java web实现多文件的打包下载
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java web实现多文件的打包下载
今天花了一天时间实现了一个多文件打包下载的功能，具体流程如下，创建文件夹-&在文件夹下创建文件-&向文件中写内容-&将文件夹打成压缩包-&删除文件夹-&将压缩包发送给客户端-&删除服务器端的压缩包。部分代码如下，以供以后参考：
[java] &p&&//&创建文件夹&&&private&File&createDir(String&path)&{&&&&File&dirFile&=&&&&&try&{&&&&&dirFile&=&new&File(path);&&&&&if&(!(dirFile.exists())&&&&!(dirFile.isDirectory()))&{&&&&&&dirFile.mkdirs();&&&&&}&&&&}&catch&(Exception&e)&{&&&&&e.printStackTrace();&&&&}&&&&return&dirF&&&}&/p&&p&&//&创建文件&&&private&File&createFile(String&path)&{&&&&File&file&=&new&File(path);&&&&try&{&&&&&file.createNewFile();&&&&}&catch&(IOException&e)&{&&&&&e.printStackTrace();&&&&}&&&&return&&&&}&/p&&p&&//&删除文件&&&public&boolean&delFile(String&path)&throws&Exception&{&&&&boolean&result&=&&&&&File&file=new&File(path);&&&&&&if(file.exists()&&file.isFile())&&&&&&{&&&&&file.delete();&&&&&result&=&&&&&}&&&&return&&&&}&/p&&p&&//&删除文件及文件夹&&&private&boolean&delDir(File&folder)&{&&&&boolean&result&=&&&&&try&{&&&&&String&childs[]&=&folder.list();&&&&&if&(childs&==&null&||&childs.length&&=&0)&{&&&&&&if&(folder.delete())&{&&&&&&&result&=&&&&&&&}&&&&&}&else&{&&&&&&for&(int&i&=&0;&i&&&childs.&i++)&{&&&&&&&String&childName&=&childs[i];&&&&&&&String&childPath&=&folder.getPath()&+&File.separator&&&&&&&&&+&childN&&&&&&&File&filePath&=&new&File(childPath);&&&&&&&if&(filePath.exists()&&&&filePath.isFile())&{&&&&&&&&if&(filePath.delete())&{&&&&&&&&&result&=&&&&&&&&&}&else&{&&&&&&&&&result&=&&&&&&&&&&&&&&&&&&}&&&&&&&}&else&if&(filePath.exists()&&&&filePath.isDirectory())&{&&&&&&&&if&(delDir(filePath))&{&&&&&&&&&result&=&&&&&&&&&}&else&{&&&&&&&&&result&=&&&&&&&&&&&&&&&&&&}&&&&&&&}&&&&&&}&&&&&}&/p&&p&&&&folder.delete();&&&&}&catch&(Exception&e)&{&&&&&e.printStackTrace();&&&&&result&=&&&&&}&&&&return&&&&}&/p&&p&&/**&&&*&&&&*&@param&zipFilePath&&&*&&&&&&&&&&&&打包文件存放路径&&&*&@param&inputFolderName&&&*&&&&&&&&&&&&需要打包的文件夹&&&*&@throws&Exception&&&*/&&&public&void&zip(String&zipFilePath,&String&inputFolderName)&&&&&throws&Exception&{&&&&String&zipFileName&=&zipFileP&//&打包后文件名字&&&&File&zipFile&=&new&File(inputFolderName);&&&&zip(zipFileName,&zipFile);&&&}&/p&&p&&private&void&zip(String&zipFileName,&File&inputFolder)&throws&Exception&{&&&&FileOutputStream&fileOut&=&new&FileOutputStream(zipFileName);&&&&ZipOutputStream&out&=&new&ZipOutputStream(fileOut);&&&&zip(out,&inputFolder,&"");&&&&out.close();&&&&fileOut.close();&&&}&/p&&p&&private&void&zip(ZipOutputStream&out,&File&inputFolder,&String&base)&&&&&throws&Exception&{&&&&if&(inputFolder.isDirectory())&{&&&&&File[]&fl&=&inputFolder.listFiles();&&&&&out.putNextEntry(new&org.apache.tools.zip.ZipEntry(base&+&"/"));&&&&&base&=&base.length()&==&0&?&""&:&base&+&"/";&&&&&for&(int&i&=&0;&i&&&fl.&i++)&{&&&&&&zip(out,&fl[i],&base&+&fl[i].getName());&&&&&}&&&&}&else&{&&&&&out.putNextEntry(new&org.apache.tools.zip.ZipEntry(base));&&&&&FileInputStream&in&=&new&FileInputStream(inputFolder);&&&&&int&b;&&&&&//System.out.println(base);&&&&&while&((b&=&in.read())&!=&-1)&{&&&&&&out.write(b);&&&&&}&&&&&in.close();&&&&}&&&}&/p&&&
