Android zip文件壓縮解壓縮

fmms 12年前發布 | 56K 次閱讀 Android Android開發移動開發
package com.once;
import java.io.File;
import java.util.ArrayList;
import java.util.LinkedList;
/**

文件夾遍歷
@author once
/
public class DirTraversal {
//no recursion
 public static LinkedList<File> listLinkedFiles(String strPath) {

 LinkedList<File> list = new LinkedList<File>();
 File dir = new File(strPath);
 File file[] = dir.listFiles();
 for (int i = 0; i < file.length; i++) {
     if (file[i].isDirectory())
         list.add(file[i]);
     else
         System.out.println(file[i].getAbsolutePath());
 }
 File tmp;
 while (!list.isEmpty()) {
     tmp = (File) list.removeFirst();
     if (tmp.isDirectory()) {
         file = tmp.listFiles();
         if (file == null)
             continue;
         for (int i = 0; i < file.length; i++) {
             if (file[i].isDirectory())
                 list.add(file[i]);
             else
                 System.out.println(file[i].getAbsolutePath());
         }
     } else {
         System.out.println(tmp.getAbsolutePath());
     }
 }
 return list;

}



//recursion
public static ArrayList<File> listFiles(String strPath) {
    return refreshFileList(strPath);
}

public static ArrayList<File> refreshFileList(String strPath) {
    ArrayList<File> filelist = new ArrayList<File>();
    File dir = new File(strPath);
    File[] files = dir.listFiles();

    if (files == null)
        return null;
    for (int i = 0; i < files.length; i++) {
        if (files[i].isDirectory()) {
            refreshFileList(files[i].getAbsolutePath());
        } else {
            if(files[i].getName().toLowerCase().endsWith("zip"))
                filelist.add(files[i]);
        }
    }
    return filelist;
}

}</pre> 
  
package com.once;
import java.io.*;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;
/**

Java utils 實現的Zip工具
*
@author once
/
public class ZipUtils {
 private static final int BUFF_SIZE = 1024  1024; // 1M Byte
/**

批量壓縮文件（夾）
*
@param resFileList 要壓縮的文件（夾）列表
@param zipFile 生成的壓縮文件
@throws IOException 當壓縮過程出錯時拋出
*/
public static void zipFiles(Collection<File> resFileList, File zipFile) throws IOException {
 ZipOutputStream zipout = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(

     zipFile), BUFF_SIZE));

for (File resFile : resFileList) {

 zipFile(resFile, zipout, "");

}
 zipout.close();
}
/**

批量壓縮文件（夾）
*
@param resFileList 要壓縮的文件（夾）列表
@param zipFile 生成的壓縮文件
@param comment 壓縮文件的注釋
@throws IOException 當壓縮過程出錯時拋出
*/
public static void zipFiles(Collection<File> resFileList, File zipFile, String comment)

 throws IOException {

ZipOutputStream zipout = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(

     zipFile), BUFF_SIZE));

for (File resFile : resFileList) {

 zipFile(resFile, zipout, "");

}
 zipout.setComment(comment);
 zipout.close();
}
/**

解壓縮一個文件
*
@param zipFile 壓縮文件
@param folderPath 解壓縮的目標目錄
@throws IOException 當解壓縮過程出錯時拋出
*/
public static void upZipFile(File zipFile, String folderPath) throws ZipException, IOException {
 File desDir = new File(folderPath);
 if (!desDir.exists()) {

 desDir.mkdirs();

}
 ZipFile zf = new ZipFile(zipFile);
 for (Enumeration<?> entries = zf.entries(); entries.hasMoreElements();) {

 ZipEntry entry = ((ZipEntry)entries.nextElement());
 InputStream in = zf.getInputStream(entry);
 String str = folderPath + File.separator + entry.getName();
 str = new String(str.getBytes("8859_1"), "GB2312");
 File desFile = new File(str);
 if (!desFile.exists()) {
     File fileParentDir = desFile.getParentFile();
     if (!fileParentDir.exists()) {
         fileParentDir.mkdirs();
     }
     desFile.createNewFile();
 }
 OutputStream out = new FileOutputStream(desFile);
 byte buffer[] = new byte[BUFF_SIZE];
 int realLength;
 while ((realLength = in.read(buffer)) > 0) {
     out.write(buffer, 0, realLength);
 }
 in.close();
 out.close();

}
}
/**

解壓文件名包含傳入文字的文件
*
@param zipFile 壓縮文件
@param folderPath 目標文件夾
@param nameContains 傳入的文件匹配名
@throws ZipException 壓縮格式有誤時拋出
@throws IOException IO錯誤時拋出
*/
public static ArrayList<File> upZipSelectedFile(File zipFile, String folderPath,

