diff --git a/src/main/java/cn/wzpmc/filemanager/controller/FileController.java b/src/main/java/cn/wzpmc/filemanager/controller/FileController.java
index 6df1ff5..afa596c 100644
--- a/src/main/java/cn/wzpmc/filemanager/controller/FileController.java
+++ b/src/main/java/cn/wzpmc/filemanager/controller/FileController.java
@@ -159,16 +159,32 @@ public class FileController {
         return type.equals(FileType.FILE) ? fileService.findFilePathById(id) : fileService.findFolderPathById(id);
     }
 
+    /**
+     * 获取需要上传的区块列表
+     * @param hash 文件分块后的所有hash值
+     * @return 需要上传的区块哈希和区块ID
+     */
     @PostMapping("/chunk/check")
     public Result<List<CheckChunkResult>> checkChunkUploaded(@RequestBody List<String> hash) {
         return fileService.checkChunkUploaded(hash);
     }
 
+    /**
+     * 上传一个区块
+     * @param block 区块文件
+     * @return 上传的区块ID
+     */
     @PostMapping("/chunk/upload")
     public Result<Long> uploadChunk(@RequestBody MultipartFile block) {
         return fileService.uploadChunk(block);
     }
 
+
+    /**
+     * 将区块保存为文件
+     * @param request 保存文件请求
+     * @return 保存后的文件
+     */
     @PutMapping("/chunk/save")
     public Result<FileVo> saveFile(@RequestBody SaveChunksRequest request) {
         return fileService.saveFile(request);
diff --git a/src/main/java/cn/wzpmc/filemanager/entities/chunk/CheckChunkResult.java b/src/main/java/cn/wzpmc/filemanager/entities/chunk/CheckChunkResult.java
index cf49a01..2a6af85 100644
--- a/src/main/java/cn/wzpmc/filemanager/entities/chunk/CheckChunkResult.java
+++ b/src/main/java/cn/wzpmc/filemanager/entities/chunk/CheckChunkResult.java
@@ -6,6 +6,12 @@ import lombok.Data;
 @Data
 @AllArgsConstructor
 public class CheckChunkResult {
+    /**
+     * 区块哈希值
+     */
     private String hash;
+    /**
+     * 区块ID（当区块存在时，存在的区块ID）
+     */
     private Long chunkId;
 }
diff --git a/src/main/java/cn/wzpmc/filemanager/entities/chunk/SaveChunksRequest.java b/src/main/java/cn/wzpmc/filemanager/entities/chunk/SaveChunksRequest.java
index f0340bf..97074d4 100644
--- a/src/main/java/cn/wzpmc/filemanager/entities/chunk/SaveChunksRequest.java
+++ b/src/main/java/cn/wzpmc/filemanager/entities/chunk/SaveChunksRequest.java
@@ -6,7 +6,16 @@ import java.util.List;
 
