java解压缩zip文件时文件内中文部分乱码

[xaqk008]

RT 网上说用org.apache.tools.zip可以解决，我用后没有效果（注释掉的部分）。代码如下，求指教

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import java.util.zip.ZipEntry;
import java.util.Enumeration;
import java.util.zip.ZipInputStream;


import de.innosystec.unrar.Archive;
import de.innosystec.unrar.rarfile.FileHeader;

//import org.apache.tools.zip.ZipEntry;
//import org.apache.tools.zip.ZipFile;
//import org.apache.tools.zip.ZipOutputStream;




public class UnRarUtil
{
private static void unRar(String srcRar,String destDir) throws Exception
{
Archive a =null;
FileOutputStream fos = null;
try{
a = new Archive(new File(srcRar));
FileHeader fh = a.nextFileHeader();
while(fh != null)
{
if(!fh.isDirectory())
{
//根据不同的操作系统取得相应的destFileName,destDirNamme
String compressFileName = fh.getFileNameString().trim();
String destFileName = "";
String destDirNamme = "";
//非windows操作系统
if(File.separator.equals("/"))
{
destFileName = destDir + compressFileName.replaceAll("\\\\", "/");
destDirNamme = destFileName.substring(0, destFileName.lastIndexOf("/"));
}
else//windows系统
{
destFileName = destDir + compressFileName.replaceAll("/", "\\\\");
destDirNamme = destFileName.substring(0, destFileName.lastIndexOf("\\"));
}

File dir = new File(destDirNamme);
if(!dir.exists() || !dir.isDirectory())
{
dir.mkdirs();
}

fos = new FileOutputStream(new File(destFileName));
a.extractFile(fh, fos);
fos.close();
fos = null;
}
fh = a.nextFileHeader();
}
a.close();
a = null;
}
catch(Exception e){
throw e;
}
finally{
if(fos != null)
{
try{
fos.close();
fos = null;
}
catch(Exception e){
e.printStackTrace();
}
}
if(a != null)
{
try{
a.close();
a = null;
}
catch(Exception e){
e.printStackTrace();
}
}
}
}

public static void doCompress(String srcFile,String destDir) throws Exception
{
//保证文件夹路径最后是"\"或者"/"
char lastChar = destDir.charAt(destDir.length()-1);
if(lastChar != '\\' && lastChar != '/')
{
destDir += File.separator;
}
//根据类型进行相应的解压
String type = srcFile.substring(srcFile.lastIndexOf(".")+1);
if(type.endsWith("zip"))
{
unZip(srcFile,destDir);
}
else if(type.endsWith("rar"))
{
UnRarUtil.unRar(srcFile, destDir);
}
else
{
throw new Exception("只支持zip和rar格式的压缩包!");
}
}

public static void unZip(String unZipfileName, String mDestPath) {
if (!mDestPath.endsWith("/"))
{
mDestPath = mDestPath + "/";
}
FileOutputStream fileOut = null;
ZipInputStream zipIn = null;
ZipEntry zipEntry = null;
File file = null;
int readedBytes = 0;
byte buf[] = new byte[4096];
try {
zipIn = new ZipInputStream(new BufferedInputStream(new FileInputStream(unZipfileName)));

while ((zipEntry = zipIn.getNextEntry()) != null)
{
file = new File(mDestPath + zipEntry.getName());
if (zipEntry.isDirectory())
{
file.mkdirs();
} else
{
// 如果指定文件的目录不存在,则创建之.
File parent = file.getParentFile();
if (!parent.exists())
{
parent.mkdirs();
}
fileOut = new FileOutputStream(file);
while ((readedBytes = zipIn.read(buf)) > 0)
{
fileOut.write(buf, 0, readedBytes);
}
fileOut.close();
}
zipIn.closeEntry();
}
} catch (IOException ioe) {
ioe.printStackTrace();
}
}

// public static void unZip(String zipfile, String destDir)
// {
// byte b[] = new byte [1024];
// int length;
// ZipFile zipFile;
// try {
//
// zipFile = new ZipFile( new File(zipfile,"GBK"));
//
// Enumeration<?> enumeration = zipFile.getEntries();
// ZipEntry zipEntry = null ;
// while (enumeration.hasMoreElements())
// {
// zipEntry = (ZipEntry) enumeration.nextElement();
// File loadFile = new File(destDir + zipEntry.getName());
//
//
//
// if (zipEntry.isDirectory()) {
//
// // 这段都可以不要，因为每次都貌似从最底层开始遍历的
//
// loadFile.mkdirs();
//
// } else {
//
// if (!loadFile.getParentFile().exists())
//
// loadFile.getParentFile().mkdirs();
//
//
//
// OutputStream outputStream = new FileOutputStream(loadFile);
//
// InputStream inputStream = zipFile.getInputStream(zipEntry);
//
//
//
// while ((length = inputStream.read(b)) > 0)
//
// outputStream.write(b, 0, length);
//
//
//
// }
//
// }
//
// System. out .println( " 文件解压成功 " );
//
// } catch (IOException e) {
//
// // TODO Auto-generated catch block
//
// e.printStackTrace();
//
// }
//
//
//
// }







