首先贴出官方文档,关于介绍,场景,参数说明,可以直接看文档:https://pay.weixin.qq.com/wiki/doc/api/index.html
官方文档:https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=9_1
推荐maven依赖:
com.github.wxpay
wxpay-sdk
3.0.9
1. 【统一下单】
商户系统先调用该接口在微信支付服务后台生成预支付交易单,返回正确的预支付交易会话标识后再在APP里面调起支付。
微信统一工具类
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.lang.reflect.Field;
import java.security.KeyStore;
import java.security.SecureRandom;
import java.util.*;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.github.wxpay.sdk.WXPayConstants;
import com.github.wxpay.sdk.WXPayUtil;
import com.google.common.collect.Maps;
import org.apache.commons.lang.StringUtils;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ssl.DefaultHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.BasicHttpClientConnectionManager;
import org.apache.http.util.EntityUtils;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.web.client.RestTemplate;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.crypto.Cipher;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.SecretKeySpec;
import java.security.InvalidKeyException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.Security;
public class WXUtil {
public static final String APP_ID = "";
public static final String APPLET_APP_ID = "";
public static final String MCH_ID = ""; // 微信商户号
public static final String KEY = ""; // 微信支付密钥
public static final String NOTIFY_URL = ""; // 微信支付成功回调url
public static final String REFUND_NOTIFY_URL = ""; // 微信退款成功回调
public static final String SIGN_PACKAGE = "Sign=WXPay";
private static Cipher cipher = null; //解码器
public static String createSign(Map parameters) throws Exception {
List keys = new ArrayList(parameters.keySet());
Collections.sort(keys);
String prestr = "";
for (int i = 0; i < keys.size(); i++) {
String key = keys.get(i);
Object value = parameters.get(key);
// value = URLEncoder.encode(value, "UTF-8");
if(StringUtils.isNotBlank(parameters.get(key)+"") && value != null) {
if (i == keys.size() - 1) {//拼接时,不包括最后一个&字符
prestr = prestr + key + "=" + value;
} else {
prestr = prestr + key + "=" + value + "&";
}
}
}
prestr += "&key="+KEY;
return prestr;
}
public static Map objectToMap(Object obj) throws Exception {
if(obj == null){
return null;
}
Map map = new HashMap();
Field[] declaredFields = obj.getClass().getDeclaredFields();
for (Field field : declaredFields) {
field.setAccessible(true);
map.put(field.getName(), field.get(obj));
}
return map;
}
public static Map applayRefund(String userId, String payId, String orderNo, Double amount, Double refundMoney) throws Exception {
Map map = new HashMap();
map.put("appid", APP_ID);
map.put("mch_id", MCH_ID);
map.put("nonce_str", UUID_MD5.getUUID());
map.put("transaction_id", payId);
map.put("out_refund_no", orderNo);
int total_fee = (int) (amount * 100);
map.put("total_fee", total_fee+"");
int refund_fee = (int) (refundMoney * 100);
map.put("refund_fee", refund_fee+"");
map.put("notify_url", REFUND_NOTIFY_URL);
String stringSign = WXUtil.createSign(map);
String sign = WXPayUtil.MD5(stringSign).toUpperCase();
map.put("sign", sign);
String data = WXPayUtil.mapToXml(map);
File file = new File("apiclient_cert.p12");
InputStream in = new FileInputStream(file);
char password[] = WXUtil.MCH_ID.toCharArray();
java.io.InputStream certStream = in;
KeyStore ks = KeyStore.getInstance("PKCS12");
ks.load(certStream, password);
KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
kmf.init(ks, password);
SSLContext sslContext = SSLContext.getInstance("TLS");
sslContext.init(kmf.getKeyManagers(), null, new SecureRandom());
SSLConnectionSocketFactory sslConnectionSocketFactory = new SSLConnectionSocketFactory(sslContext,
new String[] { "TLSv1" }, null, new DefaultHostnameVerifier());
BasicHttpClientConnectionManager connManager = new BasicHttpClientConnectionManager();
