diff --git a/server/pom.xml b/server/pom.xml
index 064ff85e..60808d7d 100644
--- a/server/pom.xml
+++ b/server/pom.xml
@@ -105,11 +105,6 @@
             <artifactId>fr.opensagres.xdocreport.document</artifactId>
             <version>1.0.5</version>
         </dependency>
-        <dependency>
-            <groupId>commons-io</groupId>
-            <artifactId>commons-io</artifactId>
-            <version>2.4</version>
-        </dependency>
         <!-- 解压(apache) -->
         <dependency>
             <groupId>org.apache.commons</groupId>
diff --git a/server/src/main/java/cn/keking/service/impl/SimTextFilePreviewImpl.java b/server/src/main/java/cn/keking/service/impl/SimTextFilePreviewImpl.java
index 95156e85..2a2751cf 100644
--- a/server/src/main/java/cn/keking/service/impl/SimTextFilePreviewImpl.java
+++ b/server/src/main/java/cn/keking/service/impl/SimTextFilePreviewImpl.java
@@ -5,8 +5,8 @@ import cn.keking.model.ReturnResponse;
 import cn.keking.service.FilePreview;
 import cn.keking.utils.DownloadUtils;
 import cn.keking.utils.KkFileUtils;
+import jodd.io.FileUtil;
 import org.apache.commons.codec.binary.Base64;
-import org.apache.commons.io.FileUtils;
 import org.springframework.stereotype.Service;
 import org.springframework.ui.Model;
 
@@ -36,7 +36,7 @@ public class SimTextFilePreviewImpl implements FilePreview {
         try {
             File originFile = new File(response.getContent());
             String charset = KkFileUtils.getFileEncode(originFile);
-            String fileData = FileUtils.readFileToString(originFile, charset);
+            String fileData = FileUtil.readString(originFile, charset);
             model.addAttribute("textData", Base64.encodeBase64String(fileData.getBytes()));
         } catch (IOException e) {
             return otherFilePreview.notSupportedFile(model, fileAttribute, e.getLocalizedMessage());
diff --git a/server/src/main/java/cn/keking/utils/DownloadUtils.java b/server/src/main/java/cn/keking/utils/DownloadUtils.java
index 76f03c50..1ba05cff 100644
--- a/server/src/main/java/cn/keking/utils/DownloadUtils.java
+++ b/server/src/main/java/cn/keking/utils/DownloadUtils.java
@@ -4,7 +4,8 @@ import cn.keking.config.ConfigConstants;
 import cn.keking.model.FileAttribute;
 import cn.keking.model.ReturnResponse;
 import io.mola.galimatias.GalimatiasParseException;
-import org.apache.commons.io.FileUtils;
+import jodd.io.FileUtil;
+import jodd.io.NetUtil;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -39,7 +40,7 @@ public class DownloadUtils {
             URL url = WebUtils.normalizedURL(urlStr);
             if (isHttpUrl(url)) {
                 File realFile = new File(realPath);
-                FileUtils.copyURLToFile(url, realFile);
+                NetUtil.downloadFile(url.toString(),realFile);
             } else if (isFtpUrl(url)) {
                 String ftpUsername = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_FTP_USERNAME);
                 String ftpPassword = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_FTP_PASSWORD);
diff --git a/server/src/main/java/cn/keking/web/controller/OnlinePreviewController.java b/server/src/main/java/cn/keking/web/controller/OnlinePreviewController.java
index c11cc406..5d6c644d 100644
--- a/server/src/main/java/cn/keking/web/controller/OnlinePreviewController.java
+++ b/server/src/main/java/cn/keking/web/controller/OnlinePreviewController.java
@@ -8,9 +8,10 @@ import cn.keking.service.cache.CacheService;
 import cn.keking.service.impl.OtherFilePreviewImpl;
 import cn.keking.service.FileHandlerService;
 import cn.keking.utils.WebUtils;
+import fr.opensagres.xdocreport.core.io.IOUtils;
 import io.mola.galimatias.GalimatiasParseException;
+import jodd.io.NetUtil;
 import org.apache.commons.codec.binary.Base64;
-import org.apache.commons.io.IOUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.stereotype.Controller;
@@ -103,7 +104,7 @@ public class OnlinePreviewController {
         logger.info("下载跨域pdf文件url：{}", urlPath);
         try {
             URL url = WebUtils.normalizedURL(urlPath);
-            byte[] bytes = IOUtils.toByteArray(url);
+            byte[] bytes = NetUtil.downloadBytes(url.toString());
             IOUtils.write(bytes, response.getOutputStream());
         } catch (IOException | GalimatiasParseException e) {
             logger.error("下载跨域pdf文件异常，url：{}", urlPath, e);