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 實現的Zip工具
*
* @author once
*/
public class ZipUtils {
private static final int BUFF_SIZE = 1024 * 1024; // 1M Byte
/**
* 批量壓縮文件（夾）
*
* @param resFileList 要壓縮的文件（夾）列表
* @param zipFile 生成的壓縮文件
* @throws IOException 當壓縮過程出錯時拋出
*/
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();
}
/**
* 批量壓縮文件（夾）
*
* @param resFileList 要壓縮的文件（夾）列表
* @param zipFile 生成的壓縮文件
* @param comment 壓縮文件的註釋
* @throws IOException 當壓縮過程出錯時拋出
*/
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();
}
/**
* 解壓縮壹個文件
*
* @param zipFile 壓縮文件
* @param folderPath 解壓縮的目標目錄
* @throws IOException 當解壓縮過程出錯時拋出
*/
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();
}
}
/**
* 解壓文件名包含傳入文字的文件
*
* @param zipFile 壓縮文件
* @param folderPath 目標文件夾
* @param nameContains 傳入的文件匹配名
* @throws ZipException 壓縮格式有誤時拋出
* @throws IOException IO錯誤時拋出
*/
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" 輸出
// str.getBytes("8859_1"),"GB2312" 輸入
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;
}
/**
* 獲得壓縮文件內文件列表
*
* @param zipFile 壓縮文件
* @return 壓縮文件內文件名稱
* @throws ZipException 壓縮文件格式有誤時拋出
* @throws IOException 當解壓縮過程出錯時拋出
*/
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;
}
/**
* 獲得壓縮文件內壓縮文件對象以取得其屬性
*
* @param zipFile 壓縮文件
* @return 返回壹個壓縮文件列表
* @throws ZipException 壓縮文件格式有誤時拋出
* @throws IOException IO操作有誤時拋出
*/
public static Enumeration<?> getEntriesEnumeration(File zipFile) throws ZipException,
IOException {
ZipFile zf = new ZipFile(zipFile);
return zf.entries();
}
/**
* 取得壓縮文件對象的註釋
*
* @param entry 壓縮文件對象
* @return 壓縮文件對象的註釋
* @throws UnsupportedEncodingException
*/
public static String getEntryComment(ZipEntry entry) throws UnsupportedEncodingException {
return new String(entry.getComment().getBytes("GB2312"), "8859_1");
}
/**
* 取得壓縮文件對象的名稱
*
* @param entry 壓縮文件對象
* @return 壓縮文件對象的名稱
* @throws UnsupportedEncodingException
*/
public static String getEntryName(ZipEntry entry) throws UnsupportedEncodingException {
return new String(entry.getName().getBytes("GB2312"), "8859_1");
}
/**
* 壓縮文件
*
* @param resFile 需要壓縮的文件（夾）
* @param zipout 壓縮的目的文件
* @param rootpath 壓縮的文件路徑
* @throws FileNotFoundException 找不到文件時拋出
* @throws IOException 當壓縮過程出錯時拋出
*/
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();
}
}
}