[Android开发]zip文件压缩解压缩

//----------------- DirTraversal.java 
package com.once; 

import java.io.File; 
import java.util.ArrayList; 
import java.util.LinkedList; 
/** 
* 文件夹遍历 
* @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 实现的Zip工具 
* 
* @author once 
*/ 
public class ZipUtils { 
private static final int BUFF_SIZE = 1024 * 1024; // 1M Byte 

/** 
* 批量压缩文件（夹） 
* 
* @param resFileList 要压缩的文件（夹）列表 
* @param zipFile 生成的压缩文件 
* @throws IOException 当压缩过程出错时抛出 
*/ 
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(); 
} 

/** 
* 批量压缩文件（夹） 
* 
* @param resFileList 要压缩的文件（夹）列表 
* @param zipFile 生成的压缩文件 
* @param comment 压缩文件的注释 
* @throws IOException 当压缩过程出错时抛出 
*/ 
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(); 
} 

/** 
* 解压缩一个文件 
* 
* @param zipFile 压缩文件 
* @param folderPath 解压缩的目标目录 
* @throws IOException 当解压缩过程出错时抛出 
*/ 
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(); 
} 
} 

/** 
* 解压文件名包含传入文字的文件 
* 
* @param zipFile 压缩文件 
* @param folderPath 目标文件夹 
* @param nameContains 传入的文件匹配名 
* @throws ZipException 压缩格式有误时抛出 
* @throws IOException IO错误时抛出 
*/ 
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" 输出 
// str.getBytes("8859_1"),"GB2312" 输入 
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; 
} 

/** 
* 获得压缩文件内文件列表 
* 
* @param zipFile 压缩文件 
* @return 压缩文件内文件名称 
* @throws ZipException 压缩文件格式有误时抛出 
* @throws IOException 当解压缩过程出错时抛出 
*/ 
public static ArrayList<String> getEntriesNames(File zipFile) throws ZipException, IOException { 
ArrayList<String> entryNames = new ArrayList<String>(); 
Enumeration<?> entries = getEntriesEnumeration(zipFile); 
while (entries.hasMoreElements()) { 
ZipEntry entry = ((ZipEntry)entries.nextElement()); 
entryNames.add(new String(getEntryName(entry).getBytes("GB2312"), "8859_1")); 
} 
return entryNames; 
} 

/** 
* 获得压缩文件内压缩文件对象以取得其属性 
* 
* @param zipFile 压缩文件 
* @return 返回一个压缩文件列表 
* @throws ZipException 压缩文件格式有误时抛出 
* @throws IOException IO操作有误时抛出 
*/ 
public static Enumeration<?> getEntriesEnumeration(File zipFile) throws ZipException, 
IOException { 
ZipFile zf = new ZipFile(zipFile); 
return zf.entries(); 

} 

/** 
* 取得压缩文件对象的注释 
* 
* @param entry 压缩文件对象 
* @return 压缩文件对象的注释 
* @throws UnsupportedEncodingException 
*/ 
public static String getEntryComment(ZipEntry entry) throws UnsupportedEncodingException { 
return new String(entry.getComment().getBytes("GB2312"), "8859_1"); 
} 

/** 
* 取得压缩文件对象的名称 
* 
* @param entry 压缩文件对象 
* @return 压缩文件对象的名称 
* @throws UnsupportedEncodingException 
*/ 
public static String getEntryName(ZipEntry entry) throws UnsupportedEncodingException { 
return new String(entry.getName().getBytes("GB2312"), "8859_1"); 
} 

/** 
* 压缩文件 
* 
* @param resFile 需要压缩的文件（夹） 
* @param zipout 压缩的目的文件 
* @param rootpath 压缩的文件路径 
* @throws FileNotFoundException 找不到文件时抛出 
* @throws IOException 当压缩过程出错时抛出 
*/ 
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(); 
} 
} 
} 
转自：http://xxw8393.blog.163.com/blog/static/37256834200992624558643/