package com.hexiang.utils;
import java.io.*;
import java.util.*;
import java.util.zip.Adler32;
import java.util.zip.CheckedInputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;
public class ZipUtils {
private static final int BUFFER = 8192;
private static void log(String msg){
System.out.println (msg);
}
private static String getFileName(String filePath){
int index = filePath.indexOf(".");
return filePath.substring(0, index);
}
@SuppressWarnings("unused")
private static String getRootPath(String filePath){
int index = filePath.indexOf(".");
return filePath.substring(0, index);
}
public static void zip(String sourceFilePath){
File fileDir = new File(sourceFilePath);
if(fileDir.exists()){
log(fileDir.getPath()+" Starting Zip ...");
long startTime = System.currentTimeMillis();
doZip(fileDir);
long endTime = System.currentTimeMillis();
long costTime = endTime - startTime;
log("Zip Success!");
log("use time -- "+costTime+" millsec!");
}else{
log("can't find the File!");
}
}
public static void unZip(String zipFilePath){
File fileDir = new File(zipFilePath);
if(fileDir.exists()){
log(fileDir.getPath()+" Starting UnZip ...");
long startTime = System.currentTimeMillis();
doUnZip(fileDir);
long endTime = System.currentTimeMillis();
long costTime = endTime - startTime;
log("UnZip Success!");
log("use time -- "+costTime+" millsec!");
}else{
log("can't find the File!");
}
}
public static void doZip(File file){
List<File> fileList = new ArrayList<File>();
List<File> allFiles = (ArrayList<File>)searchFiles(file.getPath(), fileList);
Object[] fileArray = allFiles.toArray();
BufferedInputStream in = null;
FileInputStream fis = null;
ZipOutputStream zos = null;
FileOutputStream fos = null;
try {
fos = new FileOutputStream(file.getParent()+File.separator+file.getName()+".zip");
zos = new ZipOutputStream(new BufferedOutputStream(fos, BUFFER));
zos.setLevel(9);
byte[] data = new byte [BUFFER];
for (int i = 0; i<fileArray.length; i++){
// 设置压缩文件入口entry,为被读取的文件创建压缩条目
File tempFile = new File(fileArray[i].toString());
String rootStr = file.getPath();
String entryStr = null;
// entry以相对路径的形式设置。以文件夹C:\temp例如temp\test.doc或者test.xls 如果设置不当，会出现拒绝访问等错误
// 分别处理单个文件/目录的entry
if(rootStr.equals(tempFile.getPath())){
entryStr = tempFile.getName();
}else{
entryStr = tempFile.getPath().substring((rootStr+File.separator).length());
}
log(entryStr);
ZipEntry entry = new ZipEntry(entryStr);
zos.putNextEntry(entry);
fis = new FileInputStream(tempFile);
in = new BufferedInputStream(fis, BUFFER);
int count;
while((count = in.read(data, 0, BUFFER)) != -1){
zos.write(data, 0, count);
}
}
}
catch (Exception ex) {
ex.printStackTrace();
}finally{
try{
if(in != null){
in.close();
}
if(zos != null){
zos.close();
}
}catch (Exception e) {
e.printStackTrace();
}
}
}
public static void doUnZip(File file){
try{
final int BUFFER = 2048;
BufferedOutputStream dest = null;
FileInputStream fis = new FileInputStream(file);
CheckedInputStream checksum = new CheckedInputStream(fis,new Adler32());
ZipInputStream zis = new ZipInputStream(new BufferedInputStream(checksum));
ZipEntry entry;
while((entry = zis.getNextEntry()) != null){
log("Extracting: "+entry);
int count;
byte[] data = new byte[BUFFER];
log("unzip to "+getFileName(file.getPath()));
FileOutputStream fos = new FileOutputStream(getFileName(file.getPath())+File.separator+newDir(file, entry.getName()));
dest = new BufferedOutputStream(fos, BUFFER);
while((count = zis.read(data, 0, BUFFER)) != -1){
dest.write(data, 0, count);
}
dest.flush();
dest.close();
}
zis.close();
System.out.println("Checksum: "+checksum.getChecksum().getValue());
}catch(Exception e){
e.printStackTrace();
}
}
public static List<File> searchFiles(String sourceFilePath, List<File> fileList){
File fileDir = new File(sourceFilePath);
if(fileDir.isDirectory()){
File[] subfiles = fileDir.listFiles();
for(int i = 0; i<subfiles.length; i++){
searchFiles(subfiles[i].getPath(),fileList);
}
}else{
fileList.add(fileDir);
}
return fileList;
}
@SuppressWarnings("static-access")
private static String newDir(File file,String entryName) {
String rootDir=getFileName(file.getPath());
log("root："+rootDir);
int index = entryName.lastIndexOf("\\");
String dirStr=new File(rootDir).getParent();
log(dirStr);
if (index != -1) {
String path=entryName.substring(0, index);
log("new Dir："+rootDir+file.separator+path);
new File(rootDir+file.separator+path).mkdirs();
log("entry:"+entryName.substring(0, index));
}
else{
new File(rootDir).mkdirs();
log("entry:"+entryName);
}
return entryName;
}
}
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