一:微信支付证书配置 二:证书读取以及读取后的使用 package com.zhx.guides.assistant.config.wechatpay; import org.apache.commons.io.IOUtils;import org.apache.http.HttpEntity;import org.apache.http.client.methods.Closea
一:微信支付证书配置
二:证书读取以及读取后的使用
package com.zhx.guides.assistant.config.wechatpay; import org.apache.commons.io.IOUtils; import org.apache.http.HttpEntity; import org.apache.http.client.methods.CloseableHttpResponse; import org.apache.http.client.methods.HttpPost; 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.HttpClients; import org.apache.http.ssl.SSLContexts; import org.apache.http.util.EntityUtils; import org.springframework.core.io.ClassPathResource; import javax.net.ssl.SSLContext; import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStream; import java.security.KeyStore; /** * @Class WeChatConfigUtil * @Version 1.0 * @Date 创建时间:2020-06-15 16:19 * @Copyright Copyright by * @Direction 类说明 */ public class WeChatConfigUtil { private static byte[] certData; /**** * @throws Exception */ static { try { //从微信商户平台下载的安全证书存放的目录 //String certPath = "D:\\config\\apiclient_cert.p12"; //File file = new File(certPath); //InputStream certStream = new FileInputStream(file); //使用springboot配置文件内读取的方式 ClassPathResource classPathResource = new ClassPathResource("\\user_key\\apiclient_cert.p12"); InputStream certStream = classPathResource.getInputStream(); WeChatConfigUtil.certData = IOUtils.toByteArray(certStream); certStream.read(WeChatConfigUtil.certData); certStream.close(); } catch (IOException e) { e.printStackTrace(); } } /** * 开始退款操作 * * @param mchId 商户ID * @param url 请求URL * @param data 退款参数 * @return * @throws Exception */ public static String doRefund(String mchId, String url, String data) throws Exception { /** * 注意PKCS12证书 是从微信商户平台-》账户设置-》 API安全 中下载的 */ KeyStore keyStore = KeyStore.getInstance("PKCS12"); //这里自行实现我是使用数据库配置将证书上传到了服务器可以使用 FileInputStream读取本地文件 //ByteArrayInputStream inputStream = FileUtil.getInputStream("https://############################.p12"); ByteArrayInputStream inputStream = new ByteArrayInputStream(WeChatConfigUtil.certData); try { //这里写密码..默认是你的MCHID keyStore.load(inputStream, mchId.toCharArray()); } finally { inputStream.close(); } SSLContext sslcontext = SSLContexts.custom() //这里也是写密码的 .loadKeyMaterial(keyStore, mchId.toCharArray()) .build(); SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory( sslcontext, SSLConnectionSocketFactory.getDefaultHostnameVerifier()); CloseableHttpClient httpclient = HttpClients.custom() .setSSLSocketFactory(sslsf) .build(); try { HttpPost httpost = new HttpPost(url); httpost.setEntity(new StringEntity(data, "UTF-8")); CloseableHttpResponse response = httpclient.execute(httpost); try { HttpEntity entity = response.getEntity(); //接受到返回信息 String jsonStr = EntityUtils.toString(response.getEntity(), "UTF-8"); EntityUtils.consume(entity); return jsonStr; } finally { response.close(); } } finally { httpclient.close(); } } }
三:发起订单退款操作
/** * 封装查询请求数据 * @param tradeRefund 退款订单请求信息 * @param path 数据访问PATH * @return */ private static SortedMap<String, Object> refundData( TradeRefund tradeRefund , String path ) throws Exception { //构建参数 Map<String, String> dataMap = new HashMap<>(); dataMap.put("appid","wx#################"); dataMap.put("mch_id","137#############"); //自行实现该随机串 dataMap.put("nonce_str",Core.MD5("12344")); dataMap.put("out_trade_no","P190808170038402889c5318502"); dataMap.put("out_refund_no","P190808170038402889c5318502"); dataMap.put("total_fee","1"); dataMap.put("refund_fee","1"); dataMap.put("refund_desc","退款"); //生成签名 String sign = PayToolUtil.createSign("UTF-8", dataMap , WeichatPayConfigure.API_KEY ); //WXPayUtil.generateSignature(dataMap, "rv4###################"); dataMap.put("sign", sign); //map数据转xml String requestXML = getRequestXml( dataMap ); logger.info( "订单退款请求参数:\n" + requestXML ); //发起退款 String responseXml = WeChatConfigUtil.doRefund( WeichatPayConfigure.MCH_ID , "https://api.mch.weixin.qq.com/secapi/pay/refund", requestXML ); } /** * @author * @date 2016-4-22 * @Description:将请求参数转换为xml格式的string * @param parameters * 请求参数 * @return */ public static String getRequestXml(SortedMap<Object, Object> parameters) { StringBuffer sb = new StringBuffer(); sb.append("<xml>"); Set es = parameters.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 ("attach".equalsIgnoreCase(k) || "body".equalsIgnoreCase(k) || "sign".equalsIgnoreCase(k)) { sb.append("<" + k + ">" + "<![CDATA[" + v + "]]></" + k + ">"); } else { sb.append("<" + k + ">" + v + "</" + k + ">"); } } sb.append("</xml>"); return sb.toString(); }
