微信退款之前需要在常量中配置退款地址，退款的地址必须是可以直接访问的。（之前的申请商户平台及在开放平台申请账号不在描述）在调起之前需要下载商户平台上的证书将其放在项目src下。
微信退款回调url ：微信官方建议在提交退款申请后进行退款回调url配置，便于通知退款的结果。配置在微信商户平台-》交易中心-》退款配置栏进行退款结果回调通知配置。配置的url必须为可以直接访问的类似付款成功回调url。
配置成功后在回调的url中处理退款后的结果。微信给返回的参数如下：
对于加密信息req_info的解密步骤如下。
解密过程中需要先到oracle官网下载对应java版本的sercity包，然后将下载后的包中两个jar复制到jdk/jre/lib/security/包下并覆盖原jar.另外需要在项目中引入一个bcprov-jdk15on-158.jar
退款部分代码：
// 构造向微信发送参数的实体类 private Unifiedorder unifiedorder = new Unifiedorder(); // 微信的参数 private WeixinConfigUtils config = new WeixinConfigUtils(); public static final String ALGORITHM = "AES/ECB/PKCS7Padding"; private RefundOrder refundOrder = new RefundOrder(); @Resource private AESDecodeUtil aesDecodeUtil;@Action("weixinRefund") public String weixinRefund() { try { String out_trade_no = getRequest().getParameter("out_trade_no"); String refund_fee = getRequest().getParameter("refund_fee"); aLiPay = aLiPayService.searchALiPayByOutTradeNo(out_trade_no); if (aLiPay != null) { // 参数组 String appid = aLiPay.getApp_id(); String mch_id = config.mch_id; String nonce_str = RandCharsUtils.getRandomString(16); String out_refund_no = UuIdUtils.getUUID(); Integer total_fee = aLiPay.getTotalFee(); // 构造签名 parameters.put("appid", appid); parameters.put("mch_id", mch_id); parameters.put("nonce_str", nonce_str); parameters.put("out_trade_no", out_trade_no); parameters.put("out_refund_no", out_refund_no); parameters.put("total_fee", total_fee); parameters.put("refund_fee", refund_fee); parameters.put("op_user_id", mch_id); String sign = WXSignUtils.createSign("UTF-8", parameters); // 向微信发送xml消息 // Unifiedorder unifiedorder = new Unifiedorder(); unifiedorder.setAppid(appid); unifiedorder.setMch_id(mch_id); unifiedorder.setSign(sign); unifiedorder.setNonce_str(nonce_str); unifiedorder.setOut_trade_no(out_trade_no); unifiedorder.setOut_refund_no(out_refund_no); unifiedorder.setTotal_fee(total_fee); unifiedorder.setRefund_fee(Integer.valueOf(refund_fee)); unifiedorder.setOp_user_id(mch_id); String xmlInfo = HttpXmlUtils.refundXml(unifiedorder); unifiedorder = null; try { CloseableHttpResponse response = HttpUtil.Post( weixinConstant.REFUND_URL, xmlInfo, true); // 输出退款后的信息 String refundXml = EntityUtils.toString(response.getEntity(), "utf-8"); Map<String, String> refundOrderMap = HttpXmlUtils.parseRefundXml(refundXml); if (refundOrderMap.size()>0) { if (refundOrderMap.get("result_code").equals("SUCCESS") && refundOrderMap.get("return_code").equals("SUCCESS")) { refundOrder.setAppid(refundOrderMap.get("appid")); refundOrder.setMch_id(refundOrderMap.get("mch_id")); refundOrder.setTransaction_id(refundOrderMap.get("transaction_id")); refundOrder.setOut_trade_no(refundOrderMap.get("out_trade_no")); refundOrder.setOut_refund_no(refundOrderMap.get("out_refund_no")); refundOrder.setRefund_id(refundOrderMap.get("refund_id")); refundOrder.setRefund_fee(Integer.valueOf(refundOrderMap.get("refund_fee"))); refundOrder.setTatol_fee(Integer.valueOf(refundOrderMap.get("total_fee"))); refundOrder.setRefund_status(WeixinRefundStatusConstant.APPLY_SUCCESS);refundOrderService.saveOrder(refundOrder); msg.put("stateCode", MsgCode.SUCCESS); msg.put("message ", "退款申请成功"); refundOrderService.saveOrder(refundOrder); }else { msg.put("stateCode", MsgCode.ERROR); msg.put("message ", "退款申请失败"); } }else { msg.put("stateCode", MsgCode.ERROR); msg.put("message ", "退款申请失败"); } try { // 关闭流 EntityUtils.consume(response.getEntity()); } finally { response.close(); } } catch (Exception e) { msg.put("stateCode", MsgCode.SYS_ERROR); msg.put("message ", "服务器异常"); } } else { msg.put("stateCode", MsgCode.ERROR); msg.put("message ", "退款申请失败"); } Struts2Utils.renderJson(JSONObject.toJSONString(msg, SerializerFeature.DisableCircularReferenceDetect)); return NONE; } catch (Exception e) { log.error(e.getMessage()); e.printStackTrace(); return "500"; } } /** * 微信退款回调url * */ @Action("refundNotifyUrl") public String refundNotifyUrl() throws IOException { try { Map<String, String> resultMap = JdomParseXmlUtils.getWeixinResult( Struts2Utils.getRequest(), Struts2Utils.getResponse()); if (resultMap.get("return_code").equals("SUCCESS")) { String reqInfo = resultMap.get("req_info"); String result = aesDecodeUtil.decode(reqInfo); Map<String, String> resultMaps = HttpXmlUtils.parseRefundNotifyXml(result); refundOrder = refundOrderService.getOrderByOutRefundNo(resultMaps.get("out_refund_no")); if (resultMaps.get("refund_status").equals("SUCCESS")){ refundOrder.setRefund_status(WeixinRefundStatusConstant.REFUND_SUCCESS); }else if (resultMaps.get("refund_status").equals("CHANGE")) { refundOrder.setRefund_status(WeixinRefundStatusConstant.REFUND_FAIL); }else if (resultMaps.get("refund_status").equals("REFUNDCLOSE")) { refundOrder.setRefund_status(WeixinRefundStatusConstant.REFUND_CLOSED); } refundOrder.setRefund_rew_account(resultMaps.get("refund_recv_account")); System.out.println(resultMaps.get("refund_recv_account")); refundOrderService.updateOrder(refundOrder); refundOrder = null; unifiedorder.setReturn_code("SUCCESS"); } unifiedorder.setReturn_code("SUCCESS"); String refundXml = HttpXmlUtils.refundXml(unifiedorder); Struts2Utils.getResponse().getWriter().write(refundXml); Struts2Utils.getResponse().getWriter().flush(); } catch (Exception e) { log.error(e.getMessage()); e.printStackTrace(); return "500"; } return null;}package com.wellness.platfront.common.weixinutil;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;import java.util.Random;生成随机串/** * nonce_str随即字符串* @author * @date 2017/08/10 */public class RandCharsUtils { private static SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss"); public static String getRandomString(int length) { //length表示生成字符串的长度 String base = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz"; Random random = new Random(); StringBuffer sb = new StringBuffer(); int number = 0; for (int i = 0; i < length; i++) { number = random.nextInt(base.length()); sb.append(base.charAt(number)); } return sb.toString(); } /* * 订单开始交易的时间 */ public static String timeStart(){ return df.format(new Date()); } /* * 订单开始交易的时间 */ public static String timeExpire(){ Calendar now=Calendar.getInstance(); now.add(Calendar.MINUTE,30); return df.format(now.getTimeInMillis()); }}生成签名的类
