diff --git a/yudao-module-infra/yudao-module-infra-server/src/main/java/cn/iocoder/yudao/module/infra/controller/admin/file/FileController.java b/yudao-module-infra/yudao-module-infra-server/src/main/java/cn/iocoder/yudao/module/infra/controller/admin/file/FileController.java
index 002417f4..dcb81546 100644
--- a/yudao-module-infra/yudao-module-infra-server/src/main/java/cn/iocoder/yudao/module/infra/controller/admin/file/FileController.java
+++ b/yudao-module-infra/yudao-module-infra-server/src/main/java/cn/iocoder/yudao/module/infra/controller/admin/file/FileController.java
@@ -21,6 +21,7 @@ import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import jakarta.validation.Valid;
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.HttpStatus;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.validation.annotation.Validated;
@@ -28,6 +29,8 @@ import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
 
 import java.io.IOException;
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
 
 import static cn.iocoder.yudao.framework.common.pojo.CommonResult.success;
 import static cn.iocoder.yudao.framework.security.core.util.SecurityFrameworkUtils.getLoginUserId;
@@ -45,6 +48,9 @@ public class FileController {
 
     @Resource
     private FileService fileService;
+    @Value("${yudao.kkfile:}")
+    private String onlinePreview;
+
 
     @PostMapping("/upload")
     @Operation(summary = "上传文件", description = "模式一：后端上传文件")
@@ -59,7 +65,13 @@ public class FileController {
     public CommonResult<FileRespVO> uploadWithReturn(FileUploadReqVO uploadReqVO) throws IOException {
         MultipartFile file = uploadReqVO.getFile();
         byte[] content = IoUtil.readBytes(file.getInputStream());
-        return success(fileService.createFileWhitReturn(content, file.getOriginalFilename(), uploadReqVO.getDirectory(), file.getContentType(), uploadReqVO.getEncrypt()));
+        FileRespVO fileWhitReturn = fileService.createFileWhitReturn(content, file.getOriginalFilename(), uploadReqVO.getDirectory(), file.getContentType(), uploadReqVO.getEncrypt());
+        if (StrUtil.isEmpty(onlinePreview) || StrUtil.isEmpty(fileWhitReturn.getUrl())) {
+            fileWhitReturn.setPreviewUrl(fileWhitReturn.getUrl());
+            return success(fileWhitReturn);
+        }
+        fileWhitReturn.setPreviewUrl(onlinePreview + URLEncoder.encode(fileWhitReturn.getUrl(), StandardCharsets.UTF_8));
+        return success(fileWhitReturn);
     }
 
     @GetMapping("/presigned-url")
@@ -147,12 +159,13 @@ public class FileController {
     @Operation(summary = "获取下载验证码")
     public CommonResult<String> preDownloadEncrypt(@RequestParam("fileId") Long fileId) {
         Long userId = getLoginUserId();
+        FileDO activeFileById = new FileDO();
         try {
+            activeFileById = fileService.getActiveFileById(fileId);
             fileService.generateFileVerificationCode(fileId, userId);
-            FileDO activeFileById = fileService.getActiveFileById(fileId);
             return CommonResult.customize(activeFileById.getName(), HttpStatus.OK.value(), "验证码已生成，请使用验证码下载文件");
         } catch (ServiceException e) {
-            return CommonResult.customize("生成验证码失败", HttpStatus.OK.value(), e.getMessage());
+            return CommonResult.customize(activeFileById.getName(), HttpStatus.BAD_REQUEST.value(), e.getMessage());
         }
     }
 }
diff --git a/yudao-module-infra/yudao-module-infra-server/src/main/java/cn/iocoder/yudao/module/infra/controller/admin/file/vo/file/FileRespVO.java b/yudao-module-infra/yudao-module-infra-server/src/main/java/cn/iocoder/yudao/module/infra/controller/admin/file/vo/file/FileRespVO.java
index a0357da1..bb20dad4 100644
--- a/yudao-module-infra/yudao-module-infra-server/src/main/java/cn/iocoder/yudao/module/infra/controller/admin/file/vo/file/FileRespVO.java
+++ b/yudao-module-infra/yudao-module-infra-server/src/main/java/cn/iocoder/yudao/module/infra/controller/admin/file/vo/file/FileRespVO.java
@@ -24,6 +24,10 @@ public class FileRespVO {
     @Schema(description = "文件 URL", requiredMode = Schema.RequiredMode.REQUIRED, example = "https://www.iocoder.cn/yudao.jpg")
     private String url;
 
