前言
最近有项目需要开发档案打包下载功能,其中包含很多大附件,项目使用minio存储且不在同一台服务器上,为了优化速度决定使用windows共享功能进行文件传输
SMB1.0
集成jcifs类库,主要适用于一些老旧系统,但下载速度比较慢,仅作参考
此类库没有maven引用,官网地址:http://jcifs.samba.org/
注意事项:
设置jcifs.smb.client.dfs.disabled选项开启,可以提高传输速度
使用NtlmPasswordAuthentication认证代替smb协议url携带用户名密码方式,避免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;
- }
复制代码 SMB2.0
集成smbj类库,适用于windows server2012及以上操作系统,默认安装开启无需额外配置
此类库maven引用很久没有发布最新版本,需要下载代码自行编译,github地址:https://github.com/hierynomus/smbj
经测试,500MB文件传输大概比minio协议传输快了4秒左右,小文件传输速度基本保持一致- 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();
- }
- }
复制代码 445端口被禁用解决办法
一般企业/政府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功能无法使用,此时我们需要进行端口转发,即将客户端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即可完成共享,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
查看服务器转发规则- netsh interface portproxy show all
复制代码 删除服务器转发规则- netsh interface portproxy reset
复制代码 共享文件服务器
- 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
复制代码 客户端服务器
- netsh interface portproxy add v4tov4 listenaddress=127.0.0.1 listenport=445 connectaddress=192.168.1.164 connectport=4455
复制代码
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