diff --git a/src/main/java/com/hotlcc/wechat4j/Wechat.java b/src/main/java/com/hotlcc/wechat4j/Wechat.java
index 84f8df4..d167f55 100644
--- a/src/main/java/com/hotlcc/wechat4j/Wechat.java
+++ b/src/main/java/com/hotlcc/wechat4j/Wechat.java
@@ -7,6 +7,7 @@ import com.hotlcc.wechat4j.handler.ExitEventHandler;
 import com.hotlcc.wechat4j.handler.ReceivedMsgHandler;
 import com.hotlcc.wechat4j.model.*;
 import com.hotlcc.wechat4j.util.*;
+import lombok.extern.slf4j.Slf4j;
 import org.apache.http.HttpException;
 import org.apache.http.HttpRequest;
 import org.apache.http.HttpRequestInterceptor;
@@ -17,8 +18,6 @@ import org.apache.http.entity.ContentType;
 import org.apache.http.impl.client.BasicCookieStore;
 import org.apache.http.impl.client.HttpClients;
 import org.apache.http.protocol.HttpContext;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.File;
 import java.io.IOException;
@@ -35,9 +34,8 @@ import java.util.concurrent.locks.ReentrantLock;
  * @author Allen
  */
 @SuppressWarnings({"Duplicates", "unused"})
+@Slf4j
 public class Wechat {
-    private static Logger logger = LoggerFactory.getLogger(Wechat.class);
-
     private CookieStore cookieStore;
     private HttpClient httpClient;
 
@@ -657,7 +655,7 @@ public class Wechat {
 
                 try {
                     JSONObject result = WebWeixinApiUtil.syncCheck(httpClient, urlVersion, new BaseRequest(wxsid, skey, wxuin), getSyncKeyList(false));
-                    logger.info("微信同步监听心跳返回数据：{}", result);
+                    log.info("微信同步监听心跳返回数据：{}", result);
                     if (result == null) {
                         throw new RuntimeException("微信API调用异常");
                     } else {
@@ -667,7 +665,7 @@ public class Wechat {
                     //人为退出
                     int retcode = result.getIntValue("retcode");
                     if (retcode != RetcodeEnum.RECODE_0.getCode()) {
-                        logger.info("微信退出或从其它设备登录");
+                        log.info("微信退出或从其它设备登录");
                         logout();
                         processExitEvent(ExitTypeEnum.REMOTE_EXIT, null);
                         return;
@@ -676,16 +674,16 @@ public class Wechat {
                     int selector = result.getIntValue("selector");
                     processSelector(selector);
                 } catch (Exception e) {
-                    logger.error("同步监听心跳异常", e);
+                    log.error("同步监听心跳异常", e);
 
                     if (i == 0) {
-                        logger.info("同步监听请求失败，正在重试...");
+                        log.info("同步监听请求失败，正在重试...");
                     } else if (i > 0) {
-                        logger.info("第{}次重试失败" + i);
+                        log.info("第{}次重试失败" + i);
                     }
 
                     if (i >= time) {
-                        logger.info("重复{}次仍然失败，退出微信", i);
+                        log.info("重复{}次仍然失败，退出微信", i);
                         logout();
                         processExitEvent(ExitTypeEnum.ERROR_EXIT, e);
                         return;
@@ -722,7 +720,7 @@ public class Wechat {
                     }
                 }
             } catch (Exception e) {
-                logger.error("Exit event process error.", e);
+                log.error("Exit event process error.", e);
             }
         }
 
@@ -742,13 +740,13 @@ public class Wechat {
                         break;
                 }
             } catch (Exception e) {
-                logger.error("Exit event process error.", e);
+                log.error("Exit event process error.", e);
             }
 
             try {
                 handler.handleAllType(wechat, type, t);
             } catch (Exception e) {
-                logger.error("Exit event process error.", e);
+                log.error("Exit event process error.", e);
             }
         }
 
@@ -761,7 +759,7 @@ public class Wechat {
             try {
                 SelectorEnum e = SelectorEnum.valueOf(selector);
                 if (e == null) {
-                    logger.warn("Cannot process unknow selector {}", selector);
+                    log.warn("Cannot process unknow selector {}", selector);
                     return;
                 }
 
@@ -781,7 +779,7 @@ public class Wechat {
                         break;
                 }
             } catch (Exception e) {
-                logger.error("Execute processSelector error.", e);
+                log.error("Execute processSelector error.", e);
             }
         }
 
@@ -792,19 +790,19 @@ public class Wechat {
             try {
                 JSONObject result = WebWeixinApiUtil.webWxSync(httpClient, urlVersion, passTicket, new BaseRequest(wxsid, skey, wxuin), syncKey);
                 if (result == null) {
-                    logger.error("从服务端同步新数据异常");
+                    log.error("从服务端同步新数据异常");
                     return;
                 }
 