package com.wellness.platfront.common.weixinutil;import java.util.Iterator;import java.util.Map;import java.util.Set;import java.util.SortedMap;/** * 微信支付签名 * @author * @date 2017/08/10 */public class WXSignUtils { /** * 微信支付签名算法sign * @param characterEncoding * @param parameters * @return */ @SuppressWarnings("rawtypes") public static String createSign(String characterEncoding,SortedMap<Object,Object> parameters){ StringBuffer sb = new StringBuffer(); Set es = parameters.entrySet();//所有参与传参的参数按照accsii排序（升序） Iterator it = es.iterator(); while(it.hasNext()) { Map.Entry entry = (Map.Entry)it.next(); String k = (String)entry.getKey(); Object v = entry.getValue(); if(null != v && !"".equals(v) && !"sign".equals(k) && !"key".equals(k)) { sb.append(k + "=" + v + "&"); } } sb.append("key=" + weixinConstant.KEY); String sign = MD5Util.MD5Encode(sb.toString(), characterEncoding).toUpperCase(); return sign; }}向微信发送消息的类
package com.wellness.platfront.common.weixinutil;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.OutputStreamWriter;import java.io.StringReader;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;import java.util.HashMap;import java.util.List;import java.util.Map;import javax.annotation.Resource;import javax.net.ssl.HttpsURLConnection;import org.jdom.JDOMException;import org.jdom.input.SAXBuilder;import org.xml.sax.InputSource;import com.thoughtworks.xstream.XStream;import com.thoughtworks.xstream.io.xml.DomDriver;import com.thoughtworks.xstream.io.xml.XmlFriendlyNameCoder;import com.wellness.platfront.business.wechat.service.RefundOrderService;import com.wellness.platfront.entity.weixin.Transfers;import com.wellness.platfront.entity.weixin.Unifiedorder;/** * post提交xml格式的参数 * @author * @date 2017/08/10 */public class HttpXmlUtils { @Resource private RefundOrderService refundOrderService; public static XStream xStream = new XStream(new DomDriver("UTF-8", new XmlFriendlyNameCoder("-_", "_"))); /** * 开始post提交参数到接口 * 并接受返回 * @param url * @param xml * @param method * @param contentType * @return */ public static String xmlHttpProxy(String url,String xml,String method,String contentType){ InputStream is = null; OutputStreamWriter os = null; try { URL _url = new URL(url); HttpURLConnection conn = (HttpURLConnection) _url.openConnection(); conn.setDoInput(true); conn.setDoOutput(true); conn.setRequestProperty("Content-type", "text/xml"); conn.setRequestProperty("Pragma:", "no-cache"); conn.setRequestProperty("Cache-Control", "no-cache"); conn.setRequestMethod("POST"); os = new OutputStreamWriter(conn.getOutputStream()); os.write(new String(xml.getBytes(contentType))); os.flush(); //返回值 is = conn.getInputStream(); return getContent(is, "utf-8"); } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally{ try { if(os!=null){os.close();} if(is!=null){is.close();} } catch (IOException e) { e.printStackTrace(); } } return null; } /** * 解析返回的值 * @param is * @param charset * @return */ public static String getContent(InputStream is, String charset) { String pageString = null; InputStreamReader isr = null; BufferedReader br = null; StringBuffer sb = null; try { isr = new InputStreamReader(is, charset); br = new BufferedReader(isr); sb = new StringBuffer(); String line = null; while ((line = br.readLine()) != null) { sb.append(line + "/n"); } pageString = sb.toString(); } catch (Exception e) { e.printStackTrace(); } finally { try { if (is != null){ is.close(); } if(isr!=null){ isr.close(); } if(br!=null){ br.close(); } } catch (IOException e) { e.printStackTrace(); } sb = null; } return pageString; } /** * 解析申请退款之后微信返回的值并进行存库操作 * @throws IOException * @throws JDOMException */ public static Map<String, String> parseRefundXml(String refundXml) throws JDOMException, IOException{ ParseXMLUtils.jdomParseXml(refundXml); StringReader read = new StringReader(refundXml); // 创建新的输入源SAX 解析器将使用 InputSource 对象来确定如何读取 XML 输入 InputSource source = new InputSource(read); // 创建一个新的SAXBuilder SAXBuilder sb = new SAXBuilder(); // 通过输入源构造一个Document org.jdom.Document doc; doc = (org.jdom.Document) sb.build(source); org.jdom.Element root = doc.getRootElement();// 指向根节点 List<org.jdom.Element> list = root.getChildren(); Map<String, String> refundOrderMap = new HashMap<String, String>(); if(list!=null&&list.size()>0){ for (org.jdom.Element element : list) { refundOrderMap.put(element.getName(), element.getText()); } return refundOrderMap; } return null; } /** * 解析申请退款之后微信退款回调返回的字符串中内容 * @throws IOException * @throws JDOMException */ public static Map<String, String> parseRefundNotifyXml(String refundXml) throws JDOMException, IOException{ ParseXMLUtils.jdomParseXml(refundXml); StringReader read = new StringReader(refundXml); // 创建新的输入源SAX 解析器将使用 InputSource 对象来确定如何读取 XML 输入 InputSource source = new InputSource(read); // 创建一个新的SAXBuilder SAXBuilder sb = new SAXBuilder(); // 通过输入源构造一个Document org.jdom.Document doc; doc = (org.jdom.Document) sb.build(source); org.jdom.Element root = doc.getRootElement();// 指向根节点 List<org.jdom.Element> list = root.getChildren(); Map<String, String> resultMap = new HashMap<>(); if(list!