Java utils 实现的Zip工具
/**
* Java utils 实现的Zip工具
*
* @author miaowei
*/
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());
if (entry.isDirectory()) {
continue;
}
InputStream in = zf.getInputStream(entry);
String str = folderPath + File.separator + entry.getName();
str = new String(str.getBytes(), "utf-8");
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("utf-8"), "gbk");
// 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(), "utf-8");
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();
}
}
//第二种实现
public static void zip(String src, String dest) throws IOException {
// 提供了一个数据项压缩成一个ZIP归档输出流
ZipOutputStream out = null;
try {
//DirTraversal.makeRootDirectory(dest);
//File outFile = DirTraversal.getFilePath(dest,"cache.zip");
File outFile = new File(dest);// 源文件或者目录
File fileOrDirectory = new File(src);// 压缩文件路径
out = new ZipOutputStream(new FileOutputStream(outFile));
// 如果此文件是一个文件，否则为false。
if (fileOrDirectory.isFile()) {
zipFileOrDirectory(out, fileOrDirectory, "");
} else {
// 返回一个文件或空阵列。
File[] entries = fileOrDirectory.listFiles();
for (int i = 0; i < entries.length; i++) {
// 递归压缩，更新curPaths
zipFileOrDirectory(out, entries[i], "");
}
}
ToastUtils.showShort("压缩成功");
} catch (IOException ex) {
ex.printStackTrace();
ToastUtils.showShort("压缩失败");
} finally {
// 关闭输出流
if (out != null) {
try {
out.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
}
private static void zipFileOrDirectory(ZipOutputStream out,
File fileOrDirectory, String curPath) throws IOException {
// 从文件中读取字节的输入流
FileInputStream in = null;
try {
// 如果此文件是一个目录，否则返回false。
if (!fileOrDirectory.isDirectory()) {
// 压缩文件
byte[] buffer = new byte[4096];
int bytes_read;
in = new FileInputStream(fileOrDirectory);
// 实例代表一个条目内的ZIP归档
ZipEntry entry = new ZipEntry(curPath
+ fileOrDirectory.getName());
// 条目的信息写入底层流
out.putNextEntry(entry);
while ((bytes_read = in.read(buffer)) != -1) {
out.write(buffer, 0, bytes_read);
}
out.closeEntry();
} else {
// 压缩目录
File[] entries = fileOrDirectory.listFiles();
for (int i = 0; i < entries.length; i++) {
// 递归压缩，更新curPaths
zipFileOrDirectory(out, entries[i], curPath
+ fileOrDirectory.getName() + "/");
}
}
} catch (IOException ex) {
ex.printStackTrace();
// throw ex;
} finally {
if (in != null) {
try {
in.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
}
@SuppressWarnings("unchecked")
public static void unzip(String zipFileName, String outputDirectory)
throws IOException {
ZipFile zipFile = null;
try {
zipFile = new ZipFile(zipFileName);
Enumeration e = zipFile.entries();
ZipEntry zipEntry = null;
File dest = new File(outputDirectory);
dest.mkdirs();
while (e.hasMoreElements()) {
zipEntry = (ZipEntry) e.nextElement();
String entryName = zipEntry.getName();
InputStream in = null;
FileOutputStream out = null;
try {
if (zipEntry.isDirectory()) {
String name = zipEntry.getName();
name = name.substring(0, name.length() - 1);
File f = new File(outputDirectory + File.separator
+ name);
f.mkdirs();
} else {
int index = entryName.lastIndexOf("\\");
if (index != -1) {
File df = new File(outputDirectory + File.separator
+ entryName.substring(0, index));
df.mkdirs();
}
index = entryName.lastIndexOf("/");
if (index != -1) {
File df = new File(outputDirectory + File.separator
+ entryName.substring(0, index));
df.mkdirs();
}
File f = new File(outputDirectory + File.separator
+ zipEntry.getName());
// f.createNewFile();
in = zipFile.getInputStream(zipEntry);
out = new FileOutputStream(f);
int c;
byte[] by = new byte[1024];
while ((c = in.read(by)) != -1) {
out.write(by, 0, c);
}
out.flush();
}
} catch (IOException ex) {
ex.printStackTrace();
throw new IOException("解压失败：" + ex.toString());
} finally {
if (in != null) {
try {
in.close();
} catch (IOException ex) {
}
}
if (out != null) {
try {
out.close();
} catch (IOException ex) {
}
}
}
}
} catch (IOException ex) {
ex.printStackTrace();
throw new IOException("解压失败：" + ex.toString());
} finally {
if (zipFile != null) {
try {
zipFile.close();
} catch (IOException ex) {
}
}
}
}
}
遍历文件夹和创建文件夹
/**
* 文件夹遍历
*
* @author miaowei
*/
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());
}*/
list.add(file[i]);
}
/*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;
}
public static ArrayList<File> arrayListFiles(String strPath) {
ArrayList<File> filelist = new ArrayList<File>();
File dir = new File(strPath);
File[] files = dir.listFiles();
for (int i = 0; i < files.length; i++) {
filelist.add(files[i].getAbsoluteFile());
}
return filelist;
}
//-----4.0读取文件的报 open failed: ENOENT (No such file or directory)
/**
* 1\可先创建文件的路径
*
* @param filePath
*/
public static void makeRootDirectory(String filePath) {
File file = null;
try {
file = new File(filePath);
if (!file.exists()) {
file.mkdir();
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 2\然后在创建文件名就不会在报该错误
*
* @param filePath
* @param fileName
* @return
*/
public static File getFilePath(String filePath, String fileName) {
File file = null;
makeRootDirectory(filePath);
try {
file = new File(filePath + fileName);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return file;
}
}
实际用法
public String ROOT_LOG = Environment.getExternalStorageDirectory() + File.separator + "MC_CONFIG_LOG/";//多文件遍历目录
public String ROOT_PATHSTRING = Environment.getExternalStorageDirectory() + File.separator + "Logdb_Zip/";//存放压缩完成目录
public String ROOT_DIR = Environment.getExternalStorageDirectory() + File.separator + "es_cabin";//单个压缩的目录
public String DB_FILE = new File(ROOT_DIR, "es_cabin2.db").getPath();//单个要压缩的指定文件
try {
LinkedList<File> files = DirTraversal.listLinkedFiles(ROOT_LOG);//需要遍历的文件夹路径
File filezip = DirTraversal.getFilePath(ROOT_PATHSTRING, "log.zip");//压缩到指定位置的目录和名称
ZipUtils.zipFiles(files, filezip);//ZipUtils.zipFiles压缩多个文件方法
ZipUtils.zip(DB_FILE, ROOT_PATHSTRING + "es_cabin2.zip");//压缩单个文件
} catch (Exception e) {
e.printStackTrace();
}
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