TA的最新馆藏[转]&[转]&[转]&[转]&[转]&[转]&
喜欢该文的人也喜欢函数库代码PHPZip为：(请复制以下代码保存，以供调用）
Class PHPZip{
Private $StrPath=&../../@UpLoad&;
Private $datasec=array();
Private $ctrl_dir=array();
Private $eof_ctrl_dir=&\x50\x4b\x05\x06\x00\x00\x00\x00&;
Private $old_offset=0;
//压缩后下载
Function DownLoad($curdir,$zipfilename,$out){
$zipfilename=StrToLower($zipfilename);
$curdir=Str_iReplace(basename($curdir),&&,$curdir);
chdir($curdir.$this-&StrPath);
header('Content-Encoding: none');
header('Content-Type: application/zip');
header('Content-Disposition: filename='.Str_Replace(&.zip&,&&,basename($zipfilename)).'.zip');
header('Pragma: no-cache');
header('Expires: 0');
print($out);
//压缩后保存在服务器,默认在/@Upload下
Function SaveFile($curdir,$zipfilename,$out){
$curdir=Str_iReplace(basename($curdir),&&,$curdir);
chdir($curdir.$this-&StrPath);
$fp=fopen($zipfilename,&wb&);
fwrite($fp,$out,strlen($out));
fclose($fp);
//函数用途:压缩文件夹,递归逐层进行
//参数详解:$dir需要压缩的目录,$zipfilename压缩后的文件名及存放路径,$Todo处理方式1提供下载2保存文件在服务器
Function ZipDir($dir,$zipfilename,$Todo){
IF(!@Function_exists('gzcompress')){Return 0;}
@set_time_limit(&0&);
$this-&openFile($dir,$zipfilename);
$out=$this -& filezip();
Switch ($Todo){
$this -& DownLoad(__FILE__,$zipfilename,$out);
$this -& SaveFile(__FILE__,$zipfilename,$out);
//函数用途:压缩文件,可以是单个也可以是数组的多个
//参数详解:$file需要压缩的文件(可为数组),$zipfilename压缩后的文件名及存放路径,$Todo处理方式1提供下载2保存文件在服务器
Function ZipFile($file,$zipfilename,$Todo){
IF(!@Function_exists('gzcompress')){Return 0;}
IF(is_array($file)){
Foreach($file as $filename){
IF(is_file($filename)){
$fd= fopen ($filename, &rb&);
$content= @fread($fd, filesize ($filename));
fclose ($fd);
$filename= basename($filename);
$this -& addFile($content, $filename);
IF(is_file($file)){
$fd= fopen ($file, &rb&);
$content= @fread($fd, filesize($file));
fclose ($fd);
$file= basename($file);
$this -& addFile($content, $file);
$out= $this -& filezip();
Switch ($Todo){
$this -& DownLoad(__FILE__,$zipfilename,$out);
$this -& SaveFile(__FILE__,$zipfilename,$out);
//递归取得下层文件夹下的文件
Function openFile($path,$zipName){
$temp_path=$path;
$temp_zip_path=$zipName;
IF($handle=@opendir($path)){
While(false !== ($file=readdir($handle))){
IF($file !='.' and $file !='..'){
IF(ereg('\.' ,$file.@basename())){
$fd=fopen($path.'/'.$file,&r&);
$fileValue=@fread($fd,1024000);
fclose ($fd);
$this -& addFile($fileValue,$path.'/'.$file);
$this -&openFile($path.'/'.$file,$zipName.'/'.$file);
$zipName=$temp_zip_path;
$path=$temp_path;
closedir($handle);
Function addFile($data,$name,$time=0){
$name=str_replace('\\','/',$name);
$name=str_replace('./','',str_replace('../','',$name));
$dtime=dechex($this-&unix2DosTime($time));
$hexdtime='\x'.$dtime[6].$dtime[7].'\x'.$dtime[4].$dtime[5].'\x'.$dtime[2].$dtime[3].'\x'.$dtime[0].$dtime[1];
Eval('$hexdtime=&'.$hexdtime.'&;');
$fr=&\x50\x4b\x03\x04&;
$fr.=&\x14\x00&;
$fr.=&\x00\x00&;
$fr.=&\x08\x00&;
$fr.=$hexdtime;
$unc_len=strlen($data);
$crc=crc32($data);
$zdata=gzcompress($data);
$c_len=strlen($zdata);
$zdata=substr(substr($zdata,0,strlen($zdata) - 4),2);
