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 xx
*/
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 160314
@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());
//ss:if it's a filedir,it need to be opened 160314
//String name = entry.getName();
//if(name.endsWith(File.separator))
//continue;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();
}
}
}
