diff --git a/pay-java-ali/src/main/java/com/egzosn/pay/ali/api/AliPayService.java b/pay-java-ali/src/main/java/com/egzosn/pay/ali/api/AliPayService.java
index 9af574d..a0e76c4 100644
--- a/pay-java-ali/src/main/java/com/egzosn/pay/ali/api/AliPayService.java
+++ b/pay-java-ali/src/main/java/com/egzosn/pay/ali/api/AliPayService.java
@@ -12,11 +12,9 @@ import com.egzosn.pay.common.exception.PayErrorException;
 import com.egzosn.pay.common.http.HttpConfigStorage;
 import com.egzosn.pay.common.http.UriVariables;
 import com.egzosn.pay.common.util.DateUtils;
-import com.egzosn.pay.common.util.MatrixToImageWriter;
 import com.egzosn.pay.common.util.Util;
 import com.egzosn.pay.common.util.sign.SignUtils;
 import com.egzosn.pay.common.util.str.StringUtils;
-import java.awt.image.BufferedImage;
 import java.math.BigDecimal;
 import java.util.*;
 
@@ -28,7 +26,7 @@ import java.util.*;
  *         email egzosn@gmail.com
  *         date 2017-2-22 20:09
  */
-public class AliPayService extends BasePayService<AliPayConfigStorage> {
+public class AliPayService extends BasePayService<AliPayConfigStorage, PayOrder> {
     
     /**
      * 正式测试环境
diff --git a/pay-java-ali/src/main/java/com/egzosn/pay/ali/bean/OrderSettle.java b/pay-java-ali/src/main/java/com/egzosn/pay/ali/bean/OrderSettle.java
index 0f52df3..f4227b9 100644
--- a/pay-java-ali/src/main/java/com/egzosn/pay/ali/bean/OrderSettle.java
+++ b/pay-java-ali/src/main/java/com/egzosn/pay/ali/bean/OrderSettle.java
@@ -4,11 +4,11 @@ import com.egzosn.pay.common.util.Util;
 import com.egzosn.pay.common.util.str.StringUtils;
 
 import java.math.BigDecimal;
-import java.util.HashMap;
 import java.util.Map;
 import java.util.TreeMap;
 
 /**
+ * 交易结算信息
  * @author egan
  *         email egzosn@gmail.com
  *         date 2019/4/28.20:29
diff --git a/pay-java-ali/src/main/java/com/egzosn/pay/ali/before/api/AliPayService.java b/pay-java-ali/src/main/java/com/egzosn/pay/ali/before/api/AliPayService.java
index ae9c93b..5ad9318 100644
--- a/pay-java-ali/src/main/java/com/egzosn/pay/ali/before/api/AliPayService.java
+++ b/pay-java-ali/src/main/java/com/egzosn/pay/ali/before/api/AliPayService.java
@@ -35,7 +35,7 @@ import static com.egzosn.pay.ali.api.AliPayService.SIGN;
  * @see com.egzosn.pay.ali.api.AliPayService
  */
 @Deprecated
-public class AliPayService extends BasePayService<AliPayConfigStorage> {
+public class AliPayService extends BasePayService<AliPayConfigStorage, PayOrder> {
 
 
 
diff --git a/pay-java-common/src/main/java/com/egzosn/pay/common/api/BasePayService.java b/pay-java-common/src/main/java/com/egzosn/pay/common/api/BasePayService.java
index 53d5c90..ef39af7 100644
--- a/pay-java-common/src/main/java/com/egzosn/pay/common/api/BasePayService.java
+++ b/pay-java-common/src/main/java/com/egzosn/pay/common/api/BasePayService.java
@@ -26,7 +26,7 @@ import java.util.*;
  *      date 2017/3/5 20:36
  *   </pre>
  */
-public abstract class BasePayService<PC extends PayConfigStorage> implements PayService<PC> {
+public abstract class BasePayService<PC extends PayConfigStorage, O extends PayOrder> implements PayService<PC, O> {
     protected final Log LOG = LogFactory.getLog(getClass());
     protected PC payConfigStorage;
 
