1. 写好配置项
#微信支付接口 ias.pay.wxpay.payUrl=https://api.mch.weixin.qq.com/pay/unifiedorder #回调地址 ias.pay.wxpay.notifyUrl= #终端IP ias.pay.wxpay.spbillCreateIp= ias.pay.wxpay.appId= ias.pay.wxpay.mchId= ias.pay.wxpay.tradeType=APP ias.pay.wxpay.packages=Sign=WXPay ias.pay.wxpay.key=
2. java测试用例调用微信第三方支付,其中的payProp为配置项,
@Autowired private PayProp payProp; @Test public void createPay() { WxPay wxPay = new WxPay(); wxPay.setPayUrl(payProp.getWxpay().getPayUrl()); wxPay.setAppId(payProp.getWxpay().getAppId()); wxPay.setMchId(payProp.getWxpay().getMchId()); wxPay.setSpbillCreateIp(payProp.getWxpay().getSpbillCreateIp()); wxPay.setNotifyUrl(payProp.getWxpay().getNotifyUrl()); wxPay.setTradeType(payProp.getWxpay().getTradeType()); wxPay.setKey(payProp.getWxpay().getKey()); wxPay.setBody("腾讯充值中心-QQ会员充值"); wxPay.setNonceStr(随机字符串,长度要求在32位以内。); wxPay.setOutTradeNo(订单号); wxPay.setTotalFee(支付金额); wxPay.setSign(WeiXinUtil.sign(wxPay, wxPay.getKey())); String xml = XmlUtil.toXml(wxPay); log.debug("微信支付xml为:\n{}", xml); String results = RestClient.getClient().postForObject(wxPay.getPayUrl(), xml, String.class); log.debug("返回的xml:\n{}", results.toString()); WXResults wxResults = XmlUtil.toBean(results, WXResults.class); if(StringUtil.equals(wxResults.getReturnCode(), "SUCCESS")) { log.debug("返回信息", wxResults.toString()); } else { throw new BusinessException(30010, wxResults.getReturnMsg()); } }
3。支付成功,回调接口
@RequestMapping(value="wxpay/notify", produces={"application/xml"}) public String notify(@RequestBody String callback) throws DocumentException { log.debug("微信支付回调xml为:{}", callback); WxNotify notify = XmlUtil.toBean(callback, WxNotify.class); if(notify.getReturnCode().equals("SUCCESS") || notify.getResultCode().equals("SUCCESS")) { Map<String, Object> map = XmlUtil.xml2map(callback, false); boolean signVerified = WeiXinUtil.isWechatSign(map, payProp.getWxpay().getKey()); if(signVerified) { log.info("微信支付验签成功!!!"); log.info("微信支付完成!!!!!"); } } return "<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>"; }
4.其中用到的XmlUtil帮助类附上代码
/** * xml转map 不带属性 * @param xmlStr * @param needRootKey 是否需要在返回的map里加根节点键 * @return * @throws DocumentException */ public static Map<String,Object> xml2map(String xmlStr, boolean needRootKey) throws DocumentException { Document doc = DocumentHelper.parseText(xmlStr); Element root = doc.getRootElement(); Map<String, Object> map = xml2map(root); if(root.elements().size()==0 && root.attributes().size()==0){ return map; } if(needRootKey){ //在返回的map里加根节点键(如果需要) Map<String, Object> rootMap = new HashMap<String, Object>(); rootMap.put(root.getName(), map); return rootMap; } return map; } /** * 将传入xml文本转换成Java对象 * @Title: toBean * @param xmlStr * @param cls xml对应的class类 * @return T xml对应的class类的实例对象 * * 调用的方法实例:PersonBean person=XmlUtil.toBean(xmlStr, PersonBean.class); */ public static <T> T toBean(String xmlStr,Class<T> cls){ //注意:不是new Xstream(); 否则报错:java.lang.NoClassDefFoundError: org/xmlpull/v1/XmlPullParserFactory XStream xstream=new XStream(new DomDriver()); xstream.processAnnotations(cls); T obj=(T)xstream.fromXML(xmlStr); return obj; }
5. 涉及到的生成签名和验签工具类代码
package com.ias.server.pay.util; import java.lang.reflect.Field; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.Set; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.ias.common.utils.bean.ClassUtil; import com.ias.common.utils.collection.ArrayUtils; import com.ias.common.utils.date.TimeUtil; import com.ias.common.utils.encrypt.MD5Util; import com.ias.common.utils.string.StringUtil; import com.ias.server.pay.annotations.Sign; public class WeiXinUtil { private static final Logger log = LoggerFactory.getLogger(WeiXinUtil.class); /** * 微信支付签名 * @author: jiuzhou.hu * @date:2017年3月15日下午12:54:52 * @param obj * @param keyStr * @return */ public static String sign(Object obj, String keyStr) { Map<String, String> fields = new HashMap<>(); for(Field field : obj.getClass().getDeclaredFields()) { Sign sign = field.getAnnotation(Sign.class); if(field.getAnnotation(Sign.class) != null) { fields.put(field.getName(), sign.value()); } } List<String> signs = new ArrayList<>(); for(String key:fields.keySet()) { Object ov = ClassUtil.getFieldValue(obj, key); if(ov != null) { signs.add(fields.get(key) + "=" + ov); } } signs.sort((String s1, String s2) -> s1.compareTo(s2)); signs.add("key=" + keyStr); String _signs = ArrayUtils.toString(signs,'&'); log.debug("未加密的sign串为:{}", _signs); String md5Sign = MD5Util.encode(_signs).toUpperCase(); log.debug("md5加密过的sign串为:{}", md5Sign); return md5Sign; } /** * 微信验签 * @author feng.ye * @date 2018年7月19日 下午1:27:27 * @param map * @param apiKey * @return */ @SuppressWarnings("rawtypes") public static boolean isWechatSign(Map<String, Object> map,String apiKey) { StringBuffer sb = new StringBuffer(); Set es = map.entrySet(); Iterator it = es.iterator(); while (it.hasNext()) { Map.Entry entry = (Map.Entry) it.next(); String k = (String) entry.getKey(); String v = (String) entry.getValue(); if (!"sign".equals(k) && null != v && !"".equals(v) && !"key".equals(k)) { sb.append(k + "=" + v + "&"); } } sb.append("key=" + apiKey); String sign = MD5Util.encode(sb.toString()).toUpperCase(); log.debug("新生成签名为:{}", sign); String validSign = ((String) map.get("sign")).toUpperCase(); log.debug("微信端返回签名为:{}", validSign); if(StringUtil.isNotBlank(validSign) && StringUtil.equals(sign, validSign)) { return true; }else { return false; } } /** * 获取10位时间戳 * @author: jiuzhou.hu * @date:2017年3月15日下午1:17:49 * @return */ public static long timestamp() { return Long.parseLong(String.valueOf(TimeUtil.getSysTimestamp().getTime()).toString().substring(0,10)); } }
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