diff --git a/src/main/java/com/hotlcc/wechat4j/enums/ExitType.java b/src/main/java/com/hotlcc/wechat4j/enums/ExitType.java
index c65b6d4..9f7f91f 100644
--- a/src/main/java/com/hotlcc/wechat4j/enums/ExitType.java
+++ b/src/main/java/com/hotlcc/wechat4j/enums/ExitType.java
@@ -9,9 +9,10 @@ import lombok.AllArgsConstructor;
  */
 @AllArgsConstructor
 public enum ExitType {
-    ERROR_EXIT("错误退出"),
-    LOCAL_EXIT("本地退出"),
-    REMOTE_EXIT("远程退出");
-
-    private String desc;
+    /** 错误退出 */
+    ERROR_EXIT,
+    /** 本地退出 */
+    LOCAL_EXIT,
+    /** 远程退出 */
+    REMOTE_EXIT
 }
diff --git a/src/main/java/com/hotlcc/wechat4j/enums/LoginTip.java b/src/main/java/com/hotlcc/wechat4j/enums/LoginTip.java
index 24a821d..42b0f30 100644
--- a/src/main/java/com/hotlcc/wechat4j/enums/LoginTip.java
+++ b/src/main/java/com/hotlcc/wechat4j/enums/LoginTip.java
@@ -8,18 +8,13 @@ import lombok.Getter;
  *
  * @author Allen
  */
-@SuppressWarnings("unused")
 @Getter
 @AllArgsConstructor
 public enum LoginTip {
-    TIP_0(0, "扫码登录"),
-    TIP_1(1, "确认登录");
+    /** 扫码登录 */
+    TIP_0(0),
+    /** 确认登录 */
+    TIP_1(1);
 
     private int code;
-    private String desc;
-
-    @Override
-    public String toString() {
-        return code + "";
-    }
 }
diff --git a/src/main/java/com/hotlcc/wechat4j/enums/MediaType.java b/src/main/java/com/hotlcc/wechat4j/enums/MediaType.java
index 272bdc6..bfc31a9 100644
--- a/src/main/java/com/hotlcc/wechat4j/enums/MediaType.java
+++ b/src/main/java/com/hotlcc/wechat4j/enums/MediaType.java
@@ -11,11 +11,13 @@ import lombok.Getter;
 @Getter
 @AllArgsConstructor
 public enum MediaType {
+    /** pic */
     PICTURE(4, "pic"),
+    /** video */
     VIDEO(4, "video");
 
-    public static String REQUEST_KEY = "mediatype";
-    public static String REQUEST_JSON_KEY = "MediaType";
+    public static final String REQUEST_KEY = "mediatype";
+    public static final String REQUEST_JSON_KEY = "MediaType";
 
