通过sftp获取sftp文件资源模板

#相关导入
import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.ChannelSftp.LsEntry;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;

public boolean getRemoteFileBySftp(String server, int port, String user, String password, String localpath,
			String remotepath,String fileName, String okFileName) throws Exception{
		
		boolean flag = false;
		ChannelSftp sftp = null;
		Channel channel = null;
		Session sshSession = null;
		InputStream is = null;
		FileOutputStream fos = null;
		try {
			JSch jsch = new JSch();
			jsch.getSession(user, server, port);
			sshSession = jsch.getSession(user, server, port);
			sshSession.setPassword(password);
			Properties sshConfig = new Properties();
			sshConfig.put("StrictHostKeyChecking", "no");
			sshSession.setConfig(sshConfig);
			sshSession.connect();
			channel = sshSession.openChannel("sftp");
			channel.connect();
			sftp = (ChannelSftp) channel;
			sftp.lcd(localpath);
			sftp.cd(remotepath);
			Vector<?> v = sftp.ls(remotepath);
			for (Object item : v) {
				LsEntry entry = (LsEntry) item;
				if (entry.getFilename().equals(okFileName)) {
					flag = true;
					break;
				}
			}
			if (flag) {
					Path p = Paths.get(localpath, fileName);
					is = sftp.get(fileName);
					File downfile = new File(p.toString());
					fos = new FileOutputStream(downfile);
					copyInputStream(is, fos);
			} else {
				return flag;
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			closeOutPutStream(fos);
			closeInPutStream(is);
			closeChannel(sftp);
			closeChannel(channel);
			closeSession(sshSession);
		}
		return flag;
		
	}