java常用组件之解压包工具 ZipUtils
/***
*/
package cn.ccb.jstsccf.taskmanager.util;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;
/**
* 文件压缩和解压缩帮助类
*
* @author liuning
*
*/
public class ZipUtils {
public static final int BUF = 2048;
/**
* 把某一个目录下的文件压缩成zip文件
*
* @param fileDir
* @param zipName
* @throws IOException
*/
public static void zip(String fileDir, String zipName) throws IOException {
ZipOutputStream zos = null;
try {
zos = new ZipOutputStream(new FileOutputStream(zipName));
File folder = new File(fileDir);
zip(folder, zos, "");
} catch (FileNotFoundException e) {
throw e;
} catch (IOException e) {
throw e;
} finally {
if (zos != null) {
zos.close();
}
}
}
/**
* 把某一目录下某些文件压缩成zip文件
*
* @param fileDir
* @param fileNameList
* @param zipName
* @throws IOException
*/
public static void zip(String fileDir, List fileNameList, String zipName)
throws IOException {
ZipOutputStream zos = null;
try {
zos = new ZipOutputStream(new FileOutputStream(zipName));
for (Iterator iter = fileNameList.iterator(); iter.hasNext();) {
String fileName = (String) iter.next();
File file = new File(fileDir + "/" + fileName);
zip(file, zos, "");
}
} catch (FileNotFoundException e) {
throw e;
} catch (IOException e) {
throw e;
} finally {
if (zos != null) {
zos.close();
}
}
}
/**
* 把某些文件压缩成zip文件
*
* @param filePathList
* @param zipName
* @throws IOException
*/
public static void zip(List filePathList, String zipName)
throws IOException {
ZipOutputStream zos = null;
try {
zos = new ZipOutputStream(new FileOutputStream(zipName));
for (Iterator iter = filePathList.iterator(); iter.hasNext();) {
String filePath = (String) iter.next();
File file = new File(filePath);
zip(file, zos, "");
}
} catch (FileNotFoundException e) {
throw e;
} catch (IOException e) {
throw e;
} finally {
if (zos != null) {
zos.close();
}
}
}
/**
* 把某一文件添加到压缩zip包中
*
* @param file
* @param zos
* @param dir
* @throws IOException
*/
private static void zip(File file, ZipOutputStream zos, String dir)
throws IOException {
dir = dir + (dir.length() == 0 ? "" : "/") + file.getName();
// 如果是目录
if (file.isDirectory()) {
zos.putNextEntry(new ZipEntry(dir + "/"));
File[] listFiles = file.listFiles();
for (int i = 0; i < listFiles.length; i++) {
zip(listFiles, zos, dir);
}
} else {
FileInputStream fis = null;
try {
zos.putNextEntry(new ZipEntry(dir));
fis = new FileInputStream(file);
byte[] buf = new byte;
int len = -1;
while ((len = fis.read(buf)) > 0) {
zos.write(buf, 0, len);
}
} catch (FileNotFoundException e) {
throw e;
} catch (IOException e) {
throw e;
} finally {
if (fis != null) {
fis.close();
}
}
}
}
/**
* 从一个zip压缩文件压缩到另外一个压缩文件
*
* @param file
* @param descZip
* @throws IOException
*/
public static void zipToZip(InputStream is, String descZip)
throws IOException {
ZipInputStream zis = null;
ZipOutputStream zos = null;
try {
zis = new ZipInputStream(is);
zos = new ZipOutputStream(new FileOutputStream(descZip));
ZipEntry entry = zis.getNextEntry();
while (entry != null) {
zos.putNextEntry(entry);
byte[] buf = new byte;
int len = -1;
while ((len = zis.read(buf)) > 0) {
zos.write(buf, 0, len);
}
entry = zis.getNextEntry();
}
} catch (FileNotFoundException e) {
throw e;
} catch (IOException e) {
throw e;
} finally {
if (zis != null) {
try {
zis.close();
} catch (IOException e) {
throw e;
}
}
if (zos != null) {
try {
zos.close();
} catch (IOException e) {
throw e;
}
}
}
}
/**
* zip文件解压
*
* @param uploadFile
* @param unZipdir
* @throws IOException
*/
