diff --git a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/api/impl/WxCpMsgAuditServiceImpl.java b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/api/impl/WxCpMsgAuditServiceImpl.java
index fc4f7cef6..5ede317fb 100644
--- a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/api/impl/WxCpMsgAuditServiceImpl.java
+++ b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/api/impl/WxCpMsgAuditServiceImpl.java
@@ -196,12 +196,11 @@ public class WxCpMsgAuditServiceImpl implements WxCpMsgAuditService {
 
   @Override
   public void getMediaFile(@NonNull long sdk, @NonNull String sdkfileid, String proxy, String passwd, @NonNull long timeout, @NonNull Consumer<byte[]> action) throws WxErrorException {
-/**
- * 1、媒体文件每次拉取的最大size为512k，因此超过512k的文件需要分片拉取。
- * 2、若该文件未拉取完整，sdk的IsMediaDataFinish接口会返回0，同时通过GetOutIndexBuf接口返回下次拉取需要传入GetMediaData的indexbuf。
- * 3、indexbuf一般格式如右侧所示，”Range:bytes=524288-1048575“:表示这次拉取的是从524288到1048575的分片。单个文件首次拉取填写的indexbuf
- * 为空字符串，拉取后续分片时直接填入上次返回的indexbuf即可。
- */
+    /**
+     * 1、媒体文件每次拉取的最大size为512k，因此超过512k的文件需要分片拉取。
+     * 2、若该文件未拉取完整，sdk的IsMediaDataFinish接口会返回0，同时通过GetOutIndexBuf接口返回下次拉取需要传入GetMediaData的indexbuf。
+     * 3、indexbuf一般格式如右侧所示，”Range:bytes=524288-1048575“:表示这次拉取的是从524288到1048575的分片。单个文件首次拉取填写的indexbuf为空字符串，拉取后续分片时直接填入上次返回的indexbuf即可。
+     */
     String indexbuf = "";
     int ret, data_len = 0;
     log.debug("正在分片拉取媒体文件 sdkFileId为{}", sdkfileid);
@@ -215,8 +214,7 @@ public class WxCpMsgAuditServiceImpl implements WxCpMsgAuditService {
       }
 
       data_len += Finance.GetDataLen(mediaData);
-      log.info("正在分片拉取媒体文件 len:{}, data_len:{}, is_finis:{} \n", Finance.GetIndexLen(mediaData), data_len,
-        Finance.IsMediaDataFinish(mediaData));
+      log.debug("正在分片拉取媒体文件 len:{}, data_len:{}, is_finish:{} \n", Finance.GetIndexLen(mediaData), data_len, Finance.IsMediaDataFinish(mediaData));
 
       try {
         // 大于512k的文件会分片拉取，此处需要使用追加写，避免后面的分片覆盖之前的数据。
diff --git a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/bean/msgaudit/WxCpChatDatas.java b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/bean/msgaudit/WxCpChatDatas.java
index 89f021939..732da06a5 100644
--- a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/bean/msgaudit/WxCpChatDatas.java
+++ b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/bean/msgaudit/WxCpChatDatas.java
@@ -25,7 +25,7 @@ public class WxCpChatDatas implements Serializable {
   private String errMsg;
 
   @SerializedName("sdk")
-  private long sdk;
+  private Long sdk;
 
   @SerializedName("chatdata")
   private List<WxCpChatData> chatData;
diff --git a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/bean/msgaudit/WxCpChatModel.java b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/bean/msgaudit/WxCpChatModel.java
index 05098e5e0..d843cad6c 100644
--- a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/bean/msgaudit/WxCpChatModel.java
+++ b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/bean/msgaudit/WxCpChatModel.java
@@ -7,6 +7,7 @@ import lombok.Setter;
 import me.chanjar.weixin.cp.util.json.WxCpGsonBuilder;
 
 import java.io.Serializable;
+import java.math.BigInteger;
 import java.util.List;
 
