Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.vfs2.provider.ftp; import java.util.Arrays; import java.util.Collection; import java.util.Collections; import java.util.StringTokenizer; import org.apache.commons.vfs2.Capability; import org.apache.commons.vfs2.FileName; import org.apache.commons.vfs2.FileSystem; import org.apache.commons.vfs2.FileSystemConfigBuilder; import org.apache.commons.vfs2.FileSystemException; import org.apache.commons.vfs2.FileSystemOptions; import org.apache.commons.vfs2.UserAuthenticationData; import org.apache.commons.vfs2.provider.AbstractOriginatingFileProvider; import org.apache.commons.vfs2.provider.URLFileName; /** * A provider for FTP file systems. * PATCH for : https://issues.apache.org/jira/browse/VFS-178 * @author <a href="http://commons.apache.org/vfs/team-list.html">Commons VFS team</a> */ public class FtpFileProvider extends AbstractOriginatingFileProvider { /** * File Entry Parser. */ public static final String ATTR_FILE_ENTRY_PARSER = "FEP"; public final static String PASSIVE_MODE = "vfs.passive"; /** * Authenticator types. */ public static final UserAuthenticationData.Type[] AUTHENTICATOR_TYPES = new UserAuthenticationData.Type[] { UserAuthenticationData.USERNAME, UserAuthenticationData.PASSWORD }; static final Collection<Capability> capabilities = Collections.unmodifiableCollection(Arrays .asList(new Capability[] { Capability.CREATE, Capability.DELETE, Capability.RENAME, Capability.GET_TYPE, Capability.LIST_CHILDREN, Capability.READ_CONTENT, Capability.GET_LAST_MODIFIED, Capability.URI, Capability.WRITE_CONTENT, Capability.APPEND_CONTENT, Capability.RANDOM_ACCESS_READ, })); public FtpFileProvider() { super(); setFileNameParser(FtpFileNameParser.getInstance()); } /** * Creates the filesystem. */ @Override protected FileSystem doCreateFileSystem(final FileName name, final FileSystemOptions fileSystemOptions) throws FileSystemException { // Create the file system final URLFileName rootName = (URLFileName) name; String queryString = rootName.getQueryString(); FileSystemOptions opts = fileSystemOptions; if (opts == null) { opts = new FileSystemOptions(); } if (queryString != null) { FtpFileSystemConfigBuilder cfgBuilder = FtpFileSystemConfigBuilder.getInstance(); StringTokenizer st = new StringTokenizer(queryString, "?&!="); while (st.hasMoreTokens()) { if (PASSIVE_MODE.equalsIgnoreCase(st.nextToken()) && st.hasMoreTokens() && "true".equalsIgnoreCase(st.nextToken())) { cfgBuilder.setPassiveMode(opts, true); } } } FTPClientWrapper ftpClient = new FTPClientWrapper(rootName, opts); /* FTPClient ftpClient = FtpClientFactory.createConnection(rootName.getHostName(), rootName.getPort(), rootName.getUserName(), rootName.getPassword(), rootName.getPath(), fileSystemOptions); */ return new FtpFileSystem(rootName, ftpClient, fileSystemOptions); } @Override public FileSystemConfigBuilder getConfigBuilder() { return FtpFileSystemConfigBuilder.getInstance(); } public Collection<Capability> getCapabilities() { return capabilities; } }