java的ftp下載目錄
長期在aix上看代碼,比較痛苦,想當下來回來看或者是備份呢,總是少這少那的,哎,這破系統東西真多,分布的到處都是,想自己搭個環境也總是缺少.h文件, 基于這幾年痛苦的代碼經歷,我就寫了這么個類來完成下載我們的代碼,不包括執行程序,壓縮包,或者是其他什么亂七八糟的東西,真的逼的, 湊活用吧, 后續在完善,
上代碼先:
public class FtpApp {
// 需要下載的文件后綴
private static String[] _ext = { ".cp", ".cpp", ".c", ".sh", ".h", ".xml", ".cfg", "makefile" };
// 不需要下載的目錄
private static String[] _not = { "/mgcrm/channel","/mgcrm/work","/mgcrm/run/cfg/commagent/etc","/mgcrm/run/backup", "/mgcrm/work/Python", "/mgcrm/run/cfile/tibss/iasm/src" };
// 本地存儲目錄
private static String local_path = "C:/";
// 遠程下載目錄
private static String path = "/mgcrm/work";
private static String username = "mgcrm";
private static String password = "mgcrm";
private static String HOST = "136.24.224.4";
private static int PORT = 21;
// 可以下載的文件列表<全路徑>
// static List<String> li_file = new ArrayList<String>();
// 可以下載的目錄<全路徑>
// static List<String> li_path = new ArrayList<String>();
private static FtpClient ftpClient = null;
/**
* connectServer 連接ftp服務器
* @throws java.io.IOException
* @param path 文件夾，空代表根目錄
* @param password 密碼
* @param user 登陸用戶
* @param server 服務器地址
*/
public void connectServer(String server, int port, String user, String password) throws IOException {
// server：FTP服務器的IP地址；user:登錄FTP服務器的用戶名
// password：登錄FTP服務器的用戶名的口令；path：FTP服務器上的路徑
ftpClient = new FtpClient();
ftpClient.openServer(server, port);
ftpClient.login(user, password);
// 用2進制上傳、下載
ftpClient.binary();
}
/**
* closeServer 斷開與ftp服務器的鏈接
*/
private void closeServer() {
try {
if (ftpClient != null) {
ftpClient.closeServer();
}
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 取得某個目錄下的所有文件列表
* @throws IOException
*/
private List<String> getFileList(String path) {
List<String> list = new ArrayList<String>();
BufferedReader dis = null;
try {
TelnetInputStream nameList = ftpClient.nameList(path);
if (nameList != null) {
dis = new BufferedReader(new InputStreamReader(nameList));
String filename = "";
while ((filename = dis.readLine()) != null) {
list.add(filename);
}
}
} catch (IOException e) {
} finally {
if (dis != null) {
try {
dis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return list;
}
/**
* 將FTP的文件改名<未使用>
*/
private boolean rename(String srcFileName, String destFileName) {
boolean flag = false;
try {
ftpClient.rename(srcFileName, destFileName);
flag = true;
} catch (Exception ex) {
ex.printStackTrace();
flag = false;
}
return flag;
}
/**
* download 從ftp下載文件到本地
* @throws java.lang.Exception
* @return long
* @param newfilename 本地生成的文件名
* @param filename 服務器上的文件名
*/
private long download(String filename, String newfilename) throws Exception {
long result = 0;
TelnetInputStream is = null;
FileOutputStream os = null;
try {
is = ftpClient.get(filename);
java.io.File outfile = new java.io.File(newfilename);
os = new FileOutputStream(outfile);
byte[] bytes = new byte[1024];
int c;
while ((c = is.read(bytes)) != -1) {
os.write(bytes, 0, c);
result = result + c;
}
outfile = null;
} catch (IOException e) {
e.printStackTrace();
result = 0;
} finally {
if (is != null) {
is.close();
}
if (os != null) {
os.close();
}
}
return result;
}
/**
* @param args
*/
public static void main(String[] args) {
FtpApp dao = new FtpApp();
try {
dao.connectServer(HOST, PORT, username, password);
dao.getList(path);
// dao.downloads(li_file, local_path);
} catch (IOException e) {
e.printStackTrace();
}finally{
dao.closeServer();
}
}
private void downloadsOne(String path) {
String local_file = null;
local_file = local_path + path;
createPathifNotExists(local_file);
try {
if (localFileExists(local_file)) {
return;
}
download(path, local_file);
System.out.println(path + " is downloaded :" + local_file);
} catch (Exception e) {
e.printStackTrace();
}
}
private boolean localFileExists(String local_file) {
return new File(local_file).exists();
}
private void downloads(List<String> li_file2, String local_path) {
String local_file = null;
String remoute_file = null;
for (int i = 0; i < li_file2.size(); i++) {
remoute_file = li_file2.get(i);
local_file = local_path + remoute_file;
createPathifNotExists(local_file);
try {
download(remoute_file, local_file);
} catch (Exception e) {
e.printStackTrace();
}
System.out.println(remoute_file + ", is download: " + local_file);
}
}
private void createPathifNotExists(String local_file) {
local_file = local_file.replace("http://", "/");
int c = local_file.lastIndexOf('/');
String fs = local_file.substring(0, c);
File f = new File(fs);
if (!f.exists()) {
f.mkdirs();
}
f = null;
}
private void getList(String path) {
List<String> ls = new ArrayList<String>();
String pwd = null;
if (path == null || path.trim().equals("")) {
return;
}
try {
ftpClient.cd(path);
System.out.println("cd " + path);
} catch (IOException e) {
if (isOkFile(path)) {
// /
downloadsOne(path);
// li_file.add(path);
}
return;
}
try {
pwd = ftpClient.pwd();
ls = this.getFileList(pwd);
} catch (IOException e) {
e.printStackTrace();
}
if (ls == null || ls.size() < 1) {
return;
}
if (notDownloadDir(pwd)) {
return;
}
// li_path.add(path);
if (ls != null) {
for (int i = 0; i < ls.size(); i++) {
getList(ls.get(i));
}
}
}
private boolean notDownloadDir(String pwd) {
for (int i = 0; i < _not.length; i++) {
if (pwd.startsWith(_not[i])) {
return true;
}
}
return false;
}
private static boolean isOkFile(String path) {
for (int i = 0; i < _ext.length; i++) {
if (path.endsWith(_ext[i])) {
return true;
}
}
return false;
}
}</pre>我試過了,將系統近600m的代碼下載下來, ( 真不知道這么會有這么多垃圾代碼 )
后續需要完善的:
1,寫成配置
2,多進程
3,日志記錄
4,文件重命名
5,本地壓縮
6,優化代碼 - 創建文件夾的那段著實寫的不好,其他還可以用正則什么的
長期寫c的,偶爾java了一把,自我鼓勵下:還不賴, 就當v1吧,看先.
將例子寫好,加入配置: http://download.csdn.net/detail/zpwmhx/4342943
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