Java连接FTP服务器，并上传或下载以及删除ftp服务器中的文件

<span style="font-size:18px;">        String host="XX.XXX.XX.XXX";//ftp地址
Integer port=21;
String userName="lxf";
String password="123456";
try {
FTPClientUtil ftpClient=new FTPClientUtil(host, port, userName, password, true);

//--------向FTP存文件
InputStream is =new FileInputStream(new File("d:\\maven3.1.1.rar"));
boolean upload=ftpClient.upload("/lxf/maven3.1.1.rar", is);
System.out.println(upload);

//-------向FTP取文件
boolean down=ftpClient.download("/lxf/maven3.1.1.rar", "d:\\p.rar");
System.out.println(down);

//-------删除FTP文件
boolean del=ftpClient.delete("/lxf/maven3.1.1.rar");
System.out.println(del);</span>