private static String encoding = System.getProperty("file.encoding");
...
ftpClient.changeWorkingDirectory(new String(remotePath.getBytes(encoding),"iso-8859-1"));
...
ftpClientInFunction.retrieveFile(new String(fInFunction.getName().getBytes("GBK"),"iso-8859-1"), is);1、编码问题
在FTP协议里面，规定文件名编码为iso-8859-1，所以目录名或文件名需要转码。
private static String encoding = System.getProperty("file.encoding");
https://blog.csdn.net/zlb824/article/details/7742959
2、Apache 自身bug问题
ftpclient listFile方法无法返回正确的数据，一般返回时null ，使用listNames 返回的也是只有文件名，这个是ftpclient 工具包的一个bug，
转门有人给出了解决的代码，需要加入两个类class FTPTimestampParserImplExZH和class UnixFTPEntryParser，这两个类打包在package com.zznode.tnms.ra.c11n.nj.resource.ftp中。
/*
* ftpclient listFile方法无法返回正确的数据，一般返回时null ，使用listNames 返回的也是只有文件名，这个是ftpclient 工具包的一个bug,
* 需要用下面的代码，并在源码中加入：
*
* package com.zznode.tnms.ra.c11n.nj.resource.ftp
*
* class FTPTimestampParserImplExZH
*
* class UnixFTPEntryParser
*/
FTPClientConfig ftpCfg = new FTPClientConfig("com.zznode.tnms.ra.c11n.nj.resource.ftp.UnixFTPEntryParser");需要加入的代码如下：
/**
*
*/
package com.zznode.tnms.ra.c11n.nj.resource.ftp;
import java.text.ParseException;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import org.apache.commons.net.ftp.parser.FTPTimestampParserImpl;
/**
* @desc: 此类的原始贡献瀤?ohzwei206?
* 解决apache ftp中文语言环境下，
* FTPClient.listFiles()为空的bug
* @author<[email protected]>
* @since 2015-7-27
*/
public class FTPTimestampParserImplExZH extends FTPTimestampParserImpl {
private SimpleDateFormat defaultDateFormat = new SimpleDateFormat("mm d HH:mm"); //原来是hh:mm 12小时制，现在改为HH:mm 24小时制
private SimpleDateFormat recentDateFormat = new SimpleDateFormat("yyyy mm d");
/**
* @author hzwei206 将中文环境的时间格式进行转换
*/
private String formatDate_Zh2En(String timeStrZh) {
if (timeStrZh == null) {
return "";
}
int len = timeStrZh.length();
StringBuffer sb = new StringBuffer(len);
char ch = ' ';
for (int i = 0; i < len; i++) {
ch = timeStrZh.charAt(i);
if ((ch >= '0' && ch <= '9') || ch == ' ' || ch == ':') {
sb.append(ch);
}
}
return sb.toString();
}
/**
* Implements the one {@link FTPTimestampParser#parseTimestamp(String) method} in the {@link FTPTimestampParser
* FTPTimestampParser} interface according to this algorithm: If the recentDateFormat member has been defined, try
* to parse the supplied string with that. If that parse fails, or if the recentDateFormat member has not been
* defined, attempt to parse with the defaultDateFormat member. If that fails, throw a ParseException.
*
* @see org.apache.commons.net.ftp.parser.FTPTimestampParser#parseTimestamp(java.lang.String)
*/
public Calendar parseTimestamp(String timestampStr) throws ParseException {
timestampStr = formatDate_Zh2En(timestampStr);
Calendar now = Calendar.getInstance();
now.setTimeZone(this.getServerTimeZone());
Calendar working = Calendar.getInstance();
working.setTimeZone(this.getServerTimeZone());
ParsePosition pp = new ParsePosition(0);
Date parsed = null;
if (this.recentDateFormat != null) {
parsed = recentDateFormat.parse(timestampStr, pp);
}
if (parsed != null && pp.getIndex() == timestampStr.length()) {
working.setTime(parsed);
working.set(Calendar.YEAR, now.get(Calendar.YEAR));
if (working.after(now)) {
working.add(Calendar.YEAR, -1);
}
} else {
pp = new ParsePosition(0);
parsed = defaultDateFormat.parse(timestampStr, pp);
// note, length checks are mandatory for us since
// SimpleDateFormat methods will succeed if less than
// full string is matched. They will also accept,
// despite "leniency" setting, a two-digit number as
// a valid year (e.g. 22:04 will parse as 22 A.D.)
