android 进行多文件压缩处理格式zip

下面的小代码为周未时间所写。主要利用了ant.jar对文件进行压缩处理。以下为全部代码，界面是随便所画。如有什么问题还希望各位指出。
xml文件代码 ：

[xhtml]
view plaincopy

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content" android:id="@+id/backup"
android:text="backup" />
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content" android:id="@+id/recover"
android:text="recover"/>
</LinearLayout>

android 代码：

[java]
view plaincopy

package com.android.file;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.zip.ZipException;

import com.android.file.zip.ZipControl;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class FileAndroidActivity extends Activity implements OnClickListener {
private final static String TAG = "FileAndroidActivity";
private String[] fileSrcStrings;//指定压缩源，可以是目录或文件的数组
private String decompressDirString="";//解压路径
private String archiveString="";//压缩包路径
private String commentString="Androi Java Zip 测试.";//压缩包注释
private ZipControl mZipControl;
private Button mBackupButton;
private Button mRecoverButton;
private String srcString;//第一个文件的路径
private String srcTwoString;//第二个文件的路径
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mBackupButton = (Button) findViewById(R.id.backup);
mRecoverButton = (Button) findViewById(R.id.recover);
mBackupButton.setOnClickListener(this);
mRecoverButton.setOnClickListener(this);
String pathString =this.getCacheDir().toString();
Log.e(TAG, "path is "+ pathString);
archiveString=pathString+"/zip";
decompressDirString = pathString+"/unzip";
File zipFile = new File(archiveString);
if(!zipFile.exists())
{
zipFile.mkdir();
Log.e(TAG, "make zipdir success");
}
else {
Log.e(TAG, "exit zipdir");
}
File unZipFile = new File(decompressDirString);
if(!unZipFile.exists())
{
unZipFile.mkdir();
Log.e(TAG, "make undir success");
}
else
{
Log.e(TAG, "exit undir");
}
String strFileOne = pathString+"/fileoneDir";
File fileOneFile = new File(strFileOne);
if(!fileOneFile.exists())
{
fileOneFile.mkdir();
Log.e(TAG, "make fileonedir success");
}
else {
Log.e(TAG, "exit fileonedir");
}
srcString = strFileOne+"/testfile01.txt";
String strFileTwo =pathString+"/filetwoDir";
File fileOneFileTwo = new File(strFileTwo);
if(!fileOneFileTwo.exists())
{
fileOneFileTwo.mkdir();
Log.e(TAG, "make filetwoDir success");
}
else {
Log.e(TAG, "exit filetwoDir");
}
srcTwoString = strFileTwo+"/testfile02.txt";
fileSrcStrings= new String[]{srcString,srcTwoString};
mZipControl = new ZipControl();
}
@Override
public void onClick(View v)
{
int id = v.getId();
switch (id)
{
case R.id.backup:
Log.e(TAG, "start backup");
try
{
mZipControl.writeByApacheZipOutputStream(fileSrcStrings, archiveString+"/test.zip", commentString);
}
catch (FileNotFoundException e)
{
Log.e(TAG, e.toString());
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (IOException e)
{
Log.e(TAG, e.toString());
// TODO Auto-generated catch block
e.printStackTrace();
}
break;
case R.id.recover:
try
{
ZipControl.readByApacheZipFile(archiveString+"/test.zip", decompressDirString);
}
catch (FileNotFoundException e)
{
Log.e(TAG, e.toString());
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (ZipException e)
{
Log.e(TAG, e.toString());
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.e(TAG, "start recover ");
break;
default:
break;
}
}
}

对文件压缩的主要代码类：

[java]
view plaincopy

package com.android.file.zip;

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.util.Enumeration;
import java.util.zip.CRC32;
import java.util.zip.CheckedInputStream;
import java.util.zip.CheckedOutputStream;
import java.util.zip.Deflater;
import java.util.zip.ZipException;
import java.util.zip.ZipInputStream;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;
import org.apache.tools.zip.ZipOutputStream;