     private Integer code;
     private String value;
diff --git a/src/main/java/com/hotlcc/wechat4j/enums/MsgType.java b/src/main/java/com/hotlcc/wechat4j/enums/MsgType.java
index 9e43499..f4d4c10 100644
--- a/src/main/java/com/hotlcc/wechat4j/enums/MsgType.java
+++ b/src/main/java/com/hotlcc/wechat4j/enums/MsgType.java
@@ -12,25 +12,42 @@ import lombok.Getter;
 @AllArgsConstructor
 @Getter
 public enum MsgType {
-    TEXT_MSG(1, "文本消息"),
-    IMAGE_MSG(3, "图片消息"),
-    VOICE_MSG(34, "语音消息"),
-    VERIFY_MSG(37, "验证消息"),
-    POSSIBLE_FRIEND_MSG(40, "可能的朋友的消息"),
-    SHARE_CARD_MSG(42, "共享名片"),
-    VIDEO_CALL_MSG(43, "视频通话消息"),
-    ANIMATED_STICKER_MSG(47, "动画表情"),
-    LOCATION_MSG(48, "位置消息"),
-    SHARE_LINK_MSG(49, "分享链接"),
-    VOIP_MSG(50, "VoIP消息"),
-    INIT_MSG(51, "初始化消息"),
-    VOIP_NOTIFY_MSG(52, "VoIP通知"),
-    VOIP_INVITE_MSG(53, "VoIP邀请"),
-    VIDEO_MSG(62, "小视频"),
-    SYS_NOTICE_MSG(9999, "系统通知"),
-    SYSTEM_MSG(10000, "系统消息"),
-    WITHDRAW_MSG(10002, "撤回消息");
+    /** 文本消息 */
+    TEXT_MSG(1),
+    /** 图片消息 */
+    IMAGE_MSG(3),
+    /** 语音消息 */
+    VOICE_MSG(34),
+    /** 验证消息 */
+    VERIFY_MSG(37),
+    /** 可能的朋友的消息 */
+    POSSIBLE_FRIEND_MSG(40),
+    /** 共享名片 */
+    SHARE_CARD_MSG(42),
+    /** 视频通话消息 */
+    VIDEO_CALL_MSG(43),
+    /** 动画表情 */
+    ANIMATED_STICKER_MSG(47),
+    /** 位置消息 */
+    LOCATION_MSG(48),
+    /** 分享链接 */
+    SHARE_LINK_MSG(49),
+    /** VoIP消息 */
+    VOIP_MSG(50),
+    /** 初始化消息 */
+    INIT_MSG(51),
+    /** VoIP通知 */
+    VOIP_NOTIFY_MSG(52),
+    /** VoIP邀请 */
+    VOIP_INVITE_MSG(53),
+    /** 小视频 */
+    VIDEO_MSG(62),
+    /** 系统通知 */
+    SYS_NOTICE_MSG(9999),
+    /** 系统消息 */
+    SYSTEM_MSG(10000),
+    /** 撤回消息 */
+    WITHDRAW_MSG(10002);
 
     private int code;
-    private String desc;
 }
diff --git a/src/main/java/com/hotlcc/wechat4j/enums/OperatingSystem.java b/src/main/java/com/hotlcc/wechat4j/enums/OperatingSystem.java
index d820d92..7bc86ee 100644
--- a/src/main/java/com/hotlcc/wechat4j/enums/OperatingSystem.java
+++ b/src/main/java/com/hotlcc/wechat4j/enums/OperatingSystem.java
@@ -11,10 +11,15 @@ import lombok.Getter;
 @Getter
 @AllArgsConstructor
 public enum OperatingSystem {
+    /** darwin */
     DARWIN("darwin"),
+    /** windows */
     WINDOWS("windows"),
+    /** linux */
     LINUX("linux"),
+    /** mac os */
     MAC_OS("mac"),
+    /** other */
     OTHER("other");
 
     private String value;
diff --git a/src/main/java/com/hotlcc/wechat4j/enums/Retcode.java b/src/main/java/com/hotlcc/wechat4j/enums/Retcode.java
index 51566b4..76ff1ae 100644
--- a/src/main/java/com/hotlcc/wechat4j/enums/Retcode.java
+++ b/src/main/java/com/hotlcc/wechat4j/enums/Retcode.java
@@ -11,12 +11,14 @@ import lombok.Getter;
 @AllArgsConstructor
 @Getter
 public enum Retcode {
-    RECODE_0(0, "正常"),
-    RECODE_1100(1100, "失败/登出微信"),
-    RECODE_1101(1101, "从其它设备登录微信");
+    /** 正常 */
+    RECODE_0(0),
+    /** 失败/登出微信 */
+    RECODE_1100(1100),
+    /** 从其它设备登录微信 */
+    RECODE_1101(1101);
 
     private int code;
-    private String desc;
 
