Java_Zip
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from:http://www.oschina.net/code/snippet_101477_1212
package test;
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.Enumeration;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;
import org.apache.tools.zip.ZipOutputStream;
/**
* ZIP文件压缩和解压(要使用apache ant.jar以处理中文乱码)
* @author sunjun
* @version 2.0
*/
public class ZipUtil2 {
/**
* 压缩文件file成zip文件zipFile
* @param file
* 要压缩的文件
* @param zipFile
* 压缩文件存放地方
* @throws Exception
*/
public static void zip(File file, File zipFile) throws Exception {
ZipOutputStream output = null;
try {
output = new ZipOutputStream(new FileOutputStream(zipFile));
// 顶层目录开始
zipFile(output, file, "");
} catch (Exception ex) {
ex.printStackTrace();
} finally {
// 关闭流
if (output != null) {
output.flush();
output.close();
}
}
}
/**
* 压缩文件为zip格式
* @param output
* ZipOutputStream对象
* @param file
* 要压缩的文件或文件夹
* @param basePath
* 条目根目录
* @throws IOException
*/
private static void zipFile(ZipOutputStream output,File file,String basePath) throws IOException {
FileInputStream input = null;
try {
// 文件为目录
/*if (file.isDirectory()) {
// 得到当前目录里面的文件列表
File list[] = file.listFiles();
basePath = basePath + (basePath.length() == 0 ? "" : "/") + file.getName();
// 循环递归压缩每个文件
for (File f : list)
zipFile(output, f, basePath);
} else {
}*/
// 压缩文件 lines below were in else block
basePath = (basePath.length() == 0 ? "" : basePath + "/")+file.getName();
output.putNextEntry(new ZipEntry(basePath));
input = new FileInputStream(file);
int readLen = 0;
byte[] buffer = new byte[1024 * 8];
while ((readLen = input.read(buffer, 0, 1024 * 8)) != -1)
output.write(buffer, 0, readLen);
// 压缩文件 lines above were in else block
} catch (Exception ex) {
ex.printStackTrace();
} finally {
if (input != null)
input.close();
}
}
/**
* 解压zip文件
* @param zipFilePath
* zip文件绝对路径
* @param unzipDirectory
* 解压到的目录
* @throws Exception
public static void unzip(String zipFilePath, String unzipDirectory)
throws Exception {
// 定义输入输出流对象
InputStream input = null;
OutputStream output = null;
try {
// 创建文件对象
File file = new File(zipFilePath);
// 创建zip文件对象
ZipFile zipFile = new ZipFile(file);
// 创建本zip文件解压目录
String name = file.getName().substring(0,
file.getName().lastIndexOf("."));
File unzipFile = new File(unzipDirectory + "/" + name);
if (unzipFile.exists())
unzipFile.delete();
unzipFile.mkdir();
// 得到zip文件条目枚举对象
Enumeration zipEnum = zipFile.getEntries();
// 定义对象
ZipEntry entry = null;
String entryName = null, path = null;
String names[] = null;
int length;
// 循环读取条目
while (zipEnum.hasMoreElements()) {
// 得到当前条目
entry = (ZipEntry) zipEnum.nextElement();
entryName = new String(entry.getName());
// 用/分隔条目名称
names = entryName.split("\\/");
length = names.length;
path = unzipFile.getAbsolutePath();
for (int v = 0; v < length; v++) {
if (v < length - 1) // 最后一个目录之前的目录
FileUtil.createDirectory(path += "/" + names[v] + "/");
else { // 最后一个
if (entryName.endsWith("/")) // 为目录,则创建文件夹
FileUtil.createDirectory(unzipFile
.getAbsolutePath()
+ "/" + entryName);
else { // 为文件,则输出到文件
input = zipFile.getInputStream(entry);
output = new FileOutputStream(new File(unzipFile
.getAbsolutePath()
+ "/" + entryName));
byte[] buffer = new byte[1024 * 8];
int readLen = 0;
while ((readLen = input.read(buffer, 0, 1024 * 8)) != -1)
output.write(buffer, 0, readLen);
}
}
}
}
} catch (Exception ex) {
ex.printStackTrace();
} finally {
// 关闭流
if (input != null)
input.close();
if (output != null) {
output.flush();
output.close();
}
}
}
/**
* 测试
* @param args
* @throws Exception
*/
public static void main(String[] args) throws Exception {
//unzip("d:/桌面.zip", "f:/");
zip(new File("G:/922587054.xml"), new File("G:/922587054.zip"));
System.out.println("over..............");
}
}
