java实现文件zip压缩或者解压缩

zip压缩或者解压缩

package com.test;

import java.io.*;
import java.util.*;
import java.util.zip.ZipOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
public class TestZip {
public TestZip() {
}
/**
* 压缩文件
*
* @param srcfile
* File[] 需要压缩的文件列表
* @param zipfile
* File 压缩后的文件
*/
public static void ZipFiles(java.io.File[] srcfile, java.io.File zipfile) {
byte[] buf = new byte[1024];
try {
// Create the ZIP file
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(
zipfile));
// Compress the files
for (int i = 0; i < srcfile.length; i++) {
FileInputStream in = new FileInputStream(srcfile[i]);
// Add ZIP entry to output stream.
out.putNextEntry(new ZipEntry(srcfile[i].getName()));
// Transfer bytes from the file to the ZIP file
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
// Complete the entry
out.closeEntry();
in.close();
}
// Complete the ZIP file
out.close();
System.out.println("压缩完成.");
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 解压缩
*
* @param zipfile
* File 需要解压缩的文件
* @param descDir
* String 解压后的目标目录
*/
public static void UnZipFiles(java.io.File zipfile, String descDir) {
try {
// Open the ZIP file
ZipFile zf = new ZipFile(zipfile);
for (Enumeration entries = zf.entries(); entries.hasMoreElements();) {
// Get the entry name
ZipEntry entry = ((ZipEntry) entries.nextElement());
String zipEntryName = entry.getName();
InputStream in = zf.getInputStream(entry);
OutputStream out = new FileOutputStream(descDir + zipEntryName);
byte[] buf1 = new byte[1024];
int len;
while ((len = in.read(buf1)) > 0) {
out.write(buf1, 0, len);
}
// Close the file and stream
in.close();
out.close();
System.out.println("解压缩完成.");
}
} catch (IOException e) {
e.printStackTrace();
}
}
}