                 JSONObject baseResponse = result.getJSONObject("BaseResponse");
                 if (baseResponse == null) {
-                    logger.warn("同步接口返回数据格式错误");
+                    log.warn("同步接口返回数据格式错误");
                     return;
                 }
 
                 int ret = baseResponse.getIntValue("Ret");
                 if (ret != RetcodeEnum.RECODE_0.getCode()) {
-                    logger.warn("同步接口返回错误代码:{}", ret);
+                    log.warn("同步接口返回错误代码:{}", ret);
                     return;
                 }
 
@@ -820,7 +818,7 @@ public class Wechat {
                     syncKeyLock.unlock();
                 }
             } catch (Exception e) {
-                logger.error("Execute webWxSync error.", e);
+                log.error("Execute webWxSync error.", e);
             }
         }
 
@@ -836,10 +834,10 @@ public class Wechat {
                 }
 
                 int len = addMsgList.size();
-                logger.debug("收到{}条新消息", len);
+                log.debug("收到{}条新消息", len);
 
                 if (receivedMsgHandlers == null || receivedMsgHandlers.isEmpty()) {
-                    logger.warn("收到{}条新消息，但没有配置消息处理器", len);
+                    log.warn("收到{}条新消息，但没有配置消息处理器", len);
                     return;
                 }
 
@@ -852,7 +850,7 @@ public class Wechat {
                     }
                 }
             } catch (Exception e) {
-                logger.error("Execute processNewMsg error.", e);
+                log.error("Execute processNewMsg error.", e);
             }
         }
 
@@ -860,7 +858,7 @@ public class Wechat {
             try {
                 handler.handleAllType(wechat, msg);
             } catch (Exception e) {
-                logger.error("Execute processNewMsg error.", e);
+                log.error("Execute processNewMsg error.", e);
             }
         }
     }
diff --git a/src/main/java/com/hotlcc/wechat4j/util/CommonUtil.java b/src/main/java/com/hotlcc/wechat4j/util/CommonUtil.java
index 734f015..d58c961 100644
--- a/src/main/java/com/hotlcc/wechat4j/util/CommonUtil.java
+++ b/src/main/java/com/hotlcc/wechat4j/util/CommonUtil.java
@@ -1,16 +1,14 @@
 package com.hotlcc.wechat4j.util;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import lombok.extern.slf4j.Slf4j;
 
 /**
  * 通用工具类
  *
  * @author Allen
  */
+@Slf4j
 public final class CommonUtil {
-    private static Logger logger = LoggerFactory.getLogger(CommonUtil.class);
-
     private CommonUtil() {
     }
 
diff --git a/src/main/java/com/hotlcc/wechat4j/util/FileUtil.java b/src/main/java/com/hotlcc/wechat4j/util/FileUtil.java
index f323e23..eb1c194 100644
--- a/src/main/java/com/hotlcc/wechat4j/util/FileUtil.java
+++ b/src/main/java/com/hotlcc/wechat4j/util/FileUtil.java
@@ -1,8 +1,7 @@
 package com.hotlcc.wechat4j.util;
 
+import lombok.extern.slf4j.Slf4j;
 import org.apache.http.entity.ContentType;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import javax.activation.MimetypesFileTypeMap;
 import java.io.ByteArrayOutputStream;
@@ -15,9 +14,8 @@ import java.io.IOException;
  *
  * @author Allen
  */
+@Slf4j
 public final class FileUtil {
-    private static Logger logger = LoggerFactory.getLogger(FileUtil.class);
-
     private FileUtil() {
     }
 
diff --git a/src/main/java/com/hotlcc/wechat4j/util/PropertiesUtil.java b/src/main/java/com/hotlcc/wechat4j/util/PropertiesUtil.java
index 104b723..f36d28b 100644
--- a/src/main/java/com/hotlcc/wechat4j/util/PropertiesUtil.java
+++ b/src/main/java/com/hotlcc/wechat4j/util/PropertiesUtil.java
@@ -1,7 +1,6 @@
 package com.hotlcc.wechat4j.util;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import lombok.extern.slf4j.Slf4j;
 
 import java.io.IOException;
 import java.io.InputStream;
@@ -12,9 +11,8 @@ import java.util.Properties;
  *
  * @author Allen
  */
+@Slf4j
 public final class PropertiesUtil {
-    private static Logger logger = LoggerFactory.getLogger(PropertiesUtil.class);
-
     private PropertiesUtil() {
     }
 