// so could mistakenly confuse an hour with a year,
// if we don't insist on full length parsing.
if (parsed != null && pp.getIndex() == timestampStr.length()) {
working.setTime(parsed);
} else {
throw new ParseException("Timestamp could not be parsed with older or recent DateFormat", pp.getIndex());
}
}
return working;
}
}
另一个class：
package com.zznode.tnms.ra.c11n.nj.resource.ftp;
/*
* Copyright 2001-2005 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import java.text.ParseException;
import java.util.Calendar;
import org.apache.commons.net.ftp.FTPClientConfig;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.parser.ConfigurableFTPFileEntryParserImpl;
import org.apache.log4j.Logger;
/**
* 注：common-net-1.4.1.jar源码，修改对于日期中文格式的支持，从而解决FTPClient.listFiles()返回为空问题
* Implementation FTPFileEntryParser and FTPFileListParser for standard
* Unix Systems.
*
* This class is based on the logic of Daniel Savarese's
* DefaultFTPListParser, but adapted to use regular expressions and to fit the
* new FTPFileEntryParser interface.
* @version $Id: UnixFTPEntryParser.java 161712 2005-04-18 02:57:04Z scohen $
* @see org.apache.commons.net.ftp.FTPFileEntryParser FTPFileEntryParser (for usage instructions)
*/
public class UnixFTPEntryParser extends ConfigurableFTPFileEntryParserImpl
{
private static Logger logger = Logger.getLogger(UnixFTPEntryParser.class);
/**
* months abbreviations looked for by this parser. Also used
* to determine which month is matched by the parser
*/
private static final String DEFAULT_MONTHS =
"(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)";
static final String DEFAULT_DATE_FORMAT
= "MMM d yyyy"; //Nov 9 2001
static final String DEFAULT_RECENT_DATE_FORMAT
= "MMM d HH:mm"; //Nov 9 20:06
static final String NUMERIC_DATE_FORMAT
= "yyyy-MM-dd HH:mm"; //2001-11-09 20:06
/**
* Some Linux distributions are now shipping an FTP server which formats
* file listing dates in an all-numeric format:
* <code>"yyyy-MM-dd HH:mm</code>.
* This is a very welcome development, and hopefully it will soon become
* the standard. However, since it is so new, for now, and possibly
* forever, we merely accomodate it, but do not make it the default.
* <p>
* For now end users may specify this format only via
* <code>UnixFTPEntryParser(FTPClientConfig)</code>.
* Steve Cohen - 2005-04-17
*/
public static final FTPClientConfig NUMERIC_DATE_CONFIG =
new FTPClientConfig(
FTPClientConfig.SYST_UNIX,
NUMERIC_DATE_FORMAT,
null, null, null, null);
/**
* this is the regular expression used by this parser.
*
* Permissions:
* r the file is readable
* w the file is writable
* x the file is executable
* - the indicated permission is not granted
* L mandatory locking occurs during access (the set-group-ID bit is
* on and the group execution bit is off)
* s the set-user-ID or set-group-ID bit is on, and the corresponding
* user or group execution bit is also on
* S undefined bit-state (the set-user-ID bit is on and the user
* execution bit is off)
* t the 1000 (octal) bit, or sticky bit, is on [see chmod(1)], and
* execution is on
* T the 1000 bit is turned on, and execution is off (undefined bit-
* state)
*/
private static final String REGEX =
"([bcdlfmpSs-])"
+"(((r|-)(w|-)([xsStTL-]))((r|-)(w|-)([xsStTL-]))((r|-)(w|-)([xsStTL-])))\\+?\\s+"
+ "(\\d+)\\s+"
+ "(\\S+)\\s+"
+ "(?:(\\S+)\\s+)?"
+ "(\\d+)\\s+"
/*
numeric or standard format date
*/
//问题出在此处，这个匹配只匹配2中形式：
//(1)2008-08-03
//(2)Jan 9憿暿26
//而出错的hp机器下的显示䶿8暿0日（没有空格分开ﺿ
//故无法匹配瀦¥错
//将下面字符串改为ﺿ
+ "((?:\\d+[-/]\\d+[-/]\\d+)|(?:\\S+\\s+\\S+)|(?:\\S+))\\s+"
//+ "((?:\\d+[-/]\\d+[-/]\\d+)|(?:\\S+\\s+\\S+))\\s+"
/*
year (for non-recent standard format)
or time (for numeric or recent standard format
*/
+ "(\\d+(?::\\d+)?)\\s+"
+ "(\\S*)(\\s*.*)";
/**
* The default constructor for a UnixFTPEntryParser object.