     public static Retcode valueOf(int code) {
         Retcode[] es = values();
diff --git a/src/main/java/com/hotlcc/wechat4j/enums/Selector.java b/src/main/java/com/hotlcc/wechat4j/enums/Selector.java
index f8336ae..7d85212 100644
--- a/src/main/java/com/hotlcc/wechat4j/enums/Selector.java
+++ b/src/main/java/com/hotlcc/wechat4j/enums/Selector.java
@@ -9,14 +9,18 @@ import lombok.AllArgsConstructor;
  */
 @AllArgsConstructor
 public enum Selector {
-    SELECTOR_0(0, "正常"),
-    SELECTOR_2(2, "有新消息"),
-    SELECTOR_4(4, "目前发现修改了联系人备注会出现"),
-    SELECTOR_6(6, "目前不知道代表什么"),
-    SELECTOR_7(7, "手机操作了微信");
+    /** 正常 */
+    SELECTOR_0(0),
+    /** 有新消息 */
+    SELECTOR_2(2),
+    /** 目前发现修改了联系人备注会出现 */
+    SELECTOR_4(4),
+    /** 目前不知道代表什么 */
+    SELECTOR_6(6),
+    /** 手机操作了微信 */
+    SELECTOR_7(7);
 
     private int code;
-    private String desc;
 
     public static Selector valueOf(int code) {
         Selector[] es = values();
diff --git a/src/main/java/com/hotlcc/wechat4j/model/AppInfo.java b/src/main/java/com/hotlcc/wechat4j/model/AppInfo.java
index 36fa86f..ed633c1 100644
--- a/src/main/java/com/hotlcc/wechat4j/model/AppInfo.java
+++ b/src/main/java/com/hotlcc/wechat4j/model/AppInfo.java
@@ -5,6 +5,7 @@ import com.alibaba.fastjson.JSONArray;
 import com.alibaba.fastjson.JSONObject;
 import com.alibaba.fastjson.annotation.JSONField;
 import lombok.Getter;
+import lombok.NoArgsConstructor;
 import lombok.Setter;
 
 import java.io.Serializable;
@@ -18,11 +19,9 @@ import java.util.List;
  */
 @Getter
 @Setter
+@NoArgsConstructor
 public final class AppInfo implements Serializable {
-    private static final long serialVersionUID = 1L;
-
-    private AppInfo() {
-    }
+    private static final long serialVersionUID = 6409793898938883312L;
 
     @JSONField(name = "Type")
     private Integer type;
diff --git a/src/main/java/com/hotlcc/wechat4j/model/BaseRequest.java b/src/main/java/com/hotlcc/wechat4j/model/BaseRequest.java
index 576ffb9..7109645 100644
--- a/src/main/java/com/hotlcc/wechat4j/model/BaseRequest.java
+++ b/src/main/java/com/hotlcc/wechat4j/model/BaseRequest.java
@@ -2,7 +2,9 @@ package com.hotlcc.wechat4j.model;
 
 import com.alibaba.fastjson.annotation.JSONField;
 import com.hotlcc.wechat4j.util.WechatUtil;
+import lombok.AllArgsConstructor;
 import lombok.Getter;
+import lombok.NoArgsConstructor;
 import lombok.Setter;
 
 import java.io.Serializable;
@@ -14,18 +16,10 @@ import java.io.Serializable;
  */
 @Getter
 @Setter
+@AllArgsConstructor
+@NoArgsConstructor
 public class BaseRequest implements Serializable {
-    private static final long serialVersionUID = 1L;
-
-    public BaseRequest() {
-    }
-
-    public BaseRequest(String deviceID, String sid, String skey, String uin) {
-        this.deviceID = deviceID;
-        this.sid = sid;
-        this.skey = skey;
-        this.uin = uin;
-    }
+    private static final long serialVersionUID = 9141083671818346541L;
 
