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微信支付退款结果通知（回调） AES-256-ECB解密 代码_微信v3 异步通知 解密

作者：小小林熬夜学编程 | 2024-02-23 00:19:33

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微信v3 异步通知 解密

微信支付中的退款后，微信那边需要回调。恶心的是需要我们解密。

给大家我的代码看看。

每个类都有一个主方法供大家测试用。

Base64Util
  1. package com.xz.app.util;
  2.  
  3. import java.util.Base64;
  4.  
  5. /**
  6.  *
  8.  
  9. import java.util.Base64;
  10.  
  11. /**
  12.  * @author jing.huang
  13.  * @function jdk8支持
  14.  * @date 2018年1月10日
  15.  * @version
  16.  */
  17. public class Base64Util {
  18.  
  19.  
  20.     public static byte[] decode(String encodedText){
  21.         final Base64.Decoder decoder = Base64.getDecoder();
  22.         return decoder.decode(encodedText);
  23.     }
  24.  
  25.     public static String encode(byte[] data){
  26.         final Base64.Encoder encoder = Base64.getEncoder();
  27.         return encoder.encodeToString(data);
  28.     }
  29.  
  30.     /**
  31.      * @param args
  32.      */
  33.     public static void main(String[] args) {
  34.         try {
  35.             final Base64.Decoder decoder = Base64.getDecoder();
  36.             final Base64.Encoder encoder = Base64.getEncoder();
  37.             final String text = "字串文字";
  38.             final byte[] textByte = text.getBytes("UTF-8");
  39.             //编码
  40.             final String encodedText = encoder.encodeToString(textByte);
  41.             System.out.println(encodedText);
  42.             //解码
  43.             System.out.println(new String(decoder.decode(encodedText), "UTF-8"));
  44.         } catch (Exception e) {
  45.             e.printStackTrace();
  46.         }
  47.  
  48. //        final Base64.Decoder decoder = Base64.getDecoder();
  49. //        final Base64.Encoder encoder = Base64.getEncoder();
  50. //        final String text = "字串文字";
  51. //        final byte[] textByte = text.getBytes("UTF-8");
  52. //        //编码
  53. //        final String encodedText = encoder.encodeToString(textByte);
  54. //        System.out.println(encodedText);
  55. //        //解码
  56. //        System.out.println(new String(decoder.decode(encodedText), "UTF-8"));
  57.  
  58.     }
  59.  
  60. }

 

MD5
  1. package com.xz.app.util;
  2.  
  3.  
  4.  
  5. import java.security.MessageDigest;
  6.  
  7.  
  8.  
  9. public class MD5 {
  10.     private final static String[] hexDigits = {"0", "1", "2", "3", "4", "5", "6", "7",
  11.             "8", "9", "a", "b", "c", "d", "e", "f"};
  12.  
  13.     /**
  14.      * 转换字节数组为16进制字串
  15.      * @param b 字节数组
  16.      * @return 16进制字串
  17.      */
  18.     public static String byteArrayToHexString(byte[] b) {
  19.         StringBuilder resultSb = new StringBuilder();
  20.         for (byte aB : b) {
  21.             resultSb.append(byteToHexString(aB));
  22.         }
  23.         return resultSb.toString();
  24.     }
  25.  
  26.     /**
  27.      * 转换byte到16进制
  28.      * @param b 要转换的byte
  29.      * @return 16进制格式
  30.      */
  31.     private static String byteToHexString(byte b) {
  32.         int n = b;
  33.         if (n < 0) {
  34.             n = 256 + n;
  35.         }
  36.         int d1 = n / 16;
  37.         int d2 = n % 16;
  38.         return hexDigits[d1] + hexDigits[d2];
  39.     }
  40.  
  41.     /**
  42.      * MD5编码
  43.      * @param origin 原始字符串
  44.      * @return 经过MD5加密之后的结果
  45.      */
  46.     public static String MD5Encode(String origin) {
  47.         String resultString = null;
  48.         try {
  49.             resultString = origin;
  50.             MessageDigest md = MessageDigest.getInstance("MD5");
  51.             resultString = byteArrayToHexString(md.digest(resultString.getBytes()));
  52.         } catch (Exception e) {
  53.             e.printStackTrace();
  54.         }
  55.         return resultString;
  56.     }
  57.  
  58.     public static void main(String[] args) {
  59.         System.out.println("111"+MD5Encode("111"));
  60.     }
  61.  
  62. }

 