CloseableHttpClient httpClient = HttpClients.custom().setSSLSocketFactory(sslConnectionSocketFactory).build();
String url = (new StringBuilder()).append("https://").append("api.mch.weixin.qq.com")
.append("/secapi/pay/refund").toString();
HttpPost httpPost = new HttpPost(url);
RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(10000).setConnectTimeout(10000).build();
httpPost.setConfig(requestConfig);
StringEntity postEntity = new StringEntity(data, "UTF-8");
httpPost.addHeader("Content-Type", "text/xml");
httpPost.addHeader("User-Agent", (new StringBuilder()).append(WXPayConstants.USER_AGENT).append(" ")
.append(map.get("mch_id")).toString());
httpPost.setEntity(postEntity);
CloseableHttpResponse httpResponse = httpClient.execute(httpPost);
org.apache.http.HttpEntity httpEntity = httpResponse.getEntity();
String reponseString = EntityUtils.toString(httpEntity, "UTF-8");
return WXPayUtil.xmlToMap(reponseString);
}
/**
* 提现
* @param openid 微信openid
* @param realName 真实姓名
* @param money 提现金额
* @return
* @throws Exception
*/
public static Map wxWithdraw(String openid,String realName, Double money) throws Exception{
Map map = new HashMap();
map.put("mch_appid", APP_ID);
map.put("mchid", MCH_ID);
map.put("nonce_str", UUID_MD5.getUUID());
map.put("partner_trade_no", UUID_MD5.getUUID());
map.put("openid", openid);
map.put("check_name", "FORCE_CHECK"); //强制实名,如需不校真实姓名,则改为NO_CHECK
map.put("re_user_name", realName);
int total_fee = (int) (money * 100);
map.put("amount", total_fee+"");
map.put("desc", "账户提现");
map.put("spbill_create_ip", "xxx.xxx.xxx.xxx");
String stringSign = WXUtil.createSign(map);
String sign = WXPayUtil.MD5(stringSign).toUpperCase();
map.put("sign", sign);
String data = WXPayUtil.mapToXml(map);
File file = new File("apiclient_cert.p12");
InputStream in = new FileInputStream(file);
char password[] = WXUtil.MCH_ID.toCharArray();
java.io.InputStream certStream = in;
KeyStore ks = KeyStore.getInstance("PKCS12");
ks.load(certStream, password);
KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
kmf.init(ks, password);
SSLContext sslContext = SSLContext.getInstance("TLS");
sslContext.init(kmf.getKeyManagers(), null, new SecureRandom());
SSLConnectionSocketFactory sslConnectionSocketFactory = new SSLConnectionSocketFactory(sslContext,
new String[] { "TLSv1" }, null, new DefaultHostnameVerifier());
BasicHttpClientConnectionManager connManager = new BasicHttpClientConnectionManager();
CloseableHttpClient httpClient = HttpClients.custom().setSSLSocketFactory(sslConnectionSocketFactory).build();
String url = (new StringBuilder()).append("https://").append("api.mch.weixin.qq.com")
.append("/mmpaymkttransfers/promotion/transfers").toString();
HttpPost httpPost = new HttpPost(url);
RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(10000).setConnectTimeout(10000).build();
httpPost.setConfig(requestConfig);
StringEntity postEntity = new StringEntity(data, "UTF-8");
httpPost.addHeader("Content-Type", "text/xml");
httpPost.addHeader("User-Agent", (new StringBuilder()).append(WXPayConstants.USER_AGENT).append(" ")
.append(map.get("mch_id")).toString());
httpPost.setEntity(postEntity);
CloseableHttpResponse httpResponse = httpClient.execute(httpPost);
org.apache.http.HttpEntity httpEntity = httpResponse.getEntity();
String reponseString = EntityUtils.toString(httpEntity, "UTF-8");
return WXPayUtil.xmlToMap(reponseString);
}
/**
* 微信返回参数解密
* @param reqInfo
* @return
* @throws Exception
*/
public static Map parseReqInfo(String reqInfo) throws Exception {
init();
Base64.Decoder decoder = Base64.getDecoder();
byte[] base64ByteArr = decoder.decode(reqInfo);
String result = new String(cipher.doFinal(base64ByteArr));
return WXPayUtil.xmlToMap(result);
}
public static void init() {
String key = getMD5(KEY);