}

[zj304292653]

package com.*.*.server.resource.utils;

import java.io.OutputStream;
import java.io.IOException;
import java.lang.reflect.Field;
import java.util.Date;
import java.util.Vector;
import java.util.HashSet;
import java.util.zip.CRC32;
import java.util.zip.Deflater;
import java.util.zip.DeflaterOutputStream;
import java.util.zip.ZipException;

/**
 * 
 *此类从JDK中复制出来，添加了对中文文件名的支持
 * 
 * @author zengj
 * @version [版本号, 2012-2-9]
 * @see [相关类/方法]
 * @since [产品/模块版本]
 */
public class CNZipOutPutStream extends DeflaterOutputStream implements ZipConstants
{
    
    private static class XEntry
    {
        public final ZipEntry entry;
        
        public final long offset;
        
        public final int flag;
        
        public XEntry(ZipEntry entry, long offset)
        {
            this.entry = entry;
            this.offset = offset;
            this.flag = (entry.method == DEFLATED && (entry.size == -1 || entry.csize == -1 || entry.crc == -1))
            // store size, compressed size, and crc-32 in data descriptor
            // immediately following the compressed entry data
            ? 8
                // store size, compressed size, and crc-32 in LOC header
                : 0;
        }
    }
    
    private XEntry current;
    
    private Vector<XEntry> xentries = new Vector<XEntry>();
    
    private HashSet<String> names = new HashSet<String>();
    
    private CRC32 crc = new CRC32();
    
    private long written = 0;
    
    private long locoff = 0;
    
    private String comment;
    
    private int method = DEFLATED;
    
    private boolean finished;
    
    private boolean closed = false;
    
    private String fileNameEncoding = "UTF-8";
    
    private static int version(ZipEntry e)
        throws ZipException
    {
        switch (e.getMethod())
        {
            case DEFLATED:
                return 20;
            case STORED:
                return 10;
            default:
                throw new ZipException("unsupported compression method");
        }
    }
    
    /**
     * Checks to make sure that this stream has not been closed.
     */
    private void ensureOpen()
        throws IOException
    {
        if (closed)
        {
            throw new IOException("Stream closed");
        }
    }
    
    /**
     * Compression method for uncompressed (STORED) entries.
     */
    public static final int STORED = ZipEntry.STORED;
    
    /**
     * Compression method for compressed (DEFLATED) entries.
     */
    public static final int DEFLATED = ZipEntry.DEFLATED;
    
    /**
     * Creates a new ZIP output stream.
     * 
     * @param out the actual output stream
     */
    public CNZipOutPutStream(OutputStream out)
    {
        super(out, new Deflater(Deflater.DEFAULT_COMPRESSION, true));
        try
        {
            Field f = this.getClass().getDeclaredField("usesDefaultDeflater");
            f.setAccessible(true);
            f.set(this, true);
        }
        catch (NoSuchFieldException e)
        { // Ignore
        }
        catch (IllegalAccessException e)
        {// Ignore
        }
    }
    
    /**
     *此方法扩展了JDK的ZIP压缩输出流的默认构造函数，添加了一个内部文件名编码参数
     */
    public CNZipOutPutStream(OutputStream out, String fileNameEncoding)
    {
        this(out);
        if (fileNameEncoding != null)
        {
            this.fileNameEncoding = fileNameEncoding;
        }
    }
 
   

[zj304292653]

   
    /**
     * Sets the ZIP file comment.
     * 
     * @param comment the comment string
     * @exception IllegalArgumentException if the length of the specified ZIP file comment is greater than 0xFFFF bytes
     */
    public void setComment(String comment)
    {
        if (comment != null && comment.length() > 0xffff / 3 && getUTF8Length(comment) > 0xffff)
        {
            throw new IllegalArgumentException("ZIP file comment too long.");
        }
        this.comment = comment;
    }
    
    /**
     * Sets the default compression method for subsequent entries. This default will be used whenever the compression
     * method is not specified for an individual ZIP file entry, and is initially set to DEFLATED.
     * 
     * @param method the default compression method
     * @exception IllegalArgumentException if the specified compression method is invalid
     */
    public void setMethod(int method)
    {
        if (method != DEFLATED && method != STORED)
        {
            throw new IllegalArgumentException("invalid compression method");
        }
        this.method = method;
    }
    