=null&&list.size()>0){ for (org.jdom.Element element : list){ resultMap.put(element.getName(), element.getText()); } return resultMap; } return null; } /** * h5支付时 解析返回的值并返回prepareid * @throws IOException * @throws JDOMException */ public static Map<String, String> getUrl(Unifiedorder unifiedorder) throws JDOMException, IOException{ String xmlInfo = HttpXmlUtils.xmlH5Info(unifiedorder); String wxUrl = weixinConstant.URL; String method = "POST"; String weixinPost = HttpXmlUtils.httpsRequest(wxUrl, method, xmlInfo).toString(); ParseXMLUtils.jdomParseXml(weixinPost); StringReader read = new StringReader(weixinPost); // 创建新的输入源SAX 解析器将使用 InputSource 对象来确定如何读取 XML 输入 InputSource source = new InputSource(read); // 创建一个新的SAXBuilder SAXBuilder sb = new SAXBuilder(); // 通过输入源构造一个Document org.jdom.Document doc; doc = (org.jdom.Document) sb.build(source); org.jdom.Element root = doc.getRootElement();// 指向根节点 List<org.jdom.Element> list = root.getChildren(); String prepayId =null; Map<String, String> msg = new HashMap<String, String>(); if(list!=null&&list.size()>0){ for (org.jdom.Element element : list) { msg.put(element.getName(), element.getText()); } } return msg; } /** * 解析返回的值并返回prepareid * @throws IOException * @throws JDOMException */ public static String getPrepareId(Unifiedorder unifiedorder) throws JDOMException, IOException{ String xmlInfo = HttpXmlUtils.xmlInfo(unifiedorder); String wxUrl = weixinConstant.URL; String method = "POST"; String weixinPost = HttpXmlUtils.httpsRequest(wxUrl, method, xmlInfo).toString(); ParseXMLUtils.jdomParseXml(weixinPost); StringReader read = new StringReader(weixinPost); // 创建新的输入源SAX 解析器将使用 InputSource 对象来确定如何读取 XML 输入 InputSource source = new InputSource(read); // 创建一个新的SAXBuilder SAXBuilder sb = new SAXBuilder(); // 通过输入源构造一个Document org.jdom.Document doc; doc = (org.jdom.Document) sb.build(source); org.jdom.Element root = doc.getRootElement();// 指向根节点 List<org.jdom.Element> list = root.getChildren(); String prepayId =null; if(list!=null&&list.size()>0){ for (org.jdom.Element element : list) { if ( "prepay_id".equals(element.getName())) { prepayId= element.getText(); break; } } } return prepayId; } /** * 向微信发送企业付款请求并解析返回结果 * @throws IOException * @throws JDOMException */ public static Map<String, String> getTransfersMap(Transfers transfers) throws JDOMException, IOException{ String xmlInfo = HttpXmlUtils.xmlTransfer(transfers); String wxUrl = weixinConstant.WITHDRAW_URL; String method = "POST"; String weixinPost = HttpXmlUtils.httpsRequest(wxUrl, method, xmlInfo).toString(); ParseXMLUtils.jdomParseXml(weixinPost); StringReader read = new StringReader(weixinPost); // 创建新的输入源SAX 解析器将使用 InputSource 对象来确定如何读取 XML 输入 InputSource source = new InputSource(read); // 创建一个新的SAXBuilder SAXBuilder sb = new SAXBuilder(); // 通过输入源构造一个Document org.jdom.Document doc; doc = (org.jdom.Document) sb.build(source); org.jdom.Element root = doc.getRootElement();// 指向根节点 List<org.jdom.Element> list = root.getChildren(); Map<String, String> transferMap=new HashMap<>(); if(list!=null&&list.size()>0){ for (org.jdom.Element element : list) { transferMap.put(element.getName(), element.getText()); } } return transferMap; } /** * 构造退款xml参数 * @param xml * @return */ public static String refundXml(Unifiedorder unifiedorder){ xStream.autodetectAnnotations(true); xStream.alias("xml", Unifiedorder.class); return xStream.toXML(unifiedorder); } /** * 构造企业付款xml参数 * @param xml * @return */ public static String transferXml(Transfers transfers){ xStream.autodetectAnnotations(true); xStream.alias("xml", Transfers.class); return xStream.toXML(transfers); } /** * 构造xml参数 * @param xml * @return */ public static String xmlInfo(Unifiedorder unifiedorder){ if(unifiedorder!=null){ StringBuffer bf = new StringBuffer(); bf.append("<xml>"); bf.append("<appid><![CDATA["); bf.append(unifiedorder.getAppid()); bf.append("]]></appid>"); bf.append("<mch_id><![CDATA["); bf.append(unifiedorder.getMch_id()); bf.append("]]></mch_id>"); bf.append("<nonce_str><![CDATA["); bf.append(unifiedorder.getNonce_str()); bf.append("]]></nonce_str>"); bf.append("<sign><![CDATA["); bf.append(unifiedorder.getSign()); bf.append("]]></sign>"); bf.append("<body><![CDATA["); bf.append(unifiedorder.getBody()); bf.append("]]></body>"); bf.append("<detail><![CDATA["); bf.append(unifiedorder.getDetail()); bf.append("]]></detail>"); bf.append("<attach><![CDATA["); bf.append(unifiedorder.getAttach()); bf.append("]]></attach>"); bf.append("<out_trade_no><![CDATA["); bf.append(unifiedorder.getOut_trade_no()); bf.append("]]></out_trade_no>"); bf.append("<total_fee><![CDATA["); bf.append(unifiedorder.getTotal_fee()); bf.append("]]></total_fee>"); bf.append("<spbill_create_ip><![CDATA["); bf.append(unifiedorder.getSpbill_create_ip()); bf.append("]]></spbill_create_ip>"); bf.append("<time_start><![CDATA["); bf.append(unifiedorder.getTime_start()); bf.append("]]></time_start>"); bf.append("<time_expire><![CDATA["); bf.append(unifiedorder.getTime_expire()); bf.append("]]></time_expire>"); bf.append("<notify_url><![CDATA["); bf.append(unifiedorder.getNotify_url()); bf.append("]]></notify_url>"); bf.append("<trade_type><![CDATA["); bf.append(unifiedorder.getTrade_type()); bf.append("]]></trade_type>"); bf.append("</xml>"); return bf.toString(); } return ""; } /** * 构造xml参数 * @param xml * @return */ public static String xmlH5Info(Unifiedorder unifiedorder){ if(unifiedorder!