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ZipDemo.java
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import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
public class ZipDemo
{
private ArrayList<String> fileList;
private static final String OUTPUT_ZIP_FILE = "D:/work/Java.zip";
private static final String SOURCE_FOLDER = "D:/work/java";
public ZipDemo()
{
fileList = new ArrayList<String>();
}
public static void main(String[] args) throws IOException
{
ZipDemo zipDemo = new ZipDemo();
zipDemo.generateFileList(new File(SOURCE_FOLDER));
zipDemo.zipIt(OUTPUT_ZIP_FILE);
}
public void zipIt(String zipFile) throws IOException
{
byte[] buffer = new byte[1024];
/*
* If the Streams are within the
* "try-With-Resources" block, then it will be
* closed automatically.
*/
try (
FileOutputStream fos = new FileOutputStream(zipFile);
ZipOutputStream zos = new ZipOutputStream(fos))
{
System.out.println("Output to Zip : " + zipFile);
for (String file : this.fileList)
{
System.out.println("File Added : " + file);
ZipEntry ze = new ZipEntry(file);
zos.putNextEntry(ze);
FileInputStream in = new FileInputStream(SOURCE_FOLDER
+ File.separator + file);
int len;
while ((len = in.read(buffer)) > 0)
{
zos.write(buffer, 0, len);
}
in.close();
}
zos.closeEntry();
System.out.println("Zip file is created...");
}
}
/**
* Traverse a directory and get all files, and add the
* file into fileList.
*/
public void generateFileList(File node)
{
// add file only
if (node.isFile())
{
fileList.add(generateZipEntry(node.getAbsoluteFile().toString()));
}
if (node.isDirectory())
{
String[] subNote = node.list();
for (String filename : subNote)
{
generateFileList(new File(node, filename));
}
}
}
/**
* Format the file path for zip
*/
private String generateZipEntry(String file)
{
return file.substring(SOURCE_FOLDER.length() + 1, file.length());
}
}
OutputOutput to Zip : D:/work/Java.zip
File Added : CityInfoDemo\.classpath
File Added : CityInfoDemo\.project
File Added : CityInfoDemo\.settings\.jsdtscope
---
---
File Added : CityInfoDemo\WebContent\WEB-INF\web.xml
Zip file is created...
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