文件压缩解压在电脑上经常使用到，如果是Android端也会在某些需求中用到，接下来话不多说直接上代码：
1：在页面中的操作：这些代码只是页面中如何调用，解压业务代码还是封装在工具类中
try {
String zipPath = FileUtils.GetZipPath()+"资料.zip";//待处理压缩文件路径
String outPath = FileUtils.GetOutPutPath();//解压后要保存的目录
File FILE = new File(zipPath);
Log.d(TAG,"正在解压...");
boolean ok = ZipUtils.upZipFile(FILE, outPath);
if (ok){
PreferencesUtils.showMsg("解压完成");
uploadTv.setText("解压完成");
}
} catch (IOException e) {
e.printStackTrace();
PreferencesUtils.showMsg("解压出错");
}2：下面是解压文件的工具类，给定一个待压缩文件路径和解压后保存的路径，直接按照压缩文件里的层级就解压好了
/**
* 创建人 薛天佑
* 创建时间 2019/9/9 17:47
* 文件解压缩工具类
*/
public class ZipUtils {
public static final String TAG = "FileLookLog";
public ZipUtils() {
}
/**
* 解压缩将zipFile文件解压到folderPath目录下.
* @param zipFile zip文件
* @param folderPath 解压到的地址
*/
public static boolean upZipFile(File zipFile, String folderPath) throws IOException {
boolean ok = true;
ZipFile zfile = new ZipFile(zipFile);
Enumeration zList = zfile.entries();
ZipEntry ze = null;
byte[] buf = new byte[10240];
while (zList.hasMoreElements()) {
ze = (ZipEntry) zList.nextElement();
if (ze.isDirectory()) {
Log.d(TAG, "解压目录 = " + ze.getName());
String dirstr = folderPath + ze.getName();
dirstr = new String(dirstr.getBytes("GB2312"), "GB2312");
Log.d(TAG, "解压保存地址 = " + dirstr);
File f = new File(dirstr);
f.mkdir();
continue;
}
Log.d(TAG, "解压出来的文件 = " + ze.getName());
OutputStream os = new BufferedOutputStream(new FileOutputStream(getRealFileName(folderPath, ze.getName())));
InputStream is = new BufferedInputStream(zfile.getInputStream(ze));
int readLen = 0;
while ((readLen = is.read(buf, 0, 1024)) != -1) {
os.write(buf, 0, readLen);
}
is.close();
os.close();
}
zfile.close();
return ok;
}
/**
* 给定根目录，返回一个相对路径所对应的实际文件名.
* @param baseDir 指定根目录
* @param absFileName 相对路径名，来自于ZipEntry中的name
* @return java.io.File 实际的文件
*/
public static File getRealFileName(String baseDir, String absFileName) {
String[] dirs = absFileName.split("/");
File ret = new File(baseDir);
String substr = null;
if (dirs.length > 1) {
for (int i = 0; i < dirs.length - 1; i++) {
substr = dirs[i];
try {
substr = new String(substr.getBytes("GB2312"), "GB2312");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
ret = new File(ret, substr);
}
Log.d(TAG, "给定一个目录 = " + ret);
if (!ret.exists())
ret.mkdirs();
substr = dirs[dirs.length - 1];
try {
substr = new String(substr.getBytes("GB2312"), "GB2312");
Log.d(TAG, "返回一个文件名 = " + substr);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
ret = new File(ret, substr);
Log.d(TAG, "完成的文件路径 = " + ret);
return ret;
}
return ret;
}
public static void UnZipFolder(String zipFileString, String outPathString, String szName) throws Exception {
ZipInputStream inZip = new ZipInputStream(new FileInputStream(zipFileString));
ZipEntry zipEntry;
while ((zipEntry = inZip.getNextEntry()) != null) {
//szName = zipEntry.getName();
if (zipEntry.isDirectory()) {
//获取部件的文件夹名
szName = szName.substring(0, szName.length());
File folder = new File(outPathString + File.separator + szName);
folder.mkdirs();
} else {
Log.e(TAG, outPathString + File.separator + szName);
File file = new File(outPathString + File.separator + szName);