=null){ StringBuffer bf = new StringBuffer(); bf.append("<xml>"); bf.append("<appid><![CDATA["); bf.append(unifiedorder.getAppid()); bf.append("]]></appid>"); bf.append("<mch_id><![CDATA["); bf.append(unifiedorder.getMch_id()); bf.append("]]></mch_id>"); bf.append("<nonce_str><![CDATA["); bf.append(unifiedorder.getNonce_str()); bf.append("]]></nonce_str>"); bf.append("<sign><![CDATA["); bf.append(unifiedorder.getSign()); bf.append("]]></sign>"); bf.append("<body><![CDATA["); bf.append(unifiedorder.getBody()); bf.append("]]></body>"); bf.append("<attach><![CDATA["); bf.append(unifiedorder.getAttach()); bf.append("]]></attach>"); bf.append("<out_trade_no><![CDATA["); bf.append(unifiedorder.getOut_trade_no()); bf.append("]]></out_trade_no>"); bf.append("<total_fee><![CDATA["); bf.append(unifiedorder.getTotal_fee()); bf.append("]]></total_fee>"); bf.append("<spbill_create_ip><![CDATA["); bf.append(unifiedorder.getSpbill_create_ip()); bf.append("]]></spbill_create_ip>"); bf.append("<notify_url><![CDATA["); bf.append(unifiedorder.getNotify_url()); bf.append("]]></notify_url>"); bf.append("<trade_type><![CDATA["); bf.append(unifiedorder.getTrade_type()); bf.append("]]></trade_type>"); bf.append("<scene_info><![CDATA["); bf.append(unifiedorder.getScene_info()); bf.append("]]></scene_info>"); bf.append("</xml>"); return bf.toString(); } return ""; } /** * 构造退款xml参数 * @param xml * @return */ public static String xmlTransfer(Transfers transfers){ if(transfers!=null){ StringBuffer bf = new StringBuffer(); bf.append("<xml>"); bf.append("<mch_appid><![CDATA["); bf.append(transfers.getMch_appid()); bf.append("]]></mch_appid>"); bf.append("<mchid><![CDATA["); bf.append(transfers.getMchid()); bf.append("]]></mchid>"); bf.append("<nonce_str><![CDATA["); bf.append(transfers.getNonce_str()); bf.append("]]></nonce_str>"); bf.append("<sign><![CDATA["); bf.append(transfers.getSign()); bf.append("]]></sign>"); bf.append("<partner_trade_no><![CDATA["); bf.append(transfers.getPartner_trade_no()); bf.append("]]></partner_trade_no>"); bf.append("<openid><![CDATA["); bf.append(transfers.getOpenid()); bf.append("]]></openid>"); bf.append("<check_name><![CDATA["); bf.append(transfers.getCheck_name()); bf.append("]]></check_name>"); bf.append("<amount><![CDATA["); bf.append(transfers.getAmount()); bf.append("]]></amount>"); bf.append("<desc><![CDATA["); bf.append(transfers.getDesc()); bf.append("]]></desc>"); bf.append("<spbill_create_ip><![CDATA["); bf.append(transfers.getSpbill_create_ip()); bf.append("]]></spbill_create_ip>"); bf.append("</xml>"); return bf.toString(); } return ""; } /** * post请求并得到返回结果 * @param requestUrl * @param requestMethod * @param output * @return */ public static String httpsRequest(String requestUrl, String requestMethod, String output) { try{ URL url = new URL(requestUrl); HttpsURLConnection connection = (HttpsURLConnection) url.openConnection(); connection.setDoOutput(true); connection.setDoInput(true); connection.setUseCaches(false); connection.setRequestMethod(requestMethod); if (null != output) { OutputStream outputStream = connection.getOutputStream(); outputStream.write(output.getBytes("UTF-8")); outputStream.close(); } // 从输入流读取返回内容 InputStream inputStream = connection.getInputStream(); InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8"); BufferedReader bufferedReader = new BufferedReader(inputStreamReader); String str = null; StringBuffer buffer = new StringBuffer(); while ((str = bufferedReader.readLine()) != null) { buffer.append(str); } bufferedReader.close(); inputStreamReader.close(); inputStream.close(); inputStream = null; connection.disconnect(); return buffer.toString(); }catch(Exception ex){ ex.printStackTrace(); } return ""; }}加载证书
package com.wellness.platfront.common.weixinutil;import org.apache.http.client.methods.CloseableHttpResponse;import org.apache.http.client.methods.HttpPost;import org.apache.http.entity.StringEntity;import org.apache.http.impl.client.HttpClients;public class HttpUtil { /** * 发送post请求 * * @param url * 请求地址 * @param outputEntity * 发送内容 * @param isLoadCert * 是否加载证书 */ public static CloseableHttpResponse Post(String url, String outputEntity, boolean isLoadCert) throws Exception { HttpPost httpPost = new HttpPost(url); // 得指明使用UTF-8编码，否则到API服务器XML的中文不能被成功识别 httpPost.addHeader("Content-Type", "text/xml"); httpPost.setEntity(new StringEntity(outputEntity, "UTF-8")); if (isLoadCert) { // 加载含有证书的http请求 return HttpClients.custom().setSSLSocketFactory(CertUtil.initCert()).build().execute(httpPost); } else { return HttpClients.custom().build().execute(httpPost); } }}加载证书的类
package com.wellness.platfront.common.weixinutil;import java.io.File;import java.io.FileInputStream;import java.security.KeyStore;import javax.net.ssl.SSLContext;import org.apache.http.conn.ssl.SSLConnectionSocketFactory;import org.apache.http.ssl.SSLContexts;/** * 加载证书的类 * @author * @since 2017/08/16 */@SuppressWarnings("deprecation")public class CertUtil { private static WeixinConfigUtils config = new WeixinConfigUtils(); /** * 加载证书 */ public static SSLConnectionSocketFactory initCert() throws Exception { FileInputStream instream = null; KeyStore keyStore = KeyStore.getInstance("PKCS12"); instream = new FileInputStream(new File(weixinConstant.PATH)); keyStore.load(instream, config.mch_id.toCharArray()); if (null != instream) { instream.close(); } SSLContext sslcontext = SSLContexts.custom().loadKeyMaterial(keyStore,config.mch_id.toCharArray()).build(); SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslcontext, new String[]{"TLSv1"}, null, SSLConnectionSocketFactory.BROWSER_COMPATIBLE_HOSTNAME_VERIFIER); return sslsf; }}解密微信退款中返回相关信息的字符串