@@ -138,7 +138,7 @@ public abstract class BasePayService<PC extends PayConfigStorage> implements Pay
      * @return 对应页面重定向信息
      */
     @Override
-    public String toPay(PayOrder order) {
+    public String toPay(O order) {
         Map orderInfo = orderInfo(order);
         return buildRequest(orderInfo, MethodType.POST);
     }
@@ -150,7 +150,7 @@ public abstract class BasePayService<PC extends PayConfigStorage> implements Pay
      * @return 返回图片信息，支付时需要的
      */
     @Override
-    public BufferedImage genQrPay(PayOrder order) {
+    public BufferedImage genQrPay(O order) {
        return MatrixToImageWriter.writeInfoToJpgBuff(getQrPay(order));
     }
 
@@ -463,7 +463,7 @@ public abstract class BasePayService<PC extends PayConfigStorage> implements Pay
      * @param orderInfo 订单信息
      * @return 处理后订单信息
      */
-    public Map<String, Object> preOrderHandler(Map<String, Object> orderInfo, PayOrder payOrder){
+    public Map<String, Object> preOrderHandler(Map<String, Object> orderInfo, O payOrder){
         return orderInfo;
     }
 
diff --git a/pay-java-common/src/main/java/com/egzosn/pay/common/api/PayService.java b/pay-java-common/src/main/java/com/egzosn/pay/common/api/PayService.java
index eececb9..7066266 100644
--- a/pay-java-common/src/main/java/com/egzosn/pay/common/api/PayService.java
+++ b/pay-java-common/src/main/java/com/egzosn/pay/common/api/PayService.java
@@ -20,7 +20,7 @@ import java.util.Map;
  *         date 2016-5-18 14:09:01
  *         </pre>
  */
-public interface PayService<PC extends PayConfigStorage> {
+public interface PayService<PC extends PayConfigStorage, O extends PayOrder> {
 
 
     /**
@@ -88,7 +88,7 @@ public interface PayService<PC extends PayConfigStorage> {
      * @return 订单信息
      * @see PayOrder 支付订单信息
      */
-    Map<String, Object> orderInfo(PayOrder order);
+    Map<String, Object> orderInfo(O order);
 
     /**
      * 页面转跳支付， 返回对应页面重定向信息
@@ -96,7 +96,7 @@ public interface PayService<PC extends PayConfigStorage> {
      * @param order 订单信息
      * @return 对应页面重定向信息
      */
-    String toPay(PayOrder order);
+    String toPay(O order);
 
     /**
      * 创建签名
@@ -160,14 +160,14 @@ public interface PayService<PC extends PayConfigStorage> {
      * @param order 发起支付的订单信息
      * @return 返回图片信息，支付时需要的
      */
-    BufferedImage genQrPay(PayOrder order);
+    BufferedImage genQrPay(O order);
     /**
      * 获取输出二维码信息,
      *
      * @param order 发起支付的订单信息
      * @return 返回二维码信息,，支付时需要的
      */
-    String getQrPay(PayOrder order);
+    String getQrPay(O order);
 
     /**
      * 刷卡付,pos主动扫码付款(条码付)
@@ -175,7 +175,7 @@ public interface PayService<PC extends PayConfigStorage> {
      * @param order 发起支付的订单信息
      * @return 返回支付结果
      */
-    Map<String, Object> microPay(PayOrder order);
+    Map<String, Object> microPay(O order);
 
     /**
      * 交易查询接口
@@ -453,4 +453,15 @@ public interface PayService<PC extends PayConfigStorage> {
      * @return 支付消息对象
      */
     PayMessage createMessage(Map<String, Object> message);
+
+    /**
+     * 预订单回调处理器，用于订单信息的扩展
+     * 签名之前使用
+     *  如果需要进行扩展请重写该方法即可
+     * @param orderInfo 商户平台预订单信息
+     * @param payOrder 订单信息
+     * @return 处理后订单信息
+     */
+    Map<String, Object> preOrderHandler(Map<String, Object> orderInfo, O payOrder);
+
 }
diff --git a/pay-java-fuiou/src/main/java/com/egzosn/pay/fuiou/api/FuiouPayService.java b/pay-java-fuiou/src/main/java/com/egzosn/pay/fuiou/api/FuiouPayService.java
index d297c9d..2c67b2c 100644
--- a/pay-java-fuiou/src/main/java/com/egzosn/pay/fuiou/api/FuiouPayService.java
+++ b/pay-java-fuiou/src/main/java/com/egzosn/pay/fuiou/api/FuiouPayService.java
@@ -21,7 +21,7 @@ import java.util.*;
  * create 2017 2017/1/16 0016
  * </pre>
  */
-public class FuiouPayService extends BasePayService<FuiouPayConfigStorage> {
+public class FuiouPayService extends BasePayService<FuiouPayConfigStorage, PayOrder> {
 