/** * @author * @date 2016-4-22 * @Description:sign签名 * @param characterEncoding * 编码格式 * @param packageParams * 请求参数 * @return */ public static String createSign(String characterEncoding, SortedMap<Object, Object> packageParams, String API_KEY) { StringBuffer sb = new StringBuffer(); Set es = packageParams.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 (null != v && !"".equals(v) && !"sign".equals(k) && !"key".equals(k)) { sb.append(k + "=" + v + "&"); } } sb.append("key=" + API_KEY); String sign = MD5Util.MD5Encode(sb.toString(), characterEncoding).toUpperCase(); return sign; }
package com.zhx.guides.assistant.interfaces.pay.wechatpay.util; import java.security.MessageDigest; public class MD5Util { private static String byteArrayToHexString(byte b[]) { StringBuffer resultSb = new StringBuffer(); for (int i = 0; i < b.length; i++) resultSb.append(byteToHexString(b[i])); return resultSb.toString(); } private static String byteToHexString(byte b) { int n = b; if (n < 0) n += 256; int d1 = n / 16; int d2 = n % 16; return hexDigits[d1] + hexDigits[d2]; } public static String MD5Encode(String origin, String charsetname) { String resultString = null; try { resultString = new String(origin); MessageDigest md = MessageDigest.getInstance("MD5"); if (charsetname == null || "".equals(charsetname)) resultString = byteArrayToHexString(md.digest(resultString .getBytes())); else resultString = byteArrayToHexString(md.digest(resultString .getBytes(charsetname))); } catch (Exception exception) { } return resultString; } /*** * 简化版本 * @param s * @return */ public final static String MD5(String s) { char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; try { byte[] btInput = s.getBytes("utf-8"); // 获得MD5摘要算法的 MessageDigest 对象 MessageDigest mdInst = MessageDigest.getInstance("MD5"); // 使用指定的字节更新摘要 mdInst.update(btInput); // 获得密文 byte[] md = mdInst.digest(); // 把密文转换成十六进制的字符串形式 int j = md.length; char str[] = new char[j * 2]; int k = 0; for (int i = 0; i < j; i++) { byte byte0 = md[i]; str[k++] = hexDigits[byte0 >>> 4 & 0xf]; str[k++] = hexDigits[byte0 & 0xf]; } return new String(str); } catch (Exception e) { e.printStackTrace(); return null; } } private static final String hexDigits[] = { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" }; }
/** * @author * @date 2016-4-22 * @Description:将请求参数转换为xml格式的string * @param parameters * 请求参数 * @return */ public static String getRequestXml(SortedMap<Object, Object> parameters) { StringBuffer sb = new StringBuffer(); sb.append("<xml>"); Set es = parameters.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 ("attach".equalsIgnoreCase(k) || "body".equalsIgnoreCase(k) || "sign".equalsIgnoreCase(k)) { sb.append("<" + k + ">" + "<![CDATA[" + v + "]]></" + k + ">"); } else { sb.append("<" + k + ">" + v + "</" + k + ">"); } } sb.append("</xml>"); return sb.toString(); }
四:请求XML示例
<xml> <appid>wx2421b1c4370ec43b</appid> <mch_id>10000100</mch_id> <nonce_str>6cefdb308e1e2e8aabd48cf79e546a02</nonce_str> <out_refund_no>1415701182</out_refund_no> <out_trade_no>1415757673</out_trade_no> <refund_fee>1</refund_fee> <total_fee>1</total_fee> <transaction_id></transaction_id> <sign>FE56DD4AA85C0EECA82C35595A69E153</sign> </xml>
五:官方信息
官方地址:https://pay.weixin.qq.com/wiki/doc/api/wxa/wxa_api.php?chapter=9_4
需注意这两个参数我使用的是out_trade_no
总结
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