[1].[代码] ftp上传和删除 跳至 [1] [2] [3]
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package
com.itv.launcher.util;
import
java.io.File;
import
java.io.FileInputStream;
import
java.io.FileNotFoundException;
import
java.io.IOException;
import
java.net.InetSocketAddress;
import
java.util.Properties;
import
java.util.StringTokenizer;
import
sun.net.TelnetOutputStream;
import
sun.net.ftp.FtpClient;
import
sun.net.ftp.FtpProtocolException;
/**
* FTP上传工具类
*
* @author yanzhou
* @version v1.0
*/
public
class
FTPUtil {
private
static
FtpClient ftpClient =
null
;
private
static
final
String url;
private
static
final
int
port;
private
static
final
String user;
private
static
final
String password;
private
static
final
String remoteFilePath;
static
{
Properties FTPPro = ReadFTPProperties.getMsgFromPro();
url = FTPPro.getProperty(
"FTP_URL"
);
port = Integer.parseInt(FTPPro.getProperty(
"FTP_PORT"
));
user = FTPPro.getProperty(
"FTP_USER"
);
password = FTPPro.getProperty(
"FTP_PASSWORD"
);
remoteFilePath = FTPPro.getProperty(
"FTP_REMOTE_FILEPATH"
);
}
/**
* 链接FTP
* @throws FtpProtocolException
*/
private
static
void
connectFTP()
throws
FtpProtocolException {
try
{
ftpClient = FtpClient.create();
ftpClient.connect(
new
InetSocketAddress(url, port));
ftpClient.login(user, password.toCharArray());
ftpClient.setBinaryType();
if
(!
""
.equals(remoteFilePath) && remoteFilePath !=
null
) {
ftpClient.changeDirectory(remoteFilePath);
}
}
catch
(IOException e) {
e.printStackTrace();
}
}
/**
* 关闭FTP链接
*/
public
static
void
closeFTP() {
try
{
if
(ftpClient !=
null
) {
ftpClient.close();
}
}
catch
(IOException e) {
e.printStackTrace();
}
}
/**
* 上传文件到FTP
* @param file file文件,struts2从页面得到的File类型
* @param filePath 要保存在FTP上的路径(文件夹)
* @param fileName 文件名(test001.jpg)
* @return 文件是否上传成功
* @throws Exception
*/
public
static
boolean
upload(File file, String filePath, String fileName) {
TelnetOutputStream to =
null
;
FileInputStream fi =
null
;
filePath = remoteFilePath + Constants.FILE_SEPARATOR + filePath;
try
{
if
(file !=
null
) {
connectFTP();
if
(!isDirExist(filePath.replace(
"\\"
,
"/"
))) {
createDir(filePath.replace(
"\\"
,
"/"
));
ftpClient.changeDirectory(filePath.replace(
"\\"
,
"/"
));
}
fi =
new
FileInputStream(file);
to = (TelnetOutputStream) ftpClient.putFileStream(fileName,
true
);
byte
[] bytes =
new
byte
[
1024
];
int
i = fi.read(bytes);
while
(i != -
1
) {
to.write(bytes);
i = fi.read(bytes);
}
}
return
true
;
}
catch
(FileNotFoundException e1) {
return
false
;
}
catch
(IOException e2) {
return
false
;
}
catch
(Exception e) {
return
false
;
}
finally
{
if
(fi !=
null
) {
try
{
fi.close();
}
catch
(IOException e) {
e.printStackTrace();
}
}
if
(to !=
null
) {
try
{
to.flush();
to.close();
}
catch
(IOException e) {
e.printStackTrace();
}
}
closeFTP();
}
}
/**
* 删除FTP制定目录下的文件
* @param filePath 文件在FTP存储的路径
* @param fileName 要删除的文件名称
* @return 是否删除成功
*/
public
static
boolean
deleteFileFtp(String filePath, String fileName){
try
{
connectFTP();
filePath = remoteFilePath + Constants.FILE_SEPARATOR + filePath + Constants.FILE_SEPARATOR;
if
(!isDirExist(filePath.replace(
"\\"
,
"/"
))) {
return
false
;
}
ftpClient.changeDirectory(filePath.replace(
"\\"
,
"/"
));
ftpClient.deleteFile(fileName);
return
true
;
}
catch
(Exception e) {
e.printStackTrace();
return
false
;
}
finally
{
closeFTP();
}
}
/**
* 检查文件夹是否存在
*
* @param dir
* @param ftpClient
* @return
*/
private
static
Boolean isDirExist(String dir) {
try
{
ftpClient.changeDirectory(dir);
}
catch
(Exception e) {
return
false
;
}
return
true
;
}
/**
* 创建文件夹
*
* @param dir
* @param ftpClient
* @throws Exception
*/
private
static
void
createDir(String dir)
throws
Exception {
ftpClient.setAsciiType();
StringTokenizer s =
new
StringTokenizer(dir,
"/"
);
// sign
s.countTokens();
String pathName =
""
;
while
(s.hasMoreElements()) {
pathName = pathName +
"/"
+ (String) s.nextElement();
try
{
ftpClient.makeDirectory(pathName);
}
catch
(Exception e) {
e =
null
;
}
}
ftpClient.setBinaryType();
}
}
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