$fr.=pack('V',$crc);
$fr.=pack('V',$c_len);
$fr.=pack('V',$unc_len);
$fr.=pack('v',strlen($name));
$fr.=pack('v',0);
$fr.=$name;
$fr.=$zdata;
$fr.=pack('V',$crc);
$fr.=pack('V',$c_len);
$fr.=pack('V',$unc_len);
$this -& datasec[]=$fr;
$new_offset=strlen(implode('',$this-&datasec));
$cdrec=&\x50\x4b\x01\x02&;
$cdrec.=&\x00\x00&;
$cdrec.=&\x14\x00&;
$cdrec.=&\x00\x00&;
$cdrec.=&\x08\x00&;
$cdrec.=$hexdtime;
$cdrec.=pack('V',$crc);
$cdrec.=pack('V',$c_len);
$cdrec.=pack('V',$unc_len);
$cdrec.=pack('v',strlen($name) );
$cdrec.=pack('v',0 );
$cdrec.=pack('v',0 );
$cdrec.=pack('v',0 );
$cdrec.=pack('v',0 );
$cdrec.=pack('V',32 );
$cdrec.=pack('V',$this -& old_offset );
$this -& old_offset=$new_offset;
$cdrec.=$name;
$this -& ctrl_dir[]=$cdrec;
Function filezip(){
$data=implode('',$this -& datasec);
$ctrldir=implode('',$this -& ctrl_dir);
$data.$ctrldir.$this -& eof_ctrl_dir .
pack('v',sizeof($this -& ctrl_dir)) .
pack('v',sizeof($this -& ctrl_dir)) .
pack('V',strlen($ctrldir)) .
pack('V',strlen($data)).&\x00\x00&;
Function unix2DosTime($unixtime=0){
$timearray=($unixtime== 0) ? getdate() : getdate($unixtime);
IF($timearray['year'] & 1980){
$timearray['year']=1980;
$timearray['mon']=1;
$timearray['mday']=1;
$timearray['hours']=0;
$timearray['minutes']=0;
$timearray['seconds']=0;
Return (($timearray['year'] - 1980) && 25) | ($timearray['mon'] && 21) | ($timearray['mday'] && 16) | ($timearray['hours'] && 11) | ($timearray['minutes'] && 5) | ($timearray['seconds'] && 1);
解压缩部分
用途:解压缩文件
参数:$zn需要解压缩的zip文件及路径,$to解压缩的目的地
Function Unzip_File($zn, $to, $index = Array(-1)){
$zip = @fopen($zn, 'rb');
IF(!$zip){Return(-1);}
$cdir = $this -& ReadCentralDir($zip, $zn);
$pos_entry = $cdir['offset'];
IF(!is_array($index)){
$index = array($index);
For($i = 0; $index[$i];$i++){
IF(intval($index[$i])!= $index[$i] || $index[$i] & $cdir['entries']){Return(-1);}
For($i=0;$i&$cdir['entries'];$i++){
@fseek($zip, $pos_entry);
$header = $this -& ReadCentralFileHeaders($zip);
$header['index'] = $i;
$pos_entry = ftell($zip);
@rewind($zip);
fseek($zip, $header['offset']);
IF(in_array(&-1&, $index) || in_array($i, $index)){$stat[$header['filename']] = $this -& ExtractFile($header, $to, $zip);}
fclose($zip);
Return $stat;
//取得压缩包内的文件信息
Function get_List($zip_name){
$zip = @fopen($zip_name, 'rb');
IF(!$zip){Return(0);}
$centd = $this -& ReadCentralDir($zip, $zip_name);
@rewind($zip);
@fseek($zip, $centd['offset']);
For($i=0;$i&$centd['entries'];$i++){
$header = $this -& ReadCentralFileHeaders($zip);
$header['index'] = $i;
$info['filename'] = $header['filename'];
$info['stored_filename'] = $header['stored_filename'];
$info['size'] = $header['size'];
$info['compressed_size'] = $header['compressed_size'];
$info['crc'] = strtoupper(dechex($header['crc']));
$info['mtime'] = $header['mtime'];
$info['comment'] = $header['comment'];
$info['folder'] = ($header['external'] == 0x41FF0010 || $header['external'] == 16)?1:0;
$info['index'] = $header['index'];
$info['status'] = $header['status'];