AESUtil
  1. /**
  2.  * 
  3.  */
  4. package encode;
  5.  
  6. import javax.crypto.Cipher;
  7. import javax.crypto.spec.SecretKeySpec;
  8.  
  9. /**
  10.  * @author jing.huang
  11.  * @function
  12.  * @date 2018年1月10日
  13.  * @version 
  14.  */
  15. public class AESUtil {
  16.     /** 
  17.      * 密钥算法 
  18.      */  
  19.     private static final String ALGORITHM = "AES";  
  20.     /** 
  21.      * 加解密算法/工作模式/填充方式 
  22.      */  
  23.     private static final String ALGORITHM_MODE_PADDING = "AES/ECB/PKCS5Padding";  
  24.     /** 
  25.      * 生成key 
  26.      */  
  27.     private static SecretKeySpec key = new SecretKeySpec(MD5.MD5Encode("2IBtBXdrqC3kCBs4gaceL7nl2nnFadQv").toLowerCase().getBytes(), ALGORITHM);  
  28.   
  29.     /** 
  30.      * AES加密 
  31.      *  
  32.      * @param data 
  33.      * @return 
  34.      * @throws Exception 
  35.      */  
  36.     public static String encryptData(String data) throws Exception {  
  37.         // 创建密码器  
  38.         Cipher cipher = Cipher.getInstance(ALGORITHM_MODE_PADDING);  
  39.         // 初始化  
  40.         cipher.init(Cipher.ENCRYPT_MODE, key);  
  41.         return Base64Util.encode(cipher.doFinal(data.getBytes()));  
  42.     }  
  43.   
  44.     /** 
  45.      * AES解密 
  46.      *  
  47.      * @param base64Data 
  48.      * @return 
  49.      * @throws Exception 
  50.      */  
  51.     public static String decryptData(String base64Data) throws Exception {  
  52.         Cipher cipher = Cipher.getInstance(ALGORITHM_MODE_PADDING);  
  53.         cipher.init(Cipher.DECRYPT_MODE, key);  
  54.         return new String(cipher.doFinal(Base64Util.decode(base64Data)));  
  55.     }  
  56.   
  57.     public static void main(String[] args) throws Exception {  
  58.         //解密
  59. //        String req_info="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";
  60.         String req_info = "m4NnwrtY0jhpDgNp65H1V/0OWMtSoTYhhY89MHbflhmnaHq9ZKjx9ABq6Jpg4SccA876HVy7J9P85NpdvCMNGInZ4fANDRE+YfZe4HeF+bbFj6JETcEFPpE9YW+bTbC0D+gl/otScJfvB2QUK7+EeBGPHN1EWX9zbr2Gw6AUaORdFk3mGxV5dtjuwWQrv5juzkXDs33Z2dUMslO+i3j0cTDHqwS4hptx2j6h2HvzgzltFbjo7nysU+4rArqJvrGW/9r18e1St9XgG21NALqixfaSmqetOR4zLVL4/+z3CEz8cg5r+/4GUOTf3XFmLCZ/wEkRQhKRNVibG0NFfiG3KnqArMJ/dheQHCd7qL+XX/ZV6tj8RLMgL7R6hOiR03Ljyikdxq9M3K9CTYgf03pHJd3geXX1LgXrLxc1flL6NW+zD3ZayGYpr1WpLsSMG7z8W5j1pme6cRj3n2+CwSFnOnOkxaFuLKoJAJIqM3gbC0eN++vY73RKphlI4zZqg6o5s3MXI6ju1yoi/ZQ+XbTg2JttsdbU0aySernKwkt0rYMf0j/Mcvo2axgHbI3w/iTm141WxHUjkQ+ga2X1pOWdGifGhSmMP8oGaA/WD5MAsK1qXX0eFvUWS/PTauCSTWq5Cmr8loA/KL3jgvB0nyR4mfccB+tPy4Ny7kzOlr/VNeb0ULf96R0AWFWCtdt8AmujAP0DYiM5FSmYLI0XRhpSDjnEbBM8+isNE1GlAVR3NzzemwQORihScovpAktbRSN/d3N+NgTjSoVDiJvCOxCs3thX9qt9iwYbA+/X/gv8lza2FZyIzwkQxGRcYl8JWKpXzNW8EWUNVnSLdHvQttDeV3CvgP/x579RGd6whyFYS6AaI0qw7oTjCFh2EHS/VzGvFuv166ZlVIJ4MNvg79O9h63ZOSE1LzVqEsVh8fDCfM2GgJ9aUdl95Djgunit4yIZOdoigR3f/BEHKrYCEham11rYohaAXs4XAXWihsV3WD5j4G/P+txvjAwujvf4HDwzHgFsmSml013U2mUiy+v4zw==";
  61.         String B = AESUtil.decryptData(req_info);  
  62.         System.out.println(B);  
  63.                
  64.         //加密
  65.         String str = "<root>"+
  66.                 "<out_refund_no><![CDATA[2531340110812300]]></out_refund_no>"+
  67.                 "<out_trade_no><![CDATA[2531340110812100]]></out_trade_no>"+
  68.                 "<refund_account><![CDATA[REFUND_SOURCE_RECHARGE_FUNDS]]></refund_account>"+
  69.                 "<refund_fee><![CDATA[1]]></refund_fee>"+
  70.                 "<refund_id><![CDATA[50000505542018011003064518841]]></refund_id>"+
  71.                 "<refund_recv_accout><![CDATA[支付用户零钱]]></refund_recv_accout>"+
  72.                 "<refund_request_source><![CDATA[API]]></refund_request_source>"+
  73.                 "<refund_status><![CDATA[SUCCESS]]></refund_status>"+
  74.                 "<settlement_refund_fee><![CDATA[1]]></settlement_refund_fee>"+
  75.                 "<settlement_total_fee><![CDATA[1]]></settlement_total_fee>"+
  76.                 "<success_time><![CDATA[2018-01-10 10:31:24]]></success_time>"+
  77.                 "<total_fee><![CDATA[1]]></total_fee>"+
  78.                 "<transaction_id><![CDATA[4200000052201801101409025381]]></transaction_id>"+
  79.                 "</root>";
  80.         System.out.println(encryptData(str));
  81.     }  
  82.     
  83. }

