| -----------------Dirtraversal.java
Package com.once; Import Java.io.File;
Import java.util.ArrayList;
Import java.util.LinkedList;
/**
* Folder traversal
* @author Once
*
*/
public class Dirtraversal { //no recursion
public static linkedlist<file> listlinkedfiles (String strpath) {
Linkedlist<file > list = new linkedlist<file> ();
File dir = new file (strpath);
File file[] = Dir.listfiles ();
for (int i = 0; i < file.length i++) {
if (file[i].isdirectory ())
List.add (file[i));
Else
System.out.println (File[i].getabsolutepath ());
}
File tmp;
while (!list.isempty ()) {
TMP = (File) list.removefirst ();
if (tmp.isdirectory ()) {
File = Tmp.listfiles ();
if (file = = null)
continue;
for (int i = 0; i < file.length i++) {
if (file[i].isdirectory ())
List.add (file[i));
Else
System.out.println (File[i].getabsolutepath ());
}
Else {
System.out.println (Tmp.getabsolutepath ());
}
}
return list;
}
Recursion
public static arraylist<file> Listfiles (String strpath) {
Return Refreshfilelist (strpath);
}
public static arraylist<file> refreshfilelist (String strpath) {
arraylist<file> filelist = new arraylist<file> ();
File dir = new file (strpath);
file[] files = dir.listfiles (); if (Files = null)
return null;
for (int i = 0; i < files.length; i++) {
if (Files[i].isdirectory ()) {
Refreshfilelist (Files[i].getabsolutepath ());
} else {
if (Files[i].getname (). toLowerCase (). EndsWith ("Zip"))
Filelist.add (Files[i]);
}
}
return filelist;
}
} -----------------Ziputils.java
Package com.once; Import java.io.*;
Import java.util.ArrayList;
Import java.util.Collection;
Import java.util.Enumeration;
Import Java.util.zip.ZipEntry;
Import java.util.zip.ZipException;
Import Java.util.zip.ZipFile;
Import Java.util.zip.ZipOutputStream; /**
* Java utils implementation of the Zip tool
*
* @author Once
*/
public class Ziputils {
private static final int buff_size = 1024 * 1024; 1M Byte /**
* Batch compressed file (clip)
*
* @param resfilelist List of files (folders) to compress
* @param compressed file generated by ZipFile
* @throws IOException When the compression process is wrong
*/
public static void Zipfiles (Collection<file> resfilelist, File zipfile) throws IOException {
Zipoutputstream zipout = new Zipoutputstream (new Bufferedoutputstream, New FileOutputStream (
ZipFile), buff_size);
for (File resfile:resfilelist) {
ZipFile (Resfile, ZipOut, "");
}
Zipout.close ();
} /**
* Batch compressed file (clip)
*
* @param resfilelist List of files (folders) to compress
* @param compressed file generated by ZipFile
* @param Comment Compressed file comments
* @throws IOException When the compression process is wrong
*/
public static void Zipfiles (Collection<file> resfilelist, File ZipFile, String comment)
Throws IOException {
Zipoutputstream zipout = new Zipoutputstream (new Bufferedoutputstream, New FileOutputStream (
ZipFile), buff_size);
for (File resfile:resfilelist) {
ZipFile (Resfile, ZipOut, "");
}
Zipout.setcomment (comment);
Zipout.close ();
} /**
* Unzip a file
*
* @param zipfile Compressed files
* @param the target directory of FolderPath decompression
* @throws IOException When the decompression process fails
*/
public static void Upzipfile (File zipfile, String folderpath) throws Zipexception, IOException {
File Desdir = new file (FolderPath);
if (!desdir.exists ()) {
Desdir.mkdirs ();
}
ZipFile ZF = new ZipFile (ZipFile);
for (enumeration<?> entries = Zf.entries (); entries.hasmoreelements ();) {
ZipEntry entry = ((ZipEntry) entries.nextelement ());
InputStream in = Zf.getinputstream (entry);
String str = folderpath + file.separator + entry.getname ();
str = new String (str.getbytes ("8859_1"), "GB2312");
File Desfile = new file (str);
if (!desfile.exists ()) {
File Fileparentdir = Desfile.getparentfile ();
if (!fileparentdir.exists ()) {
Fileparentdir.mkdirs ();
}
Desfile.createnewfile ();
}
OutputStream out = new FileOutputStream (desfile);
byte buffer[] = new Byte[buff_size];
int reallength;
while ((Reallength = in.read (buffer)) > 0) {
Out.write (buffer, 0, reallength);
}
In.close ();
Out.close ();
}
} /**
* Extract file name containing incoming text
*
* @param zipfile Compressed files
