diff --git a/common/src/main/java/cn/wildfirechat/pojos/ConferenceJoinEvent.java b/common/src/main/java/cn/wildfirechat/pojos/ConferenceJoinEvent.java
index 2fb0585c..2f2822a4 100644
--- a/common/src/main/java/cn/wildfirechat/pojos/ConferenceJoinEvent.java
+++ b/common/src/main/java/cn/wildfirechat/pojos/ConferenceJoinEvent.java
@@ -3,4 +3,5 @@ package cn.wildfirechat.pojos;
 public class ConferenceJoinEvent {
     public String userId;
     public String roomId;
+    public boolean screenSharing;
 }
diff --git a/common/src/main/java/cn/wildfirechat/pojos/ConferenceLeaveEvent.java b/common/src/main/java/cn/wildfirechat/pojos/ConferenceLeaveEvent.java
index fa13beac..9da10f4a 100644
--- a/common/src/main/java/cn/wildfirechat/pojos/ConferenceLeaveEvent.java
+++ b/common/src/main/java/cn/wildfirechat/pojos/ConferenceLeaveEvent.java
@@ -3,4 +3,5 @@ package cn.wildfirechat.pojos;
 public class ConferenceLeaveEvent {
     public String userId;
     public String roomId;
+    public boolean screenSharing;
 }
diff --git a/common/src/main/java/cn/wildfirechat/pojos/ConferencePublishEvent.java b/common/src/main/java/cn/wildfirechat/pojos/ConferencePublishEvent.java
index cca79146..042fd2dc 100644
--- a/common/src/main/java/cn/wildfirechat/pojos/ConferencePublishEvent.java
+++ b/common/src/main/java/cn/wildfirechat/pojos/ConferencePublishEvent.java
@@ -4,4 +4,5 @@ public class ConferencePublishEvent {
     public String userId;
     public boolean video;
     public String roomId;
+    public boolean screenSharing;
 }
diff --git a/common/src/main/java/cn/wildfirechat/pojos/ConferenceUnpublishEvent.java b/common/src/main/java/cn/wildfirechat/pojos/ConferenceUnpublishEvent.java
index 20155809..c79f1a05 100644
--- a/common/src/main/java/cn/wildfirechat/pojos/ConferenceUnpublishEvent.java
+++ b/common/src/main/java/cn/wildfirechat/pojos/ConferenceUnpublishEvent.java
@@ -3,4 +3,5 @@ package cn.wildfirechat.pojos;
 public class ConferenceUnpublishEvent {
     public String userId;
     public String roomId;
+    public boolean screenSharing;
 }
diff --git a/common/src/main/java/cn/wildfirechat/pojos/ForwardDeviceMessageData.java b/common/src/main/java/cn/wildfirechat/pojos/ForwardDeviceMessageData.java
index c171cbbb..1f5184b2 100644
--- a/common/src/main/java/cn/wildfirechat/pojos/ForwardDeviceMessageData.java
+++ b/common/src/main/java/cn/wildfirechat/pojos/ForwardDeviceMessageData.java
@@ -18,6 +18,9 @@ public class ForwardDeviceMessageData {
     private int type;
     private byte[] data;
 
+    public ForwardDeviceMessageData() {
+    }
+
     public ForwardDeviceMessageData(String deviceId, int type, byte[] data) {
         this.deviceId = deviceId;
         this.type = type;
diff --git a/common/src/main/java/cn/wildfirechat/pojos/GroupNotificationBinaryContent.java b/common/src/main/java/cn/wildfirechat/pojos/GroupNotificationBinaryContent.java
index f12d69b6..14e89ce7 100644
--- a/common/src/main/java/cn/wildfirechat/pojos/GroupNotificationBinaryContent.java
+++ b/common/src/main/java/cn/wildfirechat/pojos/GroupNotificationBinaryContent.java
@@ -31,6 +31,9 @@ public class GroupNotificationBinaryContent {
     //value2(member or something)
     private String m;
 
