diff --git a/build.gradle b/build.gradle
index 1717e92..fa32020 100644
--- a/build.gradle
+++ b/build.gradle
@@ -12,7 +12,6 @@ application {
 
 dependencies {
     implementation project(":front-base")
-    implementation project(":sdk-java")
     // https://mvnrepository.com/artifact/com.jianggujin/IKAnalyzer-lucene
     implementation 'com.jianggujin:IKAnalyzer-lucene:8.0.0'
     // https://mvnrepository.com/artifact/org.apache.lucene/lucene-analyzers-common
diff --git a/src/main/java/org/bdware/server/nodecenter/FileActions.java b/src/main/java/org/bdware/server/nodecenter/FileActions.java
index 41acac1..cebb699 100644
--- a/src/main/java/org/bdware/server/nodecenter/FileActions.java
+++ b/src/main/java/org/bdware/server/nodecenter/FileActions.java
@@ -1,9 +1,6 @@
 package org.bdware.server.nodecenter;
 
-import com.google.gson.JsonArray;
 import com.google.gson.JsonObject;
-import com.google.gson.JsonParser;
-import com.jcraft.jsch.Session;
 import io.netty.buffer.Unpooled;
 import io.netty.channel.ChannelFuture;
 import io.netty.channel.ChannelFutureListener;
@@ -18,21 +15,13 @@ import org.bdware.sc.conn.ResultCallback;
 import org.bdware.sc.db.CMTables;
 import org.bdware.sc.db.KeyValueDBUtil;
 import org.bdware.sc.db.TimeDBUtil;
-import org.bdware.sc.http.HttpUtil;
 import org.bdware.sc.util.FileUtil;
 import org.bdware.sc.util.JsonUtil;
 import org.bdware.server.action.Action;
-
-
 import org.bdware.server.http.HttpMethod;
 import org.bdware.server.http.URIPath;
 import org.bdware.server.permission.Role;
-import org.bouncycastle.crypto.CryptoException;
-import org.bouncycastle.pqc.math.linearalgebra.ByteUtils;
-import org.zz.gmhelper.SM2KeyPair;
 import org.zz.gmhelper.SM2Util;
-import org.bdware.client.SmartContractClient;
-
 
 import java.io.*;
 import java.lang.reflect.Method;
@@ -50,7 +39,6 @@ public class FileActions {
     static NodeCenterWSFrameHandler handler;
 
 
-
     public FileActions(NodeCenterWSFrameHandler nodeCenterWSFrameHandler) {
         handler = nodeCenterWSFrameHandler;
     }
@@ -478,4 +466,4 @@ public class FileActions {
         List<FileItem> subFiles;
     }
 
-   }
+}