SKESKE - 経済統計練習帳

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.ArrayList;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipOutputStream;
 
 
public class pro {
 
public static void main(String[] args) {
        pro res=new pro();
    }
 
 
 
    pro(){
 
        compressDirectory("k3.zip"," gdata");
 
 
    }
 
 
 
    public static boolean compressDirectory( String filePath, String directory ) {
        File baseFile = new File(filePath);
        File file = new File(directory);
        ZipOutputStream outZip = null;
        try {
            outZip = new ZipOutputStream(new FileOutputStream(baseFile));
            archive(outZip, baseFile, file);
        } catch ( Exception e ) {
            return false;
        } finally {
            if ( outZip != null ) {
                try { outZip.closeEntry(); } catch (Exception e) {}
                try { outZip.flush(); } catch (Exception e) {}
                try { outZip.close(); } catch (Exception e) {}
            }
        }
        return true;
    }
 
 
    public static boolean compressFileList( String filePath, ArrayList<String> fileList ) {
 
        ZipOutputStream outZip = null;
        File baseFile = new File(filePath);
        try {
 
           outZip = new ZipOutputStream(new FileOutputStream(baseFile));
            for ( int i = 0 ; i < fileList.size() ; i++ ) {
                File file = new File((String)fileList.get(i));
                archive(outZip, baseFile, file, file.getName(), "UTF-8");
            }
        } catch ( Exception e ) {
            return false;
        } finally {
            if ( outZip != null ) {
                try { outZip.closeEntry(); } catch (Exception e) {}
                try { outZip.flush(); } catch (Exception e) {}
                try { outZip.close(); } catch (Exception e) {}
            }
        }
        return true;
    }
 
 
    private static void archive(ZipOutputStream outZip, File baseFile, File targetFile) {
        if ( targetFile.isDirectory() ) {
            File[] files = targetFile.listFiles();
            for (File f : files) {
                if ( f.isDirectory() ) {
                    archive(outZip, baseFile, f);
                } else {
                    if ( !f.getAbsoluteFile().equals(baseFile)  ) {
                        archive(outZip, baseFile, f, f.getAbsolutePath().replace(baseFile.getParent(), "").substring(1), "Shift_JIS");
                    }
                }
            }
        }
    }
 
 
    private static boolean archive(ZipOutputStream outZip, File baseFile, File targetFile, String entryName, String enc) {
        outZip.setLevel(5);
 
        try {
 
            outZip.putNextEntry(new ZipEntry(entryName));
 
            BufferedInputStream in = new BufferedInputStream(new FileInputStream(targetFile));
 
            int readSize = 0;
            byte buffer[] = new byte[1024]; // 読み込みバッファ
            while ((readSize = in.read(buffer, 0, buffer.length)) != -1) {
                outZip.write(buffer, 0, readSize);
            }
            // クローズ処理
            in.close();
            // ZIPエントリクローズ
            outZip.closeEntry();
        } catch ( Exception e ) {
            // ZIP圧縮失敗
            return false;
        }
        return true;
    }
}