java解压和压缩zip文件

<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-compress</artifactId>
<version>1.15</version>

</dependency>

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.compress.archivers.ArchiveEntry;
import org.apache.commons.compress.archivers.zip.Zip64Mode;
import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;
import org.apache.commons.compress.archivers.zip.ZipArchiveInputStream;
import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream;
public class ZipUtils {
/**
* zip压缩文件
* @param dir
* @param zippath
*/
public static void zip(String dir ,String zippath){
List<String> paths = getFiles(dir);
compressFilesZip(paths.toArray(new String[paths.size()]),zippath,dir    );
}
/**
* 递归取到当前目录所有文件
* @param dir
* @return
*/
public static List<String> getFiles(String dir){
List<String> lstFiles = null;
if(lstFiles == null){
lstFiles = new ArrayList<String>();
}
File file = new File(dir);
File [] files = file.listFiles();
for(File f : files){
if(f.isDirectory()){
lstFiles.add(f.getAbsolutePath());
lstFiles.addAll(getFiles(f.getAbsolutePath()));
}else{
String str =f.getAbsolutePath();
lstFiles.add(str);
}
}
return lstFiles;
}

/**
* 文件名处理
* @param dir
* @param path
* @return
*/
public static String getFilePathName(String dir,String path){
String p = path.replace(dir+File.separator, "");
p = p.replace("\\", "/");
return p;
}
/**
* 把文件压缩成zip格式
* @param files         需要压缩的文件
* @param zipFilePath 压缩后的zip文件路径   ,如"D:/test/aa.zip";
*/
public static void compressFilesZip(String[] files,String zipFilePath,String dir) {
if(files == null || files.length <= 0) {
return ;
}
ZipArchiveOutputStream zaos = null;
try {
File zipFile = new File(zipFilePath);
zaos = new ZipArchiveOutputStream(zipFile);
zaos.setUseZip64(Zip64Mode.AsNeeded);
//将每个文件用ZipArchiveEntry封装
//再用ZipArchiveOutputStream写到压缩文件中
for(String strfile : files) {
File file = new File(strfile);
if(file != null) {
String name = getFilePathName(dir,strfile);
ZipArchiveEntry zipArchiveEntry  = new ZipArchiveEntry(file,name);
zaos.putArchiveEntry(zipArchiveEntry);
if(file.isDirectory()){
continue;
}
InputStream is = null;
try {
is = new BufferedInputStream(new FileInputStream(file));
byte[] buffer = new byte[1024 ];
int len = -1;
while((len = is.read(buffer)) != -1) {
//把缓冲区的字节写入到ZipArchiveEntry
zaos.write(buffer, 0, len);
}
zaos.closeArchiveEntry();
}catch(Exception e) {
throw new RuntimeException(e);
}finally {
if(is != null)
is.close();
}

}
}
zaos.finish();
}catch(Exception e){
throw new RuntimeException(e);
}finally {
try {
if(zaos != null) {
zaos.close();
}
} catch (IOException e) {
throw new RuntimeException(e);
}
}

}

/**
* 把zip文件解压到指定的文件夹
* @param zipFilePath zip文件路径, 如 "D:/test/aa.zip"
* @param saveFileDir 解压后的文件存放路径, 如"D:/test/" ()
*/
public static void unzip(String zipFilePath, String saveFileDir) {
if(!saveFileDir.endsWith("\\") && !saveFileDir.endsWith("/") ){
saveFileDir += File.separator;
}
File dir = new File(saveFileDir);
if(!dir.exists()){
dir.mkdirs();
}
File file = new File(zipFilePath);
if (file.exists()) {
InputStream is = null;
ZipArchiveInputStream zais = null;
try {
is = new FileInputStream(file);
zais = new ZipArchiveInputStream(is);
ArchiveEntry archiveEntry = null;
while ((archiveEntry = zais.getNextEntry()) != null) {
// 获取文件名
String entryFileName = archiveEntry.getName();
// 构造解压出来的文件存放路径
String entryFilePath = saveFileDir + entryFileName;
OutputStream os = null;
try {
// 把解压出来的文件写到指定路径
File entryFile = new File(entryFilePath);
if(entryFileName.endsWith("/")){
entryFile.mkdirs();
}else{
os = new BufferedOutputStream(new FileOutputStream(
entryFile));
byte[] buffer = new byte[1024 ];
int len = -1;
while((len = zais.read(buffer)) != -1) {
os.write(buffer, 0, len);
}
}
} catch (IOException e) {
throw new IOException(e);
} finally {
if (os != null) {
os.flush();
os.close();
}
}

}
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
try {
if (zais != null) {
zais.close();
}
if (is != null) {
is.close();
}
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}
}
}

private void toPutJSCSS(Long template_id,Integer material_id) {
String catalog = material_id+"";
String saveFileDir = materialHtml+"/"+catalog;
String zipFilePath = templatePath+template_id+".zip";
ZipUtils.unzip(zipFilePath, saveFileDir);
}