java 压缩文件 解压文件

文件压缩：
import java.util.zip.*;
import java.io.*;
public class zip
{
public static void main(String[] argc)
{
// These are the files to include in the ZIP file
String[] filenames = new String[]{ "Uzip.java ", "zip.java "};

// Create a buffer for reading the files
byte[] buf = new byte[1024];

try {
// Create the ZIP file
String outFilename = "outfile.zip ";
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(outFilename));

// Compress the files
for (int i=0; i <filenames.length; i++) {
FileInputStream in = new FileInputStream(filenames[i]);

// Add ZIP entry to output stream.
out.putNextEntry(new ZipEntry(filenames[i]));

// 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();
} catch (IOException e) {
System.out.println(e.toString());
}
}
}


解压缩：

import java.util.zip.*;
import java.io.*;
public class Uzip
{
public static void main(String[] argc)
{
try {
// Open the ZIP file
String inFilename = "test.zip ";
ZipInputStream in = new ZipInputStream(new FileInputStream(inFilename));

// Get the first entry
ZipEntry entry = in.getNextEntry();

// Open the output file
String outFilename = "o ";
OutputStream out = new FileOutputStream(outFilename);

// Transfer bytes from the ZIP file to the output file
byte[] buf = new byte[1024];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}

// Close the streams
out.close();
in.close();
} catch (IOException e) {
System.out.println(e.toString());
}
}
}