@@ -38,7 +36,7 @@ public final class PropertiesUtil {
                 is = PropertiesUtil.class.getClassLoader().getResourceAsStream(path);
                 prop.load(is);
             } catch (Exception e) {
-                logger.error("Loading properties file \"" + path + "\" error.", e);
+                log.error("Loading properties file \"" + path + "\" error.", e);
             } finally {
                 if (is != null) {
                     try {
diff --git a/src/main/java/com/hotlcc/wechat4j/util/QRCodeUtil.java b/src/main/java/com/hotlcc/wechat4j/util/QRCodeUtil.java
index 26cc1b6..df64c8c 100644
--- a/src/main/java/com/hotlcc/wechat4j/util/QRCodeUtil.java
+++ b/src/main/java/com/hotlcc/wechat4j/util/QRCodeUtil.java
@@ -7,8 +7,7 @@ import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
 import com.google.zxing.common.BitMatrix;
 import com.google.zxing.common.HybridBinarizer;
 import com.hotlcc.wechat4j.enums.OperatingSystemEnum;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import lombok.extern.slf4j.Slf4j;
 
 import javax.imageio.ImageIO;
 import java.awt.image.BufferedImage;
@@ -23,9 +22,8 @@ import java.io.IOException;
  * @author Allen
  */
 @SuppressWarnings({"unused", "WeakerAccess"})
+@Slf4j
 public final class QRCodeUtil {
-    private static Logger logger = LoggerFactory.getLogger(QRCodeUtil.class);
-
     private QRCodeUtil() {
     }
 
@@ -252,7 +250,7 @@ public final class QRCodeUtil {
             fos.flush();
             return tmp;
         } catch (IOException e) {
-            logger.error("二维码写入临时文件异常", e);
+            log.error("二维码写入临时文件异常", e);
             throw new RuntimeException(e);
         } finally {
             if (fos != null) {
diff --git a/src/main/java/com/hotlcc/wechat4j/util/WebWeixinApiUtil.java b/src/main/java/com/hotlcc/wechat4j/util/WebWeixinApiUtil.java
index b3dc0ad..1ec8ae6 100644
--- a/src/main/java/com/hotlcc/wechat4j/util/WebWeixinApiUtil.java
+++ b/src/main/java/com/hotlcc/wechat4j/util/WebWeixinApiUtil.java
@@ -6,6 +6,7 @@ import com.hotlcc.wechat4j.enums.LoginTipEnum;
 import com.hotlcc.wechat4j.model.BaseRequest;
 import com.hotlcc.wechat4j.model.MediaMessage;
 import com.hotlcc.wechat4j.model.WxMessage;
+import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.codec.digest.DigestUtils;
 import org.apache.http.*;
 import org.apache.http.client.HttpClient;
@@ -20,8 +21,6 @@ import org.apache.http.entity.mime.MultipartEntityBuilder;
 import org.apache.http.message.BasicNameValuePair;
 import org.apache.http.util.EntityUtils;
 import org.json.XML;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.stringtemplate.v4.ST;
 
 import java.math.BigDecimal;
@@ -37,12 +36,11 @@ import java.util.regex.Pattern;
  * @author Allen
  */
 @SuppressWarnings({"Duplicates", "unused"})
+@Slf4j
 public final class WebWeixinApiUtil {
     private WebWeixinApiUtil() {
     }
 
-    private static Logger logger = LoggerFactory.getLogger(WebWeixinApiUtil.class);
-
     /**
      * 预编译正则匹配
      */
@@ -108,7 +106,7 @@ public final class WebWeixinApiUtil {
 
             return result;
         } catch (Exception e) {
-            logger.error("获取uuid异常", e);
+            log.error("获取uuid异常", e);
             return null;
         }
     }
@@ -144,7 +142,7 @@ public final class WebWeixinApiUtil {
 
             return data;
         } catch (Exception e) {
-            logger.error("获取二维码异常", e);
+            log.error("获取二维码异常", e);
             return null;
         }
     }
@@ -216,7 +214,7 @@ public final class WebWeixinApiUtil {
 
             return result;
         } catch (Exception e) {
-            logger.error("获取跳转uri异常", e);
+            log.error("获取跳转uri异常", e);
             return null;
         }
     }
@@ -250,7 +248,7 @@ public final class WebWeixinApiUtil {
 
             return JSONObject.parseObject(XML.toJSONObject(res).toString()).getJSONObject("error");
         } catch (Exception e) {
-            logger.error("获取登录认证码异常", e);
+            log.error("获取登录认证码异常", e);
             return null;
         }
     }
@@ -287,7 +285,7 @@ public final class WebWeixinApiUtil {
                 httpClient.execute(httpPost);
             }
         } catch (Exception e) {
-            logger.error("退出登录异常", e);
+            log.error("退出登录异常", e);
         }
     }
 
