fix: 修复挂载文件无法通过位置跳转的问题

src/main/java/com/jmal/clouddisk/controller/rest/ShareController.java

@@ -283,4 +283,11 @@ public ResponseResult<Object> getFileById(HttpServletRequest request, @RequestPa
         return ResultUtil.success(fileService.getById(fileId));
     }
 
+    @Operation(summary = "挂用户获取分享文件信息")
+    @GetMapping("/mount/file_info")
+    @LogOperatingFun(logType = LogOperation.Type.BROWSE)
+    public ResponseResult<Map<String, String>> getMountFileInfo(@RequestParam String fileId, @RequestParam String fileUsername) {
+        return ResultUtil.success(shareService.getMountFileInfo(fileId, fileUsername));
+    }
+
 }

src/main/java/com/jmal/clouddisk/service/IShareService.java

@@ -7,6 +7,7 @@
 import com.jmal.clouddisk.util.ResponseResult;
 
 import java.util.List;
+import java.util.Map;
 
 /**
  * @Description IShareService
@@ -117,4 +118,12 @@ public interface IShareService {
      * @return ResponseResult
      */
     ResponseResult<Object> generateShareToken(String fileId);
+
+    /**
+     * 获取挂载文件信息
+     * @param fileId fileId
+     * @param fileUsername fileUsername
+     * @return ResponseResult
+     */
+    Map<String, String> getMountFileInfo(String fileId, String fileUsername);
 }

src/main/java/com/jmal/clouddisk/service/impl/ShareServiceImpl.java

@@ -31,8 +31,10 @@
 import java.time.LocalDateTime;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Map;
 
 import static com.jmal.clouddisk.controller.rest.ShareController.SHARE_EXPIRED;
+import static com.jmal.clouddisk.webdav.MyWebdavServlet.PATH_DELIMITER;
 
 /**
  * @Description 分享
@@ -118,6 +120,7 @@ private void setShortId(ShareDO share, ShareDO shareDO) {
 
     /**
      * 生成5-8位短链接字符串
+     *
      * @return 链接字符串
      */
     private String generateShortId(ShareDO share) {
@@ -294,14 +297,45 @@ public ResponseResult<Object> generateShareToken(String fileId) {
             return ResultUtil.warning("分享不存在或不是私密分享");
         }
         if (!fileDocument.getUserId().equals(userLoginHolder.getUserId()) && !existsMountFile(shareDO.getFileId(), userLoginHolder.getUserId())) {
-                return ResultUtil.error(ExceptionType.PERMISSION_DENIED);
-            }
+            return ResultUtil.error(ExceptionType.PERMISSION_DENIED);
+        }
 
         // 生成share-token, share-token有效期等于分享有效期
         String shareToken = TokenUtil.createToken(shareDO.getId(), shareDO.getExpireDate());
         return ResultUtil.success(shareToken);
     }
 
+    @Override
+    public Map<String, String> getMountFileInfo(String fileId, String fileUsername) {
+        // 1.获取文件信息
+        FileDocument fileDocument = fileService.getById(fileId);
+        // 2. 获取分享信息
+        ShareDO shareDO = getShare(fileDocument.getShareId());
+        // 3. 获取基础分享文件信息
+        FileDocument shareBaseFile = fileService.getById(shareDO.getFileId());
+        // 4.获取挂载信息
+        FileDocument mountFile = getMountFile(shareDO.getFileId(), userLoginHolder.getUserId());
+        if (mountFile == null) {
+            throw new CommonException(ExceptionType.WARNING.getCode(), "挂载文件不存在");
+        }
+        // 5.获取文件上父级目录信息
+        String parentName = Paths.get(fileDocument.getPath()).toFile().getName();
+        String parentPath = Paths.get(fileDocument.getPath()).getParent().toString();
+        if (parentPath.length() > 1) {
+            parentPath = parentPath + PATH_DELIMITER;
+        }
+        FileDocument folderInfo = fileService.getFileDocumentByPathAndName(parentPath, parentName, fileUsername);
+        if (folderInfo == null) {
+            return Map.of();
+        }
+        String path = mountFile.getPath() + fileDocument.getPath().substring(shareBaseFile.getPath().length());
+        String folder = folderInfo.getId();
+        return Map.of(
+                "path", path,
+                "folder", folder
+        );
+    }
+
     public void validShare(String shareToken, ShareDO shareDO) {
         if (checkWhetherExpired(shareDO)) {
             throw new CommonException(ExceptionType.WARNING.getCode(), SHARE_EXPIRED);
@@ -360,6 +394,7 @@ public void validShareCode(String shareToken, ShareDO shareDO) {
 
     /**
      * 分享验证失败·
+     *
      * @param shareDO 分享信息
      */
     private static void shareValidFailed(ShareDO shareDO) {
@@ -371,10 +406,20 @@ private static void shareValidFailed(ShareDO shareDO) {
     }
 
     private boolean existsMountFile(String fileId, String userId) {
+        Query query = getMountQuery(fileId, userId);
+        return mongoTemplate.exists(query, FileDocument.class);
+    }
+
+    private FileDocument getMountFile(String fileId, String userId) {
+        Query query = getMountQuery(fileId, userId);
+        return mongoTemplate.findOne(query, FileDocument.class);
+    }
+
+    private static Query getMountQuery(String fileId, String userId) {
         Query query = new Query();
         query.addCriteria(Criteria.where("mountFileId").is(fileId));
         query.addCriteria(Criteria.where(IUserService.USER_ID).is(userId));
-        return mongoTemplate.exists(query, FileDocument.class);
+        return query;
     }
 
     @Override
@@ -395,6 +440,7 @@ public ShareDO getShareByFileId(String fileId) {
 
     /**
      * 检查是否过期
+     *
      * @param shareDO 分享信息
      * @return 是否过期 true:过期 false:未过期
      */
@@ -496,6 +542,7 @@ public ResponseResult<Object> cancelShare(String[] shareId) {
 
     /**
      * 移除share属性
+     *
      * @param shareDO ShareDO
      */
     private void removeShareProperty(ShareDO shareDO) {