java 解压压缩包

1.解压压缩包，目前zip的压缩包可以解压，rar后缀的最新版本的不支持解压，官方目前好像也没给出好办法。

　　

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.util.Enumeration;

import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;
/**
     * 解压缩
     * 
     * @param zipFilePath
     *            压缩包路径
     * @param fileSavePath
     *            解压路径
     * @param isDelete
     *            是否删除源文件
     * @throws Exception
     */
    public static void unZip(String sZipFilePath, String sFileSavePath, boolean isDelete) throws Exception {
        try {
            (new File(sFileSavePath)).mkdirs();
            File f = new File(sZipFilePath);
            if ((!f.exists()) && (f.length() <= 0)) {
                throw new Exception("要解压的文件不存在!");
            }
            ZipFile zipFile = new ZipFile(f);
            String strPath, gbkPath, strtemp;
            File tempFile = new File(sFileSavePath);// 从当前目录开始
            strPath = tempFile.getAbsolutePath();// 输出的绝对位置
            Enumeration<ZipEntry> e = zipFile.getEntries();
            while (e.hasMoreElements()) {
                org.apache.tools.zip.ZipEntry zipEnt = e.nextElement();
                gbkPath = zipEnt.getName();
                if (zipEnt.isDirectory()) {
                    strtemp = strPath + File.separator + gbkPath;
                    File dir = new File(strtemp);
                    dir.mkdirs();
                    continue;
                } else {
                    // 读写文件
                    InputStream is = zipFile.getInputStream(zipEnt);
                    BufferedInputStream bis = new BufferedInputStream(is);
                    gbkPath = zipEnt.getName();
                    strtemp = strPath + File.separator + gbkPath;
                    // 建目录
                    String strsubdir = gbkPath;
                    for (int i = 0; i < strsubdir.length(); i++) {
                        if (strsubdir.substring(i, i + 1).equalsIgnoreCase("/")) {
                            String temp = strPath + File.separator + strsubdir.substring(0, i);
                            File subdir = new File(temp);
                            if (!subdir.exists())
                                subdir.mkdir();
                        }
                    }
                    FileOutputStream fos = new FileOutputStream(strtemp);
                    BufferedOutputStream bos = new BufferedOutputStream(fos);
                    int len;
                    byte[] buff = new byte[1024];
                    while ((len = bis.read(buff)) != -1) {
                        bos.write(buff, 0, len);
                    }
                    bos.close();
                    fos.close();
                }
            }
        } catch (Exception e) {
            throw new Exception("压缩文件解压失败，失败原因"+e.toString());
        }
        if (isDelete) {
            new File(sZipFilePath).delete();
        }
    }

2.自己新建一个main方法运行就ok啦，有问题欢迎留言讨论！