public class ZipEntry extends Objectimplements Cloneable- package com.sunny.zip;
- import java.io.BufferedInputStream;
- import java.io.BufferedOutputStream;
- 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.ArrayList;
- import java.util.Enumeration;
- import java.util.List;
- import java.util.zip.ZipEntry;
- import java.util.zip.ZipFile;
- import java.util.zip.ZipOutputStream;
- /**
- * 此类用于测试JAVA的ZIP压缩及解压
- *
- * @author Sunny Lee (2008-1-4)
- * @version 1.0
- */
- public class ZipManager {
- /**
- * zip压缩功能测试. 将d:\\temp\\zipout目录下的所有文件连同子目录压缩到d:\\temp\\out.zip.
- * 此方法可保留被压缩文件的目录结构
- *
- * @param baseDir
- * 所要压缩的目录名(包含绝对路径)
- * @param objFileName
- * 压缩后的文件名
- * @throws Exception
- */
- public void createZip(String baseDir, String objFileName) throws Exception {
- File folderObject = new File(baseDir);
- if (folderObject.exists()) {
- List fileList = getSubFiles(new File(baseDir));
- // 压缩文件名
- ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(
- objFileName));
- ZipEntry ze = null;
- byte[] buf = new byte[1024];
- int readLen = 0;
- for (int i = 0; i < fileList.size(); i++) {
- File f = (File) fileList.get(i);
- System.out.println("Adding: " + f.getPath() + f.getName());
- /*
- * 创建一个ZipEntry,并设置Name和其它的一些属性
- * 注意,该ZipEntry是包含目录结构的,此功能是由getAbsFileName(String,string)完成的
- */
- ze = new ZipEntry(getAbsFileName(baseDir, f));
- ze.setSize(f.length());
- ze.setTime(f.lastModified());
- // 将ZipEntry加到zos中,再写入实际的文件内容
- zos.putNextEntry(ze);
- InputStream is = new BufferedInputStream(new FileInputStream(f));
- while ((readLen = is.read(buf, 0, 1024)) != -1) {
- zos.write(buf, 0, readLen);
- }
- is.close();
- System.out.println("done...");
- }
- zos.close();
- } else {
- throw new Exception("this folder isnot exist!");
- }
- }
- /**
- * 对某一个文件进行压缩,不允许是目录或包含子目录
- *
- * @param sourceFileName
- * 被压缩的目标文件,不允许是目录或包含子目录
- * @param zipFilename
- * 为压缩后的文件指定的名称
- * @return 压缩文件的大小
- * @throws Exception
- */
- public long createFileToZip(String sourceFileName, String zipFilename)
- throws Exception {
- File sourceFile = new File(sourceFileName);
- byte[] buf = new byte[1024];
- // 压缩文件名
- File objFile = new File(zipFilename);
- ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(objFile));
- ZipEntry ze = null;
- // 创建一个ZipEntry,并设置Name和其它的一些属性
- ze = new ZipEntry(sourceFile.getName());
- ze.setSize(sourceFile.length());
- ze.setTime(sourceFile.lastModified());
- // 将ZipEntry加到zos中,再写入实际的文件内容
- zos.putNextEntry(ze);
- InputStream is = new BufferedInputStream(
- new FileInputStream(sourceFile));
- int readLen = -1;
- while ((readLen = is.read(buf, 0, 1024)) != -1) {
- zos.write(buf, 0, readLen);
- }
- is.close();
- zos.close();
- return objFile.length();
- }
- /**
- * 测试解压缩功能. 将d:\\download\\test.zip连同子目录解压到d:\\temp\\zipout目录下.
- *
- * @param sourceZip
- * 待解压的zip文件
- * @param outFileName
- * @throws IOException
- */
- public void releaseZipToFile(String sourceZip, String outFileName)
- throws IOException {
- ZipFile zfile = new ZipFile(sourceZip);
- System.out.println("待解压的文件是: " + zfile.getName());
- Enumeration zList = zfile.entries();
- ZipEntry ze = null;
- byte[] buf = new byte[1024];
- while (zList.hasMoreElements()) {
- // 从ZipFile中得到一个ZipEntry
- ze = (ZipEntry) zList.nextElement();
- if (ze.isDirectory()) {
- continue;
- }
- // 以ZipEntry为参数得到一个InputStream,并写到OutputStream中
- InputStream is = new BufferedInputStream(zfile.getInputStream(ze));
- OutputStream os = new BufferedOutputStream(new FileOutputStream(
- getRealFileName(outFileName, ze.getName())));
- int readLen = 0;
- while ((readLen = is.read(buf, 0, 1024)) != -1) {
- os.write(buf, 0, readLen);
- }
- is.close();
- os.close();
- System.out.println("Extracted: " + ze.getName());
- }
- zfile.close();
- }
- /**
- * 取得指定目录以及其各级子目录下的所有文件的列表,注意,返回的列表中不含目录.
- *
- * @param baseDir
- * File 指定的目录
- * @return 包含java.io.File的List
- */
- private List getSubFiles(File baseDir) {
- List fileList = new ArrayList();
- File[] tmp = baseDir.listFiles();
- for (int i = 0; i < tmp.length; i++) {
- // 如果是文件,直接加入fileList
- if (tmp[i].isFile()) {
- fileList.add(tmp[i]);
- }
- // 如果是目录,递归调用本方法,并将结果集加入fileList
- if (tmp[i].isDirectory()) {
- fileList.addAll(getSubFiles(tmp[i]));
- }
- }
- return fileList;
- }
- /**
- * 给定根目录,返回一个相对路径所对应的实际文件名.
- *
- * @param baseDir
- * 指定根目录
- * @param absFileName
- * 相对路径名,来自于ZipEntry中的name
- * @return java.io.File 实际的文件
- */
- private File getRealFileName(String baseDir, String absFileName) {
- String[] dirs = absFileName.split("/");
- File ret = new File(baseDir);
- // 创建目录结构
- if (dirs.length > 1) {
- for (int i = 0; i < dirs.length - 1; i++) {
- ret = new File(ret, dirs[i]);
- }
- }
- if (!ret.exists()) {
- ret.mkdirs();
- }
- ret = new File(ret, dirs[dirs.length - 1]);
- return ret;
- }
- /**
- * 给定根目录及文件的实际路径,返回带有相对路径的文件名,用于zip文件中的路径.
- * 如将绝对路径,baseDir\dir1\dir2\file.txt改成 dir1/dir2/file.txt
- *
- * @param baseDir
- * java.lang.String 根目录
- * @param realFileName
- * java.io.File 实际的文件名
- * @return 相对文件名
- */
- private String getAbsFileName(String baseDir, File realFileName) {
- File real = realFileName;
- File base = new File(baseDir);
- String ret = real.getName();
- while (true) {
- real = real.getParentFile();
- if (real == null)
- break;
- if (real.equals(base))
- break;
- else {
- ret = real.getName() + "/" + ret;
- }
- }
- return ret;
- }
- public static void main(String args[]) {
- ZipManager manager = new ZipManager();
- try {
- manager.releaseZipToFile("d:\\download\\src.zip",
- "d:\\temp\\zipout");
- // manager.createZip("d:\\temp\\zipout", "d:\\temp\\out.zip");
- } catch (Exception e) {
- e.printStackTrace();
- }
- System.out.println("over");
- }
- }
复制代码 public class ZipEntry extends Objectimplements Cloneable
此类用于表示 ZIP 文件条目。
以上代码是一位大神写的一个关于测试JAVA的ZIP压缩及解压
的代码 希望对你有所帮助 |