 @Data
 public class SaveChunksRequest {
+    /**
+     * 文件名
+     */
     private String filename;
+    /**
+     * 区块列表
+     */
     private List<Long> chunks;
+    /**
+     * 文件夹ID（根目录为-1）
+     */
     private Long folderId;
 }
diff --git a/src/main/java/cn/wzpmc/filemanager/entities/vo/ChunkFileVo.java b/src/main/java/cn/wzpmc/filemanager/entities/vo/ChunkFileVo.java
index 4c30162..50119f1 100644
--- a/src/main/java/cn/wzpmc/filemanager/entities/vo/ChunkFileVo.java
+++ b/src/main/java/cn/wzpmc/filemanager/entities/vo/ChunkFileVo.java
@@ -9,9 +9,18 @@ import lombok.Data;
 @Data
 @AllArgsConstructor
 public class ChunkFileVo {
+    /**
+     * 区块ID
+     */
     @Column("chunk_id")
     private long chunkId;
+    /**
+     * 文件ID
+     */
     @Column("file_id")
     private long fileId;
+    /**
+     * 区块顺序下标（从0开始）
+     */
     private long index;
 }
diff --git a/src/main/java/cn/wzpmc/filemanager/entities/vo/ChunksVo.java b/src/main/java/cn/wzpmc/filemanager/entities/vo/ChunksVo.java
index 86368cd..4d2d3c8 100644
--- a/src/main/java/cn/wzpmc/filemanager/entities/vo/ChunksVo.java
+++ b/src/main/java/cn/wzpmc/filemanager/entities/vo/ChunksVo.java
@@ -8,8 +8,17 @@ import lombok.Data;
 @Table("chunks")
 @Data
 public class ChunksVo {
+    /**
+     * 区块ID
+     */
     @Id(keyType = KeyType.Auto)
     private long id;
+    /**
+     * 区块哈希值
+     */
     private String hash;
+    /**
+     * 区块大小
+     */
     private long size;
 }
diff --git a/src/main/java/cn/wzpmc/filemanager/service/FileService.java b/src/main/java/cn/wzpmc/filemanager/service/FileService.java
index 5df97ab..330e012 100644
--- a/src/main/java/cn/wzpmc/filemanager/service/FileService.java
+++ b/src/main/java/cn/wzpmc/filemanager/service/FileService.java
@@ -49,10 +49,7 @@ import org.springframework.web.multipart.MultipartHttpServletRequest;
 import java.io.*;
 import java.nio.charset.StandardCharsets;
 import java.security.MessageDigest;
-import java.util.Date;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicLong;
 
@@ -148,6 +145,10 @@ public class FileService {
             if (fieldName.equals("file")) {
                 String name = next.getName();
                 FilenameDescription filename = getFilename(name);
+                Optional<Result<FileVo>> illegalResult = filename.checkIllegal();
+                if (illegalResult.isPresent()) {
+                    return illegalResult.get();
+                }
                 String start = filename.name();
                 String extName = filename.ext();
                 if (fileMapper.selectCountByCondition(FILE_VO.NAME.eq(start).and(FILE_VO.EXT.eq(extName)).and(FILE_VO.FOLDER.eq(folderParams))) > 0) {
@@ -229,6 +230,12 @@ public class FileService {
     public Result<FolderVo> mkdir(FolderCreateRequest request, UserVo user, String address) {
         String name = request.getName();
         long parent = request.getParent();
+        if (name.isEmpty()) {
+            return Result.failed(HttpStatus.BAD_REQUEST, "文件名不可为空！");
+        }
+        if (name.length() > 160) {
+            return Result.failed(HttpStatus.PAYLOAD_TOO_LARGE, "文件夹名称过长，无法创建！");
+        }
         if (fileMapper.selectCountByCondition(FILE_VO.EXT.eq(null_()).and(FILE_VO.NAME.eq(name)).and(FILE_VO.FOLDER.eq(parent))) > 0) {
             return Result.failed(HttpStatus.CONFLICT, "创建文件夹失败，同名文件已存在！");
         }
@@ -479,8 +486,13 @@ public class FileService {
     @Transactional
     public Result<FileVo> saveFile(SaveChunksRequest chunks) {
         FilenameDescription filename = getFilename(chunks.getFilename());
+        Optional<Result<FileVo>> illegalResult = filename.checkIllegal();
+        if (illegalResult.isPresent()) {
+            return illegalResult.get();
+        }
         String name = filename.name();
         String ext = filename.ext();
+
         Long folderId = chunks.getFolderId();
         if (fileMapper.selectCountByCondition(FILE_VO.FOLDER.eq(folderId).and(FILE_VO.NAME.eq(name)).and(FILE_VO.EXT.eq(ext))) > 0) {
             return Result.failed(HttpStatus.CONFLICT, "文件已存在！");
@@ -488,8 +500,7 @@ public class FileService {
         FileVo fileVo = new FileVo();
         List<Long> chunkIds = chunks.getChunks();
         List<ChunksVo> chunksVos = chunksMapper.selectListByIds(chunkIds);
-        //noinspection OptionalGetWithoutIsPresent
-        List<ChunksVo> sortedChunks = chunkIds.stream().map(e -> chunksVos.stream().filter(a -> a.getId() == e).findFirst().get()).toList();
+        List<ChunksVo> sortedChunks = chunkIds.stream().map(e -> chunksVos.stream().filter(a -> a.getId() == e).findFirst().orElseThrow()).toList();
         String mime;
         String sha512;
         long size;
@@ -528,5 +539,14 @@ public class FileService {
     }
 
