利用微信官方文档下载微信对账单、资金账单

1.在pom文件里面添加依赖

                <dependency><groupId>com.github.wxpay</groupId><artifactId>wxpay-sdk</artifactId><version>0.0.3</version></dependency><!-- https://mvnrepository.com/artifact/com.google.code.gson/gson --><dependency><groupId>com.google.code.gson</groupId><artifactId>gson</artifactId><version>2.8.2</version></dependency>

2.重写config—关于config中的各种id、参数等,需要自行去微信后台上去找和设置

import com.github.wxpay.sdk.WXPayConfig;import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;public class MyConfig implements WXPayConfig {private byte[] certData;public MyConfig() throws Exception {//证书String certPath = "D:\\svn\\quickpassroot\\quick-pass-service\\quick-pass-core\\src\\main\\resources\\file\\apiclient_cert.p12";File file = new File(certPath);InputStream certStream = new FileInputStream(file);this.certData = new byte[(int) file.length()];certStream.read(this.certData);certStream.close();}//appidpublic String getAppID() {return "*******";}//商户号public String getMchID() {return "******";}//keypublic String getKey() {return "*******";}public InputStream getCertStream() {ByteArrayInputStream certBis = new ByteArrayInputStream(this.certData);return certBis;}public int getHttpConnectTimeoutMs() {return 8000;}public int getHttpReadTimeoutMs() {return 10000;}
}

3.DO
（1）对账单

public class WeChatBillDO implements Serializable {private Integer id;/*** 交易时间*/private String tradeTime;/*** 公众账号ID*/private String appId;/*** 商户号*/private String mchId;/*** 子商户号*/private String mchAppId;/*** 设备号*/private String deviceInfo;/*** 微信订单号*/private String transactionId;/*** 商户订单号*/private String outTradeNo;/*** 用户标识*/private String openId;/*** 交易类型*/private String tradeType;/*** 交易状态*/private String tradeStatus;/*** 付款银行*/private String payBank;/*** 货币种类*/private String moneyType;/*** 应结订单金额*/private String orderPay;/*** 代金劵金额*/private String voucherAmount;/*** 微信退款单号*/private String refundNumber;/*** 商户退款单号*/private String outRefundNo;/*** 退款金额*/private String refundAmount;/*** 充值劵退款金额*/private String refundAmountVoucher;/*** 退款类型*/private String refundsType;/*** 退款状态*/private String refundsStatus;/*** 商品名称*/private String commodityName;/*** 商户数据包*/private String dataPacket;/*** 手续费*/private String serviceCharge;/*** 费率*/private String rate;/*** 订单金额*/private String orderAmount;/*** 申请退款金额*/private String applicationRefundAmount;/*** 费率备注*/private String rateNotes;

（2）资金账单

public class WeChatCapitalBillDO implements Serializable {private Integer id;/*** 记账时间*/private String tradeTime;/*** 微信支付业务单号*/private String paymentNumber;/*** 资金流水单号*/private String flowNumber;/*** 业务名称*/private String businessName;/*** 业务类型*/private String businessType;/*** 收支类型*/private String inoutType;/*** 收支金额（元）*/private String inoutMoney;/*** 帐户结余（元）*/private String accountBalance;/*** 资金变更提交申请人*/private String applicant;/*** 备注*/private String remarks;/*** 业务凭证号*/private String voucherNumber;

4.下载资金账单,这个maven中没有提供方法,但是微信官方api文档中写了有,所以,重写了maven中的WXPay.java(就是复制一份到自己想买的目录中),添加下载资金账单的方法

 public Map<String, String> downloadfundflow(Map<String, String> reqData) throws Exception {return this.downloadfundflow(reqData, this.config.getHttpConnectTimeoutMs(), this.config.getHttpReadTimeoutMs());}public Map<String, String> downloadfundflow(Map<String, String> reqData, int connectTimeoutMs, int readTimeoutMs) throws Exception {String url;if (this.useSandbox) {url = "https://api.mch.weixin.qq.com/sandboxnew/pay/downloadfundflow";} else {url = "https://api.mch.weixin.qq.com/pay/downloadfundflow";}String respStr = this.requestWithCert(url, this.fillRequestData(reqData), connectTimeoutMs, readTimeoutMs).trim();Object ret;if (respStr.indexOf("<") == 0) {ret = WXPayUtil.xmlToMap(respStr);} else {ret = new HashMap();((Map)ret).put("return_code", "SUCCESS");((Map)ret).put("return_msg", "ok");((Map)ret).put("data", respStr);}return (Map)ret;}