public static List unZip(InputStream is, String unZipdir)
throws IOException {
ZipInputStream zis = null;
List fileNames = new ArrayList();
try {
zis = new ZipInputStream(is);
ZipEntry entry = zis.getNextEntry();
File unZipDir = new File(unZipdir);
if (!unZipDir.exists()) {
unZipDir.mkdir();
}
while (entry != null) {
// modify by caoyanbao 2010-05-31 给上传的文件加上时间前缀
String fileName = fileDateFormat() + "_" + entry.getName();
fileNames.add(fileName);
String childFile = unZipdir + "/" + fileName;
File file = new File(childFile);
if (entry.isDirectory()) {
file.mkdir();
} else {
FileOutputStream fos = null;
try {
fos = new FileOutputStream(file);
byte[] buf = new byte;
int len = -1;
while ((len = zis.read(buf)) > 0) {
fos.write(buf, 0, len);
}
} catch (FileNotFoundException e) {
fileNames = null;
throw e;
} catch (IOException e) {
fileNames = null;
throw e;
} finally {
if (fos != null) {
try {
fos.close();
} catch (IOException e) {
fileNames = null;
throw e;
}
}
}
}
entry = zis.getNextEntry();
}
return fileNames;
} catch (FileNotFoundException e) {
fileNames = null;
throw e;
} catch (IOException e) {
fileNames = null;
throw e;
} finally {
if (zis != null) {
try {
zis.close();
} catch (IOException e) {
fileNames = null;
throw e;
}
}
}
}
/**
* 把zip文件写入输出流
*
* @param errorZipName
* @param response
* @throws IOException
* @throws FileNotFoundException
*/
public static void readToStream(String errorZipName, OutputStream ops)
throws IOException {
DataOutputStream dos = null;
DataInputStream dis = null;
try {
dos = new DataOutputStream(ops);
dis = new DataInputStream(new FileInputStream(errorZipName));
int count = -1;
byte[] data = new byte;
while ((count = dis.read(data)) != -1) {
dos.write(data, 0, count);
}
} catch (FileNotFoundException e) {
throw e;
} catch (IOException e) {
throw e;
} finally {
if (dis != null) {
dis.close();
}
}
}
/**
* 写入上传的文件
*
* @param file
* @param filePath
* @throws IOException
*/
public static void writeFile(InputStream is, String filePath)
throws IOException {
DataOutputStream writer = null;
try {
DataInputStream reader = new DataInputStream(is);
// 将文件写入目录
writer = new DataOutputStream(new FileOutputStream(filePath));
byte[] data = new byte;
int len = -1;
while ((len = reader.read(data)) != -1) {
writer.write(data, 0, len);
}
} catch (FileNotFoundException e) {
throw e;
} catch (IOException e) {
throw e;
} finally {
if (writer != null) {
writer.flush();
writer.close();
}
}
}
/**
* 判断文件是否为ZIP文件
*
* @param file
* @return
*/
public static boolean isZipFile(String fileName) {
String name = fileName.substring(fileName.lastIndexOf(".") + 1);
if (name.equalsIgnoreCase("zip")) {
return true;
}
return false;
}
/**
* 判断文件是否为excel文件
*
* @param file
* @return
*/
public static boolean isExcelFile(String fileName) {
String name = fileName.substring(fileName.lastIndexOf(".") + 1);
if (name.equalsIgnoreCase("xls")) {
return true;
}
return false;
}
/**
* 判断文件是否为Rar文件
*
* @param file
* @return
*/
public static boolean isRarFile(String fileName) {
String name = fileName.substring(fileName.lastIndexOf(".") + 1);
if (name.equalsIgnoreCase("rar")) {
return true;
}
return false;
}
/**
* 格式化的时分秒时间
*
* @return
*/
public static String fileDateFormat() {
Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("HHmmss");
return sdf.format(date);
}
public static void main(String[] args) throws IOException {
zip("", new ArrayList(), "c:/sss.zip");
}
}
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