java压缩文件夹或资料

java压缩文件夹或文件

package com.proxy;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class ZipUtil {
?public enum zipEnum {
??byteLength(1024 * 2), srcPath("d:/快盘-学习"), objPath("d:/"), zipName(
????"ac.zip");
??zipEnum(int intData) {
???this.intData = intData;
??}

??zipEnum(String strData) {
???this.strData = strData;
??}

??public int getIntData() {
???return intData;
??}

??public String getStrData() {
???return strData;
??}

??private int intData = -1;
??private String strData = null;
?}

?/**
? * @param args
? */
?public static void main(String[] args) {
??zipDir(zipEnum.srcPath.getStrData(), zipEnum.objPath.getStrData(),
????zipEnum.zipName.getStrData());
?}
?/**
? * @判断输入的地址是文件名还是文件夹名
? * @param srcPath:被压缩的文件或文件夹（源文件）
? * @param objPath:压缩至某个路径
? * @param zipName:压缩文件名
? */
?public static void zipDir(String srcPath, String objPath, String zipName) {
??if (srcPath == null) {
???return;
??}
??File fileIn = new File(srcPath);
??File fileOut = new File(objPath, zipName);
??ZipOutputStream zipOut = null;
??try {
???zipOut = new ZipOutputStream(new FileOutputStream(fileOut));
???//判断源文件是否是文件夹
???if (!fileIn.isAbsolute()) {
????//如果是文件
????if (fileIn.isFile()) {
?????zipFile("", fileIn, zipOut);
????} else {
?????System.out.println("输入的源文件地址错误");
????}
???} else {
????//如果是文件夹
????zipDirFile("", fileIn, zipOut);
???}
??} catch (FileNotFoundException e) {
???System.out.println("目标文件错误");
???e.printStackTrace();
??} finally {
???if (zipOut != null) {
????try {
?????zipOut.close();
????} catch (IOException e) {
?????e.printStackTrace();
????}
???}
??}

?}
?/**
? * @压缩文件
? * @param relName:压缩包内的路径位置
? * @param fileIn:被压缩的文件
? * @param zipOut:压缩输出
? */
?private static void zipFile(String relName, File fileIn,
???ZipOutputStream zipOut) {
??//relName + fileIn.getName()类似于java文件夹下面java.txt文件这样的路径
??ZipEntry zipEntry = new ZipEntry(relName + fileIn.getName());
??FileInputStream fileSteam = null;
??byte[] buf = new byte[zipEnum.byteLength.getIntData()];
??int num = 0;
??try {
???fileSteam = new FileInputStream(fileIn);
???zipOut.putNextEntry(zipEntry);
???while ((num = fileSteam.read(buf)) != -1) {
????zipOut.write(buf, 0, num);
???}
??} catch (IOException e) {
???e.printStackTrace();
??} finally {
???if (fileSteam != null) {
????try {
?????fileSteam.close();
????} catch (IOException e) {
?????e.printStackTrace();
????}
???}
???if (zipEntry != null) {
????zipEntry.clone();
???}
??}
?}
?/**
? * @遍历文件夹中的文件或文件夹
? * @param relName:压缩包内的路径位置
? * @param fileIn:被压缩的文件
? * @param zipOut:压缩输出
? */
?private static void zipDirFile(String relName, File fileIn,
???ZipOutputStream zipOut) {
??//如果是文件
??if (fileIn.isFile()) {
???zipFile(relName, fileIn, zipOut);
??} else {
???String relNames = relName + fileIn.getName() + File.separator;
???File[] files = fileIn.listFiles();
???for (File fi : files) {
????zipDirFile(relNames, fi, zipOut);
???}
???files.clone();
??}
?}
}