java操作文件类 （文件解压缩 文件增删改查），java增删,import java.

java操作文件类 （文件解压缩 文件增删改查），java增删,import java.

import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.util.Enumeration;import org.apache.tools.zip.ZipEntry;import org.apache.tools.zip.ZipFile;import org.apache.tools.zip.ZipOutputStream;import org.slf4j.Logger;import org.slf4j.LoggerFactory;/** * 压缩，解压，删除，拷贝操作。 * 注意：此类中用到的压缩类ZipEntry等都来自于org.apache.tools包而非java.util。此包在ant.jar中有。 * * * @author Tony */public class FileUtil {    protected static Logger log = LoggerFactory.getLogger(FileUtil.class);    /**     *     * 压缩文件     *     * @param inputFileName     *            要压缩的文件或文件夹路径，例如：c:\\a.txt,c:\\a\     *     * @param outputFileName     *            输出zip文件的路径，例如：c:\\a.zip     *     */    public static void zip(String inputFileName, String outputFileName)    throws Exception {        ZipOutputStream out = new ZipOutputStream(new FileOutputStream(                    outputFileName));        zip(out, new File(inputFileName), "");        log.debug("压缩完成！");        out.closeEntry();        out.close();    }    /**     *     * 压缩文件     *     * @param out     *            org.apache.tools.zip.ZipOutputStream     *     * @param file     *            待压缩的文件     *     * @param base     *            压缩的根目录     *     */    private static void zip(ZipOutputStream out, File file, String base)    throws Exception {        if (file.isDirectory()) {            File[] fl = file.listFiles();            base = base.length() == 0 ? "" : base + File.separator;            for (int i = 0; i < fl.length; i++) {                zip(out, fl[i], base + fl[i].getName());            }        } else {            out.putNextEntry(new ZipEntry(base));            log.debug("添加压缩文件：" + base);            FileInputStream in = new FileInputStream(file);            int b;            while ((b = in.read()) != -1) {                out.write(b);            }            in.close();        }    }    /**     *     * 解压zip文件     *     * @param zipFileName     *            待解压的zip文件路径，例如：c:\\a.zip     *     * @param outputDirectory     *            解压目标文件夹,例如：c:\\a\     *     */    public static void unZip(String zipFileName, String outputDirectory)    throws Exception {        ZipFile zipFile = new ZipFile(zipFileName);        try {            Enumeration<?> e = zipFile.getEntries();            ZipEntry zipEntry = null;            createDirectory(outputDirectory, "");            while (e.hasMoreElements()) {                zipEntry = (ZipEntry) e.nextElement();                log.debug("解压：" + zipEntry.getName());                if (zipEntry.isDirectory()) {                    String name = zipEntry.getName();                    name = name.substring(0, name.length() - 1);                    File f = new File(outputDirectory + File.separator + name);                    f.mkdir();                    log                    .debug("创建目录：" + outputDirectory + File.separator                           + name);                } else {                    String fileName = zipEntry.getName();                    fileName = fileName.replace('\\', '/');                    if (fileName.indexOf("/") != -1) {                        createDirectory(outputDirectory, fileName.substring(0,                                        fileName.lastIndexOf("/")));                        fileName = fileName.substring(                                       fileName.lastIndexOf("/") + 1, fileName                                       .length());                    }                    File f = new File(outputDirectory + File.separator                                      + zipEntry.getName());                    f.createNewFile();                    InputStream in = zipFile.getInputStream(zipEntry);                    FileOutputStream out = new FileOutputStream(f);                    byte[] by = new byte[1024];                    int c;                    while ((c = in.read(by)) != -1) {                        out.write(by, 0, c);                    }                    in.close();                    out.close();                }            }        } catch (Exception ex) {            System.out.println(ex.getMessage());        } finally {            zipFile.close();            log.debug("解压完成！");        }    }    /**     * 功能描述：列出某文件夹及其子文件夹下面的文件，并可根据扩展名过滤     *     * @param path     *            文件     */    public static void list(File path) {        if (!path.exists()) {            System.out.println("文件名称不存?");        } else {            if (path.isFile()) {                if (path.getName().toLowerCase().endsWith(".pdf")                        || path.getName().toLowerCase().endsWith(".doc")                        || path.getName().toLowerCase().endsWith(".chm")                        || path.getName().toLowerCase().endsWith(".html")                        || path.getName().toLowerCase().endsWith(".htm")) {// 文件格式                    System.out.println(path);                    System.out.println(path.getName());                }            } else {                File[] files = path.listFiles();                for (int i = 0; i < files.length; i++) {                    list(files[i]);                }            }        }    }    /**     *     * @param directory     * @param subDirectory     */    private static void createDirectory(String directory, String subDirectory) {        String dir[];        File fl = new File(directory);        try {            if (subDirectory == "" &amp;&amp; fl.exists() != true) {                fl.mkdir();            } else if (subDirectory != "") {                dir = subDirectory.replace('\\', '/').split("/");                for (int i = 0; i < dir.length; i++) {                    File subFile = new File(directory + File.separator + dir[i]);                    if (subFile.exists() == false)                        subFile.mkdir();                    directory += File.separator + dir[i];                }            }        } catch (Exception ex) {            System.out.println(ex.getMessage());        }    }    /**     *     * 拷贝文件夹中的所有文件到另外一个文件夹     *     * @param srcDirector     *            源文件夹     *     * @param desDirector     *            目标文件夹     *     */    public static void copyFileWithDirector(String srcDirector,                                            String desDirector) throws IOException {        (new File(desDirector)).mkdirs();        File[] file = (new File(srcDirector)).listFiles();        for (int i = 0; i < file.length; i++) {            if (file[i].isFile()) {                log.debug("拷贝：" + file[i].getAbsolutePath() + "-->"                          + desDirector + "/" + file[i].getName());                FileInputStream input = new FileInputStream(file[i]);                FileOutputStream output = new FileOutputStream(desDirector                        + "/" + file[i].getName());                byte[] b = new byte[1024 * 5];                int len;                while ((len = input.read(b)) != -1) {                    output.write(b, 0, len);                }                output.flush();                output.close();                input.close();            }            if (file[i].isDirectory()) {                log.debug("拷贝：" + file[i].getAbsolutePath() + "-->"                          + desDirector + "/" + file[i].getName());                copyFileWithDirector(srcDirector + "/" + file[i].getName(),                                     desDirector + "/" + file[i].getName());            }        }    }    /**     *     * 删除文件夹     *     * @param folderPath     *            folderPath 文件夹完整绝对路径     *     */    public static void delFolder(String folderPath) throws Exception {        // 删除完里面所有内容        delAllFile(folderPath);        String filePath = folderPath;        filePath = filePath.toString();        File myFilePath = new File(filePath);        // 删除空文件夹        myFilePath.delete();    }    /**     *     * 删除指定文件夹下所有文件     *     * @param path     *            文件夹完整绝对路径     *     */    public static boolean delAllFile(String path) throws Exception {        boolean flag = false;        File file = new File(path);        if (!file.exists()) {            return flag;        }        if (!file.isDirectory()) {            return flag;        }        String[] tempList = file.list();        File temp = null;        for (int i = 0; i < tempList.length; i++) {            if (path.endsWith(File.separator)) {                temp = new File(path + tempList[i]);            } else {                temp = new File(path + File.separator + tempList[i]);            }            if (temp.isFile()) {                temp.delete();            }            if (temp.isDirectory()) {                // 先删除文件夹里面的文件                delAllFile(path + "/" + tempList[i]);                // 再删除空文件夹                delFolder(path + "/" + tempList[i]);                flag = true;            }        }        return flag;    }    /**     * @param args     */    public static void main(String[] args) {        // TODO Auto-generated method stub        File file = new File("H:\\");        list(file);    }}