ANT压缩解压缩

转载：https://www.cnblogs.com/zhangfei/p/3296627.html

package com.test.utils;
 
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.util.Enumeration;
 
import org.apache.tools.ant.Project;
import org.apache.tools.ant.taskdefs.Zip;
import org.apache.tools.ant.types.FileSet;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;
 
public class ZipFileHandler {
 
    private final int buffer = 1024;
 
    private void createDirectory(String directory, String subDirectory) {
        String dir[];
        File fl = new File(directory);
        try {
            if (subDirectory == "" && 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());
        }
    }

    /**
     *
     * @param zipFilePath 待解压的zip文件
     * @param outputDirectory 解压后存放路径
     * @return
     */
    @SuppressWarnings("unchecked")//抑制编辑器的警告
    public boolean unZip(String zipFilePath, String outputDirectory) {
        boolean flag = false;
        try {
            //连接待压缩文件
            ZipFile zipFile = new ZipFile(zipFilePath);
            //得到zip包中所有的元素
            Enumeration e = zipFile.getEntries();
            ZipEntry zipEntry = null;
            createDirectory(outputDirectory, "");
            while (e.hasMoreElements()) {
                zipEntry = (ZipEntry) e.nextElement();
                System.out.println("unzip " + zipEntry.getName());
                if (zipEntry.isDirectory()) {
                    String name = zipEntry.getName().trim();
                    name = name.substring(0, name.length() - 1);
                    File f = new File(outputDirectory + File.separator + name);
                    if (!f.exists()) {
                        f.mkdir();
                    }
 
                } 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);
                    }

                     //Windows下File.separator是"\",这个根据不同的操作系统来决定的，Linux下是"/"
                    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[buffer];
                    int c;
                    while ((c = in.read(by)) != -1) {
                        out.write(by, 0, c);
                    }
                    in.close();
                    out.close();
                }
            }
            flag = true;
            System.out.println("unzip finished");
        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        }       
        return flag;
    }
 
    public boolean zip(String srcDirName, String zipFilePath) {
        boolean flag = false;
        try {
            File srcdir = new File(srcDirName);
            if (!srcdir.exists())
                throw new RuntimeException(srcDirName + " is not exist!");
 
            Project prj = new Project();
            Zip zip_ = new Zip();
            zip_.setProject(prj);
            zip_.setDestFile(new File(zipFilePath));
 
            FileSet fileSet = new FileSet();
            fileSet.setProject(prj);
            fileSet.setDir(srcdir);
            zip_.addFileset(fileSet);
 
            zip_.execute();
            flag = true;
            System.out.println("zip finished");
        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        }
        return flag;
    }
 
    public static void main(String[] args) {
        ZipFileHandler zh = new ZipFileHandler();
        zh.unZip("C:\\test.zip", "C:\\test1");
        zh.zip("C:\\test1", "C:\\test1.zip");
    }
 
}