Android zip文件压缩解压缩


Android zip文件压缩解压缩：

/**
* Android Zip压缩解压缩
* @author Ren.xia
* @version 1.0
* @updated 26-七月-2010 13:04:27
*/
public class XZip {

public XZip(){

}

/**
* 取得压缩包中的 文件列表(文件夹,文件自选)
* @param zipFileString 压缩包名字
* @param bContainFolder 是否包括 文件夹
* @param bContainFile 是否包括 文件
* @return
* @throws Exception
*/
public static java.util.List<java.io.File> GetFileList(String zipFileString, boolean bContainFolder, boolean bContainFile)throws Exception {

android.util.Log.v("XZip", "GetFileList(String)");

java.util.List<java.io.File> fileList = new java.util.ArrayList<java.io.File>();
java.util.zip.ZipInputStream inZip = new java.util.zip.ZipInputStream(new java.io.FileInputStream(zipFileString));

java.util.zip.ZipEntry zipEntry;
String szName = "";

while ((zipEntry = inZip.getNextEntry()) != null) {

szName = zipEntry.getName();

if (zipEntry.isDirectory()) {

// get the folder name of the widget
szName = szName.substring(0, szName.length() - 1);
java.io.File folder = new java.io.File(szName);
if (bContainFolder) {
fileList.add(folder);
}

} else {
java.io.File file = new java.io.File(szName);
if (bContainFile) {
fileList.add(file);
}
}
}//end of while

inZip.close();

return fileList;
}

/**
* 返回压缩包中的文件InputStream
* @param zipFileString 压缩文件的名字
* @param fileString 解压文件的名字
* @return InputStream
* @throws Exception
*/
public static java.io.InputStream UpZip(String zipFileString, String fileString)throws Exception {

android.util.Log.v("XZip", "UpZip(String, String)");
java.util.zip.ZipFile zipFile = new java.util.zip.ZipFile(zipFileString);
java.util.zip.ZipEntry zipEntry = zipFile.getEntry(fileString);

return zipFile.getInputStream(zipEntry);

}

/**
* 解压一个压缩文档 到指定位置
* @param zipFileString 压缩包的名字
* @param outPathString 指定的路径
* @throws Exception
*/
public static void UnZipFolder(String zipFileString, String outPathString)throws Exception {

android.util.Log.v("XZip", "UnZipFolder(String, String)");
java.util.zip.ZipInputStream inZip = new java.util.zip.ZipInputStream(new java.io.FileInputStream(zipFileString));

java.util.zip.ZipEntry zipEntry;
String szName = "";

while ((zipEntry = inZip.getNextEntry()) != null) {

szName = zipEntry.getName();

if (zipEntry.isDirectory()) {

// get the folder name of the widget
szName = szName.substring(0, szName.length() - 1);
java.io.File folder = new java.io.File(outPathString + java.io.File.separator + szName);
folder.mkdirs();

} else {

java.io.File file = new java.io.File(outPathString + java.io.File.separator + szName);
file.createNewFile();
// get the output stream of the file
java.io.FileOutputStream out = new java.io.FileOutputStream(file);
int len;
byte[] buffer = new byte[1024];

// read (len) bytes into buffer
while ((len = inZip.read(buffer)) != -1) {
// write (len) byte from buffer at the position 0
out.write(buffer, 0, len);
out.flush();
}
out.close();
}
}//end of while

inZip.close();

}//end of func

/**
* 压缩文件,文件夹
* @param srcFileString 要压缩的文件/文件夹名字
* @param zipFileString 指定压缩的目的和名字
* @throws Exception
*/
public static void ZipFolder(String srcFileString, String zipFileString)throws Exception {

android.util.Log.v("XZip", "ZipFolder(String, String)");

//创建Zip包
java.util.zip.ZipOutputStream outZip = new java.util.zip.ZipOutputStream(new java.io.FileOutputStream(zipFileString));

//打开要输出的文件
java.io.File file = new java.io.File(srcFileString);

//压缩
ZipFiles(file.getParent()+java.io.File.separator, file.getName(), outZip);

//完成,关闭
outZip.finish();
outZip.close();

}//end of func

/**
* 压缩文件
* @param folderString
* @param fileString
* @param zipOutputSteam
* @throws Exception
*/
private static void ZipFiles(String folderString, String fileString, java.util.zip.ZipOutputStream zipOutputSteam)throws Exception{

android.util.Log.v("XZip", "ZipFiles(String, String, ZipOutputStream)");

if(zipOutputSteam == null)
return;

java.io.File file = new java.io.File(folderString+fileString);

//判断是不是文件
if (file.isFile()) {

java.util.zip.ZipEntry zipEntry = new java.util.zip.ZipEntry(fileString);
java.io.FileInputStream inputStream = new java.io.FileInputStream(file);
zipOutputSteam.putNextEntry(zipEntry);

int len;
byte[] buffer = new byte[4096];

while((len=inputStream.read(buffer)) != -1)
{
zipOutputSteam.write(buffer, 0, len);
}

zipOutputSteam.closeEntry();
}
else {

//文件夹的方式,获取文件夹下的子文件
String fileList[] = file.list();

//如果没有子文件, 则添加进去即可
if (fileList.length <= 0) {
java.util.zip.ZipEntry zipEntry = new java.util.zip.ZipEntry(fileString+java.io.File.separator);
zipOutputSteam.putNextEntry(zipEntry);
zipOutputSteam.closeEntry();
}

//如果有子文件, 遍历子文件
for (int i = 0; i < fileList.length; i++) {

ZipFiles(folderString, fileString+java.io.File.separator+fileList[i], zipOutputSteam);
}//end of for

}//end of if

}//end of func

public void finalize() throws Throwable {

}

}

转自：http://www.linuxidc.com/Linux/2012-01/52719.htm