     private record FilenameDescription(String name, String ext) {
+        public <T> Optional<Result<T>> checkIllegal() {
+            if (name.length() > 120 || ext.length() > 40) {
+                return Optional.of(Result.failed(HttpStatus.PAYLOAD_TOO_LARGE, "文件名过长，无法上传！"));
+            }
+            if (name.isEmpty()) {
+                return Optional.of(Result.failed(HttpStatus.BAD_REQUEST, "文件名为空，无法上传！"));
+            }
+            return Optional.empty();
+        }
     }
 }
\ No newline at end of file
diff --git a/src/main/java/cn/wzpmc/filemanager/service/UserService.java b/src/main/java/cn/wzpmc/filemanager/service/UserService.java
index f21a1c9..92d95ad 100644
--- a/src/main/java/cn/wzpmc/filemanager/service/UserService.java
+++ b/src/main/java/cn/wzpmc/filemanager/service/UserService.java
@@ -21,8 +21,6 @@ import org.springframework.data.redis.core.ValueOperations;
 import org.springframework.http.HttpStatus;
 import org.springframework.stereotype.Service;
 
-import java.util.ArrayList;
-import java.util.Iterator;
 import java.util.concurrent.TimeUnit;
 
 import static cn.wzpmc.filemanager.entities.vo.table.UserVoTableDef.USER_VO;
@@ -70,6 +68,10 @@ public class UserService {
     public void register(UserRegisterRequest request, HttpServletResponse response, String address) {
         String username = request.getUsername();
         String password = request.getPassword();
+        if (username == null || password == null || username.isEmpty() || password.isEmpty()) {
+            Result.failed(HttpStatus.BAD_REQUEST, "用户名/密码不可为空！").writeToResponse(response);
+            return;
+        }
         String sha1edPassword = DigestUtils.sha1Hex(password);
         Auth auth = request.getAuth();
         if (this.userMapper.selectCountByCondition(USER_VO.NAME.eq(username)) > 0) {
diff --git a/src/main/resources/cn/wzpmc/filemanager/mapper/InitializationMapper.xml b/src/main/resources/cn/wzpmc/filemanager/mapper/InitializationMapper.xml
index 9d76d9e..f3999e4 100644
--- a/src/main/resources/cn/wzpmc/filemanager/mapper/InitializationMapper.xml
+++ b/src/main/resources/cn/wzpmc/filemanager/mapper/InitializationMapper.xml
@@ -7,7 +7,7 @@
         CREATE TABLE IF NOT EXISTS `file`
         (
         `id` int NOT NULL AUTO_INCREMENT COMMENT '文件ID',
-        `name` varchar(40) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL COMMENT '文件名',
+        `name` varchar(120) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL COMMENT '文件名',
         `ext` varchar(40) COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT '文件扩展名',
         `mime` varchar(100) COLLATE utf8mb4_general_ci NOT NULL COMMENT '文件的MIME类型',
         `hash` char(128) COLLATE utf8mb4_general_ci NOT NULL COMMENT '文件sha512',
@@ -31,7 +31,7 @@
         CREATE TABLE IF NOT EXISTS `folder`
         (
         `id` int NOT NULL AUTO_INCREMENT COMMENT '文件夹ID',
-        `name` varchar(80) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL COMMENT '文件夹名称',
+        `name` varchar(160) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL COMMENT '文件夹名称',
         `parent` int DEFAULT NULL COMMENT '父文件夹ID',
         `creator` int DEFAULT NULL COMMENT '创建者ID',
         `create_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',