调用org.apache.tools.zip实现Zip压缩 (by quqi99)

nawawa001

　　package jcss.search.base;
　　/*
调用org.apache.tools.zip实现压缩。
夜可以使用java.util.zip不过如果是中文的话，
解压缩的时候文件名字会是乱码。原因是解压缩软件的编码格式跟
java.util.zip.ZipInputStream的编码字符集不同
java.util.zip.ZipInputStream的字符集固定是UTF-8
　　注销的部分是解压缩的代码。
*/
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import org.apache.tools.zip.ZipOutputStream;
　　/*
* @作者：张华 @日期：2006-5-14 @说明：
*/
public class ZipUtil {
　　public void zip(String zipFileName, String inputFile) throws Exception {
zip(zipFileName, new File(inputFile));
}
　　public void zip(String zipFileName, File inputFile) throws Exception {
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(
new String(zipFileName.getBytes("gb2312"))));
System.out.println("zip start");
zip(out, inputFile, "");
System.out.println("zip done");
out.close();
}
　　public void zip(ZipOutputStream out, File f, String base) throws Exception {
System.out.println("Zipping " + f.getName());
if (f.isDirectory()) {
File[] fl = f.listFiles();
//out.putNextEntry(new ZipEntry(base + "/"));
out.putNextEntry(new org.apache.tools.zip.ZipEntry(base + "/"));
base = base.length() == 0 ? "" : base + "/";
for (int i = 0; i < fl.length; i++) {
zip(out, fl, base + fl.getName());
System.out.println(fl.getName());
//System.out.println(new String(fl.getName().getBytes("gb2312")));
}
} else {
//out.putNextEntry(new ZipEntry(base));
out.putNextEntry(new org.apache.tools.zip.ZipEntry(base));
System.out.println(base);
FileInputStream in = new FileInputStream(f);
int b;
　　while ((b = in.read()) != -1)
out.write(b);
in.close();
}
　　}
　　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);
if (subFile.exists() == false)
subFile.mkdir();
directory += File.separator + dir;
}
}
} catch (Exception ex) {
System.out.println(ex.getMessage());
}
}
　　public void unZip(String zipFileName, String outputDirectory)
throws Exception {
try {
org.apache.tools.zip.ZipFile zipFile = new org.apache.tools.zip.ZipFile(zipFileName);
java.util.Enumeration e = zipFile.getEntries();
org.apache.tools.zip.ZipEntry zipEntry = null;
createDirectory(outputDirectory, "");
while (e.hasMoreElements()) {
zipEntry = (org.apache.tools.zip.ZipEntry) e.nextElement();
System.out.println("正在解压: " + zipEntry.getName());
String name= null;
if (zipEntry.isDirectory()) {
name = zipEntry.getName();
name = name.substring(0, name.length() - 1);
File f = new File(outputDirectory + File.separator + name);
f.mkdir();
System.out.println("创建目录：" + outputDirectory + File.separator + name);
} else {
String fileName = zipEntry.getName();
fileName = fileName.replace('//', '/');
// System.out.println("测试文件1：" +fileName);
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);
}
out.close();
in.close();
}

}

//删除文件不能在这里删，因为文件正在使用，应在上传那处删
//解压后，删除压缩文件
//File zipFileToDel = new File(zipFileName);
//zipFileToDel.delete();
//System.out.println("正在删除文件："+ zipFileToDel.getCanonicalPath());

////删除解压后的那一层目录
//delALayerDir(zipFileName, outputDirectory);

} catch (Exception ex) {
System.out.println(ex.getMessage());
}
　　}
　　/**
* 删掉一层目录
* @param zipFileName
* @param outputDirectory
*/
public void delALayerDir(String zipFileName, String outputDirectory) {
　　String[] dir = zipFileName.replace('//', '/').split("/");
String fileFullName = dir[dir.length - 1]; //得到aa.zip
int pos = -1;
pos = fileFullName.indexOf(".");
String fileName = fileFullName.substring(0, pos); //得到aa
String sourceDir = outputDirectory + File.separator + fileName;
try {
copyFile(new File(outputDirectory), new File(sourceDir), new File(sourceDir));
　　deleteSourceBaseDir(new File(sourceDir));
　　} catch (Exception e) {
e.printStackTrace();
}
}
　　/**
* 将sourceDir目录的文件全部copy到destDir中去
*/
public void copyFile(File destDir, File sourceBaseDir, File sourceDir)
throws Exception {
　　File[] lists = sourceDir.listFiles();
String line = null;
String url = null;
if(lists == null)
return;
for (int i = 0; i < lists.length; i++) {
File f = lists;
if (f.isFile()) {
FileInputStream fis = new FileInputStream(f);
String content = "";
　　String sourceBasePath = sourceBaseDir.getCanonicalPath();
String destPath = destDir.getCanonicalPath();
String fPath = f.getCanonicalPath();
String drPath = destDir
+ fPath.substring(fPath.indexOf(sourceBasePath)
+ sourceBasePath.length());
FileOutputStream fos = new FileOutputStream(drPath);
　　byte[] b = new byte[2048];
while (fis.read(b) != -1) {
if (content != null)
content += new String(b);
else
content = new String(b);
b = new byte[2048];
}
　　content = content.trim();
fis.close();
　　fos.write(content.getBytes());
fos.flush();
fos.close();
　　} else {
//先新建目录
new File(destDir + File.separator + f.getName()).mkdir();
　　copyFile(destDir, sourceBaseDir, f); //递归调用
}
}
}
　　/**
* 将sourceDir目录的文件全部copy到destDir中去
*/
public void deleteSourceBaseDir(File curFile) throws Exception {
　　File[] lists = curFile.listFiles();
String line = null;
String url = null;
File parentFile = null;
for (int i = 0; i < lists.length; i++) {
File f = lists;
if (f.isFile()) {
f.delete();
//若它的父目录没有文件了，说明已经删完，应该删除父目录
parentFile = f.getParentFile();
if (parentFile.list().length == 0)
parentFile.delete();
} else {
deleteSourceBaseDir(f); //递归调用
}
}
}
　　public static void main(String[] args) {
try {
ZipUtil t = new ZipUtil();
//t.zip("e://test.zip", "e://test");
t.unZip("e://test.zip", "e://");

} catch (Exception e) {
e.printStackTrace(System.out);
}
}
　　}