注意：key要改为自己的key

 

 

  1. /**
  2. 	 * 
  3. 	 * 微信退款回调
  4. 	 * @param
  5. 	 * @param
  6. 	 */
  7. 	@ApiOperation(value = "微信退款回调", notes = "微信退款回调")
  8. 	@RequestMapping(value = "WXtrackRefunderrorrm2", method = RequestMethod.POST)
  9. 	@ResponseBody
  10. 	public void WXtrackRefunderrorrm2(HttpServletRequest httpRequest, HttpServletResponse httpResponse) throws  Exception{
  11. 		logger.info("开始回调");
  12. 		InputStream inStream = httpRequest.getInputStream();
  13. 		ByteArrayOutputStream outSteam = new ByteArrayOutputStream();
  14. 		byte[] buffer = new byte[1024];
  15. 		int len = 0;
  16. 		while ((len = inStream.read(buffer)) != -1) {
  17. 			outSteam.write(buffer, 0, len);
  18. 		}
  19. 		String resultxml = new String(outSteam.toByteArray(), "utf-8");
  20. 		Map<String, String> params = WXPayUtil.xmlToMap(resultxml);
  21. 		outSteam.close();
  22. 		inStream.close();
  23. 		logger.info("here");
  24. 		if (params.get("return_code").equals("SUCCESS")) {
  25. 			logger.info("退款成功0");
  26. 			logger.info("退款成功1");
  27. 			
  28. 				String req_info = params.get("req_info");
  29. 				logger.info(req_info);
  30. 			//	String resultStr = AESUtil.decryptData(req_error);
  31. 				// WXPayUtil.getLogger().error("refund:解密后的字符串:" + resultStr);
  32. 			//	Map<String, String> aesMap = WXPayUtil.xmlToMap(resultStr);
  33. 				String afterDecrypt=AESUtil.decryptData(req_info);
  34. 				logger.info(afterDecrypt);
  35. 				Map<String, String> aesMap = WXPayUtil.xmlToMap(afterDecrypt);
  36. 				logger.info("退款成功1");
  37. 				/** 以下为返回的加密字段： **/
  38. 				//  商户退款单号  是   String(64)  1.21775E+27 商户退款单号
  39. 				String out_refund_no = aesMap.get("out_refund_no");
  40. 				//  退款状态    是   String(16)  SUCCESS SUCCESS-退款成功、CHANGE-退款异常、REFUNDCLOSE—退款关闭
  41. 				String refund_status = aesMap.get("refund_status");
  42. 				//  商户订单号   是   String(32)  1.21775E+27 商户系统内部的订单号
  43. 				String out_trade_no = aesMap.get("out_trade_no");
  44. 				logger.info(refund_status);
  45. 				logger.info(out_trade_no);
  46. 				logger.info(out_refund_no);
  47. 			if (!WXPayConstants.SUCCESS.equals(refund_status)) {
  48. 				//这里写业务代码
  49. 				logger.info("退款成功");
  50. 				logger.info(params);
  51. 			}
  52. 		}
  53.  
  54. 	}

从微信那边获得req_info后对其解密，在获得你的订单号等，来进行业务操作。

 

如果不行的话。请按下面的方法操作一下。

JAVA运行环境默认不允许256位密钥的AES加解密，解决方法就是修改策略文件

在官方网站下载JCE无限制权限策略文件

    JDK7版本JCE下载地址： http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html

    JDK8版本JCE下载地址：http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html

    下载后解压，可以看到local_policy.jar和US_export_policy.jar以及readme.txt
    如果安装了JRE，将两个jar文件放到%JRE_HOME%\lib\security目录下覆盖原来的文件
    如果安装了JDK，将两个jar文件放到%JDK_HOME%\jre\lib\security目录下覆盖原来文件

    实践：
    以JDK8为例，系统为WIN10，替换上述security文件夹下\policy\limited文件夹和\policy\unlimited文件夹里面的local_policy.jar和US_export_policy.jar这两个文件。

    若是在服务器上，则只有在security目录下有local_policy.jar和US_export_policy.jar，替换即可

感谢简书的推荐
链接：https://www.jianshu.com/p/6d3259e88b80
 

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