SecretKeySpec secretKeySpec = new SecretKeySpec(key.getBytes(), "AES");
Security.addProvider(new BouncyCastleProvider());
try {
cipher = Cipher.getInstance("AES/ECB/PKCS7Padding");
cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (InvalidKeyException e) {
e.printStackTrace();
}
}
public static String getMD5(String str) {
try {
MessageDigest md = MessageDigest.getInstance("MD5");
String result = MD5(str, md);
return result;
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return "";
}
}
public static String MD5(String strSrc, MessageDigest md) {
byte[] bt = strSrc.getBytes();
md.update(bt);
String strDes = bytes2Hex(md.digest());
return strDes;
}
public static String bytes2Hex(byte[] bts) {
StringBuffer des = new StringBuffer();
String tmp = null;
for (int i = 0; i < bts.length; i++) {
tmp = (Integer.toHexString(bts[i] & 0xFF));
if (tmp.length() == 1) {
des.append("0");
}
des.append(tmp);
}
return des.toString();
}
public static String httpClient(String data) throws Exception{
BasicHttpClientConnectionManager connManager = new BasicHttpClientConnectionManager();
HttpClient httpClient = HttpClientBuilder.create().setConnectionManager(connManager).build();
String url = (new StringBuilder()).append("https://").append("api.mch.weixin.qq.com").append("/pay/unifiedorder").toString();
HttpPost httpPost = new HttpPost(url);
RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(10000).setConnectTimeout(10000).build();
httpPost.setConfig(requestConfig);
StringEntity postEntity = new StringEntity(data, "UTF-8");
httpPost.addHeader("Content-Type", "text/xml");
httpPost.addHeader("User-Agent", (new StringBuilder()).append(WXPayConstants.USER_AGENT).append(" ").append(WXUtil.MCH_ID).toString());
httpPost.setEntity(postEntity);
HttpResponse httpResponse = httpClient.execute(httpPost);
org.apache.http.HttpEntity httpEntity = httpResponse.getEntity();
String reponseString = EntityUtils.toString(httpEntity, "UTF-8");
return reponseString;
}
}
统一下单 - 微信预支付
@NoArgsConstructor
@Data
@Accessors(chain = true)
public class WeixinPayReqDto {
@ApiModelProperty(value="请求参数")
private WeixinPayReqData data;
@NoArgsConstructor
@Data
@Accessors(chain=true)
public class WeixinPayReqData {
@ApiModelProperty(value="总金额")
private double totalMoney;
@ApiModelProperty(value="订单号")
private String out_trade_no;
@ApiModelProperty(value="openid")
private String openid;
}
}
@PostMapping("weixinPay")
public BaseDataResDto
@Override
public BaseDataResDto
成功返回给安卓/IOS,由他们调起微信收银台发起付款即可。
2. 【微信支付成功回调】 (支付结果通知)
支付完成后,微信会把相关支付结果及用户信息通过数据流的形式发送给商户,商户需要接收处理,并按文档规范返回应答。
该链接是通过【统一下单API】中提交的参数notify_url设置,如果链接无法访问,商户将无法接收到微信通知。
通知url必须为直接可访问的url,不能携带参数。
注意:
① 同样的通知可能会多次发送给商户系统。商户系统必须能够正确处理重复的通知。
② 后台通知交互时,如果微信收到商户的应答不符合规范或超时,微信会判定本次通知失败,重新发送通知,直到成功为止(在通知一直不成功的情况下,微信总共会发起多次通知,通知频率为15s/15s/30s/3m/10m/20m/30m/30m/30m/60m/3h/3h/3h/6h/6h - 总计 24h4m),但微信不保证通知最终一定能成功。
③ 在订单状态不明或者没有收到微信支付结果通知的情况下,建议商户主动调用微信支付【查询订单API】确认订单状态。
@XmlRootElement(name = "xml")
@XmlAccessorType(XmlAccessType.FIELD)
@NoArgsConstructor
@Data
@Accessors(chain=true)
public class PayResDto {
private String return_msg;
private String return_code;
private String appid;
private String mch_id;
private String device_info;
private String nonce_str;
private String sign;
private String result_code;
private String err_code;
private String err_code_des;
private String openid;
private String is_subscribe;
private String trade_type;
private String bank_type;
private Integer total_fee;
private String fee_type;
private Integer cash_fee;
private String cash_fee_type;
private Integer coupon_fee;
private Integer coupon_count;
private String coupon_id_$n;
private Integer coupon_fee_$n;
private String transaction_id;
private String out_trade_no;
private String attach;
private String time_end;
}
