java压缩与解压（Java.util.zip），javajava.util.zip,import java.

java压缩与解压（Java.util.zip），javajava.util.zip,import java.

import java.io.BufferedInputStream;import java.io.BufferedOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.util.zip.ZipEntry;import java.util.zip.ZipException;import java.util.zip.ZipFile;import java.util.zip.ZipInputStream;import java.util.zip.ZipOutputStream;/** * 文件解压缩 * * @author Tony * */public final class FileToZip {    FileToZip() {    }    /**     * 将存放在sourceFilePath目录下的源文件,打包成fileName名称的ZIP文件,并存放到zipFilePath。     *     * @param sourceFilePath     *            待压缩的文件路径     * @param zipFilePath     *            压缩后存放路径     * @param fileName     *            压缩后文件的名称     * @return flag     */    public static boolean fileToZip(String sourceFilePath, String zipFilePath,                                    String fileName) {        boolean flag = false;        File sourceFile = new File(sourceFilePath);        FileInputStream fis = null;        BufferedInputStream bis = null;        FileOutputStream fos = null;        ZipOutputStream zos = null;        if (sourceFile.exists() == false) {            System.out.println(">>>>>> 待压缩的文件目录：" + sourceFilePath                               + " 不存在. <<<<<<");        } else {            try {                File zipFile = new File(zipFilePath + "/" + fileName + ".RAR");                //                File zipFile = new File(zipFilePath + "/" + fileName + ".zip");                if (zipFile.exists()) {                    System.out.println(">>>>>> " + zipFilePath + " 目录下存在名字为："                                       + fileName + ".RAR" + " 打包文件. <<<<<<");                } else {                    File[] sourceFiles = sourceFile.listFiles();                    if (null == sourceFiles || sourceFiles.length < 1) {                        System.out.println(">>>>>> 待压缩的文件目录：" + sourceFilePath                                           + " 里面不存在文件,无需压缩. <<<<<<");                    } else {                        fos = new FileOutputStream(zipFile);                        zos = new ZipOutputStream(new BufferedOutputStream(fos));                        byte[] bufs = new byte[1024 * 10];                        for (int i = 0; i < sourceFiles.length; i++) {                            // 创建ZIP实体,并添加进压缩包                            ZipEntry zipEntry = new ZipEntry(sourceFiles[i]                                                             .getName());                            zos.putNextEntry(zipEntry);                            // 读取待压缩的文件并写进压缩包里                            fis = new FileInputStream(sourceFiles[i]);                            bis = new BufferedInputStream(fis, 1024 * 10);                            int read = 0;                            while ((read = bis.read(bufs, 0, 1024 * 10)) != -1) {                                zos.write(bufs, 0, read);                            }                        }                        flag = true;                    }                }            } catch (FileNotFoundException e) {                e.printStackTrace();                throw new RuntimeException(e);            } catch (IOException e) {                e.printStackTrace();                throw new RuntimeException(e);            } finally {                // 关闭流                try {                    if (null != bis)                        bis.close();                    if (null != zos)                        zos.close();                } catch (IOException e) {                    e.printStackTrace();                    throw new RuntimeException(e);                }            }        }        return flag;    }    public static void unZip(String sourceFilePath, String unzipFilePath) {        File sourceFile = new File(sourceFilePath);        ZipFile zipFile = null;        ZipEntry zipEntry = null;        ZipInputStream zis = null;        FileOutputStream fos = null;        FileInputStream fis = null;        if (sourceFile.exists() == false) {            System.out.println(">>>>>> 待解压的文件目录：" + sourceFilePath                               + " 不存在. <<<<<<");        } else {            try {                System.out.println(">>>>>> 开始解压：" + sourceFilePath + " <<<<<<");                zipFile = new ZipFile(sourceFile);                zis = new ZipInputStream(new FileInputStream(sourceFile));                while ((zipEntry = zis.getNextEntry()) != null) {                    String fileName = zipEntry.getName();                    File temp = new File(unzipFilePath + "\\" + fileName);                    System.out.println(fileName + ">>>>>>解压到" + unzipFilePath);                    if (!temp.getParentFile().exists()) {                        temp.getParentFile().mkdirs();                    }                    fos = new FileOutputStream(temp);                    InputStream is = zipFile.getInputStream(zipEntry);                    int len = 0;                    while ((len = is.read()) != -1) {                        fos.write(len);                    }                    is.close();                }            } catch (FileNotFoundException e) {                // TODO Auto-generated catch block                e.printStackTrace();            } catch (ZipException e) {                // TODO Auto-generated catch block                e.printStackTrace();            } catch (IOException e) {                // TODO Auto-generated catch block                e.printStackTrace();            } finally {                // 关闭流                try {                    if (null != fos)                        fos.close();                    if (null != fis)                        fis.close();                    if (null != zis)                        zis.close();                } catch (IOException e) {                    e.printStackTrace();                    throw new RuntimeException(e);                }            }        }    }    /**     * 将文件打包成ZIP压缩文件,main方法测试     *     * @param args     */    public static void main(String[] args) {        String sourceFilePath = "D:\\sss\\lp20120301.rar";        // String zipFilePath = "D:\\sss";        // String fileName = "lp20120301";        // boolean flag = FileToZip.fileToZip(sourceFilePath, zipFilePath,        // fileName);        // if(flag) {        // System.out.println(">>>>>> 文件打包成功. <<<<<<");        // } else {        // System.out.println(">>>>>> 文件打包失败. <<<<<<");        // }        FileToZip.unZip(sourceFilePath, "E:\\sdf");    }}