@@ -322,7 +320,7 @@ public final class WebWeixinApiUtil {
 
             return JSONObject.parseObject(res);
         } catch (Exception e) {
-            logger.error("push登录异常", e);
+            log.error("push登录异常", e);
             return null;
         }
     }
@@ -366,7 +364,7 @@ public final class WebWeixinApiUtil {
 
             return JSONObject.parseObject(res);
         } catch (Exception e) {
-            logger.error("获取初始化数据异常", e);
+            log.error("获取初始化数据异常", e);
             return null;
         }
     }
@@ -415,7 +413,7 @@ public final class WebWeixinApiUtil {
 
             return JSONObject.parseObject(res);
         } catch (Exception e) {
-            logger.error("开启消息状态通知异常", e);
+            log.error("开启消息状态通知异常", e);
             return null;
         }
     }
@@ -474,7 +472,7 @@ public final class WebWeixinApiUtil {
 
             return result;
         } catch (Exception e) {
-            logger.error("服务端状态同步异常", e);
+            log.error("服务端状态同步异常", e);
             return null;
         }
     }
@@ -513,7 +511,7 @@ public final class WebWeixinApiUtil {
 
             return JSONObject.parseObject(res);
         } catch (Exception e) {
-            logger.error("获取全部联系人列表异常", e);
+            log.error("获取全部联系人列表异常", e);
             return null;
         }
     }
@@ -561,7 +559,7 @@ public final class WebWeixinApiUtil {
 
             return JSONObject.parseObject(res);
         } catch (Exception e) {
-            logger.error("批量获取指定联系人信息异常", e);
+            log.error("批量获取指定联系人信息异常", e);
             return null;
         }
     }
@@ -609,7 +607,7 @@ public final class WebWeixinApiUtil {
 
             return JSONObject.parseObject(res);
         } catch (Exception e) {
-            logger.error("从服务端同步新数据异常", e);
+            log.error("从服务端同步新数据异常", e);
             return null;
         }
     }
@@ -656,7 +654,7 @@ public final class WebWeixinApiUtil {
 
             return JSONObject.parseObject(res);
         } catch (Exception e) {
-            logger.error("发送消息异常", e);
+            log.error("发送消息异常", e);
             return null;
         }
     }
@@ -693,7 +691,6 @@ public final class WebWeixinApiUtil {
 
             long millis = System.currentTimeMillis();
             int mediaLength = mediaData.length;
-            // String mimeType = contentType.getMimeType();
 
             HttpPost httpPost = new HttpPost(url);
             httpPost.setHeader("Content-type", ContentType.MULTIPART_FORM_DATA.toString());
@@ -722,14 +719,8 @@ public final class WebWeixinApiUtil {
 
                 HttpEntity paramEntity = MultipartEntityBuilder.create()
                         .setMode(HttpMultipartMode.BROWSER_COMPATIBLE)
-                        // .addTextBody("id", StringUtil.getUuid(), ContentType.TEXT_PLAIN)
-                        // .addTextBody("name", mediaName, ContentType.TEXT_PLAIN)
-                        // .addTextBody("type", mimeType, ContentType.TEXT_PLAIN)
-                        // .addTextBody("lastModifieDate", String.valueOf(millis), ContentType.TEXT_PLAIN)
-                        // .addTextBody("size", String.valueOf(mediaLength), ContentType.TEXT_PLAIN)
                         .addTextBody("chunks", String.valueOf(chunks))
                         .addTextBody("chunk", String.valueOf(chunk))
-                        // .addTextBody("mediatype", WechatUtil.getMediatype(mimeType), ContentType.TEXT_PLAIN)
                         .addTextBody("uploadmediarequest", uploadmediarequest.toJSONString(), ContentType.TEXT_PLAIN)
                         .addTextBody("webwx_data_ticket", dataTicket, ContentType.TEXT_PLAIN)
                         .addTextBody("pass_ticket", passticket, ContentType.TEXT_PLAIN)
@@ -763,7 +754,7 @@ public final class WebWeixinApiUtil {
 
             return result;
         } catch (Exception e) {
-            logger.error("上传媒体文件异常", e);
+            log.error("上传媒体文件异常", e);
             return null;
         }
     }
@@ -810,7 +801,7 @@ public final class WebWeixinApiUtil {
 
             return JSONObject.parseObject(res);
         } catch (Exception e) {
-            logger.error("发送图片消息异常", e);
+            log.error("发送图片消息异常", e);
             return null;
         }
     }