import com.github.wxpay.sdk.WXPayUtil;
@PostMapping("weixinPayCallBack")
public String weixinPayCallBack(@RequestBody PayResDto param) throws Exception {
Map map = capitalMainLogService.weixinPayCallBack(param);
return WXPayUtil.mapToXml(map);
}
@Override
public Map weixinPayCallBack(PayResDto param) {
Map map = new HashMap();
map.put("return_code", "SUCCESS");
if (param == null) {
map.put("return_msg", "参数为空");
return map;
}
// 根据订单号查看订单信息
ShopingOrder shopingOrder = shopingOrderService.selectOne(new EntityWrapper().eq("order_no", param.getOut_trade_no().substring(0, 20)));
// 已经付款
if (Arrays.asList(1, 2, 3, 5, 6).contains(shopingOrder.getStatus())) {
map.put("return_msg", "OK");
return map;
}
shopingOrder.setStatus(1).setPayId(param.getTransaction_id()).setPayDate(newDate()).setOutTradeNo(param.getOut_trade_no()).setPayType(2);
// 修改支付状态为成功
shopingOrderMapper.updateById(shopingOrder);
// 分销
distributionService.asyncDistributionFund(shopingOrder);
map.put("return_msg", "OK");
return map;
}
3. 【查询订单】
接口提供所有微信支付订单的查询,商户可以通过该接口主动查询订单状态,完成下一步的业务逻辑。
需要调用查询接口的情况:
◆ 当商户后台、网络、服务器等出现异常,商户系统最终未接收到支付通知;
◆ 调用支付接口后,返回系统错误或未知交易状态情况;
◆ 调用被扫支付API,返回USERPAYING的状态;
◆ 调用关单或撤销接口API之前,需确认支付状态;
@Bean
public RestTemplate restTemplate() {
RestTemplate restTemplate = new RestTemplate();
Charset thirdRequest = Charset.forName("UTF-8");
// 处理请求中文乱码问题
List> messageConverters = restTemplate.getMessageConverters();
for (HttpMessageConverter messageConverter : messageConverters) {
if (messageConverter instanceof StringHttpMessageConverter) {
((StringHttpMessageConverter) messageConverter).setDefaultCharset(thirdRequest);
}
if (messageConverter instanceof MappingJackson2HttpMessageConverter) {
((MappingJackson2HttpMessageConverter) messageConverter).setDefaultCharset(thirdRequest);
}
if (messageConverter instanceof AllEncompassingFormHttpMessageConverter) {
((AllEncompassingFormHttpMessageConverter) messageConverter).setCharset(thirdRequest);
}
}
return restTemplate;
}
@Autowired
private RestTemplate restTemplate;
/** 微信查询订单 */
@PostMapping("weixinOrderQuery")
public Map weixinOrderQuery(@RequestParam String out_trade_no) throws Exception {
Map map = new HashMap();
map.put("appid", WXUtil.APP_ID);
map.put("mch_id", WXUtil.MCH_ID);
map.put("nonce_str", UUID_MD5.getUUID());
map.put("out_trade_no", out_trade_no);
String sign = WXPayUtil.MD5(WXUtil.createSign(map)).toUpperCase();
map.put("sign", sign);
String data = WXPayUtil.mapToXml(map);
String response = restTemplate.postForObject("https://api.mch.weixin.qq.com/pay/orderquery", data, String.class);
return WXPayUtil.xmlToMap(response);
}
4. 【退款】
当交易发生之后一段时间内,由于买家或者卖家的原因需要退款时,卖家可以通过退款接口将支付款退还给买家,微信支付将在收到退款请求并且验证成功之后,按照退款规则将支付款按原路退到买家帐号上。
注意:
◆ 交易时间超过一年的订单无法提交退款;
◆ 微信支付退款支持单笔交易分多次退款,多次退款需要提交原支付订单的商户订单号和设置不同的退款单号。申请退款总金额不能超过订单金额。 一笔退款失败后重新提交,请不要更换退款单号,请使用原商户退款单号。
◆ 请求频率限制:150qps,即每秒钟正常的申请退款请求次数不超过150次
错误或无效请求频率限制:6qps,即每秒钟异常或错误的退款申请请求不超过6次
◆ 每个支付订单的部分退款次数不能超过50次
◆ 如果同一个用户有多笔退款,建议分不同批次进行退款,避免并发退款导致退款失败
@Override
public BaseResDto executeRefund(String orderRefundId) throws Exception{
ShoppingOrderRefundEntity shoppingOrderRefund = shopingOrderRefundService.selectById(orderRefundId).setRefundMiddleTime(new Date()).setStatus(3);//退款中
String orderId = shoppingOrderRefund.getOrderId();
ShopingOrder shopingOrder = shopingOrderMapper.selectById(orderId) .setRefundStatus(3);//退款中
Double refundMoney = shoppingOrderRefund.getRefundMoney();
Double amount = shopingOrder.getAmount();
if (refundManey > amount)
return BaseResDto.baseResDto(Status.ERROR, "退款金额错误!");
Map wxMap = WXUtil.applayRefund(shopingOrder.getUserId(), shopingOrder.getPayId(), shopingOrder.getOutTradeNo(), amount, refundMoney);
if (!wxMap.get("result_code").equals("SUCCESS"))
return BaseResDto.baseResDto(Status.ERROR, "申请微信退款失败!");
// 下面接入自己的业务逻辑...
