#830 修复微信支付退款通知解析代码在某些环境下可能会出现的乱码问题

Author: binarywang

weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/notify/WxPayRefundNotifyResult.java

@@ -50,15 +50,16 @@ public static WxPayRefundNotifyResult fromXML(String xmlString, String mchKey) t
     if (WxPayConstants.ResultCode.FAIL.equals(result.getReturnCode())) {
       return result;
     }
-    
+
     String reqInfoString = result.getReqInfoString();
     try {
       final String keyMd5String = DigestUtils.md5Hex(mchKey).toLowerCase();
       SecretKeySpec key = new SecretKeySpec(keyMd5String.getBytes(StandardCharsets.UTF_8), "AES");
 
       Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
       cipher.init(Cipher.DECRYPT_MODE, key);
-      result.setReqInfo(ReqInfo.fromXML(new String(cipher.doFinal(Base64.decodeBase64(reqInfoString)))));
+      result.setReqInfo(ReqInfo.fromXML(new String(cipher.doFinal(Base64.decodeBase64(reqInfoString)),
+        StandardCharsets.UTF_8)));
     } catch (Exception e) {
       throw new WxPayException("解密退款通知加密信息时出错", e);
     }