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
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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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