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How to read files within a zip file |
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java.util.zip package provides facility of reading/writing zip files.
Example below lists files contained in zip file and reads first line of file.
import java.io.*;
import java.util.zip.*;
class readZipFiles
{
public static void main(String[] args)
{
if (args.length != 1)
{
System.out.println("Usage: java testFiles [zipfile path] ");
return;
}
try
{
String filename = args[0];
readZipFiles list = new readZipFiles( );
list.readZipFiles(filename);
}
catch (Exception e)
{
e.printStackTrace();
}
}
public void readZipFiles(String filename)
{
try
{
byte[] buf = new byte[1024];
ZipInputStream zipinputstream = null;
ZipEntry zipentry;
zipinputstream = new ZipInputStream(
new FileInputStream(filename));
zipentry = zipinputstream.getNextEntry();
while (zipentry != null)
{
//for each entry to be extracted
String entryName = zipentry.getName();
System.out.println("File ::"+entryName);
RandomAccessFile rf;
File newFile = new File(entryName);
String directory = newFile.getParent();
if(directory == null)
{
if(newFile.isDirectory())
break;
}
rf = new RandomAccessFile(entryName,"r");
String line;
if ((line =rf.readLine()) !=null)
{
System.out.println(line);
}
rf.close();
zipinputstream.closeEntry();
zipentry = zipinputstream.getNextEntry();
}//while
zipinputstream.close();
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
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