package com.wellness.platfront.common.weixinutil;import java.security.Security;import javax.crypto.Cipher;import javax.crypto.SecretKey;import javax.crypto.spec.SecretKeySpec;import org.apache.commons.codec.binary.Base64;import org.bouncycastle.jce.provider.BouncyCastleProvider;import org.springframework.stereotype.Service;import com.wellness.platfront.common.wechat.utils.MD5;/** * 解密微信退款中返回相关信息的字符串 * @author * @since 2017/09/05 */@Servicepublic class AESDecodeUtil { public static final String ALGORITHM = "AES/ECB/PKCS7Padding"; public String decode(String reqInfo) throws Exception{ try { byte[] decodeBase64 = Base64.decodeBase64(reqInfo); String md5Key = MD5.MD5Encode(weixinConstant.KEY); Security.addProvider(new BouncyCastleProvider()); Cipher cipher = Cipher.getInstance(ALGORITHM); SecretKey keySpec = new SecretKeySpec(md5Key.getBytes(), "AES"); //生成加密解密需要的Key cipher.init(Cipher.DECRYPT_MODE, keySpec); byte[] decoded = cipher.doFinal(decodeBase64); String result = new String(decoded, "UTF-8"); return result; } catch (Exception e) { e.printStackTrace(); } return null; }}微信解析xml：带有CDATA格式的
package com.wellness.platfront.common.weixinutil;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.PrintWriter;import java.io.StringReader;import java.util.HashMap;import java.util.List;import java.util.Map;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.jdom.Document;import org.jdom.Element;import org.jdom.JDOMException;import org.jdom.input.SAXBuilder;import org.xml.sax.InputSource;import com.wellness.platfront.entity.weixin.UnifiedorderResult;import com.wellness.platfront.entity.weixin.WXPayResult;/** * 微信解析xml：带有CDATA格式的* @author * @date 2017/08/10 */public class JdomParseXmlUtils { /** * 1、统一下单获取微信返回 * 解析的时候自动去掉CDMA * @param xml */ @SuppressWarnings("unchecked") public static UnifiedorderResult getUnifiedorderResult(String xml){ UnifiedorderResult unifieorderResult = new UnifiedorderResult(); try { StringReader read = new StringReader(xml); // 创建新的输入源SAX 解析器将使用 InputSource 对象来确定如何读取 XML 输入 InputSource source = new InputSource(read); // 创建一个新的SAXBuilder SAXBuilder sb = new SAXBuilder(); // 通过输入源构造一个Document Document doc; doc = (Document) sb.build(source); Element root = doc.getRootElement();// 指向根节点 List<Element> list = root.getChildren(); if(list!=null&&list.size()>0){ for (Element element : list) { System.out.println("key是："+element.getName()+"，值是："+element.getText()); if("return_code".equals(element.getName())){ unifieorderResult.setReturn_code(element.getText()); } if("return_msg".equals(element.getName())){ unifieorderResult.setReturn_msg(element.getText()); } if("appid".equals(element.getName())){ unifieorderResult.setAppid(element.getText()); } if("mch_id".equals(element.getName())){ unifieorderResult.setMch_id(element.getText()); } if("nonce_str".equals(element.getName())){ unifieorderResult.setNonce_str(element.getText()); } if("sign".equals(element.getName())){ unifieorderResult.setSign(element.getText()); } if("result_code".equals(element.getName())){ unifieorderResult.setResult_code(element.getText()); } if("prepay_id".equals(element.getName())){ unifieorderResult.setPrepay_id(element.getText()); } if("trade_type".equals(element.getName())){ unifieorderResult.setTrade_type(element.getText()); } } } } catch (JDOMException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); }catch (Exception e) { e.printStackTrace(); } return unifieorderResult; } /** * 获取微信回调的参数并将xml解析成map * 解析的时候自动去掉CDMA * @param xml */ @SuppressWarnings("unchecked") public static Map<String, String> getWeixinResult(HttpServletRequest request,HttpServletResponse response){ Map<String, String> resultMap = new HashMap<>(); try { PrintWriter writer = response.getWriter(); InputStream inStream = request.getInputStream(); ByteArrayOutputStream outSteam = new ByteArrayOutputStream(); byte[] buffer = new byte[1024]; int len = 0; while ((len = inStream.read(buffer)) != -1) { outSteam.write(buffer, 0, len); } outSteam.close(); inStream.close(); String result = new String(outSteam.toByteArray(), "utf-8"); StringReader read = new StringReader(result); InputSource source = new InputSource(read); // 创建一个新的SAXBuilder SAXBuilder sb = new SAXBuilder(); // 通过输入源构造一个Document Document doc; doc = (Document) sb.build(source); Element root = doc.getRootElement();// 指向根节点 List<Element> list = root.getChildren(); if(list!=null&&list.size()>0){ for (Element element : list) { resultMap.put(element.getName(), element.getText()); } } return resultMap; } catch (Exception e) { e.printStackTrace(); } return null; } /** * 2、微信回调后参数解析 * 解析的时候自动去掉CDMA * @param xml */ @SuppressWarnings("unchecked") public static WXPayResult getWXPayResult(String xml){ WXPayResult wXPayResult = new WXPayResult(); try { StringReader read = new StringReader(xml); // 创建新的输入源SAX 解析器将使用 InputSource 对象来确定如何读取 XML 输入 InputSource source = new InputSource(read); // 创建一个新的SAXBuilder SAXBuilder sb = new SAXBuilder(); // 通过输入源构造一个Document Document doc; doc = (Document) sb.build(source); Element root = doc.getRootElement();// 指向根节点 List<Element> list = root.getChildren(); if(list!