加下日志

@@ -134,5 +134,11 @@
             <artifactId>alipay-sdk-java</artifactId>
             <version>3.4.27.ALL</version>
         </dependency>
+
+        <dependency>
+            <groupId>xom</groupId>
+            <artifactId>xom</artifactId>
+            <version>1.2.5</version>
+        </dependency>
     </dependencies>
 </project>
\ No newline at end of file

@@ -4,29 +4,25 @@
  */
 package com.alipay.servlet.gateway;
 
-import java.io.IOException;
-import java.io.PrintWriter;
-import java.util.Map;
-
-import javax.servlet.ServletException;
-import javax.servlet.http.HttpServlet;
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-
 import com.alipay.api.AlipayApiException;
-import com.alipay.api.AlipayClient;
 import com.alipay.api.AlipayConstants;
-import com.alipay.api.DefaultAlipayClient;
-import com.alipay.api.domain.AlipayTradeAppPayModel;
 import com.alipay.api.internal.util.AlipaySignature;
 import com.alipay.api.internal.util.StringUtils;
-import com.alipay.api.request.AlipayTradeAppPayRequest;
 import com.alipay.constants.AlipayServiceEnvConstants;
 import com.alipay.dispatcher.Dispatcher;
 import com.alipay.executor.ActionExecutor;
-import com.alipay.factory.AlipayAPIClientFactory;
 import com.alipay.util.LogUtil;
 import com.alipay.util.RequestUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.Map;
 
 /**
  * 开发者网关，支付宝所有主动和开发者的交互会经过此网关进入开发者系统(配置在开放平台的应用网关)
@@ -36,6 +32,9 @@ import com.alipay.util.RequestUtil;
  */
 public class GatewayServlet extends HttpServlet {
 
+    private final static Logger logger = LoggerFactory.getLogger(GatewayServlet.class);
+
+
     /**
      * 
      */
@@ -47,7 +46,9 @@ public class GatewayServlet extends HttpServlet {
     @Override
     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException,
                                                                               IOException {
+        logger.info("enter ali GatewayServlet  req {} ",req);
         this.doPost(req, resp);
+        logger.info("enter ali GatewayServlet end ");
     }
 
     /**
@@ -59,6 +60,7 @@ public class GatewayServlet extends HttpServlet {
     protected void doPost(HttpServletRequest request, HttpServletResponse response)
                                                                                    throws ServletException,
                                                                                    IOException {
+        logger.info("enter ali GatewayServlet post ");
         //支付宝响应消息  
         String responseMsg = "";
 
@@ -82,11 +84,13 @@ public class GatewayServlet extends HttpServlet {
         catch (AlipayApiException alipayApiException) {
             //开发者可以根据异常自行进行处理
             alipayApiException.printStackTrace();
+            logger.error("enter ali GatewayServlet post  error {} ",alipayApiException);
 
         } 
         catch (Exception exception) {
             //开发者可以根据异常自行进行处理
             exception.printStackTrace();
+            logger.error("enter ali GatewayServlet post exception {}  ",exception);
 
         } finally {
             //5. 响应结果加签及返回
@@ -110,6 +114,7 @@ public class GatewayServlet extends HttpServlet {
             } catch (AlipayApiException alipayApiException) {
                 //开发者可以根据异常自行进行处理
                 alipayApiException.printStackTrace();
+                logger.error("enter ali GatewayServlet post exception {}  ",alipayApiException);
             }
         }
     }
@@ -117,7 +122,7 @@ public class GatewayServlet extends HttpServlet {
     /**
      * 验签
      * 
-     * @param request‘
+     * @param
      * @return
      */
     private void verifySign(Map<String, String> params) throws AlipayApiException {

@@ -5,6 +5,10 @@
 package com.alipay.util;
 
 
+import com.alipay.servlet.gateway.GatewayServlet;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 /**
  * 日志打印工具
  * 
@@ -13,13 +17,16 @@ package com.alipay.util;
  */
 public class LogUtil {
 
+    private final static Logger logger = LoggerFactory.getLogger(GatewayServlet.class);
+
+
     /**
      * 信息日志打印
      * 
      * @param prefixName 前缀名称
-     * @param params  参数
      */
     public static void log(String prefixName, String msgContent) {
         System.out.println(prefixName + " : " + msgContent);
+        logger.info("LogUtil "+prefixName + " : " + msgContent);
     }
 }