return new BaseResDto(Status.SUCCESS);
}
5. 【退款回调通知】
当商户申请的退款有结果后(退款状态为:退款成功、退款关闭、退款异常),微信会把相关结果发送给商户,商户需要接收处理,并返回应答。
对后台通知交互时,如果微信收到商户的应答不是成功或超时,微信认为通知失败,微信会通过一定的策略定期重新发起通知,尽可能提高通知的成功率,但微信不保证通知最终能成功(通知频率为15s/15s/30s/3m/10m/20m/30m/30m/30m/60m/3h/3h/3h/6h/6h - 总计 24h4m)。
注意:同样的通知可能会多次发送给商户系统。商户系统必须能够正确处理重复的通知。
推荐的做法是,当收到通知进行处理时,首先检查对应业务数据的状态,判断该通知是否已经处理过,如果没有处理过再进行处理,如果处理过直接返回结果成功。在对业务数据进行状态检查和处理之前,要采用数据锁进行并发控制,以避免函数重入造成的数据混乱。
特别说明:退款结果对重要的数据进行了加密,商户需要用商户秘钥进行解密后才能获得结果通知的内容。
@XmlRootElement(name = "xml")
@XmlAccessorType(XmlAccessType.FIELD)
@NoArgsConstructor
@Data
@Accessors(chain = true)
public class WXRefundReqDto { //严格按照微信官方文档封装的实体类
private String return_msg;
private String return_code;
private String appid;
private String mch_id;
private String nonce_str;
private String req_info;
private String transaction_id; //微信订单号
private String out_trade_no; //商户订单号
private String refund_id; //微信退款单号
private String out_refund_no; //商户退款单号
private String total_fee; //订单金额
private String settlement_total_fee; //应结订单金额
private String refund_fee; //申请退款金额
private String settlement_refund_fee; //退款金额
private String refund_status; //退款状态
private String success_time; //退款成功时间
private String refund_recv_accout; //退款入账账户
private String refund_account; //退款资金来源
private String refund_request_source; //退款发起来源
}
@PostMapping("refundCallBack")
public String refundCallBack(@RequestBody WXRefundReqDto param) throws Exception {
Map map = capitalMainLogService.refundCallBack(param);
return WXPayUtil.mapToXml(map);
}
@Override
public Map refundCallBack(WXRefundReqDto param) throws Exception {
Map map = new HashMap();
if (param == null) {
map.put("return_code", "FAIL");
map.put("return_msg", "参数为空");
return map;
}
if (!"SUCCESS".equals(param.getReturn_code())) {
map.put("return_code", "FAIL");
map.put("return_msg", "退款失败");
return map;
}
Map signMap = objectToMap(param);
signMap.remove("return_code");
signMap.remove("return_msg");
signMap.remove("appid");
signMap.remove("mch_id");
signMap.remove("nonce_str");
signMap.remove("req_info");
String refundSignString = WXUtil.createSign(signMap);
String sign = WXPayUtil.MD5(refundSignString).toUpperCase();
// 验证签名
if (!sign.equals(param.getReq_info())) {
map.put("return_code", "FAIL");
map.put("return_msg", "签名错误");
}
// 根据订单号查看订单信息
String order_no = (String) WXUtil.parseReqInfo(param.getReq_info()).get("out_trade_no");
ShopingOrder shopingOrder = shopingOrderMapper.selectOne(new ShopingOrder().setOutTradeNo(order_no));
// 已经退款
if (shopingOrder.getStatus() == 4) {
map.put("return_msg", "OK");
map.put("return_code", "SUCCESS");
return map;
}
// 修改订单表退款状态
shopingOrder.setRefundStatus(4); //退款成功
if (!shopingOrderService.updateById(shopingOrder)) {
map.put("return_code", "FAIL");
return map;
}
// 其他业务逻辑自行编写...
