FTP连接代码，可浏览FTP等
/*** FTP连接代码，可浏览FTP等
* 仅适用于管理员操作，不适合普通用
*
* Title: 冰云工作室
* Description:
* Copyright: Copyright (c) 2003
* Company:
* @author 冰云
* @version 1.0 August.23rd 2003
*/
public class FTPConnection {
FtpClient client;
private String host;
private String username;
private String password;
private String path = "/";
private int port = 21;
private static FTPConnection instance;
private FTPConnection() {
}
// 单例类的方法，获得唯一实例
public static FTPConnection getInstance() {
if (instance == null) {
instance = new FTPConnection();
}
return instance;
}
// 连接FTP，并进入当前的path
public void connect() throws IOException {
if (client == null) {
client = new FtpClient(host, port);
client.login(username, password);
client.binary();
client.cd(path);
}
else {
client.noop();
client.cd(path);
}
}
// 关闭FTP
public void close() throws IOException {
if (client != null) {
client.closeServer();
}
}
// 获得FTPClient类，可以直接对其操作
public FtpClient getClient() throws IOException {
if (client == null) {
connect();
}
return client;
}
// 返回当前目录的所有文件及文件夹
public ArrayList getFileList() throws IOException {
BufferedReader dr = new BufferedReader(new InputStreamReader(client.list()));
ArrayList al = new ArrayList();
String s = "";
while ( (s = dr.readLine()) != null) {
al.add(s);
}
return al;
}
// 返回当前目录的文件名称
public ArrayList getNameList() throws IOException {
BufferedReader dr = new BufferedReader(new InputStreamReader(client.
nameList(path)));
ArrayList al = new ArrayList();
String s = "";
while ( (s = dr.readLine()) != null) {
al.add(s);
}
return al;
}
// 判断一行文件信息是否为目录
public boolean isDir(String line) {
return ( (String) parseLine(line).get(0)).indexOf("d") != -1;
}
public boolean isFile(String line) {
return!isDir(line);
}
// 处理getFileList取得的行信息
private ArrayList parseLine(String line) {
ArrayList s1 = new ArrayList();
StringTokenizer st = new StringTokenizer(line, " ");
while (st.hasMoreTokens()) {
s1.add(st.nextToken());
}
return s1;
}
public String getFileName(String line) {
return ( (String) parseLine(line).get(8));
}
public String getFileSize(String line) {
return (String) parseLine(line).get(4);
}
public String getFileDate(String line) {
ArrayList a = parseLine(line);
return (String) a.get(5) + " " + (String) a.get(6) + " " + (String) a.get(7);
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