$ret[] = $info;
unset($header);
Return $ret;
Function ReadFileHeader($zip){
$binary_data = fread($zip, 30);
$data = unpack('vchk/vid/vversion/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len', $binary_data);
$header['filename'] = fread($zip, $data['filename_len']);
IF($data['extra_len'] != 0){$header['extra'] = fread($zip, $data['extra_len']);}Else{$header['extra'] = '';}
$header['compression'] = $data['compression'];
$header['size'] = $data['size'];
$header['compressed_size'] = $data['compressed_size'];
$header['crc'] = $data['crc'];
$header['flag'] = $data['flag'];
$header['mdate'] = $data['mdate'];
$header['mtime'] = $data['mtime'];
IF($header['mdate'] && $header['mtime']){
$hour = ($header['mtime']&0xF800) && 11;
$minute = ($header['mtime']&0x07E0) && 5;
$seconde = ($header['mtime']&0x001F) * 2;
$year = (($header['mdate']&0xFE00) && 9) + 1980;
$month = ($header['mdate']&0x01E0) && 5;
$day = $header['mdate']&0x001F;
$header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);
$header['mtime'] = time();
$header['stored_filename'] = $header['filename'];
$header['status'] = &ok&;
Return $header;
Function ReadCentralFileHeaders($zip){
$binary_data = fread($zip, 46);
$header = unpack('vchkid/vid/vversion/vversion_extracted/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len/vcomment_len/vdisk/vinternal/Vexternal/Voffset', $binary_data);
IF($header['filename_len'] != 0)
$header['filename'] = fread($zip, $header['filename_len']);
Else $header['filename'] = '';
IF($header['extra_len'] != 0)
$header['extra'] = fread($zip, $header['extra_len']);
Else $header['extra'] = '';
IF($header['comment_len'] != 0)
$header['comment'] = fread($zip, $header['comment_len']);
Else $header['comment'] = '';
IF($header['mdate'] && $header['mtime']){
$hour = ($header['mtime'] &0xF800) && 11;
$minute = ($header['mtime'] &0x07E0) && 5;
$seconde = ($header['mtime'] &0x001F) * 2;
$year = (($header['mdate'] &0xFE00) && 9) + 1980;
$month = ($header['mdate'] &0x01E0) && 5;
$day = $header['mdate'] &0x001F;
$header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);
$header['mtime'] = time();
$header['stored_filename'] = $header['filename'];
$header['status'] = 'ok';
IF(substr($header['filename'], -1) == '/')
$header['external'] = 0x41FF0010;
Return $header;
Function ReadCentralDir($zip, $zip_name){
$size = filesize($zip_name);
IF($size & 277){$maximum_size = $size;}Else{$maximum_size = 277;}
@fseek($zip, $size - $maximum_size);
$pos = ftell($zip);
$bytes = 0x;
While($pos & $size){
$byte = @fread($zip, 1);
$bytes = ($bytes && 8) | Ord($byte);
IF($bytes == 0x504b0506){
$pos++;
$pos++;
$data = unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size', fread($zip, 18));
IF($data['comment_size'] != 0){$centd['comment'] = fread($zip, $data['comment_size']);}Else{$centd['comment'] = '';}
$centd['entries'] = $data['entries'];
$centd['disk_entries'] = $data['disk_entries'];
$centd['offset'] = $data['offset'];
$centd['disk_start'] = $data['disk_start'];
$centd['size'] = $data['size'];
$centd['disk'] = $data['disk'];