map.put("return_msg", "OK");
map.put("return_code", "SUCCESS");
return map;
}
6. 【查询退款】
提交退款申请后,通过调用该接口查询退款状态。退款有一定延时,用零钱支付的退款20分钟内到账,银行卡支付的退款3个工作日后重新查询退款状态。
@Autowired
private RestTemplate restTemplate;
/** 查询微信退款 */
@PostMapping("wxRefundQuery")
public Map wxRefundQuery(@RequestParam String out_trade_no) throws Exception{
Map map = new HashMap();
map.put("appid", WXUtil.APP_ID);
map.put("mch_id", WXUtil.MCH_ID);
map.put("nonce_str", UUID_MD5.getUUID());
map.put("out_trade_no", out_trade_no);
String sign = WXPayUtil.MD5(WXUtil.createSign(map)).toUpperCase();
map.put("sign", sign);
String data = WXPayUtil.mapToXml(map);
String response = restTemplate.postForObject("https://api.mch.weixin.qq.com/pay/refundquery", data, String.class);
return WXPayUtil.xmlToMap(response);
}
7. 【企业付款到零钱】(提现)
使用条件和开通步骤参考官方文档:https://pay.weixin.qq.com/wiki/doc/api/tools/mch_pay.php?chapter=14_1
企业付款为企业提供付款至用户零钱的能力,支持通过API接口付款,或通过微信支付商户平台(pay.weixin.qq.com)网页操作付款。
【使用条件】(切记,博主就被坑过)
◆ 商户号(或同主体其他非服务商商户号)已入驻90日
◆ 截止今日回推30天,商户号(或同主体其他非服务商商户号)连续不间断保持有交易
◆ 登录微信支付商户平台-产品中心,开通企业付款。
◆ spbill_create_ip 必须在商户平台配置好IP白名单
@PostMapping("withdraw")
public BaseResDto withdraw(@RequestParam Bigdecimal money,@RequestHeader("token") String token) {
// 验证token,并根据token获取用户实体UserEntity,此处省略...
Map map = WXUtil.wxWithdraw(userEntity.getWxOpenId(), userEntity.getRealName(), money); //如果check_name为NO_CHECK,则传昵称也可以
if (!("SUCCESS".equals(map.get("return_code")) && "SUCCESS".equals(map.get("result_code"))))
return new BaseResDto(Status.PARAMETERERROR, "提现失败");
// 此处编写业务逻辑,并记录提现日志
return new BaseResDto(Status.SUCCESS);
}
Native支付可分为两种模式,商户根据支付场景选择相应模式。
一般我们电商网站都会选用模式二:https://pay.weixin.qq.com/wiki/doc/api/native.php?chapter=6_5
@RestController
public class WxNativePay {
@PostMapping("/wxNativePay")
public BaseDataResDto wxNativePay() {
try{
Map map = new HashMap();
map.put("appid", WXUtil.APP_ID);
map.put("mch_id", WXUtil.MCH_ID);
map.put("nonce_str", UUID_MD5.getUUID());
map.put("sign_type", "MD5");
map.put("body", "商品支付");
map.put("out_trade_no", "1234560001");
map.put("fee_type", "CNY");
map.put("total_fee", 10 + "");
map.put("spbill_create_ip", "127.0.0.1");
map.put("notify_url", WXUtil.NOTIFY_URL);
map.put("trade_type", "NATIVE");
map.put("sign", WXPayUtil.MD5(WXUtil.createSign(map)).toUpperCase());
// 请求报文 (map转为xml)
String data = WXPayUtil.mapToXml(map);
Map mapResponse = WXPayUtil.xmlToMap(WXUtil.httpClient(data));
if (Objects.equals(mapResponse.get("result_code"),"SUCCESS")) {
String content = mapResponse.get("code_url");
JSONObject json = new JSONObject();
json.put("codeUrl", content);
return new BaseDataResDto(Status.SUCCESS).setData(json);
}
} catch (Exception e) {
e.printStackTrace();
}
return new BaseDataResDto(Status.ERROR);
}
}
直接将code_url返给前端,前端调用第三方库转化为二维码,供用户扫码付款;注意:code_url有效期为2小时,过期后扫码不能再发起支付。
【小结】:
原理很简单,签名验签是关键,无非就是API;微信小程序支付,H5,Web扫码支付,APP支付,区别不大,且支付结果通知(异步回调),查询订单,退款,查询退款等的API是一致的;下单API仅仅也只是 trade_type 不同而已 ~