转 java通过ftp上传、下载文件，遍历文件目录

l75k468c7b

001	import java.io.DataInputStream;

002	import java.io.File;

003	import java.io.FileInputStream;

004	import java.io.FileOutputStream;

005	import java.io.IOException;

006	import java.util.ArrayList;

007	import java.util.List;

008

009	import org.apache.catalina.tribes.util.Logs;

010

011	import sun.net.TelnetInputStream;

012	import sun.net.TelnetOutputStream;

013	import sun.net.ftp.FtpClient;

014

015	public class DownFileForFtp {

016	FtpClient ftpClient;

017	private String server = "ip";

018	private int port = 21;

019	private String userName = "usn";

020	private String userPassword = "pwd";

021

022

/**

023

* 链接到服务器

024

*

025

* @return

026

*/

027	public boolean open() {

028	if (ftpClient != null && ftpClient.serverIsOpen())

029	return true;

030

try {

031	ftpClient = new FtpClient();

032	ftpClient.openServer(server, port);

033	ftpClient.login(userName, userPassword);

034	ftpClient.binary();

035	return true;

036	} catch (Exception e) {

037	e.printStackTrace();

038	ftpClient = null;

039	return false;

040

}

041

}

042

043	public boolean cd(String dir) {

044	boolean f = false;

045

try {

046	ftpClient.cd(dir);

047	} catch (IOException e) {

048	//Logs.error(e.toString());

049

return f;

050

}

051	return true;

052

}

053

054

/**

055	* 上传文件到FTP服务器

056

*

057	* @param localPathAndFileName

058	*            本地文件目录和文件名

059	* @param ftpFileName

060	*            上传后的文件名

061	* @param ftpDirectory

062	*            FTP目录如:/path1/pathb2/,如果目录不存在回自动创建目录

063	* @throws Exception

064

*/

065	public boolean upload(String localDirectoryAndFileName, String ftpFileName,

066	String ftpDirectory) throws Exception {

067	if (!open())

068	return false;

069	FileInputStream is = null;

070	TelnetOutputStream os = null;

071

try {

072	char ch = ' ';

073	if (ftpDirectory.length() > 0)

074	ch = ftpDirectory.charAt(ftpDirectory.length() - 1);

075	for (; ch == '/' || ch == '\\'; ch = ftpDirectory

076	.charAt(ftpDirectory.length() - 1))

077	ftpDirectory = ftpDirectory.substring(0,

078	ftpDirectory.length() - 1);

079

080	int slashIndex = ftpDirectory.indexOf(47);

081	int backslashIndex = ftpDirectory.indexOf(92);

082	int index = slashIndex;

083	String dirall = ftpDirectory;

084	if (backslashIndex != -1 && (index == -1 || index > backslashIndex))

085	index = backslashIndex;

086	String directory = "";

087	while (index != -1) {

088	if (index > 0) {

089	String dir = dirall.substring(0, index);

090	directory = directory + "/" + dir;

091	ftpClient.sendServer("XMKD " + directory + "\r\n");

092	ftpClient.readServerResponse();

093

}

094	dirall = dirall.substring(index + 1);

095	slashIndex = dirall.indexOf(47);

096	backslashIndex = dirall.indexOf(92);

097	index = slashIndex;

098	if (backslashIndex != -1

099	&& (index == -1 || index > backslashIndex))

100	index = backslashIndex;

101

}

102	ftpClient.sendServer("XMKD " + ftpDirectory + "\r\n");

103	ftpClient.readServerResponse();

104

105	os = ftpClient.put(ftpDirectory + "/" + ftpFileName);

106	File file_in = new File(localDirectoryAndFileName);

107	is = new FileInputStream(file_in);

108	byte bytes[] = new byte[1024];

109

int i;

110	while ((i = is.read(bytes)) != -1)

111	os.write(bytes, 0, i);

112

// 清理垃圾

113

114	return true;

115	} catch (Exception e) {

116	e.printStackTrace();

117	return false;

118	} finally {

119	if (is != null)

120	is.close();

121	if (os != null)

122	os.close();

123

}

124

}

125

126

/**

127	* 从FTP服务器上下载文件并返回下载文件长度

128

*

129	* @param ftpDirectoryAndFileName

130	* @param localDirectoryAndFileName

131

* @return

132	* @throws Exception

133

*/

134	public long download(String ftpDirectoryAndFileName,

135	String localDirectoryAndFileName) throws Exception {

136	long result = 0;

137	if (!open())

138	return result;

139	TelnetInputStream is = null;

140	FileOutputStream os = null;

141

try {

142	is = ftpClient.get(ftpDirectoryAndFileName);

143	java.io.File outfile = new java.io.File(localDirectoryAndFileName);

144	os = new FileOutputStream(outfile);

145	byte[] bytes = new byte[1024];

146

int c;

147	while ((c = is.read(bytes)) != -1) {

148	os.write(bytes, 0, c);

149	result = result + c;

150

}

151	} catch (Exception e) {

152

throw e;

153	} finally {

154	if (is != null)

155	is.close();

156	if (os != null)

157	os.close();

158

159

}

160	return result;

161

}

162

163

/**

164	* 返回FTP目录下的文件列表

165

*

166	* @param ftpDirectory

167

* @return

168

*/

169	public List<String> getFileNameList(String ftpDirectory) {

170	List<String> list = new ArrayList<String>();

171	if (!open())

172	return list;

173

try {

174	DataInputStream dis = new DataInputStream(

175	ftpClient.nameList(ftpDirectory));

176	String filename = "";

177	while ((filename = dis.readLine()) != null) {

178	list.add(filename);

179	System.out.println(filename);

180

}

181	} catch (Exception e) {

182	e.printStackTrace();

183

}

184	return list;

185

}

186

187

/**

188	* 删除FTP上的文件

189

*

190	* @param ftpDirAndFileName

191

*/

192	public boolean deleteFile(String ftpDirAndFileName) {

193	if (!open())

194	return false;

195	ftpClient.sendServer("DELE " + ftpDirAndFileName + "\r\n");

196	return true;

197

}

198

199

/**

200

* 删除FTP目录

201

*

202	* @param ftpDirectory

203

*/

204	public boolean deleteDirectory(String ftpDirectory) {

205	if (!open())

206	return false;

207	ftpClient.sendServer("XRMD " + ftpDirectory + "\r\n");

208	return true;

209

}

210

211

/**

212

* 关闭链接

213

*/

214	public void close() {

215

try {

216	if (ftpClient != null && ftpClient.serverIsOpen())

217	ftpClient.closeServer();

218	} catch (Exception e) {

219

220

}

221

}

222

223	public static void main(String []args) throws Exception{

224	DownFileForFtp df = new DownFileForFtp();

225	df.getFileNameList("E:\\uploadfiles\\cat");

226	df.download("E:\\uploadfiles\\cat\\2012-03-29.11.00.00.012.xml", "F:\\temp\\ftpdown\\2012-03-29.11.00.00.012.xml");

227

228

}

229

230

}