关于springboot:SpringBoot访问windows共享文件

前言

最近有我的项目须要开发档案打包下载性能，其中蕴含很多大附件，我的项目应用 minio 存储且不在同一台服务器上，为了优化速度决定应用 windows 共享性能进行文件传输

SMB1.0

集成 jcifs 类库，次要实用于一些老旧零碎，但下载速度比较慢，仅作参考

此类库没有 maven 援用，官网地址：http://jcifs.samba.org/

注意事项：

设置 jcifs.smb.client.dfs.disabled 选项开启，能够进步传输速度

应用 NtlmPasswordAuthentication 认证代替 smb 协定 url 携带用户名明码形式，防止特殊字符传递造成认证失败

 public static void downloadFile(String ip, String shareFolder, String filePath, String localDir) throws Exception {System.setProperty("jcifs.smb.client.dfs.disabled", "true");
        String url = getFileUrl(ip, shareFolder, filePath);
        SmbFile smbFile = new SmbFile(url);
        smbFile.connect();
        FileUtil.initfloderPath(localDir);
        String localFilePath = localDir + "/" + smbFile.getName();
        BufferedInputStream buf = new BufferedInputStream(new SmbFileInputStream(smbFile));
        FileUtil.writeFile(localFilePath, FileUtil.convertStreamToByte(buf));
    }

    public static void downloadFileByAuth(String ip, String shareFolder, String userName, String password, String filePath, String localDir) throws Exception {System.setProperty("jcifs.smb.client.dfs.disabled", "true");
        String url = getFileUrl(ip, shareFolder, filePath);
        NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication(ip, userName, password);
        SmbFile smbFile = new SmbFile(url, auth);
        smbFile.connect();
        FileUtil.initfloderPath(localDir);
        String localFilePath = localDir + "/" + smbFile.getName();
        BufferedInputStream buf = new BufferedInputStream(new SmbFileInputStream(smbFile));
        FileUtil.writeFile(localFilePath, FileUtil.convertStreamToByte(buf));
    }
    
    public static String getFileUrl(String ip, String shareFolder, String filePath) {return "smb://" + ip + "/" + shareFolder + "/" + filePath;}

SMB2.0

集成 smbj 类库，实用于 windows server2012 及以上操作系统，默认装置开启无需额定配置

此类库 maven 援用很久没有公布最新版本，须要下载代码自行编译，github 地址：https://github.com/hierynomus…

经测试，500MB 文件传输大略比 minio 协定传输快了 4 秒左右，小文件传输速度根本保持一致

  public static void downloadFileV2(String ip, String shareFolder, String filePath, String localDir) throws Exception {SMBClient client = new SMBClient(SmbConfig.createDefaultConfig());
        Connection conn = client.connect(ip);
        Session session = conn.authenticate(AuthenticationContext.anonymous());
        downLoadSMB2(session, shareFolder, filePath, localDir);
    }

    public static void downloadFileByAuthV2(String ip, String shareFolder, String userName, String password, String filePath, String localDir) throws Exception {SMBClient client = new SMBClient(SmbConfig.createDefaultConfig());
        Connection conn = client.connect(ip);
        Session session = conn.authenticate(new AuthenticationContext(userName, password.toCharArray(), ip));
        downLoadSMB2(session, shareFolder, filePath, localDir);
    }

    private static void downLoadSMB2(Session session, String shareFolder, String filePath, String localDir) throws Exception {
        InputStream fis = null;
        FileOutputStream os = null;
        DiskShare diskShare = null;
        try {diskShare = (DiskShare) session.connectShare(shareFolder);
            if (!diskShare.fileExists(filePath)) {throw new FileNotFoundException(filePath);
            }
            if (!diskShare.isConnected())
                diskShare = (DiskShare) session.connectShare(shareFolder);

            com.hierynomus.smbj.share.File file = diskShare.openFile(filePath,
                    EnumSet.of(AccessMask.GENERIC_READ),
                    (Set) null,
                    SMB2ShareAccess.ALL,
                    SMB2CreateDisposition.FILE_OPEN,
                    (Set) null
            );
            fis = file.getInputStream();
            FileUtil.initfloderPath(localDir);
            String[] filePathList = filePath.split("\\/");
            String localFilePath = localDir + "/" + filePathList[filePathList.length - 1];
            os = new FileOutputStream(localFilePath);
            byte[] b = new byte[4096];
            int length;
            while ((length = fis.read(b)) > 0) {os.write(b, 0, length);
            }
        } catch (IOException e) {throw e;} finally {IOUtils.close(os);
            IOUtils.close(fis);
            if (diskShare != null && diskShare.isConnected()) diskShare.close();}
    }

445 端口被禁用解决办法

个别企业 / 政府我的项目为了系统安全会禁用 445 端口，而 445 端口禁用后文件共享性能无奈应用，此时咱们须要进行端口转发，行将客户端 445 端口转发到共享服务器端口 A，共享服务器将本地端口 A 转发到 445 即可实现共享，具体操作步骤如下，192.168.1.164 就是共享文件服务器的内网 ip

查看服务器转发规定

netsh interface portproxy show all

删除服务器转发规定

netsh interface portproxy reset

共享文件服务器

• 执行 CMD 代码

netsh interface portproxy add v4tov4 listenport=4455 listenaddress=192.168.1.164 connectport=445 connectaddress=127.0.0.1
netsh interface portproxy add v4tov4 listenport=4455 listenaddress=127.0.0.1 connectport=445 connectaddress=127.0.0.1

客户端服务器

• 敞开 Server 服务
• CMD 执行代码

netsh interface portproxy add v4tov4 listenaddress=127.0.0.1 listenport=445 connectaddress=192.168.1.164 connectport=4455

• 重启零碎