 /**
@@ -844,8 +845,11 @@ public class WxCpChatModel implements Serializable {
   public static class Details implements Serializable {
     private static final long serialVersionUID = -5028321625140879571L;
 
+    /**
+     * 表项id Uint64类型
+     */
     @SerializedName("id")
-    private Long id;
+    private BigInteger id;
 
     @SerializedName("ques")
     private String ques;
@@ -943,8 +947,11 @@ public class WxCpChatModel implements Serializable {
     @SerializedName("meetingtype")
     private Integer meetingType;
 
+    /**
+     * 会议id Uint64类型
+     */
     @SerializedName("meetingid")
-    private Long meetingId;
+    private BigInteger meetingId;
 
     @SerializedName("status")
     private Integer status;
diff --git a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/bean/msgaudit/WxCpFileItem.java b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/bean/msgaudit/WxCpFileItem.java
index 384f29f75..35bbe36a1 100644
--- a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/bean/msgaudit/WxCpFileItem.java
+++ b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/bean/msgaudit/WxCpFileItem.java
@@ -5,6 +5,7 @@ import lombok.Data;
 import me.chanjar.weixin.cp.util.json.WxCpGsonBuilder;
 
 import java.io.Serializable;
+import java.math.BigInteger;
 
 /**
  * 会话存档 文档信息对象
@@ -25,8 +26,11 @@ public class WxCpFileItem implements Serializable {
   @SerializedName("sdkfileid")
   private String sdkFileId;
 
+  /**
+   * 共享文件的大小 Uint64类型
+   */
   @SerializedName("filesize")
-  private Long fileSize;
+  private BigInteger fileSize;
 
   /**
    * From json wx cp file item.
diff --git a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/util/crypto/WxCpCryptUtil.java b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/util/crypto/WxCpCryptUtil.java
index 835aa7979..08ea292b4 100755
--- a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/util/crypto/WxCpCryptUtil.java
+++ b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/util/crypto/WxCpCryptUtil.java
@@ -14,9 +14,11 @@ import java.security.PrivateKey;
 import java.security.spec.PKCS8EncodedKeySpec;
 import java.security.spec.RSAPrivateCrtKeySpec;
 import java.util.Base64;
+import java.util.Objects;
 
 /**
  * The type Wx cp crypt util.
+ *
  * @author qian
  */
 public class WxCpCryptUtil extends WxCryptUtil {
@@ -50,11 +52,11 @@ public class WxCpCryptUtil extends WxCryptUtil {
    * @throws Exception the exception
    */
   public static String decryptPriKey(String encryptRandomKey, String msgAuditPriKey, Integer pkcs1) throws Exception {
-    if (pkcs1 == null) {
+    if (Objects.isNull(pkcs1)) {
       throw new WxErrorException("请配置会话存档解密方式");
     }
 
-    if (pkcs1 == 1) {
+    if (Objects.equals(pkcs1, 1)) {
       return decryptPriKeyByPKCS1(encryptRandomKey, msgAuditPriKey);
     }
 
diff --git a/weixin-java-cp/src/test/java/me/chanjar/weixin/cp/api/WxCpMsgAuditTest.java b/weixin-java-cp/src/test/java/me/chanjar/weixin/cp/api/WxCpMsgAuditTest.java
index 740725cb8..ec7362ed5 100644
--- a/weixin-java-cp/src/test/java/me/chanjar/weixin/cp/api/WxCpMsgAuditTest.java
+++ b/weixin-java-cp/src/test/java/me/chanjar/weixin/cp/api/WxCpMsgAuditTest.java
@@ -18,10 +18,8 @@ import org.testng.annotations.Test;
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.InputStream;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Iterator;
-import java.util.List;
+import java.math.BigInteger;
+import java.util.*;
 