 String nameContains) throws ZipException, IOException {

ArrayList<File> fileList = new ArrayList<File>();
File desDir = new File(folderPath);
 if (!desDir.exists()) {

 desDir.mkdir();

}
ZipFile zf = new ZipFile(zipFile);
 for (Enumeration<?> entries = zf.entries(); entries.hasMoreElements();) {

 ZipEntry entry = ((ZipEntry)entries.nextElement());
 if (entry.getName().contains(nameContains)) {
     InputStream in = zf.getInputStream(entry);
     String str = folderPath + File.separator + entry.getName();
     str = new String(str.getBytes("8859_1"), "GB2312");
     // str.getBytes("GB2312"),"8859_1" 輸出
     // str.getBytes("8859_1"),"GB2312" 輸入
     File desFile = new File(str);
     if (!desFile.exists()) {
         File fileParentDir = desFile.getParentFile();
         if (!fileParentDir.exists()) {
             fileParentDir.mkdirs();
         }
         desFile.createNewFile();
     }
     OutputStream out = new FileOutputStream(desFile);
     byte buffer[] = new byte[BUFF_SIZE];
     int realLength;
     while ((realLength = in.read(buffer)) > 0) {
         out.write(buffer, 0, realLength);
     }
     in.close();
     out.close();
     fileList.add(desFile);
 }

}
 return fileList;
}
/**

獲得壓縮文件內文件列表
*
@param zipFile 壓縮文件
@return 壓縮文件內文件名稱
@throws ZipException 壓縮文件格式有誤時拋出
@throws IOException 當解壓縮過程出錯時拋出
*/
public static ArrayList<String> getEntriesNames(File zipFile) throws ZipException, IOException {
 ArrayList<String> entryNames = new ArrayList<String>();
 Enumeration<?> entries = getEntriesEnumeration(zipFile);
 while (entries.hasMoreElements()) {

 ZipEntry entry = ((ZipEntry)entries.nextElement());
 entryNames.add(new String(getEntryName(entry).getBytes("GB2312"), "8859_1"));

}
 return entryNames;
}
/**

獲得壓縮文件內壓縮文件對象以取得其屬性
*
@param zipFile 壓縮文件
@return 返回一個壓縮文件列表
@throws ZipException 壓縮文件格式有誤時拋出
@throws IOException IO操作有誤時拋出
*/
public static Enumeration<?> getEntriesEnumeration(File zipFile) throws ZipException,

 IOException {

ZipFile zf = new ZipFile(zipFile);
 return zf.entries();
}
/**

取得壓縮文件對象的注釋
*
@param entry 壓縮文件對象
@return 壓縮文件對象的注釋
@throws UnsupportedEncodingException
*/
public static String getEntryComment(ZipEntry entry) throws UnsupportedEncodingException {
 return new String(entry.getComment().getBytes("GB2312"), "8859_1");
}
/**

取得壓縮文件對象的名稱
*
@param entry 壓縮文件對象
@return 壓縮文件對象的名稱
@throws UnsupportedEncodingException
*/
public static String getEntryName(ZipEntry entry) throws UnsupportedEncodingException {
 return new String(entry.getName().getBytes("GB2312"), "8859_1");
}
/**

壓縮文件
*
@param resFile 需要壓縮的文件（夾）
@param zipout 壓縮的目的文件
@param rootpath 壓縮的文件路徑
@throws FileNotFoundException 找不到文件時拋出
@throws IOException 當壓縮過程出錯時拋出
*/
private static void zipFile(File resFile, ZipOutputStream zipout, String rootpath)
 throws FileNotFoundException, IOException {

 rootpath = rootpath + (rootpath.trim().length() == 0 ? "" : File.separator)
     + resFile.getName();

 rootpath = new String(rootpath.getBytes("8859_1"), "GB2312");
 if (resFile.isDirectory()) {
 File[] fileList = resFile.listFiles();
 for (File file : fileList) {
     zipFile(file, zipout, rootpath);
 }

 } else {
 byte buffer[] = new byte[BUFF_SIZE];
 BufferedInputStream in = new BufferedInputStream(new FileInputStream(resFile),
         BUFF_SIZE);
 zipout.putNextEntry(new ZipEntry(rootpath));
 int realLength;
 while ((realLength = in.read(buffer)) != -1) {
     zipout.write(buffer, 0, realLength);
 }
 in.close();
 zipout.flush();
 zipout.closeEntry();

 }
}
}</pre>
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Android Android開發移動開發
Android zip文件壓縮解壓縮

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