+    public GroupNotificationBinaryContent() {
+    }
+
     public GroupNotificationBinaryContent(String g, String o, String n, String m) {
         this.g = g;
         this.o = o;
diff --git a/common/src/main/java/cn/wildfirechat/pojos/InputChatroomMute.java b/common/src/main/java/cn/wildfirechat/pojos/InputChatroomMute.java
index 0ba22d32..17310dc1 100755
--- a/common/src/main/java/cn/wildfirechat/pojos/InputChatroomMute.java
+++ b/common/src/main/java/cn/wildfirechat/pojos/InputChatroomMute.java
@@ -13,6 +13,9 @@ public class InputChatroomMute {
     private String chatroomId;
     private int status;
 
+    public InputChatroomMute() {
+    }
+
     public InputChatroomMute(String chatroomId, int status) {
         this.chatroomId = chatroomId;
         this.status = status;
diff --git a/common/src/main/java/cn/wildfirechat/pojos/InputGetToken.java b/common/src/main/java/cn/wildfirechat/pojos/InputGetToken.java
index 1330bbf2..67340fce 100755
--- a/common/src/main/java/cn/wildfirechat/pojos/InputGetToken.java
+++ b/common/src/main/java/cn/wildfirechat/pojos/InputGetToken.java
@@ -5,6 +5,9 @@ public class InputGetToken {
     private String clientId;
     private Integer platform;
 
+    public InputGetToken() {
+    }
+
     public InputGetToken(String userId, String clientId, int platform) {
         this.userId = userId;
         this.clientId = clientId;
diff --git a/common/src/main/java/cn/wildfirechat/pojos/InputGetUserInfo.java b/common/src/main/java/cn/wildfirechat/pojos/InputGetUserInfo.java
index efc05a9b..abf9f178 100755
--- a/common/src/main/java/cn/wildfirechat/pojos/InputGetUserInfo.java
+++ b/common/src/main/java/cn/wildfirechat/pojos/InputGetUserInfo.java
@@ -13,6 +13,9 @@ public class InputGetUserInfo {
     private String name;
     private String mobile;
 
+    public InputGetUserInfo() {
+    }
+
     public InputGetUserInfo(String userId, String name, String mobile) {
         this.userId = userId;
         this.name = name;
diff --git a/common/src/main/java/cn/wildfirechat/pojos/InputOutputUserBlockStatus.java b/common/src/main/java/cn/wildfirechat/pojos/InputOutputUserBlockStatus.java
index fe3188b0..8256a51c 100755
--- a/common/src/main/java/cn/wildfirechat/pojos/InputOutputUserBlockStatus.java
+++ b/common/src/main/java/cn/wildfirechat/pojos/InputOutputUserBlockStatus.java
@@ -13,6 +13,9 @@ public class InputOutputUserBlockStatus {
     private String userId;
     private int status;
 
+    public InputOutputUserBlockStatus() {
+    }
+
     public InputOutputUserBlockStatus(String userId, int status) {
         this.userId = userId;
         this.status = status;
diff --git a/common/src/main/java/cn/wildfirechat/pojos/OutputCreateDevice.java b/common/src/main/java/cn/wildfirechat/pojos/OutputCreateDevice.java
index b5590055..0cb72bf9 100755
--- a/common/src/main/java/cn/wildfirechat/pojos/OutputCreateDevice.java
+++ b/common/src/main/java/cn/wildfirechat/pojos/OutputCreateDevice.java
@@ -13,6 +13,9 @@ public class OutputCreateDevice {
     private String token;
     private String secret;
 
+    public OutputCreateDevice() {
+    }
+
     public OutputCreateDevice(String userId, String token, String secret) {
         this.deviceId = userId;
         this.token = token;
diff --git a/common/src/main/java/cn/wildfirechat/pojos/OutputCreateRobot.java b/common/src/main/java/cn/wildfirechat/pojos/OutputCreateRobot.java
index 4ce722c0..e42b7637 100755
--- a/common/src/main/java/cn/wildfirechat/pojos/OutputCreateRobot.java
+++ b/common/src/main/java/cn/wildfirechat/pojos/OutputCreateRobot.java
@@ -12,6 +12,9 @@ public class OutputCreateRobot {
     private String userId;
     private String secret;
 
