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需要读取sftp服务器上符合指定的文件名正则的文件列表#xff0c;目前想到的最好的办法就是递归。
我这里引入的依赖是#xff1a; !-- jsch-sftp连接 --dependencygroupIdcom.jcraft/groupIdartifactIdjsch/artif…序言
需要读取sftp服务器上符合指定的文件名正则的文件列表目前想到的最好的办法就是递归。
我这里引入的依赖是 !-- jsch-sftp连接 --dependencygroupIdcom.jcraft/groupIdartifactIdjsch/artifactIdversion0.1.54/version/dependency不废话直接上代码 public static ListString getFileList(ChannelSftp channelSftp, String path, String fileNamePattern, Integer filePathDepth) {ListString fileList Lists.newLinkedList();try {Pattern pattern Pattern.compile(fileNamePattern);VectorChannelSftp.LsEntry files channelSftp.ls(path);//读取的根路径下一级就是文件if (1 filePathDepth) {for (ChannelSftp.LsEntry entry : files) {String fileName entry.getFilename();//找到和规则文件名正则匹配的文件if (pattern.matcher(fileName).matches()) {//拼接全路径String fullPath path fileName;fileList.add(fullPath);}}} else {//从读取根路径下开始算目录深度时目录深度大于1就使用递归来读取文件列表manyDirFileList(channelSftp, path, fileNamePattern, fileList, bComFilesaveReadruleDO.getDirPattern());}} catch (Exception e) {log.error(获取sftp指定目录下的文件列表失败{}, e.getMessage());}return fileList;}/*** 递归获取提供的路径下多级目录下符合正则的所有文件** param channelSftp ftp对象* param path 路径* param fileList 文件列表**/public static void manyDirFileList(ChannelSftp channelSftp, String path, String fileNamePattern,ListString fileList, String dirPattern) throws Exception {try {ListPattern dirPatterns new ArrayList();if (StringUtils.isNotEmpty(dirPattern)) {for (String pat : dirPattern.split(,)) {dirPatterns.add(Pattern.compile(pat.trim()));}}Pattern fileNamePat Pattern.compile(fileNamePattern);if (isDirectory(channelSftp, path)) {Vector? vector channelSftp.ls(path);for (Object l : vector) {ChannelSftp.LsEntry file (ChannelSftp.LsEntry) l;String fileName file.getFilename();boolean isDirMatch dirPatterns.isEmpty();for (Pattern dirPat : dirPatterns) {if (dirPat.matcher(fileName).matches()) {isDirMatch true;break;}}if (fileName.equals(.) || fileName.equals(..)) {continue;}if (isDirMatch || fileNamePat.matcher(fileName).matches()) {String fullPath path fileName (file.getAttrs().isDir() ? / : );manyDirFileList(channelSftp, fullPath, fileNamePattern, fileList, dirPattern);}}} else {String fileName path.substring(path.lastIndexOf(/) 1);if (fileNamePat.matcher(fileName).matches()) {fileList.add(path);}}} catch (SftpException e) {log.error(获取FTP指定目录下的文件异常路径{}异常信息{}, path, e.getMessage());} catch (Exception e) {log.error(递归获取SFTP指定目录下的文件列表失败路径{}异常信息{}, path, e.getMessage());throw new Exception(递归获取SFTP指定目录下的文件列表失败路径 path 异常信息 e.getMessage());}}另外还有一个需求就是只读取10个文件 public static ListString getFileListFor10(ChannelSftp channelSftp, String path, String fileNamePattern, Integer filePathDepth) {ListString fileList Lists.newLinkedList();try {Pattern pattern Pattern.compile(fileNamePattern);VectorChannelSftp.LsEntry files channelSftp.ls(path);//读取的根路径下一级就是文件if (1 filePathDepth) {for (ChannelSftp.LsEntry entry : files) {if (fileList.size() 10) {log.info(已读取10个文件不再读取目录:{}下的文件, path);break;}String fileName entry.getFilename();//找到和规则文件名正则匹配的文件if (pattern.matcher(fileName).matches()) {//拼接全路径String fullPath path fileName;fileList.add(fullPath);}}} else {//从输入的根路径下开始算目录深度时目录深度大于1就使用递归来读取文件列表manyDirFileListFor10(channelSftp, path, fileNamePattern, fileList, bComFilesaveReadruleDO.getDirPattern());}} catch (Exception e) {log.error(获取sftp指定目录下的文件列表失败{}, e.getMessage());}return fileList;}/*** 递归获取提供的路径下多级目录下符合正则的前10个文件** param channelSftp ftp对象* param path 路径* param fileList 文件列表**/public static void manyDirFileListFor10(ChannelSftp channelSftp, String path, String fileNamePattern,ListString fileList, String dirPattern) {try {ListPattern dirPatterns new ArrayList();if (StringUtils.isNotEmpty(dirPattern)) {for (String pat : dirPattern.split(,)) {dirPatterns.add(Pattern.compile(pat.trim()));}}Pattern fileNamePat Pattern.compile(fileNamePattern);if (isDirectory(channelSftp, path)) {Vector? vector channelSftp.ls(path);for (Object o : vector) {// 如果已经找到了10个文件直接返回不再递归if (fileList.size() 10) {log.info(已读取10个文件不再读取目录:{}下的文件, path);break;}ChannelSftp.LsEntry file (ChannelSftp.LsEntry) o;String fileName file.getFilename();boolean isDirMatch dirPatterns.isEmpty();for (Pattern dirPat : dirPatterns) {if (dirPat.matcher(fileName).matches()) {isDirMatch true;break;}}if (fileName.equals(.) || fileName.equals(..)) {continue;}if (isDirMatch || fileNamePat.matcher(fileName).matches()) {String fullPath path fileName (file.getAttrs().isDir() ? / : );manyDirFileListFor10(channelSftp, fullPath, fileNamePattern, fileList, dirPattern);}}} else {String fileName path.substring(path.lastIndexOf(/) 1);if (fileNamePat.matcher(fileName).matches()) {fileList.add(path);}}} catch (SftpException e) {log.error(获取FTP指定目录下的文件异常路径{}异常信息{}, path, e.getMessage());} catch (Exception e) {log.error(递归获取SFTP指定目录下的文件列表失败路径{}异常信息{}, path, e.getMessage());}}-----------------知道的越多, 不知道的越多--------------------