5.下载对账单及资金账单

import com.google.common.base.Strings;
import com.google.common.collect.Lists;
import com.weein.quickpass.base.entity.WeChatBillDO;
import com.weein.quickpass.base.entity.WeChatCapitalBillDO;
import com.weein.quickpass.core.config.MyConfig;
import com.weein.wcommon.utils.DateUtils;import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;import static com.github.wxpay.sdk.WXPayConstants.SignType.HMACSHA256;/*** @author hzt* @describe 下载微信账单*/
public class DownloadWeChatBill {//main方法，用来测试public static void main(String[] args) throws Exception {//List<WeChatBillDO> list = downloadBill();List<WeChatCapitalBillDO> list = downloadCapitalBill();System.out.println(list);}/*** 下载微信对账单** @return* @throws Exception*/public static List<WeChatBillDO> downloadBill() throws Exception {List<WeChatBillDO> list = Lists.newArrayList();MyConfig config = new MyConfig();WXPay wxpay = new WXPay(config, HMACSHA256);Map<String, String> data = new HashMap<String, String>();//下载对账单的日期，格式：20140603，当前日期前一天。String billDate = DateUtils.format(DateUtils.addDay(new Date(), -1), DateUtils.FORMAT_DATE_02);data.put("bill_date", billDate);//data.put("bill_date", "20190329");data.put("bill_type", "ALL");Map<String, String> resp = wxpay.downloadBill(data);String result = resp.get("data");//查询当日没有账单时if (Strings.isNullOrEmpty(result)) {return list;}int i = result.indexOf("`");int j = result.indexOf("总");String substring = result.substring(i, j - 2);String[] temp = substring.split(",``");for (int k = 0; k < temp.length; k++) {String[] payment = temp[k].replace("`", "").split(",");WeChatBillDO weChatBillDO = new WeChatBillDO();weChatBillDO.setTradeTime(payment[0]);weChatBillDO.setAppId(payment[1]);weChatBillDO.setMchId(payment[2]);weChatBillDO.setMchAppId(payment[3]);weChatBillDO.setDeviceInfo(payment[4]);weChatBillDO.setTransactionId(payment[5]);weChatBillDO.setOutTradeNo(payment[6]);weChatBillDO.setOpenId(payment[7]);weChatBillDO.setTradeType(payment[8]);weChatBillDO.setTradeStatus(payment[9]);weChatBillDO.setPayBank(payment[10]);weChatBillDO.setMoneyType(payment[11]);weChatBillDO.setOrderPay(payment[12]);weChatBillDO.setVoucherAmount(payment[13]);weChatBillDO.setRefundNumber(payment[14]);weChatBillDO.setOutRefundNo(payment[15]);weChatBillDO.setRefundAmount(payment[16]);weChatBillDO.setRefundAmountVoucher(payment[17]);weChatBillDO.setRefundsType(payment[18]);weChatBillDO.setRefundsStatus(payment[19]);weChatBillDO.setCommodityName(payment[20]);weChatBillDO.setDataPacket(payment[21]);weChatBillDO.setServiceCharge(payment[22]);weChatBillDO.setRate(payment[23]);weChatBillDO.setOrderAmount(payment[24]);weChatBillDO.setApplicationRefundAmount(payment[25]);list.add(weChatBillDO);}return list;}/*** 下载微信支付资金账单** @return* @throws Exception*/public static List<WeChatCapitalBillDO> downloadCapitalBill() throws Exception {List<WeChatCapitalBillDO> list = Lists.newArrayList();MyConfig config = new MyConfig();WXPay wxpay = new WXPay(config, HMACSHA256);Map<String, String> data = new HashMap<String, String>();//下载账单的日期，格式：20140603，当前日期前一天。//String billDate = DateUtils.format(DateUtils.addDay(new Date(), -1), DateUtils.FORMAT_DATE_02);//data.put("bill_date", billDate);data.put("bill_date", "20190329");SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");Date date = sdf.parse(data.get("bill_date"));int year = date.getYear() + 1900;//账单的资金来源账户account_type：Basic  基本账户/Operation 运营账户/Fees 手续费账户data.put("account_type", "Basic");Map<String, String> resp = wxpay.downloadfundflow(data);String result = resp.get("data");//查询当日没有账单时if (Strings.isNullOrEmpty(result)) {return list;}int i = result.indexOf("`");int j = result.indexOf("资金流水总笔数");String substring = result.substring(i, j);//方法比较简单暴力,通过年份(比如2018 + `) 去切割,最后再把年份拼接上去String[] temp = substring.split("`" + year);for (int m = 1; m < temp.length; m++) {String[] payment = temp[m].replace("`", "").split(",");WeChatCapitalBillDO weChatCapitalBillDO = new WeChatCapitalBillDO();weChatCapitalBillDO.setTradeTime(year + payment[0]);weChatCapitalBillDO.setPaymentNumber(payment[1]);weChatCapitalBillDO.setFlowNumber(payment[2]);weChatCapitalBillDO.setBusinessName(payment[3]);weChatCapitalBillDO.setBusinessType(payment[4]);weChatCapitalBillDO.setInoutType(payment[5]);weChatCapitalBillDO.setInoutMoney(payment[6]);weChatCapitalBillDO.setAccountBalance(payment[7]);weChatCapitalBillDO.setApplicant(payment[8]);weChatCapitalBillDO.setRemarks(payment[9]);if (payment.length == 10) {if (payment[9].equals("system")) {weChatCapitalBillDO.setVoucherNumber("");}} else if (payment.length == 11) {weChatCapitalBillDO.setVoucherNumber(payment[10]);}list.add(weChatCapitalBillDO);}return list;}
}

5.将得到的数据定时存入数据库中

/*** 生成下载微信对账单并存入数据库任务*/@Scheduled(cron = "0/10 * * * * ?")public void downloadWeChatBill() {weChatBillService.saveWeChatBill();}/*** 生成下载微信资金账单并存入数据库任务*/@Scheduled(cron = "0/10 * * * * ?")public void downloadFundFlow() {weChatCapitalBillService.saveFundFlow();}

6.service

public interface IWeChatBillService {int saveWeChatBill();
}

public interface IWeChatCapitalBillService {int saveFundFlow();
}

7.实现,两个账单存入数据库的实现一样，就放一个

@Service(version = DubboConstant.DUBBO_SERVICE_VERSION)
@Component
public class WeChatCapitalBillServiceImpl implements IWeChatCapitalBillService {@ResourceIWeChatCapitalBillMapper weChatCapitalBillMapper;@Overridepublic int saveFundFlow() {int x = 0;List<WeChatCapitalBillDO> list = null;try {list = DownloadWeChatBill.downloadCapitalBill();} catch (Exception e) {e.printStackTrace();}if (CollectionUtils.isNotEmpty(list)) {for (WeChatCapitalBillDO weChatCapitalBillDO : list) {weChatCapitalBillMapper.insertSelective(weChatCapitalBillDO);x++;}}return x;}
}

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