=null&&list.size()>0){ for (Element element : list) { if("return_code".equals(element.getName())){ wXPayResult.setReturn_code(element.getText()); } if("return_msg".equals(element.getName())){ wXPayResult.setReturn_msg(element.getText()); } if("appid".equals(element.getName())){ wXPayResult.setAppid(element.getText()); } if("mch_id".equals(element.getName())){ wXPayResult.setMch_id(element.getText()); } if("nonce_str".equals(element.getName())){ wXPayResult.setNonce_str(element.getText()); } if("sign".equals(element.getName())){ wXPayResult.setSign(element.getText()); } if("result_code".equals(element.getName())){ wXPayResult.setResult_code(element.getText()); } if("return_msg".equals(element.getName())){ wXPayResult.setReturn_msg(element.getText()); } if("return_msg".equals(element.getName())){ wXPayResult.setReturn_msg(element.getText()); } if("return_msg".equals(element.getName())){ wXPayResult.setReturn_msg(element.getText()); } if("return_msg".equals(element.getName())){ wXPayResult.setReturn_msg(element.getText()); } if("return_msg".equals(element.getName())){ wXPayResult.setReturn_msg(element.getText()); } if("return_msg".equals(element.getName())){ wXPayResult.setReturn_msg(element.getText()); } if("return_msg".equals(element.getName())){ wXPayResult.setReturn_msg(element.getText()); } if("return_msg".equals(element.getName())){ wXPayResult.setReturn_msg(element.getText()); } } } } catch (JDOMException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); }catch (Exception e) { e.printStackTrace(); } return wXPayResult; }}package com.wellness.platfront.common.weixinutil;/** * dom解析 * @author * @date 2017/08/10 */import java.io.IOException;import java.io.StringReader;import java.util.Iterator;import java.util.List;import org.apache.commons.lang.StringUtils;import org.dom4j.Document;import org.dom4j.DocumentException;import org.dom4j.DocumentHelper;import org.dom4j.Element;import org.dom4j.io.SAXReader;import org.jdom.JDOMException;import org.jdom.input.SAXBuilder;import org.xml.sax.InputSource;public class ParseXMLUtils { /** * 1、DOM解析 */ @SuppressWarnings("rawtypes") public static void beginXMLParse(String xml){ Document doc = null; try { doc = DocumentHelper.parseText(xml); // 将字符串转为XML Element rootElt = doc.getRootElement(); // 获取根节点smsReport System.out.println("根节点是："+rootElt.getName()); Iterator iters = rootElt.elementIterator("sendResp"); // 获取根节点下的子节点sms while (iters.hasNext()) { Element recordEle1 = (Element) iters.next(); Iterator iter = recordEle1.elementIterator("sms"); while (iter.hasNext()) { Element recordEle = (Element) iter.next(); String phone = recordEle.elementTextTrim("phone"); // 拿到sms节点下的子节点stat值 String smsID = recordEle.elementTextTrim("smsID"); // 拿到sms节点下的子节点stat值 System.out.println(phone+":"+smsID); } } } catch (DocumentException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } /** * 2、DOM4j解析XML（支持xpath） * 解析的时候自动去掉CDMA * @param xml */ public static void xpathParseXml(String xml){ try { StringReader read = new StringReader(xml); SAXReader saxReader = new SAXReader(); Document doc = saxReader.read(read); String xpath ="/xml/appid"; System.out.print(doc.selectSingleNode(xpath).getText()); } catch (DocumentException e) { e.printStackTrace(); } } /** * 3、JDOM解析XML * 解析的时候自动去掉CDMA * @param xml */ @SuppressWarnings("unchecked") public static void jdomParseXml(String xml){ try { StringReader read = new StringReader(xml); // 创建新的输入源SAX 解析器将使用 InputSource 对象来确定如何读取 XML 输入 InputSource source = new InputSource(read); // 创建一个新的SAXBuilder SAXBuilder sb = new SAXBuilder(); // 通过输入源构造一个Document org.jdom.Document doc; doc = (org.jdom.Document) sb.build(source); org.jdom.Element root = doc.getRootElement();// 指向根节点 List<org.jdom.Element> list = root.getChildren(); if(list!=null&&list.size()>0){ for (org.jdom.Element element : list) { /*try{ methodName = element.getName(); Method m = v.getClass().getMethod("set" + methodName, new Class[] { String.class }); if(parseInt(methodName)){ m.invoke(v, new Object[] { Integer.parseInt(element.getText()) }); }else{ m.invoke(v, new Object[] { element.getText() }); } }catch(Exception ex){ ex.printStackTrace(); }*/ } } } catch (JDOMException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); }catch (Exception e) { e.printStackTrace(); } } public static boolean parseInt(String key){ if(!StringUtils.isEmpty(key)){ if(key.equals("total_fee")||key.equals("cash_fee")||key.equals("coupon_fee")||key.equals("coupon_count")||key.equals("coupon_fee_0")){ return true; } } return false; }}微信支付相关的常量
package com.wellness.platfront.common.weixinutil;/** * 微信支付相关的常量 * @author yangfuren * @since 2017/08/16 */public class weixinConstant { /** * 微信支付API秘钥 */ public static final String KEY = "eAO9gDBK7NjqkYEvRFB82CspUTINiWnD"; /** * url */ public static final String URL = "https://api.mch.weixin.qq.com/pay/unifiedorder"; /** * 退款url */ public static final String REFUND_URL = "https://api.mch.weixin.qq.com/secapi/pay/refund"; /** * 证书地址 */ public static final String PATH =""; /** * 付款url */ public static final String WITHDRAW_URL="https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers";}微信退款状态常量
package com.wellness.platfront.common.weixinutil;/** * 微信退款状态常量 * @author * @since 2017/09/04 */public class WeixinRefundStatusConstant { //退款申请成功 public static final String APPLY_SUCCESS="退款申请成功"; //退款申请失败 public static final String APPLY_FAIL="退款申请失败"; //退款成功 public static final String REFUND_SUCCESS="退款成功"; //退款异常 public static final String REFUND_FAIL="退款异常"; //退款关闭 public static final String REFUND_CLOSED="退款关闭";}微信退款订单信息
