zip7压缩

7-zip 解压

1、引入依赖文件

sevenzipjbinding.jar

sevenzipjbinding-Allwindows.jar

<!-- https://mvnrepository.com/artifact/net.sf.sevenzipjbinding/sevenzipjbinding -->
<dependency>
    <groupId>net.sf.sevenzipjbinding</groupId>
    <artifactId>sevenzipjbinding</artifactId>
    <version>9.20-2.00beta</version>
</dependency>
<!-- https://mvnrepository.com/artifact/net.sf.sevenzipjbinding/sevenzipjbinding-all-windows -->
<dependency>
    <groupId>net.sf.sevenzipjbinding</groupId>
    <artifactId>sevenzipjbinding-all-windows</artifactId>
    <version>9.20-2.00beta</version>
</dependency>

　2、创建解压archive

package server;

import compress.Zip7CompressCallBack;
import compress.CompressZipEntry;
import entity.Item;
import extact.Zip7ExtractCallback;
import net.sf.sevenzipjbinding.*;
import net.sf.sevenzipjbinding.impl.RandomAccessFileInStream;
import net.sf.sevenzipjbinding.impl.RandomAccessFileOutStream;
import org.apache.log4j.Logger;
import util.CompressOutItemStructure;
import static util.ZipUtils.*;
import java.io.*;

public class SevenZipServer {
    Logger logger = Logger.getLogger(SevenZipServer.class);
    /**
     * supper tar zip
     * @param filename Compressed file name and path
     * @param compressDir  Wait for compressed files or folder paths
     * @param format The format of the compressed
     */
    public boolean compressZIP7(String compressDir ,String filename,ArchiveFormat format) {
        Item[] items = CompressOutItemStructure.create(compressDir);
        boolean success = false;
        RandomAccessFile raf = null;
        IOutCreateArchive outArchive = null;
        try {
            raf = new RandomAccessFile(filename, "rw");
            outArchive = SevenZip.openOutArchive(format);
            outArchive.createArchive(new RandomAccessFileOutStream(raf),
                    items.length, new Zip7CompressCallBack(items));
            success = true;
        } catch (SevenZipException e) {
            logger.error(format.getMethodName()+"-Error occurs:");
            e.printStackTraceExtended();
        } catch (Exception e) {
            logger.error("Error occurs: " + e);
        } finally {
            if (outArchive != null) {
                try {
                    outArchive.close();
                } catch (IOException e) {
                    logger.error("Error closing archive: " + e);
                    success = false;
                }
            }
            if (raf != null) {
                try {
                    raf.close();
                } catch (IOException e) {
                    logger.error("Error closing file: " + e);
                    success = false;
                }
            }
        }
        if (success) {
            System.out.println("Compression operation succeeded");
        }
        return success;
    }
}

3、解压的回调类方法

package compress;

import entity.Item;
import net.sf.sevenzipjbinding.*;
import net.sf.sevenzipjbinding.impl.OutItemFactory;
import net.sf.sevenzipjbinding.util.ByteArrayStream;

/**
 * Created by wangshunyao on 2017/5/4.
 */
public class Zip7CompressCallBack implements IOutCreateCallback<IOutItemBase>  {

    private Item[] items;
    public Zip7CompressCallBack(){}

    public Zip7CompressCallBack(Item[] items) {
        this.items = items;
    }

    public void setOperationResult(boolean operationResultOk)
            throws SevenZipException {
        // Track each operation result here
    }

    public void setTotal(long total) throws SevenZipException {
        // Track operation progress here
    }

    public void setCompleted(long complete) throws SevenZipException {
        // Track operation progress here
    }

    public IOutItemBase getItemInformation(int index,
                                          OutItemFactory<IOutItemBase> outItemFactory) {
        IOutItemBase item = outItemFactory.createOutItem();
        String format = item.getArchiveFormat().getMethodName();

        if (items[index].getContent() == null) {
            if(format.equals("Tar")){
                ((IOutItemTar)item).setPropertyIsDir(true);
            }else if(format.equals("Zip")){
                ((IOutItemZip)item).setPropertyIsDir(true);
            }
        } else {
            item.setDataSize((long) items[index].getContent().length);
        }
        if(format.equals("Tar")){
            ((IOutItemTar)item).setPropertyPath(items[index].getPath());
        }else if(format.equals("Zip")){
            ((IOutItemZip)item).setPropertyPath(items[index].getPath());
        }
        return item;
    }

    public ISequentialInStream getStream(int i) throws SevenZipException {
        if (items[i].getContent() == null) {
            return null;
        }
        return new ByteArrayStream(items[i].getContent(), true);
    }
}

　　4、解压文件加的目录器构造：

package util;

import entity.Item;
import java.io.File;

/**
 * Created by wangshunyao on 2017/5/5.
 */
public class CompressOutItemStructure {
    static int fileNumber = 0;
    static Item[] items = null;
    static String parent = "";

    /**
     * file item format is fileName String,btye[] content
     * folder dir+"/"+fileName,byte[] content
     * @param compressDir
     * @return
     */
    public static Item[] create(String compressDir) {
        File file = new File(compressDir);
        parent = file.getParent() == null ? "":file.getParent();
        fileCounter(file);
        items = new Item[fileNumber];
        packet(file);
        return items;
    }

    public static void fileCounter(File file){
        if (!file.exists()){
            throw new RuntimeException("not found file "+file.getPath());
        }
        if (file.isFile()){
            fileNumber++;
        }else{
            for(File inFile : file.listFiles()){
                if (inFile.isFile()){
                    fileNumber++;
                }else{
                    fileCounter(inFile);
                }
            }
        }
    }
    static int tempFileIndex = 0;
    public static void packet(File file){
        if (!file.exists()){
            throw new RuntimeException("not found file "+file.getPath());
        }
        if (file.isFile()){
            items[tempFileIndex] = readFile(file);
            tempFileIndex++;
        }else{
            for(File file1 : file.listFiles()){
                if (file1.isFile()){
                    items[tempFileIndex] = readFile(file1);
                    tempFileIndex++;
                }else{
                    packet(file1);
                }
            }
        }
    }

    public static Item readFile(File file){
        String path = file.getPath();
        if (!("".equals(parent))){
            path = file.getPath().replace(parent,"");
        }
        return  new Item(path,ZipUtils.getBytes(file));
    }


}

　　5、Item如下：

package entity;

/**
 * Created by wangshunyao on 2017/5/5.
 */
public class Item {
    private String path;
    private byte[] content;

    public Item(String path, String content) {
        this(path, content.getBytes());
    }

    public Item(String path, byte[] content) {
        this.path = path;
        this.content = content;
    }

    public String getPath() {
        return path;
    }

    public void setPath(String path) {
        this.path = path;
    }

    public byte[] getContent() {
        return content;
    }

    public void setContent(byte[] content) {
        this.content = content;
    }
}

　　

github 地址：https://github.com/1182632074/SevenZIP