+    // 附件预览地址
+    @Schema(description = "附件预览地址", example = "https://www.iocoder.cn/yudao.jpg")
+    private String previewUrl;
+
     @Schema(description = "文件MIME类型", example = "application/octet-stream")
     private String type;
 
diff --git a/yudao-module-infra/yudao-module-infra-server/src/main/java/cn/iocoder/yudao/module/infra/service/file/FileServiceImpl.java b/yudao-module-infra/yudao-module-infra-server/src/main/java/cn/iocoder/yudao/module/infra/service/file/FileServiceImpl.java
index 30c40410..61eae94f 100644
--- a/yudao-module-infra/yudao-module-infra-server/src/main/java/cn/iocoder/yudao/module/infra/service/file/FileServiceImpl.java
+++ b/yudao-module-infra/yudao-module-infra-server/src/main/java/cn/iocoder/yudao/module/infra/service/file/FileServiceImpl.java
@@ -5,7 +5,6 @@ import cn.hutool.core.io.FileUtil;
 import cn.hutool.core.lang.Assert;
 import cn.hutool.core.util.StrUtil;
 import cn.hutool.crypto.digest.DigestUtil;
-import cn.iocoder.yudao.framework.common.exception.ServiceException;
 import cn.iocoder.yudao.framework.common.pojo.PageResult;
 import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
 import cn.iocoder.yudao.module.infra.controller.admin.file.vo.file.FileCreateReqVO;
@@ -48,7 +47,7 @@ public class FileServiceImpl implements FileService {
 
     @Value("${yudao.AES.key}")
     private String aesKey;
-    @Value("${yudao.verify-code:''}")
+    @Value("${yudao.verify-code:}")
     private String fixedVerifyCode;
 
     @Resource
@@ -59,11 +58,7 @@ public class FileServiceImpl implements FileService {
         validateFileExists(fileId);
         String codeKey = String.format(RedisKeyConstants.FILE_VERIFICATION_CODE, userId, fileId);
         String userSetKey = String.format(RedisKeyConstants.FILE_VERIFICATION_CODE_USER_SET, userId);
-        try {
-            return VerificationCodeUtil.generateCode(codeKey, userSetKey, stringRedisTemplate);
-        } catch (ServiceException e) {
-            throw exception(FILE_CAPTCHA_GENERATE_FAIL, e.getMessage());
-        }
+        return VerificationCodeUtil.generateCode(codeKey, userSetKey, stringRedisTemplate);
     }
 
     @Override
diff --git a/yudao-module-infra/yudao-module-infra-server/src/main/java/cn/iocoder/yudao/module/infra/util/VerificationCodeUtil.java b/yudao-module-infra/yudao-module-infra-server/src/main/java/cn/iocoder/yudao/module/infra/util/VerificationCodeUtil.java
index c848270a..8487ec9b 100644
--- a/yudao-module-infra/yudao-module-infra-server/src/main/java/cn/iocoder/yudao/module/infra/util/VerificationCodeUtil.java
+++ b/yudao-module-infra/yudao-module-infra-server/src/main/java/cn/iocoder/yudao/module/infra/util/VerificationCodeUtil.java
@@ -28,13 +28,13 @@ public class VerificationCodeUtil {
         if (existCode != null) {
             Long ttl = redisTemplate.getExpire(codeKey, TimeUnit.SECONDS);
             if (ttl > 10) {
-                throw exception(FILE_CAPTCHA_EXISTS, "同一附件60秒内只能获取一次验证码");
+                throw exception(FILE_CAPTCHA_EXISTS, "当前附件已存在生效中的验证码");
             }
             // ttl <= 10 秒，允许重新获取
         }
         Long size = redisTemplate.opsForSet().size(userSetKey);
         if (size != null && size >= MAX_CODE_PER_USER) {
-            throw exception(FILE_CAPTCHA_MAX, "同一用户最多只能有10个有效验证码");
+            throw exception(FILE_CAPTCHA_MAX, "同一用户最多只能获取10个有效验证码");
         }
         String code = String.format("%06d", new Random().nextInt(1000000));
         redisTemplate.opsForValue().set(codeKey, code, CODE_EXPIRE_SECONDS, TimeUnit.SECONDS);
diff --git a/yudao-module-infra/yudao-module-infra-server/src/main/resources/application.yaml b/yudao-module-infra/yudao-module-infra-server/src/main/resources/application.yaml
index fce2bfd4..8abab8d4 100644
--- a/yudao-module-infra/yudao-module-infra-server/src/main/resources/application.yaml
+++ b/yudao-module-infra/yudao-module-infra-server/src/main/resources/application.yaml
@@ -132,6 +132,8 @@ yudao:
   # 附件加密相关配置
   AES:
     key: "0123456789abcdef0123456789abcdef"
+  # 附件预览
+  kkfile: "http://172.16.46.63:30012/onlinePreview?url="
   info:
     version: 1.0.0
     base-package: cn.iocoder.yudao.module.infra
diff --git a/yudao-server/src/main/resources/application-local.yaml b/yudao-server/src/main/resources/application-local.yaml
index 24977433..97d1543b 100644
--- a/yudao-server/src/main/resources/application-local.yaml
+++ b/yudao-server/src/main/resources/application-local.yaml
@@ -218,6 +218,8 @@ yudao:
   tencent-lbs-key: TVDBZ-TDILD-4ON4B-PFDZA-RNLKH-VVF6E # QQ 地图的密钥 https://lbs.qq.com/service/staticV2/staticGuide/staticDoc
   AES:
     key: "0123456789abcdef0123456789abcdef"
+  verify-code: 666666
+
 
 justauth:
   enabled: true