之前記錄過一篇java打包zip壓縮包案例
這里補(bǔ)一下針對帶文件夾的文件壓縮和解壓縮的方法。
新建ZipTest類:
package com.ly.mp.project.test;
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.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;
import com.alibaba.fastjson.JSONObject;
import com.ly.mp.project.utils.IOCloseUtil;
public class ZipTest {
/**
* 解壓到指定目錄
*/
public static List<String> unZipFiles(String zipPath,String descDir)throws IOException
{
return unZipFiles(new File(zipPath), descDir);
}
/**
* 解壓文件到指定目錄
*/
@SuppressWarnings("rawtypes")
public static List<String> unZipFiles(File zipFile,String descDir)throws IOException
{
List<String> pathList = new ArrayList<>();
File pathFile = new File(descDir);
if(!pathFile.exists())
{
pathFile.mkdirs();
}
//解決zip文件中有中文目錄或者中文文件
try (ZipFile zip = new ZipFile(zipFile, Charset.forName("GBK"))) {
for(Enumeration entries = zip.entries(); entries.hasMoreElements();){
ZipEntry entry = (ZipEntry)entries.nextElement();
String zipEntryName = entry.getName();
InputStream in = zip.getInputStream(entry);
String outPath = (descDir+zipEntryName).replaceAll("\\*", "/");;
//判斷路徑是否存在,不存在則創(chuàng)建文件路徑
File file = new File(outPath.substring(0, outPath.lastIndexOf('/')));
if(!file.exists())
{
file.mkdirs();
}
//判斷文件全路徑是否為文件夾,如果是上面已經(jīng)上傳,不需要解壓
if(new File(outPath).isDirectory())
{
continue;
}
//輸出文件路徑信息
System.out.println(outPath);
pathList.add(outPath);
OutputStream out = new FileOutputStream(outPath);
byte[] buf1 = new byte[1024];
int len;
while((len=in.read(buf1))>0)
{
out.write(buf1,0,len);
}
in.close();
out.close();
}
}
return pathList;
}
public static void folderToZip (String sourceDirPath, String zipFilePath, String zipFileName) throws IOException{
File sourceFile = new File(sourceDirPath);
if (!sourceFile.exists()) {
throw new IOException("待壓縮的文件目錄:" + sourceDirPath + " 不存在.");
}
createDirs(zipFilePath);
File zipFile = new File(zipFilePath + zipFileName);
if (zipFile.exists() && !zipFile.delete()) {
throw new IOException("刪除已存在的文件:" + zipFilePath + zipFileName + " 異常.");
}
File[] sourceFiles = sourceFile.listFiles();
if (sourceFiles == null || sourceFiles.length < 1) {
throw new IOException("待壓縮的文件目錄:" + sourceDirPath + "為空文件夾.");
}
ZipOutputStream out = null;
BufferedOutputStream bos = null;
try {
//創(chuàng)建zip輸出流
out = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(zipFile)));
//調(diào)用壓縮函數(shù)
for(File file : sourceFiles) {
compress(out, file, file.getName());
}
out.flush();
} catch (Exception e) {
e.printStackTrace();
}finally {
IOCloseUtil.close(bos, out);
}
}
/**
* 文件壓縮
* @param out
* @param bos
* @param sourceFile
* @param base
*/
public static void compress(ZipOutputStream out, File sourceFile, String base){
FileInputStream fos = null;
try {
//如果路徑為目錄(文件夾)
if (sourceFile.isDirectory()) {
//取出文件夾中的文件(或子文件夾)
File[] flist = sourceFile.listFiles();
if (flist.length == 0) {//如果文件夾為空,則只需在目的地zip文件中寫入一個目錄進(jìn)入點(diǎn)
out.putNextEntry(new ZipEntry(base + "/"));
} else {//如果文件夾不為空,則遞歸調(diào)用compress,文件夾中的每一個文件(或文件夾)進(jìn)行壓縮
for (int i = 0; i < flist.length; i++) {
compress(out, flist[i], base + "/" + flist[i].getName());
}
}
} else {//如果不是目錄(文件夾),即為文件,將文件寫入zip文件中
out.putNextEntry(new ZipEntry(base));
fos = new FileInputStream(sourceFile);
int tag;
//將源文件寫入到zip文件中
while ((tag = fos.read()) != -1) {
out.write(tag);
}
fos.close();
}
} catch (Exception e) {
e.printStackTrace();
}finally {
IOCloseUtil.close(fos);
}
}
/**
* 創(chuàng)建多層級文件夾
*
* @param path
* @return
*/
private static boolean createDirs(String path) {
File fileDir = new File(path);
if (!fileDir.exists()) {
return fileDir.mkdirs();
}
return true;
}
public static void main(String[] args) throws IOException {
String targetFilePath = "d://tmp/zipTest/zipTest.zip";
String destFilePath = "d://tmp/zipTest/target/";
//解壓縮
List<String> filePaths = unZipFiles(targetFilePath, destFilePath);
System.out.println(JSONObject.toJSONString(filePaths));
String zipFilePath = "d://tmp/zipTest/";
String zipFileName = "zipTest1.zip";
folderToZip(destFilePath, zipFilePath, zipFileName);
}
}
IOCloseUtil:
package com.ly.mp.project.utils;
import java.io.Closeable;
import java.io.IOException;
public class IOCloseUtil {
/**
* IO流關(guān)閉工具類
*/
public static void close(Closeable... io) {
for (Closeable temp : io) {
try {
if (null != temp)
temp.close();
} catch (IOException e) {
System.out.println("" + e.getMessage());
}
}
}
public static <T extends Closeable> void closeAll(T... io) {
for (Closeable temp : io) {
try {
if (null != temp)
temp.close();
} catch (IOException e) {
System.out.println("" + e.getMessage());
}
}
}
}
我們在D:\tmp\zipTest目錄下面放置了一個zipTest.zip的測試文件,里面包含一個test文件夾和test.txt文件,test文件夾里面也包含一個test.txt文件。
我們新建了一個D:\tmp\zipTest\target\文件夾,期望結(jié)果是程序會把zipTest.zip解壓到這個target文件夾里,然后會target文件夾里的所有文件和文件夾進(jìn)行zip打包生成D:\tmp\zipTest\zipTest1.zip
運(yùn)行上面的ZipTest里的main方法,可以得到以下打印結(jié)果:
d://tmp/zipTest/target/test/test.txt
d://tmp/zipTest/target/test.txt
["d://tmp/zipTest/target/test/test.txt","d://tmp/zipTest/target/test.txt"]
實測可以解壓帶文件夾的zip文件,目錄結(jié)構(gòu)也不會有影響,重新打包后的zipTest1.zip也正常。