使用VFS进行sftp传输
偶然的机会了解啦VFS，在研究的过程中不得不对其功能的强大感到叹服，以下虽然是摘抄的代码，但可以作为一个简单的例子，呵呵，其它功能正在研究中。。。

package com.meetexpo.showcase.monitor;import org.apache.commons.vfs.FileObject;import org.apache.commons.vfs.FileSystemException;import org.apache.commons.vfs.FileSystemOptions;import org.apache.commons.vfs.Selectors;import org.apache.commons.vfs.cache.DefaultFilesCache;import org.apache.commons.vfs.impl.DefaultFileSystemManager;import org.apache.commons.vfs.provider.local.DefaultLocalFileProvider;import org.apache.commons.vfs.provider.sftp.SftpFileProvider;import org.apache.commons.vfs.provider.sftp.SftpFileSystemConfigBuilder;import org.apache.commons.vfs.provider.zip.ZipFileProvider;/** * @author myao Update:2006-7-1810:40:46 */public class VfsOp {  private String _sourceroot = "C:/vfsroot";  private String _targetroot = "sftp://xxx:xxx@xxxx/doc-root/myaoVfstest/";  // b1:f1:ef:26:3e:5f:a5:0d:70:fa:5e:df:d9:6b:55:41  private FileObject localfs, targetfs;  private DefaultFileSystemManager vfsmgr;  VfsOp() {    try {      init();    } catch (FileSystemException e) {      e.printStackTrace();    }  }  void init() throws FileSystemException {    vfsmgr = getDefaultFileSystemManager();  }  void moveFile(String sourcePath, String targetPath)      throws FileSystemException {    localfs = vfsmgr.resolveFile(sourcePath);    if (!localfs.exists()) {      localfs.createFolder();      // localfs.    }    // vfsmgr.    FileSystemOptions opts = new FileSystemOptions();    SftpFileSystemConfigBuilder.getInstance().setStrictHostKeyChecking(        opts, "no");    targetfs = vfsmgr.resolveFile(targetPath, opts);    if (!targetfs.exists()) {      targetfs.createFolder();    }    try {      long startTime = System.currentTimeMillis();      // System.out.println("Source File:" + source.getChildren().length);      targetfs.copyFrom(localfs, Selectors.SELECT_FILES);      // System.out.println("Target File:" + target.getChildren().length);      // TODO 要想办法用遍历的方法来拷贝文件，否则无法留下拷贝的细节。正在装载数据……      // FileObject[] flist = localfs.getChildren();      // for (int i = 0; i < flist.length; i++) {      // FileObject tmp = vfsmgr.resolveFile(targetfs, flist[i].getName()      // .getBaseName());      // if (!tmp.exists()) {      // tmp.createFile();      // }      //      // VfsMutiMove t = new VfsMutiMove(flist[i], tmp);      // t.run();      // // tmp.copyFrom(flist[i], Selectors.SELECT_SELF);      // }      long endTime = System.currentTimeMillis();      System.out.println(this.getClass().getName());      System.out.println("Cost time(ms:):" + (endTime - startTime));    } catch (FileSystemException e) {      e.printStackTrace();    }  }  private DefaultFileSystemManager getDefaultFileSystemManager() {    DefaultFileSystemManager mgr = new DefaultFileSystemManager();    // SFTP 供应者    SftpFileProvider fp = new SftpFileProvider();    FileSystemOptions t = new FileSystemOptions();    // ZIP 供应者    ZipFileProvider zp = new ZipFileProvider();    // 缺省本地文件供应者    DefaultLocalFileProvider lf = new DefaultLocalFileProvider();    try {      // common-vfs 中 文件管理器的使用范例      mgr.addProvider("sftp", fp);      mgr.addProvider("zip", zp);      mgr.addProvider("file", lf);      mgr.setFilesCache(new DefaultFilesCache());      mgr.init();    } catch (FileSystemException e) {      // 此处应该改为log      e.printStackTrace();    }    return mgr;  }  void getWorkspaceFromProperties() {    /*     * Properties tmpProperties; File tmpfile = new     * File("workspace.properties");     */  }  /**   * @param args   * @throws Exception   */  public static void main(String[] args) throws Exception {    VfsOp op = new VfsOp();    op.moveFile("C:/downloads",          "sftp://xxxx:xxxx@192.168.1.16/doc-root/myaoVfstest/");  }}