+    public OutputCreateRobot() {
+    }
+
     public OutputCreateRobot(String userId, String secret) {
         this.userId = userId;
         this.secret = secret;
diff --git a/common/src/main/java/cn/wildfirechat/pojos/OutputCreateUser.java b/common/src/main/java/cn/wildfirechat/pojos/OutputCreateUser.java
index 4218ab4d..529cd2b7 100755
--- a/common/src/main/java/cn/wildfirechat/pojos/OutputCreateUser.java
+++ b/common/src/main/java/cn/wildfirechat/pojos/OutputCreateUser.java
@@ -12,6 +12,9 @@ public class OutputCreateUser {
     private String userId;
     private String name;
 
+    public OutputCreateUser() {
+    }
+
     public OutputCreateUser(String userId, String name) {
         this.userId = userId;
         this.name = name;
diff --git a/common/src/main/java/cn/wildfirechat/pojos/OutputDevice.java b/common/src/main/java/cn/wildfirechat/pojos/OutputDevice.java
index 95fad61a..70faf56c 100755
--- a/common/src/main/java/cn/wildfirechat/pojos/OutputDevice.java
+++ b/common/src/main/java/cn/wildfirechat/pojos/OutputDevice.java
@@ -20,6 +20,9 @@ public class OutputDevice {
     private List<String> owners;
     private String extra;
 
+    public OutputDevice() {
+    }
+
     public OutputDevice(String deviceId, String token, String secret) {
         this.deviceId = deviceId;
         this.token = token;
diff --git a/common/src/main/java/cn/wildfirechat/pojos/OutputLoginData.java b/common/src/main/java/cn/wildfirechat/pojos/OutputLoginData.java
index 822ff6f4..3194bb1b 100755
--- a/common/src/main/java/cn/wildfirechat/pojos/OutputLoginData.java
+++ b/common/src/main/java/cn/wildfirechat/pojos/OutputLoginData.java
@@ -14,6 +14,9 @@ public class OutputLoginData {
     private String userId;
     private String token;
 
+    public OutputLoginData() {
+    }
+
     public OutputLoginData(String userId, String token) {
         this.userId = userId;
         this.token = token;
diff --git a/common/src/main/java/cn/wildfirechat/pojos/OutputNotifyChannelSubscribeStatus.java b/common/src/main/java/cn/wildfirechat/pojos/OutputNotifyChannelSubscribeStatus.java
index a9e1fdd0..a4946a9c 100755
--- a/common/src/main/java/cn/wildfirechat/pojos/OutputNotifyChannelSubscribeStatus.java
+++ b/common/src/main/java/cn/wildfirechat/pojos/OutputNotifyChannelSubscribeStatus.java
@@ -13,6 +13,9 @@ public class OutputNotifyChannelSubscribeStatus {
     private String channelId;
     private int status;
 
+    public OutputNotifyChannelSubscribeStatus() {
+    }
+
     public OutputNotifyChannelSubscribeStatus(String userId, String channelId, boolean subscirbed) {
         this.userId = userId;
         this.channelId = channelId;
diff --git a/common/src/main/java/cn/wildfirechat/pojos/OutputRouteData.java b/common/src/main/java/cn/wildfirechat/pojos/OutputRouteData.java
index eeca924e..619f814b 100755
--- a/common/src/main/java/cn/wildfirechat/pojos/OutputRouteData.java
+++ b/common/src/main/java/cn/wildfirechat/pojos/OutputRouteData.java
@@ -16,6 +16,9 @@ public class OutputRouteData { ;
     private int shortPort;
     private String secret;
 
+    public OutputRouteData() {
+    }
+
     public OutputRouteData(List<String> serverIPs, int longPort, int shortPort, String secret) {
         this.serverIPs = serverIPs;
         this.longPort = longPort;