     /**
      * 正式域名
@@ -129,14 +129,14 @@ public class FuiouPayService extends BasePayService<FuiouPayConfigStorage> {
     /**
      * 校验回调数据来源是否合法
      *
-     * @param order_id 业务id, 数据的真实性.
+     * @param orderId 业务id, 数据的真实性.
      * @return 返回校验结果
      */
     @Override
-    public boolean verifySource(String order_id) {
+    public boolean verifySource(String orderId) {
         LinkedHashMap<String, Object> params = new LinkedHashMap<>();
         params.put("mchnt_cd", payConfigStorage.getPid());
-        params.put("order_id", order_id);
+        params.put("order_id", orderId);
         params.put("md5", createSign(SignUtils.parameters2MD5Str(params, "|"), payConfigStorage.getInputCharset()));
         JSONObject resultJson = getHttpRequestTemplate().postForObject(getReqUrl() + URL_FuiouSmpAQueryGate + "?" + UriVariables.getMapToParameters(params), null, JSONObject.class);
         if (null == resultJson){
diff --git a/pay-java-payoneer/src/main/java/com/egzosn/pay/payoneer/api/AdvancedPayService.java b/pay-java-payoneer/src/main/java/com/egzosn/pay/payoneer/api/AdvancedPayService.java
index 9ef4017..76c3a0e 100644
--- a/pay-java-payoneer/src/main/java/com/egzosn/pay/payoneer/api/AdvancedPayService.java
+++ b/pay-java-payoneer/src/main/java/com/egzosn/pay/payoneer/api/AdvancedPayService.java
@@ -1,6 +1,7 @@
 package com.egzosn.pay.payoneer.api;
 
 import com.egzosn.pay.common.api.PayService;
+import com.egzosn.pay.common.bean.PayOrder;
 
 import java.util.Map;
 
@@ -15,7 +16,7 @@ import java.util.Map;
  * 
  */
 
-public interface AdvancedPayService extends PayService<PayoneerConfigStorage> {
+public interface AdvancedPayService extends PayService<PayoneerConfigStorage, PayOrder> {
     /**
      * 获取授权页面
      * @param payeeId 用户id
diff --git a/pay-java-payoneer/src/main/java/com/egzosn/pay/payoneer/api/PayoneerPayService.java b/pay-java-payoneer/src/main/java/com/egzosn/pay/payoneer/api/PayoneerPayService.java
index 4d61b73..f0f2de8 100644
--- a/pay-java-payoneer/src/main/java/com/egzosn/pay/payoneer/api/PayoneerPayService.java
+++ b/pay-java-payoneer/src/main/java/com/egzosn/pay/payoneer/api/PayoneerPayService.java
@@ -33,7 +33,7 @@ import java.util.*;
  *         create 2018-01-19
  *                 </pre>
  */
-public class PayoneerPayService extends BasePayService<PayoneerConfigStorage> implements AdvancedPayService {
+public class PayoneerPayService extends BasePayService<PayoneerConfigStorage, PayOrder> implements AdvancedPayService {
     /**
      * 测试地址
      */
diff --git a/pay-java-paypal/src/main/java/com/egzosn/pay/paypal/api/PayPalPayService.java b/pay-java-paypal/src/main/java/com/egzosn/pay/paypal/api/PayPalPayService.java
index b94f887..6519c9d 100644
--- a/pay-java-paypal/src/main/java/com/egzosn/pay/paypal/api/PayPalPayService.java
+++ b/pay-java-paypal/src/main/java/com/egzosn/pay/paypal/api/PayPalPayService.java
@@ -29,7 +29,7 @@ import java.util.concurrent.locks.Lock;
  * email egzosn@gmail.com
  * date 2018-4-8 ‏‎22:15:09
  */
-public class PayPalPayService extends BasePayService<PayPalConfigStorage>{
+public class PayPalPayService extends BasePayService<PayPalConfigStorage, PayOrder>{
 