    /**
     * Sets the compression level for subsequent entries which are DEFLATED. The default setting is DEFAULT_COMPRESSION.
     * 
     * @param level the compression level (0-9)
     * @exception IllegalArgumentException if the compression level is invalid
     */
    public void setLevel(int level)
    {
        def.setLevel(level);
    }
  

[zj304292653]

  
    /**
     * Begins writing a new ZIP file entry and positions the stream to the start of the entry data. Closes the current
     * entry if still active. The default compression method will be used if no compression method was specified for the
     * entry, and the current time will be used if the entry has no set modification time.
     * 
     * @param e the ZIP entry to be written
     * @exception ZipException if a ZIP format error has occurred
     * @exception IOException if an I/O error has occurred
     */
    public void putNextEntry(ZipEntry e)
        throws IOException
    {
        ensureOpen();
        if (current != null)
        {
            closeEntry(); // close previous entry
        }
        if (e.time == -1)
        {
            e.setTime(System.currentTimeMillis());
        }
        if (e.method == -1)
        {
            e.method = method; // use default method
        }
        switch (e.method)
        {
            case DEFLATED:
                break;
            case STORED:
                // compressed size, uncompressed size, and crc-32 must all be
                // set for entries using STORED compression method
                if (e.size == -1)
                {
                    e.size = e.csize;
                }
                else if (e.csize == -1)
                {
                    e.csize = e.size;
                }
                else if (e.size != e.csize)
                {
                    throw new ZipException("STORED entry where compressed != uncompressed size");
                }
                if (e.size == -1 || e.crc == -1)
                {
                    throw new ZipException("STORED entry missing size, compressed size, or crc-32");
                }
                break;
            default:
                throw new ZipException("unsupported compression method");
        }
        if (!names.add(e.name))
        {
            throw new ZipException("duplicate entry: " + e.name);
        }
        current = new XEntry(e, written);
        xentries.add(current);
        writeLOC(current);
    }
    
    /**
     * Closes the current ZIP entry and positions the stream for writing the next entry.
     * 
     * @exception ZipException if a ZIP format error has occurred
     * @exception IOException if an I/O error has occurred
     */
    public void closeEntry()
        throws IOException
    {
        ensureOpen();
        if (current != null)
        {
            ZipEntry e = current.entry;
            switch (e.method)
            {
                case DEFLATED:
                    def.finish();
                    while (!def.finished())
                    {
                        deflate();
                    }
                    if ((current.flag & 8) == 0)
                    {
                        // verify size, compressed size, and crc-32 settings
                        if (e.size != def.getBytesRead())
                        {
                            throw new ZipException("invalid entry size (expected " + e.size + " but got "
                                + def.getBytesRead() + " bytes)");
                        }
                        if (e.csize != def.getBytesWritten())
                        {
                            throw new ZipException("invalid entry compressed size (expected " + e.csize + " but got "
                                + def.getBytesWritten() + " bytes)");
                        }
                        if (e.crc != crc.getValue())
                        {
                            throw new ZipException("invalid entry CRC-32 (expected 0x" + Long.toHexString(e.crc)
                                + " but got 0x" + Long.toHexString(crc.getValue()) + ")");
                        }
                    }
                    else
                    {
                        e.size = def.getBytesRead();
                        e.csize = def.getBytesWritten();
                        e.crc = crc.getValue();
                        writeEXT(e);
                    }
                    def.reset();
                    written += e.csize;
                    break;
                case STORED:
                    // we already know that both e.size and e.csize are the same
                    if (e.size != written - locoff)
                    {
                        throw new ZipException("invalid entry size (expected " + e.size + " but got "
                            + (written - locoff) + " bytes)");
                    }
                    if (e.crc != crc.getValue())
                    {
                        throw new ZipException("invalid entry crc-32 (expected 0x" + Long.toHexString(e.crc)
                            + " but got 0x" + Long.toHexString(crc.getValue()) + ")");
                    }
                    break;
                default:
                    throw new ZipException("invalid compression method");
            }
            crc.reset();
            current = null;
        }
    }
     /**
     * Writes an array of bytes to the current ZIP entry data. This method will block until all the bytes are written.
     * 
     * @param b the data to be written
     * @param off the start offset in the data
     * @param len the number of bytes that are written
     * @exception ZipException if a ZIP file error has occurred
     * @exception IOException if an I/O error has occurred
     */
    public synchronized void write(byte[] b, int off, int len)
        throws IOException
    {
        ensureOpen();
        if (off < 0 || len < 0 || off > b.length - len)
        {
            throw new IndexOutOfBoundsException();
        }
        else if (len == 0)
        {
            return;
        }
        
        if (current == null)
        {
            throw new ZipException("no current ZIP entry");
        }
        ZipEntry entry = current.entry;
        switch (entry.method)
        {
            case DEFLATED:
                super.write(b, off, len);
                break;
            case STORED:
                written += len;
                if (written - locoff > entry.size)
                {
                    throw new ZipException("attempt to write past end of STORED entry");
                }
                out.write(b, off, len);
                break;
            default:
                throw new ZipException("invalid compression method");
        }
        crc.update(b, off, len);
    }
    
