import org.apache.commons.io.IOUtils;  import org.apache.commons.net.ftp.FTPClient;    import java.io.File;  import java.io.FileInputStream;  import java.io.IOException;  import java.io.FileOutputStream;    /**  * Apache commons-net 试用一把，看看FTP客户端工具做的好用不  *  */  public class FtpTest {      public static void main(String[] args) {          testUpload();         // testDownload();      }        /**       * FTP上传单个文件测试       * 1.连接服务       * 2.确定你要上传的文件       * 3.指定你在服务器端存放的位置       */      public static void testUpload() {          FTPClient ftpClient = new FTPClient();          FileInputStream fis = null;            try {              ftpClient.connect("192.168.1.111");              ftpClient.login("admin", "javaf");                File srcFile = new File("F:\images\460.jpg");              fis = new FileInputStream(srcFile);              //设置上传目录              ftpClient.changeWorkingDirectory("/lanjie/pic");              ftpClient.setBufferSize(1024);              ftpClient.setControlEncoding("GBK");              //设置文件类型（二进制）              ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);              ftpClient.storeFile("work.jpg", fis);          } catch (IOException e) {              e.printStackTrace();              throw new RuntimeException("FTP客户端出错！", e);          } finally {              IOUtils.closeQuietly(fis);              try {                  ftpClient.disconnect();              } catch (IOException e) {                  e.printStackTrace();                  throw new RuntimeException("关闭FTP连接发生异常！", e);              }          }      }        /**       * FTP下载单个文件测试       */      public static void testDownload() {          FTPClient ftpClient = new FTPClient();          FileOutputStream fos = null;            try {              ftpClient.connect("192.168.1.111");              ftpClient.login("admin", "javaf");                String remoteFileName = "/lanjie/pic/girl.jpg";              fos = new FileOutputStream("c:/down.jpg");                ftpClient.setBufferSize(1024);              //设置文件类型（二进制）              ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);              ftpClient.retrieveFile(remoteFileName, fos);          } catch (IOException e) {              e.printStackTrace();              throw new RuntimeException("FTP客户端出错！", e);          } finally {              IOUtils.closeQuietly(fos);              try {                  ftpClient.disconnect();              } catch (IOException e) {                  e.printStackTrace();                  throw new RuntimeException("关闭FTP连接发生异常！", e);              }          }      }  }