     public BaseRequest(String Sid, String Skey, String Uin) {
         this(WechatUtil.createDeviceID(), Sid, Skey, Uin);
diff --git a/src/main/java/com/hotlcc/wechat4j/model/ReceivedMsg.java b/src/main/java/com/hotlcc/wechat4j/model/ReceivedMsg.java
index 8bc188c..7712a65 100644
--- a/src/main/java/com/hotlcc/wechat4j/model/ReceivedMsg.java
+++ b/src/main/java/com/hotlcc/wechat4j/model/ReceivedMsg.java
@@ -5,6 +5,7 @@ import com.alibaba.fastjson.JSONArray;
 import com.alibaba.fastjson.JSONObject;
 import com.alibaba.fastjson.annotation.JSONField;
 import lombok.Getter;
+import lombok.NoArgsConstructor;
 import lombok.Setter;
 
 import java.io.Serializable;
@@ -13,12 +14,10 @@ import java.util.List;
 
 @Getter
 @Setter
+@NoArgsConstructor
 public final class ReceivedMsg implements Serializable {
     private static final long serialVersionUID = 1L;
 
-    private ReceivedMsg() {
-    }
-
     @JSONField(name = "SubMsgType")
     private Integer subMsgType;
     @JSONField(name = "VoiceLength")
diff --git a/src/main/java/com/hotlcc/wechat4j/model/RecommendInfo.java b/src/main/java/com/hotlcc/wechat4j/model/RecommendInfo.java
index 73e700a..451a926 100644
--- a/src/main/java/com/hotlcc/wechat4j/model/RecommendInfo.java
+++ b/src/main/java/com/hotlcc/wechat4j/model/RecommendInfo.java
@@ -5,6 +5,7 @@ import com.alibaba.fastjson.JSONArray;
 import com.alibaba.fastjson.JSONObject;
 import com.alibaba.fastjson.annotation.JSONField;
 import lombok.Getter;
+import lombok.NoArgsConstructor;
 import lombok.Setter;
 
 import java.io.Serializable;
@@ -18,12 +19,10 @@ import java.util.List;
  */
 @Getter
 @Setter
+@NoArgsConstructor
 public final class RecommendInfo implements Serializable {
     private static final long serialVersionUID = 1L;
 
-    private RecommendInfo() {
-    }
-
     @JSONField(name = "Ticket")
     private String ticket;
     @JSONField(name = "UserName")
diff --git a/src/main/java/com/hotlcc/wechat4j/model/UserInfo.java b/src/main/java/com/hotlcc/wechat4j/model/UserInfo.java
index b81d5d3..03e33d2 100644
--- a/src/main/java/com/hotlcc/wechat4j/model/UserInfo.java
+++ b/src/main/java/com/hotlcc/wechat4j/model/UserInfo.java
@@ -5,6 +5,7 @@ import com.alibaba.fastjson.JSONArray;
 import com.alibaba.fastjson.JSONObject;
 import com.alibaba.fastjson.annotation.JSONField;
 import lombok.Getter;
+import lombok.NoArgsConstructor;
 import lombok.Setter;
 
 import java.io.Serializable;
@@ -18,11 +19,9 @@ import java.util.List;
  */
 @Getter
 @Setter
+@NoArgsConstructor
 public final class UserInfo implements Serializable {
-    private static final long serialVersionUID = 1L;
-
-    private UserInfo() {
-    }
+    private static final long serialVersionUID = 3117101379254847458L;
 
     @JSONField(name = "Uin")
     private Long uin;
diff --git a/src/main/java/com/hotlcc/wechat4j/model/WxMessage.java b/src/main/java/com/hotlcc/wechat4j/model/WxMessage.java
index 5125432..7b33423 100644
--- a/src/main/java/com/hotlcc/wechat4j/model/WxMessage.java
+++ b/src/main/java/com/hotlcc/wechat4j/model/WxMessage.java
@@ -14,7 +14,7 @@ import java.io.Serializable;
 @Getter
 @Setter
 public class WxMessage implements Serializable {
-    private static final long serialVersionUID = 1L;
+    private static final long serialVersionUID = 3090487762066388772L;
 
     @JSONField(name = "ClientMsgId")
     private String clientMsgId;