From 8f355d5a7388f0606098f8deb1df398c2e228606 Mon Sep 17 00:00:00 2001
From: xsx <825657193@qq.com>
Date: Mon, 20 Oct 2025 16:05:59 +0800
Subject: [PATCH] =?UTF-8?q?=E6=96=87=E4=BB=B6=E5=90=8D=E9=95=BF=E5=BA=A6?=
 =?UTF-8?q?=E9=99=90=E5=88=B6128=E5=AD=97=E7=AC=A6?=
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---
 .../main/java/com/bx/implatform/contant/Constant.java  |  5 +++++
 .../bx/implatform/service/impl/FileServiceImpl.java    | 10 ++++++++++
 2 files changed, 15 insertions(+)

diff --git a/im-platform/src/main/java/com/bx/implatform/contant/Constant.java b/im-platform/src/main/java/com/bx/implatform/contant/Constant.java
index 3884cd7..d255ba3 100644
--- a/im-platform/src/main/java/com/bx/implatform/contant/Constant.java
+++ b/im-platform/src/main/java/com/bx/implatform/contant/Constant.java
@@ -15,6 +15,11 @@ public final class Constant {
      */
     public static final Long MAX_FILE_SIZE = 20 * 1024 * 1024L;
 
+    /**
+     * 最大文件名长度
+     */
+    public static final Long MAX_FILE_NAME_LENGTH = 128L;
+
     /**
      * 大群人数上限
      */
diff --git a/im-platform/src/main/java/com/bx/implatform/service/impl/FileServiceImpl.java b/im-platform/src/main/java/com/bx/implatform/service/impl/FileServiceImpl.java
index 761f2dc..9eb4ce5 100644
--- a/im-platform/src/main/java/com/bx/implatform/service/impl/FileServiceImpl.java
+++ b/im-platform/src/main/java/com/bx/implatform/service/impl/FileServiceImpl.java
@@ -60,6 +60,8 @@ public class FileServiceImpl extends ServiceImpl<FileInfoMapper, FileInfo> imple
     public String uploadFile(MultipartFile file) {
         try {
             Long userId = SessionContext.getSession().getUserId();
+            // 文件名长度校验
+            checkFileNameLength(file);
             // 大小校验
             if (file.getSize() > Constant.MAX_FILE_SIZE) {
                 throw new GlobalException(ResultCode.PROGRAM_ERROR, "文件大小不能超过20M");
@@ -95,6 +97,8 @@ public class FileServiceImpl extends ServiceImpl<FileInfoMapper, FileInfo> imple
     public UploadImageVO uploadImage(MultipartFile file, Boolean isPermanent,Long thumbSize) {
         try {
             Long userId = SessionContext.getSession().getUserId();
+            // 文件名长度校验
+            checkFileNameLength(file);
             // 大小校验
             if (file.getSize() > Constant.MAX_IMAGE_SIZE) {
                 throw new GlobalException(ResultCode.PROGRAM_ERROR, "图片大小不能超过20M");
@@ -170,6 +174,7 @@ public class FileServiceImpl extends ServiceImpl<FileInfoMapper, FileInfo> imple
         LambdaQueryWrapper<FileInfo> wrapper = Wrappers.lambdaQuery();
         wrapper.eq(FileInfo::getMd5, md5);
         wrapper.eq(FileInfo::getFileType, fileType);
+        wrapper.last("limit 1");
         return getOne(wrapper);
     }
 
@@ -199,4 +204,9 @@ public class FileServiceImpl extends ServiceImpl<FileInfoMapper, FileInfo> imple
         this.save(fileInfo);
     }
 
+    private void checkFileNameLength(MultipartFile file){
+        if(file.getOriginalFilename().length() > Constant.MAX_FILE_NAME_LENGTH){
+            throw new GlobalException("文件名长度不能超过" + Constant.MAX_FILE_NAME_LENGTH);
+        }
+    }
 }