*
* @exception IllegalArgumentException
* Thrown if the regular expression is unparseable. Should not be seen
* under normal conditions. It it is seen, this is a sign that
* <code>REGEX</code> is not a valid regular expression.
*/
public UnixFTPEntryParser()
{
this(null);
}
/**
* This constructor allows the creation of a UnixFTPEntryParser object with
* something other than the default configuration.
*
* @param config The {@link FTPClientConfig configuration} object used to
* configure this parser.
* @exception IllegalArgumentException
* Thrown if the regular expression is unparseable. Should not be seen
* under normal conditions. It it is seen, this is a sign that
* <code>REGEX</code> is not a valid regular expression.
* @since 1.4
*/
public UnixFTPEntryParser(FTPClientConfig config)
{
super(REGEX);
configure(config);
}
/**
* Parses a line of a unix (standard) FTP server file listing and converts
* it into a usable format in the form of an <code> FTPFile </code>
* instance. If the file listing line doesn't describe a file,
* <code> null </code> is returned, otherwise a <code> FTPFile </code>
* instance representing the files in the directory is returned.
* <p>
* @param entry A line of text from the file listing
* @return An FTPFile instance corresponding to the supplied entry
*/
public FTPFile parseFTPEntry(String entry) {
FTPFile file = new FTPFile();
file.setRawListing(entry);
int type;
boolean isDevice = false;
if (matches(entry))
{
String typeStr = group(1);
String hardLinkCount = group(15);
String usr = group(16);
String grp = group(17);
String filesize = group(18);
String datestr = group(19) + " " + group(20);
String name = group(21);
String endtoken = group(22);
try
{
//file.setTimestamp(super.parseTimestamp(datestr));
FTPTimestampParserImplExZH Zh2En = new FTPTimestampParserImplExZH();
file.setTimestamp(Zh2En.parseTimestamp(datestr));
}
catch (ParseException e)
{
//logger.error(e, e);
//return null; // this is a parsing failure too.
//logger.info(entry+":修改日期重置为当前时长);
file.setTimestamp(Calendar.getInstance());
}
// bcdlfmpSs-
switch (typeStr.charAt(0))
{
case 'd':
type = FTPFile.DIRECTORY_TYPE;
break;
case 'l':
type = FTPFile.SYMBOLIC_LINK_TYPE;
break;
case 'b':
case 'c':
isDevice = true;
// break; - fall through
case 'f':
case '-':
type = FTPFile.FILE_TYPE;
break;
default:
type = FTPFile.UNKNOWN_TYPE;
}
file.setType(type);
int g = 4;
for (int access = 0; access < 3; access++, g += 4)
{
// Use != '-' to avoid having to check for suid and sticky bits
file.setPermission(access, FTPFile.READ_PERMISSION,
(!group(g).equals("-")));
file.setPermission(access, FTPFile.WRITE_PERMISSION,
(!group(g + 1).equals("-")));
String execPerm = group(g + 2);
if (!execPerm.equals("-") && !Character.isUpperCase(execPerm.charAt(0)))
{
file.setPermission(access, FTPFile.EXECUTE_PERMISSION, true);
}
else
{
file.setPermission(access, FTPFile.EXECUTE_PERMISSION, false);
}
}
if (!isDevice)
{
try
{
file.setHardLinkCount(Integer.parseInt(hardLinkCount));
}
catch (NumberFormatException e)
{
// intentionally do nothing
}
}
file.setUser(usr);
file.setGroup(grp);
try
{
file.setSize(Long.parseLong(filesize));
}
catch (NumberFormatException e)
{
// intentionally do nothing
}
if (null == endtoken)
{
file.setName(name);
}
else
{
// oddball cases like symbolic links, file names
// with spaces in them.
name += endtoken;
if (type == FTPFile.SYMBOLIC_LINK_TYPE)
{
int end = name.indexOf(" -> ");
// Give up if no link indicator is present
if (end == -1)
{
file.setName(name);
}
else
{
file.setName(name.substring(0, end));
file.setLink(name.substring(end + 4));
}
}
else
{
file.setName(name);
}
}
return file;
} else {
logger.info("matches(entry) failure:"+entry);
}
return null;
}
/**
* Defines a default configuration to be used when this class is
* instantiated without a {@link FTPClientConfig FTPClientConfig}
* parameter being specified.
* @return the default configuration for this parser.
*/
protected FTPClientConfig getDefaultConfiguration() {
return new FTPClientConfig(
FTPClientConfig.SYST_UNIX,
DEFAULT_DATE_FORMAT,
DEFAULT_RECENT_DATE_FORMAT,
null, null, null);
}
}