package com.wellness.platfront.entity.weixin;import java.io.Serializable;import java.util.Date;import javax.persistence.Column;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.GenerationType;import javax.persistence.Id;import javax.persistence.Table;/** * 微信退款订单信息 * @author * */@Entity@Table(name = "weixin_refund_order")public class RefundOrder implements Serializable{ private static final long serialVersionUID = 1L; //退款订单id public Integer refundOrderId; //微信公众账号 public String appid; //微信商户号 public String mch_id; //微信订单号 public String transaction_id; //商户订单号 public String out_trade_no; //商户退款单号 public String out_refund_no; //微信退款单号 public String refund_id; //退款金额 public Integer refund_fee; //订单总价格 public Integer tatol_fee; //退款发起时间 public Date create_time; //退款状态 申请退款中 申请退款失败 退款成功 退款异常 退款关闭 public String refund_status; //退款退还账户 public String refund_rew_account; //退款完成时间 public Date end_time; //订单退还方式 public String refundType; @Id @GeneratedValue(strategy = GenerationType.AUTO) @Column(name = "refund_order_id", nullable = false) public Integer getRefundOrderId() { return refundOrderId; } public void setRefundOrderId(Integer refundOrderId) { this.refundOrderId = refundOrderId; } @Column(name = "appid", nullable = false) public String getAppid() { return appid; } public void setAppid(String appid) { this.appid = appid; } @Column(name = "mch_id", nullable = false) public String getMch_id() { return mch_id; } public void setMch_id(String mch_id) { this.mch_id = mch_id; } @Column(name = "transaction_id", nullable = false) public String getTransaction_id() { return transaction_id; } public void setTransaction_id(String transaction_id) { this.transaction_id = transaction_id; } @Column(name = "out_trade_no", nullable = false) public String getOut_trade_no() { return out_trade_no; } public void setOut_trade_no(String out_trade_no) { this.out_trade_no = out_trade_no; } @Column(name = "out_refund_no", nullable = false) public String getOut_refund_no() { return out_refund_no; } public void setOut_refund_no(String out_refund_no) { this.out_refund_no = out_refund_no; } @Column(name = "refund_id", nullable = false) public String getRefund_id() { return refund_id; } public void setRefund_id(String refund_id) { this.refund_id = refund_id; } @Column(name = "refund_fee", nullable = false) public Integer getRefund_fee() { return refund_fee; } public void setRefund_fee(Integer refund_fee) { this.refund_fee = refund_fee; } @Column(name = "tatol_fee", nullable = false) public Integer getTatol_fee() { return tatol_fee; } public void setTatol_fee(Integer tatol_fee) { this.tatol_fee = tatol_fee; } @Column(name = "create_time", nullable = false) public Date getCreate_time() { return create_time; } public void setCreate_time(Date create_time) { this.create_time = create_time; } @Column(name = "refund_status", nullable = false) public String getRefund_status() { return refund_status; } public void setRefund_status(String refund_status) { this.refund_status = refund_status; } @Column(name = "refund_rew_account") public String getRefund_rew_account() { return refund_rew_account; } public void setRefund_rew_account(String refund_rew_account) { this.refund_rew_account = refund_rew_account; } @Column(name = "end_time") public Date getEnd_time() { return end_time; } public void setEnd_time(Date end_time) { this.end_time = end_time; } @Column(name = "refund_type") public String getRefundType() { return refundType; } public void setRefundType(String refundType) { this.refundType = refundType; }}这个实体类中参数和微信官方需要的参数一致
package com.wellness.platfront.entity.weixin;import java.io.Serializable;import com.wellness.platfront.entity.member.Member;/** * 统一下单提交为微信的参数 * @author * @date 2017年08月11日 */public class Unifiedorder implements Serializable{ private static final long serialVersionUID = 1L; //微信支付表id private Integer weixinId; //微信分配的公众账号ID（企业号corpid即为此appId） private String appid; //商户id private String mch_id; //终端设备号(门店号或收银设备ID)，注意：PC网页或公众号内支付请传"WEB" private String device_info; //随机字符串:数字+大写字母的组合，32位 private String nonce_str; //签名 private String sign; //商品或支付单简要描述 private String body; //商品名称明细列表 private String detail; //附加参数（例如：用于区别本商户不同的分店） private String attach; //商户系统内部的订单号 private String out_trade_no; //货币类型:符合ISO 4217标准的三位字母代码，默认人民币：CNY private String fee_type; //总金额 private int total_fee; //APP和网页支付提交[用户端ip]，Native支付填调用微信支付API的机器IP。 private String spbill_create_ip; //订单生成时间，格式为yyyyMMddHHmmss， private String time_start; //订单失效时间，格式为yyyyMMddHHmmss，最短失效时间间隔必须大于5分钟[支付宝是30分钟，同样30分钟] private String time_expire; //商品标记，代金券或立减优惠功能的参数 private String goods_tag; //接收微信支付异步通知回调地址 private String notify_url; //交易类型:JSAPI，NATIVE，APP h5为 MWEB private String trade_type; //trade_type=NATIVE，此参数必传。此id为二维码中包含的商品ID，商户自行定义。 private String product_id; //no_credit--指定不能使用信用卡支付 private String limit_pay; //trade_type=JSAPI，此参数必传，用户在商户appid下的唯一标识 private String openid; //商户内部自己的退款单号 private String out_refund_no; //退款总金额单位为分 private int refund_fee; //操作员的id默认为mch_id private String op_user_id; //微信官方提供的订单号 private String prepayid; //记录所对应的member private Member member; //返回给微信的状态码（用于支付回调时） public String return_code; //微信h5支付时候的场景信息官方的信息模板 {"h5_info"://h5支付固定传"h5_info" //{"type":"",//场景类型 "wap_url":"",//WAP网站URL地址"wap_name": ""//WAP 网站名}} public String scene_info; public String getScene_info() { return scene_info; } public void setScene_info(String scene_info) { this.scene_info = scene_info; } public String getReturn_code() { return return_code; } public void setReturn_code(String return_code) { this.return_code = return_code; } public String getAppid() { return appid; } public String getMch_id() { return mch_id; } public String getDevice_info() { return