ftp服务器上传

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6 天以前 5f467d39b6bcca41c0720493c1f6e68c77ea89e4

ftp服务器上传

 StandardInterface/MES.Service/service/QC/LljService.cs

@@ -313,10 +313,18 @@

    public List<QamftpDto> GetAttachments(string releaseNo)
    {
        if (string.IsNullOrEmpty(releaseNo))
        {
            throw new ArgumentException("检验单号不能为空");
        }
        
        var db = SqlSugarHelper.GetInstance();
        try
        {
        return db.Queryable<MesQamftp>()
            .Where(x => x.ReleaseNo == releaseNo)
            .OrderBy(x => x.Fdate, OrderByType.Desc)
                // .ThenBy(x => x.CreateDate, OrderByType.Desc)
            .Select(x => new QamftpDto
            {
                Id = x.Id,
@@ -336,6 +344,168 @@
                ItemId = x.ItemId
            }).ToList();
    }
        catch (Exception ex)
        {
            throw new Exception($"查询附件信息失败: {ex.Message}");
        }
    }

    public byte[] GetFtpFile(string itemNo, string fileName, string ftpServer)
    {
        // 参数验证
        if (string.IsNullOrEmpty(itemNo) || string.IsNullOrEmpty(fileName) || string.IsNullOrEmpty(ftpServer))
        {
            throw new ArgumentException("参数不能为空: itemNo, fileName, ftpServer");
        }
        
        string ftpUser = "hm_ftp";
        string ftpPwd = "dell_123";
        
        // 标准化FTP服务器地址
        string normalizedServer = NormalizeFtpServer(ftpServer);
        
        // 构建FTP文件路径
        string ftpPath = $"{normalizedServer}/IQC/{itemNo}/{fileName}";
        
        try
        {
            var request = (System.Net.FtpWebRequest)System.Net.WebRequest.Create(ftpPath);
            request.Method = System.Net.WebRequestMethods.Ftp.DownloadFile;
            request.Credentials = new System.Net.NetworkCredential(ftpUser, ftpPwd);
            request.UseBinary = true;
            request.UsePassive = false;
            request.Timeout = 30000; // 30秒超时
            request.ReadWriteTimeout = 30000;
            
            using (var response = (System.Net.FtpWebResponse)request.GetResponse())
            using (var ftpStream = response.GetResponseStream())
            using (var ms = new System.IO.MemoryStream())
            {
                if (ftpStream == null)
                {
                    throw new Exception("FTP响应流为空");
                }
                
                ftpStream.CopyTo(ms);
                var fileBytes = ms.ToArray();
                
                if (fileBytes.Length == 0)
                {
                    return null; // 文件为空或不存在
                }
                
                return fileBytes;
            }
        }
        catch (System.Net.WebException ex)
        {
            if (ex.Response is System.Net.FtpWebResponse ftpResponse)
            {
                switch (ftpResponse.StatusCode)
                {
                    case System.Net.FtpStatusCode.ActionNotTakenFileUnavailable:
                        return null; // 文件不存在
                    case System.Net.FtpStatusCode.NotLoggedIn:
                        throw new Exception("FTP认证失败，请检查用户名和密码");
                    case System.Net.FtpStatusCode.ActionNotTakenFilenameNotAllowed:
                        throw new Exception("文件名不被允许或路径无效");
                    default:
                        throw new Exception($"FTP错误 ({ftpResponse.StatusCode}): {ftpResponse.StatusDescription}");
                }
            }
            
            // 处理超时和网络错误
            if (ex.Status == System.Net.WebExceptionStatus.Timeout)
            {
                throw new Exception("FTP连接超时，请稍后重试");
            }
            
            throw new Exception($"FTP连接失败: {ex.Message}");
        }
        catch (Exception ex)
        {
            throw new Exception($"获取文件失败: {ex.Message}");
        }
    }
    
    private string NormalizeFtpServer(string ftpServer)
    {
        if (string.IsNullOrEmpty(ftpServer))
        {
            throw new ArgumentException("FTP服务器地址不能为空");
        }
        
        // 确保以ftp://开头
        string normalizedServer = ftpServer.StartsWith("ftp://") ? ftpServer : $"ftp://{ftpServer}";
        
        // 特殊处理已知服务器地址
        if (normalizedServer == "ftp://36.26.21.214")
        {
            normalizedServer = "ftp://36.26.21.214:21";
        }
        else if (!normalizedServer.Contains(":") && normalizedServer.StartsWith("ftp://"))
        {
            normalizedServer += ":21"; // 默认FTP端口
        }
        
        // 开发环境使用本地服务器
        normalizedServer = "ftp://192.168.1.22:21";
        
        return normalizedServer;
    }

    public string GetContentType(string fileName)
    {
        if (string.IsNullOrEmpty(fileName))
            return "application/octet-stream";
            
        var extension = System.IO.Path.GetExtension(fileName).ToLower();
        
        return extension switch
        {
            // PDF文件
            ".pdf" => "application/pdf",
            
            // 图片文件
            ".jpg" or ".jpeg" => "image/jpeg",
            ".png" => "image/png",
            ".gif" => "image/gif",
            ".bmp" => "image/bmp",
            ".webp" => "image/webp",
            ".svg" => "image/svg+xml",
            ".ico" => "image/x-icon",
            
            // 文本文件
            ".txt" => "text/plain; charset=utf-8",
            ".log" => "text/plain; charset=utf-8",
            ".md" => "text/markdown; charset=utf-8",
            ".csv" => "text/csv; charset=utf-8",
            ".xml" => "text/xml; charset=utf-8",
            ".json" => "application/json; charset=utf-8",
            
