java編寫的FTP上傳簡單工具類

jopen 9年前發布 | 2K 次閱讀 Java
package com.icelove.util;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
import sun.net.TelnetInputStream;
import sun.net.TelnetOutputStream;
import sun.net.ftp.FtpClient;
/**

FTP上傳工具類
@author icelove
/
public class FtpUtil {
private String ip = "";
private String username = "";
private String password = "";
private int port = -1;
private String path = "";
private FtpClient ftpClient = null;
private OutputStream os = null;
private FileInputStream is = null;
public FtpUtil(String serverIP, String username, String password) {
this.ip = serverIP;
this.username = username;
this.password = password;
}
public FtpUtil(String serverIP, int port, String username, String password) {
this.ip = serverIP;
this.username = username;
this.password = password;
this.port = port;
}
/**

連接ftp服務器    
@throws IOException

*/
public boolean connectServer() {
ftpClient = new FtpClient();
try {
if (this.port != -1) {
ftpClient.openServer(this.ip, this.port);
} else {
ftpClient.openServer(this.ip);
}
ftpClient.login(this.username, this.password);
if (this.path.length() != 0) {
ftpClient.cd(this.path);// path是ftp服務下主目錄的子目錄

}
ftpClient.binary();// 用2進制上傳、下載

System.out.println("已登錄到\"" + ftpClient.pwd() + "\"目錄");
return true;
} catch (IOException e) {
e.printStackTrace();
return false;
}
}

/**

斷開與ftp服務器連接    
@throws IOException

*/
public boolean closeServer() {
try {
if (is != null) {
is.close();
}
if (os != null) {
os.close();
}
if (ftpClient != null) {
ftpClient.closeServer();
}
System.out.println("已從服務器斷開");
return true;
} catch (IOException e) {
e.printStackTrace();
return false;
}
}

/**

檢查文件夾在當前目錄下是否存在    
@param dir    
@return

*/
private boolean isDirExist(String dir) {
String pwd = "";
try {
pwd = ftpClient.pwd();
ftpClient.cd(dir);
ftpClient.cd(pwd);
} catch (Exception e) {
return false;
}
return true;
}

/**

在當前目錄下創建文件夾    
@param dir    
@return    
@throws Exception

*/
private boolean createDir(String dir) {
try {
ftpClient.ascii();
StringTokenizer s = new StringTokenizer(dir, "/"); //sign

s.countTokens();
String pathName = ftpClient.pwd();
while (s.hasMoreElements()) {
pathName = pathName + "/" + (String) s.nextElement();
try {
ftpClient.sendServer("MKD " + pathName + "\r\n");
} catch (Exception e) {
e = null;
return false;
}
ftpClient.readServerResponse();
}
ftpClient.binary();
return true;
} catch (IOException e1) {
e1.printStackTrace();
return false;
}
}

/**

ftp上傳    
如果服務器段已存在名為filename的文件夾，該文件夾中與要上傳的文件夾中同名的文件將被替換    

@param filename 要上傳的文件（或文件夾）名    
@return    
@throws Exception

*/
public boolean upload(String filename) {
String newname = "";
if (filename.indexOf("/") > -1) {
newname = filename.substring(filename.lastIndexOf("/") + 1);
} else {
newname = filename;
}
return upload(filename, newname);
}

/**

ftp上傳    
如果服務器段已存在名為newName的文件夾，該文件夾中與要上傳的文件夾中同名的文件將被替換    

@param fileName 要上傳的文件（或文件夾）名    
@param newName 服務器段要生成的文件（或文件夾）名    
@return

*/
public boolean upload(String fileName, String newName) {
try {
String savefilename = new String(fileName.getBytes("ISO-8859-1"), "GBK");
File file_in = new File(savefilename);//打開本地待長傳的文件

if (!file_in.exists()) {
throw new Exception("此文件或文件夾[" + file_in.getName() + "]有誤或不存在!");
}
if (file_in.isDirectory()) {
upload(file_in.getPath(), newName, ftpClient.pwd());
} else {
uploadFile(file_in.getPath(), newName);
}

if (is != null) {
 is.close();
}
if (os != null) {
 os.close();
}
return true;
} catch (Exception e) {
e.printStackTrace();
System.err.println("Exception e in Ftp upload(): " + e.toString());
return false;
} finally {
try {
 if (is != null) {
  is.close();
 }
 if (os != null) {
  os.close();
 }
} catch (IOException e) {
 e.printStackTrace();
}
}
}
/**

真正用于上傳的方法    
@param fileName    
@param newName    
@param path    
@throws Exception