device_info; } public String getNonce_str() { return nonce_str; } public String getSign() { return sign; } public String getBody() { return body; } public String getDetail() { return detail; } public String getAttach() { return attach; } public String getOut_trade_no() { return out_trade_no; } public String getFee_type() { return fee_type; } public int getTotal_fee() { return total_fee; } public String getSpbill_create_ip() { return spbill_create_ip; } public String getTime_start() { return time_start; } public String getTime_expire() { return time_expire; } public String getGoods_tag() { return goods_tag; } public String getNotify_url() { return notify_url; } public String getTrade_type() { return trade_type; } public String getProduct_id() { return product_id; } public String getLimit_pay() { return limit_pay; } public String getOpenid() { return openid; } public void setAppid(String appid) { this.appid = appid; } public void setMch_id(String mch_id) { this.mch_id = mch_id; } public void setDevice_info(String device_info) { this.device_info = device_info; } public void setNonce_str(String nonce_str) { this.nonce_str = nonce_str; } public void setSign(String sign) { this.sign = sign; } public void setBody(String body) { this.body = body; } public void setDetail(String detail) { this.detail = detail; } public void setAttach(String attach) { this.attach = attach; } public void setOut_trade_no(String out_trade_no) { this.out_trade_no = out_trade_no; } public void setFee_type(String fee_type) { this.fee_type = fee_type; } public void setTotal_fee(int total_fee) { this.total_fee = total_fee; } public void setSpbill_create_ip(String spbill_create_ip) { this.spbill_create_ip = spbill_create_ip; } public void setTime_start(String time_start) { this.time_start = time_start; } public void setTime_expire(String time_expire) { this.time_expire = time_expire; } public void setGoods_tag(String goods_tag) { this.goods_tag = goods_tag; } public void setNotify_url(String notify_url) { this.notify_url = notify_url; } public void setTrade_type(String trade_type) { this.trade_type = trade_type; } public void setProduct_id(String product_id) { this.product_id = product_id; } public void setLimit_pay(String limit_pay) { this.limit_pay = limit_pay; } public void setOpenid(String openid) { this.openid = openid; } public String getOut_refund_no() { return out_refund_no; } public void setOut_refund_no(String out_refund_no) { this.out_refund_no = out_refund_no; } public int getRefund_fee() { return refund_fee; } public void setRefund_fee(int refund_fee) { this.refund_fee = refund_fee; } public Integer getWeixinId() { return weixinId; } public void setWeixinId(Integer weixinId) { this.weixinId = weixinId; } public Member getMember() { return member; } public void setMember(Member member) { this.member = member; } public String getPrepayid() { return prepayid; } public void setPrepayid(String prepayid) { this.prepayid = prepayid; } public String getOp_user_id() { return op_user_id; } public void setOp_user_id(String op_user_id) { this.op_user_id = op_user_id; }}统一下单微信返回的参数组（xml）
package com.wellness.platfront.entity.weixin;/** * 统一下单微信返回的参数组（xml） * @author * @date 2017年08月11日 */public class UnifiedorderResult { private String appid;//appid private String mch_id;//商家id private String device_info;//设备号 private String nonce_str;//随机字符串 private String sign;//签名 private String result_code;//错误码 private String err_code;//错误代码 private String err_code_des;//错误返回的信息描述 private String trade_type;//调用接口提交的交易类型，取值如下：JSAPI，NATIVE，APP private String prepay_id;//微信生成的预支付回话标识，用于后续接口调用中使用，该值有效期为2小时 private String code_url;//trade_type为NATIVE是有返回，可将该参数值生成二维码展示出来进行扫码支付 private String return_code;//返回状态码SUCCESS/FAIL此字段是通信标识，非交易标识，交易是否成功需要查看result_code来判断 private String return_msg;//返回信息 public String getAppid() { return appid; } public String getMch_id() { return mch_id; } public String getDevice_info() { return device_info; } public String getNonce_str() { return nonce_str; } public String getSign() { return sign; } public String getResult_code() { return result_code; } public String getErr_code() { return err_code; } public String getErr_code_des() { return err_code_des; } public String getTrade_type() { return trade_type; } public String getPrepay_id() { return prepay_id; } public String getCode_url() { return code_url; } public void setAppid(String appid) { this.appid = appid; } public void setMch_id(String mch_id) { this.mch_id = mch_id; } public void setDevice_info(String device_info) { this.device_info = device_info; } public void setNonce_str(String nonce_str) { this.nonce_str = nonce_str; } public void setSign(String sign) { this.sign = sign; } public void setResult_code(String result_code) { this.result_code = result_code; } public void setErr_code(String err_code) { this.err_code = err_code; } public void setErr_code_des(String err_code_des) { this.err_code_des = err_code_des; } public void setTrade_type(String trade_type) { this.trade_type = trade_type; } public void setPrepay_id(String prepay_id) { this.prepay_id = prepay_id; } public void setCode_url(String code_url) { this.code_url = code_url; } public String getReturn_code() { return return_code; } public String getReturn_msg() { return return_msg; } public void setReturn_code(String return_code) { this.return_code = return_code; } public void setReturn_msg(String return_msg) { this.return_msg = return_msg; }}以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持武林网。
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