* @param folderpath target folder
* @param namecontains incoming file match name
* @throws zipexception compressed format is incorrect
* Thrown when @throws IOException IO error
*/
public static arraylist<file> Upzipselectedfile (File zipfile, String FolderPath,
String namecontains) throws Zipexception, IOException {
arraylist<file> filelist = new arraylist<file> (); File Desdir = new file (FolderPath);
if (!desdir.exists ()) {
Desdir.mkdir ();
} ZipFile ZF = new ZipFile (ZipFile);
for (enumeration<?> entries = Zf.entries (); entries.hasmoreelements ();) {
ZipEntry entry = ((ZipEntry) entries.nextelement ());
if (Entry.getname (). Contains (Namecontains)) {
InputStream in = Zf.getinputstream (entry);
String str = folderpath + file.separator + entry.getname ();
str = new String (str.getbytes ("8859_1"), "GB2312");
Str.getbytes ("GB2312"), "8859_1" output
Str.getbytes ("8859_1"), "GB2312" input
File Desfile = new file (str);
if (!desfile.exists ()) {
File Fileparentdir = Desfile.getparentfile ();
if (!fileparentdir.exists ()) {
Fileparentdir.mkdirs ();
}
Desfile.createnewfile ();
}
OutputStream out = new FileOutputStream (desfile);
byte buffer[] = new Byte[buff_size];
int reallength;
while ((Reallength = in.read (buffer)) > 0) {
Out.write (buffer, 0, reallength);
}
In.close ();
Out.close ();
Filelist.add (Desfile);
}
}
return filelist;
} /**
* Obtain compressed file list
*
* @param zipfile Compressed file
* @return Compressed file name
* @throws zipexception Compressed file format error Throws the
* @throws ioexception
/
public static arraylist<string> getentriesnames (File zipfile) when the decompression process fails Throws Zipexception, IOException {
arraylist<string> entrynames = new arraylist<string> ();
Enumeration<?> entries = getentriesenumeration (ZipFile);
while (entries.hasmoreelements ()) {
ZipEntry entry = ((ZipEntry) entries.nextelement ());
Entrynames.add (Getentryname (Entry). GetBytes ("GB2312"), "8859_1");
}
Return entrynames;
} /**
* Get the compressed file inside the compressed files object to obtain its properties
*
* @param zipfile Compressed files
* @return return a list of compressed files
* @throws zipexception Compressed file is incorrectly formatted
* @throws IOException IO operation is incorrect
*/
public static enumeration<?> getentriesenumeration (File zipfile) throws Zipexception,
IOException {
ZipFile ZF = new ZipFile (ZipFile);
return Zf.entries (); } /**
* Get a comment on the compressed file object
*
* @param entry Compressed File object
* @return The annotation of the compressed file object
* @throws unsupportedencodingexception
*/
public static String Getentrycomment (ZipEntry entry) throws Unsupportedencodingexception {
return new String (Entry.getcomment (). GetBytes ("GB2312"), "8859_1");
} /**
* Get the name of the compressed file object
*
* @param entry Compressed File object
* @return The name of the compressed file object
* @throws unsupportedencodingexception
*/
public static String Getentryname (ZipEntry entry) throws Unsupportedencodingexception {
return new String (Entry.getname (). GetBytes ("GB2312"), "8859_1");
} /**
* Compress files
*
* @param resfile files (clips) that need to be compressed
* @param zipout Compressed destination file
* @param rootpath Compressed file path
* @throws FileNotFoundException can not find the file when it is thrown
* @throws IOException When the compression process is wrong
*/
private static void ZipFile (File resfile, Zipoutputstream zipout, String RootPath)
Throws FileNotFoundException, IOException {
RootPath = RootPath + (Rootpath.trim (). Length () = 0? "": File.separator)
+ Resfile.getname ();
RootPath = new String (rootpath.getbytes ("8859_1"), "GB2312");
if (Resfile.isdirectory ()) {
file[] filelist = Resfile.listfiles ();
for (File file:filelist) {
ZipFile (file, zipout, RootPath);
}
} else {
byte buffer[] = new Byte[buff_size];
Bufferedinputstream in = new Bufferedinputstream (new FileInputStream (Resfile),
Buff_size);
Zipout.putnextentry (New ZipEntry (RootPath));
int reallength;
while ((Reallength = in.read (buffer))!=-1) {
Zipout.write (buffer, 0, reallength);
}
In.close ();
Zipout.flush ();
Zipout.closeentry ();
}
}
} |
