java的 zip 工具类
原创
import java.io.;
import java.util.logging.Logger;
import java.util.zip.;
/**
Created by sunyameng on 14-3-10.
/
public class ZipUtil {
private final static Logger logger = Logger.getLogger(ZipUtil.class.getName());
private static final int BUFFER = 1024 10;
/**
将指定目录压缩到和该目录同名的zip文件，自定义压缩路径
*
@param sourceFilePath 目标文件路径
@param zipFilePath 指定zip文件路径
@return
*/
public static boolean zip(String sourceFilePath, String zipFilePath,String zipFileName) {
boolean result = false;
File source = new File(sourceFilePath);
if (!source.exists()) {
logger.info(sourceFilePath + " doesn't exist.");
return result;
}
if (!source.isDirectory()) {
logger.info(sourceFilePath + " is not a directory.");
return result;
}
File zipFile = new File(zipFilePath + File.separator + zipFileName + ".zip");
if (zipFile.exists()) {
logger.info(zipFile.getName() + " is already exist.");
return result;
} else {
if (!zipFile.getParentFile().exists()) {
if (!zipFile.getParentFile().mkdirs()) {
logger.info("cann't create file " + zipFileName);
return result;
}
}
}
logger.info("creating zip file...");
FileOutputStream dest = null;
ZipOutputStream out = null;
try {
dest = new FileOutputStream(zipFile);
CheckedOutputStream checksum = new CheckedOutputStream(dest, new Adler32());
out = new ZipOutputStream(new BufferedOutputStream(checksum));
out.setMethod(ZipOutputStream.DEFLATED);
compress(source, out, source.getName());
result = true;
} catch (FileNotFoundException e) {
e.printStackTrace();
} finally {
if (out != null) {
try {
out.closeEntry();
} catch (IOException e) {
e.printStackTrace();
}
try {
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
if (result) {
logger.info("done.");
} else {
logger.info("fail.");
}
return result;
}
private static void compress(File file, ZipOutputStream out, String mainFileName) {
int index = file.getAbsolutePath().indexOf(mainFileName);
String entryName = file.getAbsolutePath().substring(index);
//System.out.println(entryName);
if (file.isFile()) {
FileInputStream fi = null;
BufferedInputStream origin = null;
try {
fi = new FileInputStream(file);
origin = new BufferedInputStream(fi, BUFFER);
ZipEntry entry = new ZipEntry(entryName);
out.putNextEntry(entry);
byte[] data = new byte[BUFFER];
int count;
while ((count = origin.read(data, 0, BUFFER)) != -1) {
out.write(data, 0, count);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (origin != null) {
try {
origin.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
} else if (file.isDirectory()) {
try {
out.putNextEntry(new ZipEntry(entryName+File.separator));
} catch (IOException e) {
e.printStackTrace();
}
File[] fs = file.listFiles();
if (fs != null && fs.length > 0) {
for (File f : fs) {
compress(f, out, mainFileName);
}
}
}
}
/**
将zip文件解压到指定的目录，该zip文件必须是使用该类的zip方法压缩的文件
*
@param zipFile 要解压的zip文件
@param destPath 指定解压到的目录
@return
*/
public static boolean unzip(File zipFile, String destPath) {
boolean result = false;
if (!zipFile.exists()) {
logger.info(zipFile.getName() + " doesn't exist.");
return result;
}
File target = new File(destPath);
if (!target.exists()) {
if (!target.mkdirs()) {
logger.info("cann't create file " + target.getName());
return result;
}
}
String mainFileName = zipFile.getName().replace(".zip", "");
File targetFile = new File(destPath + File.separator + mainFileName);
if (targetFile.exists()) {
logger.info(targetFile.getName() + " already exist.");
return result;
}
ZipInputStream zis = null;
logger.info("start unzip file ...");
try {
FileInputStream fis = new FileInputStream(zipFile);
CheckedInputStream checksum = new CheckedInputStream(fis, new Adler32());
zis = new ZipInputStream(new BufferedInputStream(checksum));
ZipEntry entry;
while ((entry = zis.getNextEntry()) != null) {
int count;
byte data[] = new byte[BUFFER];
String entryName = entry.getName();
//logger.info(entryName);
String newEntryName = destPath + File.separator + entryName;
newEntryName=newEntryName.replaceAll("\\\\", "/");
File f = new File(newEntryName);
if(newEntryName.endsWith("/")){
if(!f.exists()){
if(!f.mkdirs()) {
throw new RuntimeException("can't create directory " + f.getName());
}
}
}else{
File temp=f.getParentFile();
if (!temp.exists()) {
if (!temp.mkdirs()) {
throw new RuntimeException("create file " + temp.getName() + " fail");
}
}
FileOutputStream fos = new FileOutputStream(f);
BufferedOutputStream dest = new BufferedOutputStream(fos, BUFFER);
while ((count = zis.read(data, 0, BUFFER)) != -1) {
dest.write(data, 0, count);
}
dest.flush();
dest.close();
}
}
result = true;
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (zis != null) {
try {
zis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
if (result) {
logger.info("done.");
} else {
logger.info("fail.");
}
return result;
}
public static void main(String[] args) throws IOException {
// String path="D:\temp\B";
// ZipUtil.zip(path,"d:/temp/c","anhuigs123");
String zipfile ="D:\temp\c\B.zip";
File zipFile = new File(zipfile);
String output="D:\temp\c";
ZipUtil.unzip(zipFile, output);
}
}
</pre> 原创声明：本文系作者授权腾讯云开发者社区发表，未经许可，不得转载。
如有侵权，请联系 cloudcommunity@tencent.com 删除。
原创声明：本文系作者授权腾讯云开发者社区发表，未经许可，不得转载。
如有侵权，请联系 cloudcommunity@tencent.com 删除。
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