend;
import com.threeox.biz.order.config.OrderResponseConfig;
import com.threeox.biz.order.entity.OrderInfo;
import com.threeox.biz.order.entity.wx.WxNotifyInfo;
import com.threeox.biz.order.utils.wx.WXPayConstants;
import com.threeox.biz.order.utils.wx.WXPayUtil;
import com.threeox.drivenlibrary.engine.annotation.api.Api;
import com.threeox.drivenlibrary.engine.entity.driven.config.OpenPlatformConfigMessage;
import com.threeox.drivenlibrary.enums.dictionary.ContentType;
import com.threeox.drivenlibrary.enums.dictionary.ResponseType;

/**
 * 微信JSApi支付回調通知
 *
 * @author 趙屈犇
 * @version 1.0
 * @date 創建時間: 2022/4/28 23:38
 */
@Api(apiUrl = "notify", apiName = "支付回調", moduleUrl = "pay/wxJsApi/v2", isVerifyToken = false, isVerifyLogin = false,
        isEncryptedResult = false, isDecryptParams = false, isStartAuth = false, requestContentType = ContentType.TEXT_XML,
        responseCode = OrderResponseConfig.WX_NOTIFY_RESPONSE, responseType = ResponseType.XML
)
public class WxJsV2PayNotifyExtend extends BasePayNotifyExtend<WxNotifyInfo> {

    @Override
    protected boolean isPaySuccess(OrderInfo orderInfo, OpenPlatformConfigMessage openPlatform) throws Exception {
        String returnCode = getRequestParams().getReturn_code();
        if ("SUCCESS".equals(returnCode)) {
            //驗證簽名是否正確
            // 回調驗簽時需要去除sign和空值參數
            JSONObject validParams = WXPayUtil.paraFilter(getParams());
            // 拼裝生成服務器端驗證的簽名
            String sign = WXPayUtil.generateSignature(validParams, openPlatform.getWxMchSecret(), WXPayConstants.SignType.MD5);
            // 因為微信回調會有八次之多,所以當第一次回調成功了,那么我們就不再執行邏輯了
            // 根據微信官網的介紹，此處不僅對回調的參數進行驗簽，還需要對返回的金額與系統訂單的金額進行比對等
            if (sign.equals(getParamValue("sign"))) {
                return true;
            }
        }
        return false;
    }

}

至此的話，微信V2JsApi業已完成開發。后期會逐漸完善更多三方支付功能。

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