     /**
      * 沙箱环境
diff --git a/pay-java-union/src/main/java/com/egzosn/pay/union/api/UnionPayService.java b/pay-java-union/src/main/java/com/egzosn/pay/union/api/UnionPayService.java
index 90aaad6..0637aa1 100644
--- a/pay-java-union/src/main/java/com/egzosn/pay/union/api/UnionPayService.java
+++ b/pay-java-union/src/main/java/com/egzosn/pay/union/api/UnionPayService.java
@@ -38,7 +38,7 @@ import java.util.*;
  *         create 2017 2017/11/5
  *         </pre>
  */
-public class UnionPayService extends BasePayService<UnionPayConfigStorage> {
+public class UnionPayService extends BasePayService<UnionPayConfigStorage, PayOrder> {
     /**
      * 测试域名
      */
diff --git a/pay-java-wx-youdian/src/main/java/com/egzosn/pay/wx/youdian/api/WxYouDianPayService.java b/pay-java-wx-youdian/src/main/java/com/egzosn/pay/wx/youdian/api/WxYouDianPayService.java
index 2d7775f..7134cfb 100644
--- a/pay-java-wx-youdian/src/main/java/com/egzosn/pay/wx/youdian/api/WxYouDianPayService.java
+++ b/pay-java-wx-youdian/src/main/java/com/egzosn/pay/wx/youdian/api/WxYouDianPayService.java
@@ -27,7 +27,7 @@ import java.util.concurrent.locks.Lock;
  * email egzosn@gmail.com
  * date 2017/01/12 22:58
  */
-public class WxYouDianPayService extends BasePayService<WxYouDianPayConfigStorage> {
+public class WxYouDianPayService extends BasePayService<WxYouDianPayConfigStorage, PayOrder> {
 
     private final static String URL = "http://life.51youdian.com/Api/CheckoutCounter/";
 
diff --git a/pay-java-wx/src/main/java/com/egzosn/pay/wx/api/WxPayService.java b/pay-java-wx/src/main/java/com/egzosn/pay/wx/api/WxPayService.java
index 5027d82..9368a2f 100644
--- a/pay-java-wx/src/main/java/com/egzosn/pay/wx/api/WxPayService.java
+++ b/pay-java-wx/src/main/java/com/egzosn/pay/wx/api/WxPayService.java
@@ -36,7 +36,7 @@ import static com.egzosn.pay.wx.bean.WxTransferType.*;
  *                 date 2016-5-18 14:09:01
  *                 </pre>
  */
-public class WxPayService extends BasePayService<WxPayConfigStorage> {
+public class WxPayService extends BasePayService<WxPayConfigStorage, PayOrder> {
 
 
     /**
diff --git a/pay-java-yiji/src/main/java/com/egzosn/pay/yiji/api/YiJiPayService.java b/pay-java-yiji/src/main/java/com/egzosn/pay/yiji/api/YiJiPayService.java
index cece47f..911c9a2 100644
--- a/pay-java-yiji/src/main/java/com/egzosn/pay/yiji/api/YiJiPayService.java
+++ b/pay-java-yiji/src/main/java/com/egzosn/pay/yiji/api/YiJiPayService.java
@@ -27,7 +27,7 @@ import java.util.TreeMap;
  *         email egzosn@gmail.com
  *          * date 2019/04/15 22:51
  */
-public class YiJiPayService extends BasePayService<YiJiPayConfigStorage> {
+public class YiJiPayService extends BasePayService<YiJiPayConfigStorage, PayOrder> {
 
     /**
      * 正式测试环境
diff --git a/wx.jpg b/wx.jpg
deleted file mode 100644
index 4332207..0000000
Binary files a/wx.jpg and /dev/null differ