FTP-abot move file-优快云博客

本文提供了一个使用Java实现FTP文件下载的示例代码。该示例展示了如何连接到FTP服务器，读取指定路径下的文件，并将其保存到本地指定目录中。

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	public void ftpGetFile(String sapepFilePath,String ipqrsPath, String fileName) throws Exception {
		FTPClient ftp = this.getFtpConnect(HOSTNAME,USERNAME,PASSWORD);
		InputStream ins = null;
		try {
			ins = ftp.retrieveFileStream(sapepFilePath);
			this.saveFile(ins, ipqrsPath, fileName);
		} catch (Exception e) {
			e.printStackTrace();
			throw new Exception(e.getMessage());
		} finally {
			try {
				if (ins != null)
					ins.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
			try {
				if (ftp != null && ftp.isConnected()) {
					ftp.logout();
					ftp.disconnect();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}
	private void saveFile(InputStream ins, String strDir, String strFile) throws Exception {
		File file = new File(strDir);
		FileOutputStream fos = null;
		// Create a buffer for reading the files
		byte[] buf = new byte[8 * 1024];

		try {
			file.mkdirs();
			file = new File(strDir + SLASH + strFile);
			if (!file.exists()) {
				file.createNewFile();
			}
			fos = new FileOutputStream(file);

			int len;
			while ((len = ins.read(buf)) > 0) {
				fos.write(buf, 0, len);
			}
		} catch (IOException e) {
			e.printStackTrace();
			throw new Exception(e.getMessage());
		} finally {
			fos.close();
		}
	}
    public FTPClient getFtpConnect(String hostName, String userName, String password){
        FTPClient ftp = new FTPClient();
        try{
            ftp.connect(hostName);
            if (!FTPReply.isPositiveCompletion(ftp.getReplyCode())) {
                ftp.disconnect();
            }
            ftp.login(userName, password);
            ftp.setBufferSize(100000);
            ftp.setFileType(org.apache.commons.net.ftp.FTP.BINARY_FILE_TYPE);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return ftp;
    }