*/
private void upload(String fileName, String newName, String path) throws Exception {
String savefilename = new String(fileName.getBytes("ISO-8859-1"), "GBK");
File file_in = new File(savefilename);//打開本地待長傳的文件

if (!file_in.exists()) {
throw new Exception("此文件或文件夾[" + file_in.getName() + "]有誤或不存在!");
}
if (file_in.isDirectory()) {
if (!isDirExist(newName)) {
createDir(newName);
}
ftpClient.cd(newName);
File sourceFile[] = file_in.listFiles();
for (int i = 0; i < sourceFile.length; i++) {
if (!sourceFile[i].exists()) {
continue;
}
if (sourceFile[i].isDirectory()) {
this.upload(sourceFile[i].getPath(), sourceFile[i].getName(), path + "/" + newName);
} else {
this.uploadFile(sourceFile[i].getPath(), sourceFile[i].getName());
}
}
} else {
uploadFile(file_in.getPath(), newName);
}
ftpClient.cd(path);
}

/**

upload 上傳文件    

@param filename 要上傳的文件名    
@param newname 上傳后的新文件名    
@return -1 文件不存在 >=0 成功上傳，返回文件的大小    
@throws Exception

*/
public long uploadFile(String filename, String newname) throws Exception {
long result = 0;
TelnetOutputStream os = null;
FileInputStream is = null;
try {
java.io.File file_in = new java.io.File(filename);
if (!file_in.exists())
return -1;
os = ftpClient.put(newname);
result = file_in.length();
is = new FileInputStream(file_in);
byte[] bytes = new byte[1024];
int c;
while ((c = is.read(bytes)) != -1) {
os.write(bytes, 0, c);
}
} finally {
if (is != null) {
is.close();
}
if (os != null) {
os.close();
}
}
return result;
}

/**

從ftp下載文件到本地    

@param filename 服務器上的文件名    
@param newfilename 本地生成的文件名    
@return    
@throws Exception

*/
public long downloadFile(String filename, String newfilename) {
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;
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (is != null) {
is.close();
}
if (os != null) {
os.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
return result;
}

/**

取得相對于當前連接目錄的某個目錄下所有文件列表    

@param path    
@return

*/
public List getFileList(String path) {
List list = new ArrayList();
DataInputStream dis;
try {
dis = new DataInputStream(ftpClient.nameList(this.path + path));
String filename = "";
while ((filename = dis.readLine()) != null) {
list.add(filename);
}
} catch (IOException e) {
e.printStackTrace();
}
return list;
}

public static void main(String[] args) {
FtpUtil ftp = new FtpUtil("133.224.202.2", "tstbill", "tstbill");
ftp.connectServer();
boolean result = ftp.upload("C:/test_why", "test_why/test");
System.out.println(result ? "上傳成功！" : "上傳失敗！");
List list = ftp.getFileList("test_why/test");
for (int i = 0; i < list.size(); i++) {
String name = list.get(i).toString();
System.out.println(name);
}
ftp.closeServer();
/*

FTP遠程命令列表

USER    PORT    RETR    ALLO    DELE    SITE    XMKD    CDUP    FEAT

PASS    PASV    STOR    REST    CWD     STAT    RMD     XCUP    OPTS

ACCT    TYPE    APPE    RNFR    XCWD    HELP    XRMD    STOU    AUTH

REIN    STRU    SMNT    RNTO    LIST    NOOP    PWD     SIZE    PBSZ

QUIT    MODE    SYST    ABOR    NLST    MKD     XPWD    MDTM    PROT

在服務器上執行命令,如果用sendServer來執行遠程命令(不能執行本地FTP命令)的話，所有FTP命令都要加上\r\n

ftpclient.sendServer("XMKD /test/bb\r\n"); //執行服務器上的FTP命令

ftpclient.readServerResponse一定要在sendServer后調用

nameList("/test")獲取指目錄下的文件列表

XMKD建立目錄，當目錄存在的情況下再次創建目錄時報錯

XRMD刪除目錄

DELE刪除文件    /
}
}</pre>
本文由用戶 jopen 自行上傳分享，僅供網友學習交流。所有權歸原作者，若您的權利被侵害，請聯系管理員。
轉載本站原創文章，請注明出處，并保留原始鏈接、圖片水印。
本站是一個以用戶分享為主的開源技術平臺，歡迎各類分享！
本文地址：http://www.baiduhome.net/code/view/1444140740182
Java
java編寫的FTP上傳簡單工具類

相關代碼

相關文檔

相關經驗

目錄