 /**
  * 企业微信会话内容存档测试类.
@@ -755,4 +753,48 @@ public class WxCpMsgAuditTest {
     }
     Finance.DestroySdk(chatDatas.getSdk());
   }
+
+  // 测试Uint64类型
+  public static void main(String[] args){
+    /*
+     * 会议邀请信息
+     */
+    String meeting = "{\"msgid\":\"5935786683775673543_1603877328\",\"action\":\"send\",\"from\":\"ken\"," +
+      "\"tolist\":[\"icef\",\"test\"],\"roomid\":\"wr2vOpDgAAN4zVWKbS\",\"msgtime\":1603877328914," +
+      "\"msgtype\":\"meeting\",\"meeting\":{\"topic\":\"夕会\",\"starttime\":1603877400,\"endtime\":1603881000," +
+      "\"address\":\"\",\"remarks\":\"\",\"meetingtype\":102,\"meetingid\":11101571002822706744,\"status\":1}}";
+    WxCpChatModel modelMeeting = WxCpChatModel.fromJson(meeting);
+    modelMeeting.getMeeting().getMeetingId();
+    System.out.println(modelMeeting.toJson());
+
+    /*
+     * 音频共享文档消息
+     */
+    String voipDocShare = "{\"msgid\":\"16527954622422422847_1594199256\",\"action\":\"send\"," +
+      "\"from\":\"18002520162\",\"tolist\":[\"wo137MCgAAYW6pIiKKrDe5SlzEhSgwbA\"],\"msgtime\":1594199235014," +
+      "\"msgtype\":\"voip_doc_share\",\"voipid\":\"gr2751c98b19300571f8afb3b74514bd32\"," +
+      "\"voip_doc_share\":{\"filename\":\"欢迎使用微盘.pdf.pdf\",\"md5sum\":\"ff893900f24e55e216e617a40e5c4648\"," +
+      "\"filesize\":11101571002822706744," +
+      "\"sdkfileid" +
+      "\":\"CpsBKjAqZUlLdWJMd2gvQ1JxMzd0ZjlpdW5mZzJOOE9JZm5kbndvRmRqdnBETjY0QlcvdGtHSFFTYm95dHM2VlllQXhkUUN5KzRmSy9KT3pudnA2aHhYZFlPemc2aVZ6YktzaVh3YkFPZHlqNnl2L2MvcGlqcVRjRTlhZEZsOGlGdHJpQ2RWSVNVUngrVFpuUmo3TGlPQ1BJemlRPT0SOE5EZGZNVFk0T0RnMU16YzVNVGt5T1RJMk9GODFNelUyTlRBd01qQmZNVFU1TkRFNU9USTFOZz09GiA3YTcwNmQ2Zjc5NjY3MDZjNjY2Zjc4NzI3NTZmN2E2YQ==\"}}";
+    WxCpChatModel modelVoipDocShare = WxCpChatModel.fromJson(voipDocShare);
+    System.out.println(modelVoipDocShare.toJson());
+
+    /*
+     * 填表消息
+     */
+    String collect = "{\"msgid\":\"2500536226619379797_1576034482\",\"action\":\"send\",\"from\":\"nick\"," +
+      "\"tolist\":[\"XuJinSheng\",\"15108264797\"],\"roomid\":\"wrjc7bDwYAOAhf9quEwRRxyyoMm0QAAA\"," +
+      "\"msgtime\":1576034482344,\"msgtype\":\"collect\",\"collect\":{\"room_name\":\"这是一个群\",\"creator\":\"nick\"," +
+      "\"create_time\":\"2019-12-11 11:21:22\",\"title\":\"这是填表title\",\"details\":[{\"id\":11101571002822706744,\"ques\":\"表项1，文本\"," +
+      "\"type\":\"Text\"},{\"id\":2,\"ques\":\"表项2，数字\",\"type\":\"Number\"},{\"id\":3,\"ques\":\"表项3，日期\"," +
+      "\"type\":\"Date\"},{\"id\":4,\"ques\":\"表项4，时间\",\"type\":\"Time\"}]}}";
+    WxCpChatModel modelCollect = WxCpChatModel.fromJson(collect);
+    System.out.println(modelCollect.toJson());
+
+    BigInteger id = modelCollect.getCollect().getDetails().get(0).getId();
+    System.out.println(id);
+
+  }
+
 }