package com.ycsoft.commons.helper;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;
/**
*
* 对压缩文件的处理函数。
* @author hh
*/
public class ZipHelper {
private ZipHelper(){
}
/**
* <p> 将给定的srcPath目录，将其在同目录下压缩成一个zip文件，名称为文件夹名称 </p>
* @param srcPath
* @throws IOException
*/
public static void zip(String srcPath)throws IOException{
int end = srcPath.lastIndexOf(File.separator) ;
String targetPath = srcPath.substring( 0 , end );
String zipName = srcPath.substring( end + 1 ) ;
zip(srcPath, targetPath, zipName) ;
}
/**
* <p> 将给定的srcPath目录压缩到指定目录的zip文件里，zip名称为文件夹的名称 </p>
* @param srcPath
* @param targetPath
* @throws IOException
*/
public static void zip(String srcPath , String targetPath)throws IOException{
String zipName = srcPath.substring(srcPath.lastIndexOf(File.separator)) ;
zip(srcPath, targetPath, zipName) ;
}
/**
* 将指定的srcPath文件夹，将其压缩到指定路径及zip文件名称的文件
* @param srcPath
* @param targetPath
* @throws IOException
*/
public static void zip(String srcPath , String targetPath , String zipName) throws IOException{
ZipOutputStream out=new ZipOutputStream(
new FileOutputStream( targetPath + File.separator + zipName +".zip" ));
File f = new File( srcPath );
recursiveZip( out, f , "" );
out.close();
}
/**
* 将指定的多个文件(不支持中文文件名)，将其压缩到指定zip文件
* @param fileFullPathList
* @param targetPath
* @param zipName
* @throws IOException
*/
public static void zip(String[] fileFullPathList,String targetPath , String zipName) throws IOException{
ZipOutputStream out=null;
FileInputStream in=null;
try {
byte[] buf = new byte[1024];
out= new ZipOutputStream(new FileOutputStream(targetPath + File.separator + zipName +".zip" ));
for (String nowFilePath:fileFullPathList) {
File nowFile = new File(nowFilePath);
in= new FileInputStream(nowFile);
//out.putNextEntry(new ZipEntry(new String(nowFile.getName().getBytes("gb2312"),"ISO8859-1")));
out.putNextEntry(new ZipEntry(nowFile.getName()));
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
out.closeEntry();
in.close();
in=null;
}
} catch (IOException e) {
throw e;
}finally{
if(out!=null) out.close();
if(in!=null) in.close();
}
}
/**
* 将指定的多个文件(不支持中文文件名)，将其压缩到指定的输出流中
* @param fileFullPathList
* @param targetPath
* @param zipName
* @throws IOException
*/
public static void zip(List<String> fileFullPathList,OutputStream outputstream) throws IOException{
ZipOutputStream out=null;
FileInputStream in=null;
try {
byte[] buf = new byte[1024];
out= new ZipOutputStream(outputstream);
for (String nowFilePath:fileFullPathList) {
File nowFile = new File(nowFilePath);
in= new FileInputStream(nowFile);
//out.putNextEntry(new ZipEntry(new String(nowFile.getName().getBytes("gb2312"),"ISO8859-1")));
out.putNextEntry(new ZipEntry(nowFile.getName()));
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
out.closeEntry();
in.close();
in=null;
}
} catch (IOException e) {
throw e;
}finally{
try{
if(out!=null) out.close();
}catch(Exception e){}
try{
if(in!=null) in.close();
}catch(Exception e){}
}
}
/**
* <p> 递归将子文件写入压缩包 </p>
* @param out zip文件流
* @param f 当前要写入的文件或文件夹
* @param currentPath 当前文件的路径
* @throws IOException
*/
private static void recursiveZip(ZipOutputStream out , File currentF , String currentPath)throws IOException{
if (currentF.isDirectory()){
out.putNextEntry(new ZipEntry( currentPath + "/" ));
currentPath = currentPath.length() == 0 ? "" : currentPath + "/" ;
File[] _fs = currentF.listFiles();
for (File element : _fs) {
recursiveZip( out , element , currentPath + element.getName());
}
}else{
out.putNextEntry( new ZipEntry( currentPath ));
FileInputStream in=new FileInputStream( currentF );
int b;
while (( b = in.read()) != -1)
out.write(b);
in.close();
}
}
/**
* 将在zip文件的同一目录下生一个同名称的文件夹，并将所有的文件解压至该文件夹
* @param zip 指定的zip文件
* @param targetPath 目标文件夹
* @throws Exception
*/
public static void unzip(String zip)
throws IOException {
int last = zip.lastIndexOf(File.separator) + 1 ;
String targetPath = zip.substring( 0 , last - 1 );// - 1：需要删除分隔符
String targetName = zip.substring( last , zip.lastIndexOf('.')) ;
unzip(zip , targetPath , targetName);
}
/**
* 将在给定的zip文件目录下，生成一个指定名称的文件夹，并将所有的文件解压至该文件夹
* @param zip
* @param targetName
* @throws IOException
*/
public static void unzip(String zip , String targetName)throws IOException{
String targetPath = zip.substring( 0 ,zip.lastIndexOf(File.separator) + 1 );
unzip(zip , targetPath , targetName);
}
/**
* <p> 根据指定的zip目录，解压生成指定名称的文件夹并存入指定的硬盘路径， </p>
* @param zip文件的完整名称
* @param targetPath 目标目录
* @param targetName 文件夹名
*/
public static void unzip(String zip , String targetPath , String targetName ) throws IOException{
targetPath = targetPath + File.separator + targetName ;
ZipInputStream zis = new ZipInputStream(new FileInputStream(zip));
ZipEntry ze= null ;
//逐个读取压缩包中的条目
while ((ze = zis.getNextEntry()) != null) {
if (ze.isDirectory()) {
String _n = ze.getName();
_n = _n.substring(0, _n.length() - 1);
new File(targetPath + File.separator + _n).mkdir();
} else {
File _f = new File(targetPath + File.separator+ ze.getName());
_f.createNewFile();
FileOutputStream out = new FileOutputStream(_f);
int b;
while ((b =zis.read()) != -1)
out.write(b);
out.close();
}
}
zis.close();
}
}