Return $centd;
Function ExtractFile($header, $to, $zip){
$header = $this -& readfileheader($zip);
IF(substr($to, -1) != &/&) $to .= &/&;
IF(!@is_dir($to)) @mkdir($to, 0777);
$pth = explode(&/&, dirname($header['filename']));
For($i = 0;isset($pth[$i]);$i++){
IF(!$pth[$i]) continue;
$pthss .= $pth[$i] . &/&;
IF(!is_dir($to . $pthss)) @mkdir($to . $pthss, 0777);
IF(!($header['external'] == 0x41FF0010) && !($header['external'] == 16)){
IF($header['compression'] == 0){
$fp = @fopen($to . $header['filename'], 'wb');
IF(!$fp) Return(-1);
$size = $header['compressed_size'];
While($size != 0){
$read_size = ($size & 2048 ? $size : 2048);
$buffer = fread($zip, $read_size);
$binary_data = pack('a' . $read_size, $buffer);
@fwrite($fp, $binary_data, $read_size);
$size -= $read_size;
fclose($fp);
touch($to . $header['filename'], $header['mtime']);
$fp = @fopen($to . $header['filename'] . '.gz', 'wb');
IF(!$fp) Return(-1);
$binary_data = pack('va1a1Va1a1', 0x8b1f, Chr($header['compression']),
Chr(0x00), time(), Chr(0x00), Chr(3));
fwrite($fp, $binary_data, 10);
$size = $header['compressed_size'];
While($size != 0){
$read_size = ($size & 1024 ? $size : 1024);
$buffer = fread($zip, $read_size);
$binary_data = pack('a' . $read_size, $buffer);
@fwrite($fp, $binary_data, $read_size);
$size -= $read_size;
$binary_data = pack('VV', $header['crc'], $header['size']);
fwrite($fp, $binary_data, 8);
fclose($fp);
$gzp = @gzopen($to . $header['filename'] . '.gz', 'rb') or die(&Cette archive est compress閑&);
IF(!$gzp) Return(-2);
$fp = @fopen($to . $header['filename'], 'wb');
IF(!$fp) Return(-1);
$size = $header['size'];
While($size != 0){
$read_size = ($size & 2048 ? $size : 2048);
$buffer = gzread($gzp, $read_size);
$binary_data = pack('a' . $read_size, $buffer);
@fwrite($fp, $binary_data, $read_size);
$size -= $read_size;
fclose($fp);
gzclose($gzp);
touch($to . $header['filename'], $header['mtime']);
@unlink($to . $header['filename'] . '.gz');
Return true;
使用方法：
函数:文件压缩
压缩参数:需要压缩的文件或文件夹(文件可为数组),压缩后的zip文件名及存放路径,压缩类型1:文件夹2:文件,后续操作1:压缩后下载;2:存放在服务器上(默认为/@Upload下)
压缩文件夹示例:Tozip(&./&,&../&.date(&d-H-i-s&).&.zip&,1,2);
压缩文件示例:
$aaa=array(&../1.txt&,&../2.txt&);
Tozip($aaa,&../2.zip&,2);
用法举例：
比如有这样一段文件结构：
--------zip.php(这是上面的代码库）
------download.php
使用download.php中的代码，实现upload文件夹打包并自动下载：
Function Tozip($Path,$ZipFile,$Typ=1,$Todo=1){
//IF(!is_writeable($Path)){Exit(&文件夹不可写!&);}
$Path=Str_iReplace(&\\&,&/&,($Path));
IF(Is_Null($Path) Or Empty($Path) Or !IsSet($Path)){Return False;}
IF(Is_Null($ZipFile) Or Empty($ZipFile) Or !IsSet($ZipFile)){Return False;}
Include_once(&inc/zip.php&); // 载入代码库，注意路径
$zip = New PHPZip;
IF(SubStr($Path,-1,1)==&/&){$Path=SubStr($Path,0,StrLen($Path)-1);}
OB_end_clean();
Switch ($Typ){
$zip-&ZipDir($Path,$ZipFile,$Todo);
$zip-&ZipFile($Path,$ZipFile,$Todo);
IF($Todo==1){
Return True;
Tozip(&././upload&, &../../upload.zip&,1,1)
文章来源：/entry/65761
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class PHPZip{
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