import android.util.Log;
/**
*
* [一句话功能简述]<BR>
* [功能详细描述]
* @author zhouxin
* @version [Android MTVClient C01, 2011-3-4]
*/
public class ZipControl
{
private static boolean isCreateSrcDir = false;//是否创建源目录 在这里的话需要说明下。如果需要创建源目录的话。就在这里设为true否则为false;
private static String TAG="ZipControl";
/**
*
* [对指定路径下文件的压缩处理]<BR>
* [功能详细描述]
*
* @param src 径地址
* @param archive 指定到压缩文件夹的路径
* @param comment 描述
* @throws FileNotFoundException 文件没有找到异常
* @throws IOException IO输入异常
*/
public void writeByApacheZipOutputStream(String[] src,
String archive, String comment) throws FileNotFoundException,
IOException
{
Log.e(TAG, "writeByApacheZipOutputStream");
//----压缩文件：
FileOutputStream f = new FileOutputStream(archive);
//使用指定校验和创建输出流
CheckedOutputStream csum = new CheckedOutputStream(f, new CRC32());
ZipOutputStream zos = new ZipOutputStream(csum);
//支持中文
zos.setEncoding("GBK");
BufferedOutputStream out = new BufferedOutputStream(zos);
//设置压缩包注释
zos.setComment(comment);
//启用压缩
zos.setMethod(ZipOutputStream.DEFLATED);
//压缩级别为最强压缩，但时间要花得多一点
zos.setLevel(Deflater.BEST_COMPRESSION);
// 如果为单个文件的压缩在这里修改
for (int i = 0; i < src.length; i++)
{
Log.e(TAG, "src["+i+"] is "+src[i]);
File srcFile = new File(src[i]);
if (!srcFile.exists()
|| (srcFile.isDirectory() && srcFile.list().length == 0))
{
Log.e(TAG, "!srcFile.exists()");
throw new FileNotFoundException(
"File must exist and ZIP file must have at least one entry.");
}
String strSrcString = src[i];
//获取压缩源所在父目录
strSrcString = strSrcString.replaceAll("////", "/");
String prefixDir = null;
if (srcFile.isFile())
{
prefixDir = strSrcString.substring(0, strSrcString
.lastIndexOf("/") + 1);
}
else
{
prefixDir = (strSrcString.replaceAll("/$", "") + "/");
}
//如果不是根目录
if (prefixDir.indexOf("/") != (prefixDir.length() - 1)
&& isCreateSrcDir)
{
prefixDir = prefixDir.replaceAll("[^/]+/$", "");
}
//开始压缩
writeRecursive(zos, out, srcFile, prefixDir);
}

out.close();
// 注：校验和要在流关闭后才准备，一定要放在流被关闭后使用
Log.e(TAG, "Checksum: " + csum.getChecksum().getValue());
@SuppressWarnings("unused")
BufferedInputStream bi;
}
/**
*
* [* 使用 org.apache.tools.zip.ZipFile 解压文件，它与 java 类库中的
* java.util.zip.ZipFile 使用方式是一新的，只不过多了设置编码方式的 接口。
*
* 注，apache 没有提供 ZipInputStream 类，所以只能使用它提供的ZipFile 来读取压缩文件。]<BR>
*
* @param archive 压缩包路径
* @param decompressDir 解压路径
* @throws IOException
* @throws FileNotFoundException
* @throws ZipException
*/

