使用JAVA自带的zipInputStream进行解压缩文件包的操作

package com.ffcs.icity.common.util;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

import org.apache.commons.io.FilenameUtils;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.RandomStringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
* 提供的针对文件的加压解压的操作工具类
* @author linwei
*
*/
public class ZipUtil {

private final static Logger log = LoggerFactory.getLogger(ZipUtil.class);

/**
* 执行压缩文件的解压,并自动生成文件的操作
* @param in
* @param outputDirectory
* @return
*
*/
public static Map<String,Object> unZip(InputStream in,String outputDirectory){

if(in == null)
return null;

ZipEntry zipEntry = null;
FileOutputStream out = null;
String uniqueName,iconUrl = null;
Map<String,Object> map = new HashMap<String,Object>();
ZipInputStream zipIn = new ZipInputStream(in);
try{
while ((zipEntry = zipIn.getNextEntry()) != null) {
//如果是文件夹路径方式，本方法内暂时不提供操作
if (zipEntry.isDirectory()) {
//					String name = zipEntry.getName();
//					name = name.substring(0, name.length() - 1);
//					File file = new File(outputDirectory + File.separator + name);
//					file.mkdir();
}
else {
//如果是文件，则直接在对应路径下生成
uniqueName = getSavedFileName(zipEntry.getName());
File path = new File(outputDirectory + File.separator);
if(!path.exists())
path.mkdirs();

iconUrl = outputDirectory + File.separator + uniqueName;
File file = new File(iconUrl);
file.createNewFile();
out = new FileOutputStream(file);
int b = 0;
while ((b = zipIn.read()) != -1){
out.write(b);
}
out.close();
map.put(zipEntry.getName(),iconUrl);
}
}
return map;
} catch(Exception ex){
log.error("in unZip(InputStream in,String outputDirectory) has an error,e is " + ex);
return null;
}
finally{
IOUtils.closeQuietly(zipIn);
IOUtils.closeQuietly(in);
IOUtils.closeQuietly(out);
}
}

/**
* 解压压缩文件流，并根据解压层次来判断，是否只解析第一层，还是解析所有数据
* map<name,inputstream>
* @param in
* @param parseLevel
* @return
*/
public static Map<String,Object> unZip(InputStream in,int parseLevel){

if(in == null)
return null;

ZipEntry zipEntry = null;
FileOutputStream out = null;
Map<String,Object> map = new HashMap<String,Object>();
ZipInputStream zipIn = new ZipInputStream(in);
try{
while ((zipEntry = zipIn.getNextEntry()) != null) {
//如果是文件夹路径方式，本方法内暂时不提供操作
if (zipEntry.isDirectory()) {
//					String name = zipEntry.getName();
//					name = name.substring(0, name.length() - 1);
//					File file = new File(outputDirectory + File.separator + name);
//					file.mkdir();
}
else {
//如果是文件，则直接存放在Map中
String name = zipEntry.getName();
//把压缩文件内的流转化为字节数组，够外部逻辑使用(之后关闭流)
byte[] bt = IOUtils.toByteArray(zipIn);
map.put(name,bt);
}
}
return map;
} catch(Exception ex){
log.error("in unZip(InputStream in,int parseLevel) has an error,e is " + ex);
return null;
}
finally{
IOUtils.closeQuietly(zipIn);
IOUtils.closeQuietly(in);
IOUtils.closeQuietly(out);
}

}

/**
* 根据传递的文件名(带后缀)生成唯一新文件名(带后缀)
* @param origFileName
* @return
*/
private static String getSavedFileName(String origFileName) {
return DateHelper.getCurrentTimeStamp("yyyyMMddHHmmss") + "-" + RandomStringUtils.randomNumeric(5) + "." + FilenameUtils.getExtension(origFileName);
}

public static void main(String[] args) throws IOException {

//		FileInputStream in = new FileInputStream(new File("d:\\Temp\\Temp.zip"));
//		Map map = unZip(in,0);
//		System.out.println("map is " + map.size());

//		byte[] bt = (byte[])map.get("ziptest.zip");
byte[] bt = null;
InputStream in1 = new ByteArrayInputStream(bt);
//		unZip(in1,"d://test");
System.err.println("over.");
}

}