            // Office文档
            ".doc" => "application/msword",
            ".docx" => "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
            ".xls" => "application/vnd.ms-excel",
            ".xlsx" => "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
            ".ppt" => "application/vnd.ms-powerpoint",
            ".pptx" => "application/vnd.openxmlformats-officedocument.presentationml.presentation",
            
            // 压缩文件
            ".zip" => "application/zip",
            ".rar" => "application/x-rar-compressed",
            ".7z" => "application/x-7z-compressed",
            
            // 其他常见格式
            ".dwg" => "application/acad",
            ".dxf" => "application/dxf",
            ".step" or ".stp" => "application/step",
            ".iges" or ".igs" => "application/iges",
            
            // 默认二进制流
            _ => "application/octet-stream"
        };
    }
    public int saveItem(LLJDto rkjDto)
    {
        var items = rkjDto.items;

 StandardInterface/MESApplication/Controllers/QC/LljController.cs

@@ -348,36 +348,87 @@
        }
    }

    [HttpGet("DownloadFtpFile")]
    public IActionResult DownloadFtpFile([FromQuery] string itemNo, [FromQuery] string fileName)
    [HttpGet("PreviewFtpFile")]
    public IActionResult PreviewFtpFile([FromQuery] string itemNo, [FromQuery] string fileName, [FromQuery] string ftpServer)
    {
        // FTP服务器信息
        string ftpServer = "ftp://36.26.21.214";
        string ftpUser = "hm_ftp";
        string ftpPwd = "dell_123"; 
        string ftpPath = $"{ftpServer}/IQC/{itemNo}/{fileName}";
        try
        {
            var request = (System.Net.FtpWebRequest)System.Net.WebRequest.Create(ftpPath);
            request.Method = System.Net.WebRequestMethods.Ftp.DownloadFile;
            request.Credentials = new System.Net.NetworkCredential(ftpUser, ftpPwd);
            request.UseBinary = true;
            request.UsePassive = false;
            using (var response = (System.Net.FtpWebResponse)request.GetResponse())
            using (var ftpStream = response.GetResponseStream())
            using (var ms = new System.IO.MemoryStream())
            // 添加CORS响应头
            Response.Headers.Add("Access-Control-Allow-Origin", "*");
            Response.Headers.Add("Access-Control-Allow-Methods", "GET, OPTIONS");
            Response.Headers.Add("Access-Control-Allow-Headers", "Content-Type");
            Response.Headers.Add("Access-Control-Expose-Headers", "Content-Type, Content-Length");
            
            var service = new LljService();
            var fileBytes = service.GetFtpFile(itemNo, fileName, ftpServer);
            
            if (fileBytes == null || fileBytes.Length == 0)
            {
                ftpStream.CopyTo(ms);
                ms.Position = 0;
                string contentType = "application/octet-stream";
                // 防御性处理，去除fileName中的回车换行和空格
                fileName = fileName?.Trim().Replace("\r", "").Replace("\n", "");
                return File(ms.ToArray(), contentType, fileName);
                return NotFound("文件在FTP服务器上不存在");
            }
            
            var contentType = service.GetContentType(fileName);
            fileName = fileName?.Trim().Replace("\r", "").Replace("\n", "");
            
            return File(fileBytes, contentType);
        }
        catch (Exception ex)
        {
            return BadRequest($"FTP下载失败：{ex.Message}，ftpPath={ftpPath}，fileName={fileName}");
            return StatusCode(500, $"预览文件失败：{ex.Message}");
        }
    }

    [HttpGet("DownloadFtpFile")]
    public IActionResult DownloadFtpFile([FromQuery] string itemNo, [FromQuery] string fileName, [FromQuery] string ftpServer)
    {
        try
        {
            // 添加CORS响应头 - 关键配置用于解决跨域问题
            Response.Headers.Add("Access-Control-Allow-Origin", "*");
            Response.Headers.Add("Access-Control-Allow-Methods", "GET, OPTIONS");
            Response.Headers.Add("Access-Control-Allow-Headers", "Content-Type, Authorization");
            Response.Headers.Add("Access-Control-Expose-Headers", "Content-Disposition, Content-Length, Content-Type");
            
            var service = new LljService();
            var fileBytes = service.GetFtpFile(itemNo, fileName, ftpServer);
            
            if (fileBytes == null || fileBytes.Length == 0)
            {
                return NotFound("文件在FTP服务器上不存在");
            }
            
            var contentType = service.GetContentType(fileName);
            fileName = fileName?.Trim().Replace("\r", "").Replace("\n", "");
            
            // 设置正确的Content-Disposition响应头以支持文件下载
            var result = File(fileBytes, "application/octet-stream", fileName);
            
            // 确保Content-Disposition头正确设置，支持中文文件名
            if (!string.IsNullOrEmpty(fileName))
            {
                var encodedFileName = System.Web.HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8);
                Response.Headers.Add("Content-Disposition", $"attachment; filename*=UTF-8''{encodedFileName}");
            }
            
            return result;
        }
        catch (Exception ex)
        {
            return StatusCode(500, $"下载文件失败：{ex.Message}");
        }
    }

    [HttpOptions("PreviewFtpFile")]
    [HttpOptions("DownloadFtpFile")]
    public IActionResult HandleOptions()
    {
        // 处理CORS预检请求
        Response.Headers.Add("Access-Control-Allow-Origin", "*");
        Response.Headers.Add("Access-Control-Allow-Methods", "GET, OPTIONS");
        Response.Headers.Add("Access-Control-Allow-Headers", "Content-Type, Authorization");
        Response.Headers.Add("Access-Control-Expose-Headers", "Content-Disposition, Content-Length, Content-Type");
        Response.Headers.Add("Access-Control-Max-Age", "86400");
        
        return Ok();
    }
}