@SuppressWarnings("unchecked")
public static void readByApacheZipFile(String archive, String decompressDir)
throws IOException, FileNotFoundException, ZipException
{
Log.e(TAG, "readByApacheZipFile");
BufferedInputStream bi;
ZipFile zf = new ZipFile(archive, "GBK");//支持中文
Enumeration e = zf.getEntries();
while (e.hasMoreElements())
{
ZipEntry ze2 = (ZipEntry) e.nextElement();
String entryName = ze2.getName();
String path = decompressDir + "/" + entryName;
if (ze2.isDirectory())
{
Log.e(TAG, "正在创建解压目录 - " + entryName);
File decompressDirFile = new File(path);
if (!decompressDirFile.exists())
{
decompressDirFile.mkdirs();
}
}
else
{
Log.e(TAG, "正在创建解压文件 - " + entryName);
String fileDir = path.substring(0, path.lastIndexOf("/"));
File fileDirFile = new File(fileDir);
if (!fileDirFile.exists())
{
fileDirFile.mkdirs();
}
BufferedOutputStream bos = new BufferedOutputStream(
new FileOutputStream(decompressDir + "/" + entryName));
bi = new BufferedInputStream(zf.getInputStream(ze2));
byte[] readContent = new byte[1024];
int readCount = bi.read(readContent);
while (readCount != -1)
{
bos.write(readContent, 0, readCount);
readCount = bi.read(readContent);
}
bos.close();
}
}
zf.close();
}
/**
*
* [使用 java api 中的 ZipInputStream 类解压文件，但如果压缩时采用了
* org.apache.tools.zip.ZipOutputStream时，而不是 java 类库中的
* java.util.zip.ZipOutputStream时，该方法不能使用，原因就是编码方 式不一致导致，运行时会抛如下异常：
* java.lang.IllegalArgumentException at
* java.util.zip.ZipInputStream.getUTF8String(ZipInputStream.java:290)
*
* 当然，如果压缩包使用的是java类库的java.util.zip.ZipOutputStream 压缩而成是不会有问题的，但它不支持中文 ]<BR>
* [功能详细描述]
*
* @param archive 压缩包路径
* @param decompressDir 解压路径
* @throws FileNotFoundException
* @throws IOException
*/
public static void readByZipInputStream(String archive, String decompressDir)
throws FileNotFoundException, IOException
{
BufferedInputStream bi;
//----解压文件(ZIP文件的解压缩实质上就是从输入流中读取数据):
Log.e(TAG, "开始读压缩文件");
FileInputStream fi = new FileInputStream(archive);
CheckedInputStream csumi = new CheckedInputStream(fi, new CRC32());
ZipInputStream in2 = new ZipInputStream(csumi);
bi = new BufferedInputStream(in2);
java.util.zip.ZipEntry ze;//压缩文件条目
//遍历压缩包中的文件条目
while ((ze = in2.getNextEntry()) != null)
{
String entryName = ze.getName();
if (ze.isDirectory())
{
Log.e(TAG,"正在创建解压目录 - " + entryName);
File decompressDirFile = new File(decompressDir + "/"
+ entryName);
if (!decompressDirFile.exists())
{
decompressDirFile.mkdirs();
}
}
else
{
Log.e(TAG, "正在创建解压文件 - " + entryName);
BufferedOutputStream bos = new BufferedOutputStream(
new FileOutputStream(decompressDir
+ "/"
+ entryName.substring(entryName.lastIndexOf("//"),
entryName.length()
- (entryName.lastIndexOf("//") - 2))));
byte[] buffer = new byte[1024];
int readCount = bi.read(buffer);
while (readCount != -1)
{
bos.write(buffer, 0, readCount);
readCount = bi.read(buffer);
}
bos.close();
}
}
bi.close();
Log.e(TAG, "Checksum: " + csumi.getChecksum().getValue());
}

/**
*
* [递归压缩
*
* 使用 org.apache.tools.zip.ZipOutputStream 类进行压缩，它的好处就是支持中文路径， 而Java类库中的
* java.util.zip.ZipOutputStream 压缩中文文件名时压缩包会出现乱码。 使用 apache 中的这个类与 java
* 类库中的用法是一新的，只是能设置编码方式了。]<BR>
* [功能详细描述]
*
* @param zos
* @param bo
* @param srcFile
* @param prefixDir
* @throws IOException
* @throws FileNotFoundException
*/
private static void writeRecursive(ZipOutputStream zos,
BufferedOutputStream bo, File srcFile, String prefixDir)
throws IOException, FileNotFoundException
{
Log.e(TAG, "writeRecursive");
ZipEntry zipEntry;
String filePath = srcFile.getAbsolutePath().replaceAll("////", "/")
.replaceAll("//", "/");
if (srcFile.isDirectory())
{
filePath = filePath.replaceAll("/$", "") + "/";
}
String entryName = filePath.replace(prefixDir, "").replaceAll("/$", "");
if (srcFile.isDirectory())
{
if (!"".equals(entryName))
{
Log.e(TAG, "正在创建目录 - " + srcFile.getAbsolutePath()
+ " entryName=" + entryName);
//如果是目录，则需要在写目录后面加上 /
zipEntry = new ZipEntry(entryName + "/");
zos.putNextEntry(zipEntry);
}
File srcFiles[] = srcFile.listFiles();
for (int i = 0; i < srcFiles.length; i++)
{
writeRecursive(zos, bo, srcFiles[i], prefixDir);
}
}
else
{
Log.e(TAG,"正在写文件 - " + srcFile.getAbsolutePath()
+ " entryName=" + entryName );
BufferedInputStream bi = new BufferedInputStream(
new FileInputStream(srcFile));
//开始写入新的ZIP文件条目并将流定位到条目数据的开始处
zipEntry = new ZipEntry(entryName);
zos.putNextEntry(zipEntry);
byte[] buffer = new byte[1024];
int readCount = bi.read(buffer);
while (readCount != -1)
{
bo.write(buffer, 0, readCount);
readCount = bi.read(buffer);
}
//注，在使用缓冲流写压缩文件时，一个条件完后一定要刷新一把，不
//然可能有的内容就会存入到后面条目中去了
bo.flush();
//文件读完后关闭
bi.close();
}
}
}