FTPClient中retrieveFileStream的用法
2007-03-27 11:45 | Filed Under Java |
工作需要使用了org.apache.commons.net.ftp.FTPClient来操作FTP，记录一下心得。
这个类封装的很完善，使用起来也很简单，只是在使用retrieveFileStream的时候碰到了一点小问题，就是不知道怎么完成传输状态，尝试发送abor指令也不行。在咨询了bianbian和查看了源代码之后看到这一段说明以后解决问题：
* You must close the InputStream when you
* finish reading from it. The InputStream itself will take care of
* closing the parent data connection socket upon being closed. To
* finalize the file transfer you must call
* {@link #completePendingCommand completePendingCommand } and
* check its return value to verify success.
代码如下：
- import org.apache.commons.net.ftp.FTPClient;
- public class TestFTP {
- public static void main(String[] args) {
- try {
- FTPClient ftp = new FTPClient();
- // initialize ftp connection
- /*
- *
- */
- String remotefile = "test.xml";
- InputStream is = null;
- is = ftp.retrieveFileStream(remotefile);
- if (is != null) {
- is.close();
- }
- if (!ftp.completePendingCommand()) {
- ftp.logout();
- ftp.disconnect();
- }
- // continue
- } catch (SocketException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- } catch (IOException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- }
- }
- }