    /**
     * Finishes writing the contents of the ZIP output stream without closing the underlying stream. Use this method
     * when applying multiple filters in succession to the same output stream.
     * 
     * @exception ZipException if a ZIP file error has occurred
     * @exception IOException if an I/O exception has occurred
     */
    public void finish()
        throws IOException
    {
        ensureOpen();
        if (finished)
        {
            return;
        }
        if (current != null)
        {
            closeEntry();
        }
        if (xentries.size() < 1)
        {
            throw new ZipException("ZIP file must have at least one entry");
        }
        // write central directory
        long off = written;
        for (XEntry xentry : xentries)
            writeCEN(xentry);
        writeEND(off, written - off);
        finished = true;
    }
    
    /**
     * Closes the ZIP output stream as well as the stream being filtered.
     * 
     * @exception ZipException if a ZIP file error has occurred
     * @exception IOException if an I/O error has occurred
     */
    public void close()
        throws IOException
    {
        if (!closed)
        {
            super.close();
            closed = true;
        }
    }
    
    /*
     * Writes local file (LOC) header for specified entry.
     */
    private void writeLOC(XEntry xentry)
        throws IOException
    {
        ZipEntry e = xentry.entry;
        int flag = xentry.flag;
        writeInt(LOCSIG); // LOC header signature
        writeShort(version(e)); // version needed to extract
        writeShort(flag); // general purpose bit flag
        writeShort(e.method); // compression method
        writeInt(e.time); // last modification time
        if ((flag & 8) == 8)
        {
            // store size, uncompressed size, and crc-32 in data descriptor
            // immediately following compressed entry data
            writeInt(0);
            writeInt(0);
            writeInt(0);
        }
        else
        {
            writeInt(e.crc); // crc-32
            writeInt(e.csize); // compressed size
            writeInt(e.size); // uncompressed size
        }
        byte[] nameBytes = null;
        if ("UTF-8".equalsIgnoreCase(fileNameEncoding))
        {
            nameBytes = getUTF8Bytes(e.name);
        }
        else
        {
            nameBytes = e.name.getBytes(fileNameEncoding);
        }
        writeShort(nameBytes.length);
        writeShort(e.extra != null ? e.extra.length : 0);
        writeBytes(nameBytes, 0, nameBytes.length);
        if (e.extra != null)
        {
            writeBytes(e.extra, 0, e.extra.length);
        }
        locoff = written;
    }
    
    /*
     * Writes extra data descriptor (EXT) for specified entry.
     */
    private void writeEXT(ZipEntry e)
        throws IOException
    {
        writeInt(EXTSIG); // EXT header signature
        writeInt(e.crc); // crc-32
        writeInt(e.csize); // compressed size
        writeInt(e.size); // uncompressed size
    }
    
   

[xaqk008]

没人回答吗？自己顶下。

[zj304292653]

我用的方法是直接复制出jdk中的那个ZipOutputStream类，然后改写下那个写入文件名的部分，具体可以谷歌百度

[MiceRice]

确认下压缩时用的是什么字符集，是不是UTF-8？

[xaqk008]

[Quote=引用 2 楼 的回复:]
我用的方法是直接复制出jdk中的那个ZipOutputStream类，然后改写下那个写入文件名的部分，具体可以谷歌百度
[/Quote]

具体怎么改的？可以给出代码吗？

[xaqk008]

[Quote=引用 2 楼 的回复:]
我用的方法是直接复制出jdk中的那个ZipOutputStream类，然后改写下那个写入文件名的部分，具体可以谷歌百度
[/Quote]

是“GBK”

[xaqk008]

额 上面错了 是回答的3楼

[MiceRice]

其实还是字符集问题，参考下这里解决吧：
http://hi.baidu.com/wqj403/blog/item/b90b2537c73c7e380855a962.html

[xaqk008]

我说的是文件中文内容乱码，不是中文文件名乱码。

[xaqk008]

楼上说的类具体怎么用啊 麻烦给出代码 谢谢了

[xaqk008]

晕 明天还没解决的话就结贴。。。。。。。。。。。。。。。。。。。。。