微信服務號開發----公眾號支付退款
阿新 • • 發佈：2018-12-31
1、微信支付開發文件
下載地址
微信商戶平臺-》賬戶設定-》 API安全 中下載的
下載之後存放在本地一個英文命名的資料夾下，解壓。
3、證書解壓之後是
4、程式碼
package com.kp.wxpay; import java.util.SortedMap; import java.util.TreeMap; /** * @author: py * @version:2017年1月10日 上午11:17:59 * @Desc 微信退款 申請以及退款 * //api地址：http://mch.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_4 */ public class WXPayRefundUtil { String appid = ""; //微信公眾號apid String appsecret = " "; //微信公眾號appsecret public static String mch_id = " "; //微信商戶id String op_user_id = " ";//操作員帳號, 預設為商戶號 String partnerkey = " ";//商戶平臺上的那個KEY /** * @date 2017年1月10日上午10:36:50 void * @Des:退款 */ public void wechatRefund() { // 商戶系統內部的退款單號，商戶系統內部唯一，同一退款單號多次請求只退一筆 String out_refund_no = " "; String out_trade_no = "256165";// 商戶側傳給微信的訂單號 String total_fee = "1";// 總金額 String refund_fee = "1";// 退款金額 String nonce_str = "20bdx4b25826b";// 隨機字串 SortedMap<String, String> packageParams = new TreeMap<String, String>(); packageParams.put("appid", appid); packageParams.put("mch_id", mch_id); packageParams.put("nonce_str", nonce_str); packageParams.put("out_trade_no", out_trade_no); packageParams.put("out_refund_no", out_refund_no); packageParams.put("total_fee", total_fee); packageParams.put("refund_fee", refund_fee); packageParams.put("op_user_id", op_user_id); RequestHandler reqHandler = new RequestHandler( null, null); reqHandler.init(appid, appsecret, partnerkey); String sign = reqHandler.createSign(packageParams); String xml = "<xml>" + "<appid>" + appid + "</appid>" + "<mch_id>"+ mch_id + "</mch_id>" + "<nonce_str>" + nonce_str+ "</nonce_str>" + "<sign><![CDATA[" + sign + "]]></sign>"+ "<out_trade_no>" + out_trade_no + "</out_trade_no>"+ "<out_refund_no>" + out_refund_no + "</out_refund_no>"+ "<total_fee>" + total_fee + "</total_fee>"+ "<refund_fee>" + refund_fee + "</refund_fee>"+ "<op_user_id>" + op_user_id + "</op_user_id>" + "</xml>"; /*<xml> <appid>wx2421b1c4370ec43b</appid> <mch_id>10000100</mch_id> <nonce_str>6cefdb308e1e2e8aabd48cf79e546a02</nonce_str> <op_user_id>10000100</op_user_id> <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>*/ String createOrderURL = "https://api.mch.weixin.qq.com/secapi/pay/refund"; try { String s= ClientCustomSSL.doRefund(createOrderURL, xml); System.out.println("s:"+s); //改變支付資料庫中的是否退款 //新增退款資料庫資料 } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } /** * @date 2017年1月10日上午10:37:47 void * @Des:退款查詢 */ public void querywechatRefund() { // 商戶系統內部的退款單號，商戶系統內部唯一，同一退款單號多次請求只退一筆 String transaction_id = "656565"; String nonce_str = "5616556165";// 隨機字串 SortedMap<String, String> packageParams = new TreeMap<String, String>(); packageParams.put("appid", appid); packageParams.put("mch_id", mch_id); packageParams.put("nonce_str", nonce_str); packageParams.put("transaction_id", transaction_id); RequestHandler reqHandler = new RequestHandler( null, null); reqHandler.init(appid, appsecret, partnerkey); String sign = reqHandler.createSign(packageParams); String xml = "<xml>" + "<appid>" + appid + "</appid>" + "<mch_id>"+ mch_id + "</mch_id>" + "<nonce_str>" + nonce_str+ "</nonce_str>" + "<sign><![CDATA[" + sign + "]]></sign>"+ "<transaction_id>" + transaction_id + "</transaction_id>"+ "</xml>"; /*<xml> <appid>wx2421b1c4370ec43b</appid> <mch_id>10000100</mch_id> <nonce_str>0b9f35f484df17a732e537c37708d1d0</nonce_str> <out_refund_no></out_refund_no> <out_trade_no>1415757673</out_trade_no> <refund_id></refund_id> <transaction_id></transaction_id> <sign>66FFB727015F450D167EF38CCC549521</sign> </xml>*/ String createOrderURL = "https://api.mch.weixin.qq.com/pay/refundquery"; try { String s= ClientCustomSSL.doRefund(createOrderURL, xml); System.out.println("s:"+s); } catch (Exception e) { e.printStackTrace(); } } public static void main(String[] args) { WXPayRefundUtil refund=new WXPayRefundUtil(); // refund.wechatRefund();//申請退款 refund.querywechatRefund();//查詢退款 } }
5、這個類中需要填寫雙向證書解壓的路徑
package com.kp.wxpay; import java.io.File; import java.io.FileInputStream; import java.security.KeyStore; import javax.net.ssl.SSLContext; 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.conn.ssl.SSLContexts; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.util.EntityUtils; public class ClientCustomSSL { public static String doRefund(String url,String data) throws Exception { /** * 注意PKCS12證書 是從微信商戶平臺-》賬戶設定-》 API安全 中下載的 */ KeyStore keyStore = KeyStore.getInstance("PKCS12"); FileInputStream instream = new FileInputStream(new File("E:/bmjcompany/wxpaycert/cert/apiclient_cert.p12"));//P12檔案目錄 try { /** * 此處要改 * */ keyStore.load(instream, WXPayRefundUtil.mch_id.toCharArray());//這裡寫密碼..預設是你的MCHID } finally { instream.close(); } // Trust own CA and all self-signed certs /** * 此處要改 * */ SSLContext sslcontext = SSLContexts.custom() .loadKeyMaterial(keyStore, WXPayRefundUtil.mch_id.toCharArray())//這裡也是寫密碼的 .build(); // Allow TLSv1 protocol only SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory( sslcontext, new String[] { "TLSv1" }, null, SSLConnectionSocketFactory.BROWSER_COMPATIBLE_HOSTNAME_VERIFIER); CloseableHttpClient httpclient = HttpClients.custom() .setSSLSocketFactory(sslsf) .build(); try { HttpPost httpost = new HttpPost(url); // 設定響應頭資訊 httpost.addHeader("Connection", "keep-alive"); httpost.addHeader("Accept", "*/*"); httpost.addHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8"); httpost.addHeader("Host", "api.mch.weixin.qq.com"); httpost.addHeader("X-Requested-With", "XMLHttpRequest"); httpost.addHeader("Cache-Control", "max-age=0"); httpost.addHeader("User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0) "); httpost.setEntity(new StringEntity(data, "UTF-8")); CloseableHttpResponse response = httpclient.execute(httpost); try { HttpEntity entity = response.getEntity(); String jsonStr = EntityUtils.toString(response.getEntity(), "UTF-8"); EntityUtils.consume(entity); return jsonStr; } finally { response.close(); } } finally { httpclient.close(); } } }
其他程式碼可下載檢視
6、原始碼地址