if (!file.exists()) {
Log.e(TAG, "创建文件夹:" + outPathString + File.separator + szName);
file.getParentFile().mkdirs();
file.createNewFile();
}
// 获取文件的输出流
FileOutputStream out = new FileOutputStream(file);
int len;
byte[] buffer = new byte[1024];
// 读取（字节）字节到缓冲区
while ((len = inZip.read(buffer)) != -1) {
// 从缓冲区（0）位置写入（字节）字节
out.write(buffer, 0, len);
out.flush();
}
out.close();
}
}
inZip.close();
}
/**
* 压缩文件和文件夹
*
* @param srcFileString 要压缩的文件或文件夹
* @param zipFileString 解压完成的Zip路径
* @throws Exception
*/
public static void ZipFolder(String srcFileString, String zipFileString) throws Exception {
//创建ZIP
ZipOutputStream outZip = new ZipOutputStream(new FileOutputStream(zipFileString));
//创建文件
File file = new File(srcFileString);
//压缩
// LogUtils.LOGE("---->"+file.getParent()+"==="+file.getAbsolutePath());
ZipFiles(file.getParent()+ File.separator, file.getName(), outZip);
//完成和关闭
outZip.finish();
outZip.close();
}
/**
* 压缩文件
*
* @param folderString
* @param fileString
* @param zipOutputSteam
* @throws Exception
*/
private static void ZipFiles(String folderString, String fileString, ZipOutputStream zipOutputSteam) throws Exception {
// LogUtils.LOGE("folderString:" + folderString + "\n" +
// "fileString:" + fileString + "\n==========================");
if (zipOutputSteam == null)
return;
File file = new File(folderString + fileString);
if (file.isFile()) {
ZipEntry zipEntry = new ZipEntry(fileString);
FileInputStream inputStream = new 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
String fileList[] = file.list();
//没有子文件和压缩
if (fileList.length <= 0) {
ZipEntry zipEntry = new ZipEntry(fileString + File.separator);
zipOutputSteam.putNextEntry(zipEntry);
zipOutputSteam.closeEntry();
}
//子文件和递归
for (int i = 0; i < fileList.length; i++) {
ZipFiles(folderString+fileString+"/", fileList[i], zipOutputSteam);
}
}
}
/**
* 返回zip的文件输入流
*
* @param zipFileString zip的名称
* @param fileString ZIP的文件名
* @return InputStream
* @throws Exception
*/
public static InputStream UpZip(String zipFileString, String fileString) throws Exception {
ZipFile zipFile = new ZipFile(zipFileString);
ZipEntry zipEntry = zipFile.getEntry(fileString);
return zipFile.getInputStream(zipEntry);
}
/**
* 返回ZIP中的文件列表（文件和文件夹）
*
* @param zipFileString ZIP的名称
* @param bContainFolder 是否包含文件夹
* @param bContainFile 是否包含文件
* @return
* @throws Exception
*/
public static List<File> GetFileList(String zipFileString, boolean bContainFolder, boolean bContainFile) throws Exception {
List<File> fileList = new ArrayList<File>();
ZipInputStream inZip = new ZipInputStream(new FileInputStream(zipFileString));
ZipEntry zipEntry;
String szName = "";
while ((zipEntry = inZip.getNextEntry()) != null) {
szName = zipEntry.getName();
if (zipEntry.isDirectory()) {
// 获取部件的文件夹名
szName = szName.substring(0, szName.length() - 1);
File folder = new File(szName);
if (bContainFolder) {
fileList.add(folder);
}
} else {
File file = new File(szName);
if (bContainFile) {
fileList.add(file);
}
}
}
inZip.close();
return fileList;
}3：解压就这么简单，如果有一些地方写的不好欢迎评论指点。
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