利用ant.jar进行解压缩
package com.zoucq;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;
import org.apache.tools.zip.ZipOutputStream;
/**
?* 功能介绍：
?* 给定一个压缩包，从中找出目标文件，并进行修改
?* 要求是要遍历压缩包中所有的文件，当然就要递归解压缩子文件压缩包
?* 修改完文件之后，要把文件重新打包
?*/
public class ZIP {
?
?public static void main(String args[]){
??ZIP zip = new ZIP();
??try {
???zip.release(new File("d:/zip.zip"));
??} catch (IOException e) {
???e.printStackTrace();
??}
?}
?/**
? * 循环递归解压缩
? * @param file? 带解压缩的文件
? * @throws IOException
? * @throws DocumentException
? */
?@SuppressWarnings("unchecked")
?public? void release(File file) throws IOException{
??//只解析后缀为.rar的包
??????? if(file.getName().endsWith(".zip")){
??? ??ZipFile zipFile = new ZipFile(file);
??? ??//得到所有的ZipEntry，进行遍历
??????????? Enumeration zEnumeration=zipFile.getEntries();
??????????? ZipEntry zipEntry=null;
??????????? while(zEnumeration.hasMoreElements()){
????????????? zipEntry=(ZipEntry)zEnumeration.nextElement();
????????????? if(zipEntry.isDirectory()){
??????????? ?? //如果是压缩包的子文件是文件夹，代码生成应该的文件夹
??????????? ?? unZipDir(file,zipEntry.getName());
????????????? }else{
????????????? ?? //如果子文件是压缩包就进行解压缩
??????????? ?? release(file, zipEntry, zipFile);
????????????? }
??????????? }
??????????? zipFile.close();
??????????? //遍历解压后的文件夹，继续解压，递归
??????????? String zipFullName = file.getPath();
??????????? String zipName = zipFullName.substring(0,zipFullName.lastIndexOf("."));
??????????? File zipDirFile = new File(zipName);
??????????? File[] subFile = zipDirFile.listFiles();
??????????? for(int i = 0; i < subFile.length; i++){
??????????? ?release(subFile[i]);
??????????? }
??????????? //删除旧的压缩文件
??????????? file.delete();?
??????????? //重新压缩文件
??????????? zipDir(zipDirFile,file);
??????????? //删除解压后的文件夹
??????????? deleteFile(zipDirFile);
??????? }else if(file.isDirectory()){
??????? ?File[] subFile = file.listFiles();
??????? ?for(int i = 0; i < subFile.length; i++){
??????? ??release(subFile[i]);
??????? ?}
??????? }else{
??????? ?if(file.getName().equalsIgnoreCase("XmlStructure.xml")){
??????? ??//TODO:找到目标文件进行修改
??????? ?}
??????? }
?}
?
?/**
? *
? * @param file
? * @param zipEntry
? * @param zipFile
? * @throws IOException
? */
?public void release(File file,ZipEntry zipEntry,ZipFile zipFile) throws IOException{
? ?? byte[] buf=new byte[1024];
??????? OutputStream os=new BufferedOutputStream(new FileOutputStream(getRealFile(file.getPath(), zipEntry.getName())));
??????? InputStream is=new BufferedInputStream(zipFile.getInputStream(zipEntry));
??????? int readLen=0;
??????? while ((readLen=is.read(buf, 0, 1024))!=-1) {
??????? ?os.write(buf, 0, readLen);
??????? }
??????? is.close();
??????? os.close();
?}
?
?/**
? * 如果要解压缩的单元是一个文件夹
? * @param unZipFile
? * @param subDir
? */
?public void unZipDir(File unZipFile,String subDir){
??String dir = subDir.substring(0,subDir.lastIndexOf("/"));
??String unZipFileName = unZipFile.getPath();
??unZipFileName = unZipFileName.substring(0, unZipFileName.lastIndexOf("."));
??File file = new File(unZipFileName, dir);
??if(!file.exists()){
???file.mkdirs();
??}
?}
?
?/**
? * 如果获取的文件名是parentfile/file.txt，就需要先创建文件夹parentfile,然后解压缩出文件file.txt
? * @param baseDir 别解压缩的文件全路径? d:/file/unzipfile.epa
? * @param absFileName 可能是一个文件名 filename,也可能是一个带父文件夹的文件名 subfile/subzip
? * @return
? */
??? public File getRealFile(String baseDir, String fileName) {
??????? String[] dirs = fileName.split("/");
??????? //
??????? File ret = new File(baseDir.substring(0,baseDir.lastIndexOf(".")));
??????? if (dirs.length > 1) {
???????? for (int i = 0; i < dirs.length - 1; i++) {
???????? ?ret = new File(ret, dirs[i]);
???????? }
??????? }
??????? if (!ret.exists()) {
??????? ?ret.mkdirs();
??????? }
??????? return new File(ret, dirs[dirs.length - 1]);
??? }
???
??? /**
???? * 压缩文件夹
???? * @param sourceFile?? 被压缩的文件夹
???? * @param zipFile? 压缩后的文件，默认与被压缩文件同路径
???? * @throws IOException
???? */
??? public void zipDir(File sourceFile, File zipFile) throws IOException {??
??????? try {??
??????????? BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(zipFile));??
??????????? ZipOutputStream zos = new ZipOutputStream(bos);??
??????????? zipFile(zos,sourceFile,"");
??????????? zos.close();
??????? } catch (FileNotFoundException e) {??
?????????? throw e;
??????? } catch (IOException e) {
??????? ?throw e;
??}??
??? }??
???
??? /**
???? *
???? * @param out? 压缩文件的输出流
???? * @param f? 被压缩的文件
???? * @param base?
???? * @throws IOException
???? * @throws Exception
???? */
??? public void zipFile(ZipOutputStream out, File f, String base) throws IOException{
??????? if (f.isDirectory()) {
?????????? File[] fl = f.listFiles();
?????????? //直接压缩一个空文件夹
?????????? if(fl.length == 0 && base.length() == 0){
??????? ??? //加一个反斜线 "/"，表示新增的压缩节点是一个文件夹
??????? ??? out.putNextEntry(new ZipEntry(f.getName() + "/"));
?????????? }else{
??????? ??? //增加一个压缩节点
?????????????? out.putNextEntry(new ZipEntry(base + "/"));
?????????????? base = base.length() == 0 ? "" : base + "/";
?????????????? for (int i = 0; i < fl.length; i++) {
??????????? ??? zipFile(out, fl[i], base + fl[i].getName());
?????????????? }??????? ???
?????????? }
??????? }else {
?????????? //如果直接压缩一个文件的时候，需要用到下面的一个判断。比如待压缩的文件为->d:/zip/2ewq3.txt
?????????? base = base.length() == 0?f.getName():base;
?????????? //增加一个压缩节点
?????????? out.putNextEntry(new ZipEntry(base));
?????????? BufferedInputStream bin = new BufferedInputStream(new FileInputStream(f));
?????????? byte[] byteArray = new byte[1024];
?????????? int len = 0;
?????????? while ( (len = bin.read(byteArray)) != -1) {
??????? ??? out.write(byteArray,0,len);
?????????? }
?????????? bin.close();
?????? }
??? }
?
?/**
? * 删除文件或者文件夹
? * @param dirFile
? */
?public void deleteFile(File dirFile){
??if(dirFile.isDirectory()){
???File[] subFileList = dirFile.listFiles();
???for(int i = 0; i < subFileList.length; i++){
????deleteFile(subFileList[i]);
???}
???dirFile.delete();
??}else{
???dirFile.delete();
??}
?}
}
