zipper.java

《Java TCP/IP应用开发详解》的部分源程序,开发环境为ECLIPSE3.1

package section11;
import java.io.*;
import java.util.zip.*;
public class Zipper {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		if(args.length<2)
		{
			System.out.println("Usage:Java Zipper [-d level] outputfile.zip file1 file2...");
			return ;
		}
	    String outputFile=args[0];
	    int level=9;
	    int start=1;
	    if(args[0].equals("-d"))
	      {
	    	 try{
	    		 level=Integer.parseInt(args[1]);
	    		 outputFile=args[2];
	    		 start=3;
	    	 }catch(Exception e)
	    	 {
	    		 System.out.println("Usage:Java Zipper [-d level] outputfile.zip file1 file2...");
	    	     return;
	    	 }
	      }
	
	try{
		FileOutputStream fout=new FileOutputStream(new File(outputFile));
		ZipOutputStream zout=new ZipOutputStream(fout);
		zout.setLevel(level);
		for(int i=start;i<args.length;i++)
			{
			ZipEntry ze=new ZipEntry(args[i]);
			try
			{
				System.out.println("Compressing"+args[i]);
				FileInputStream fin=new FileInputStream(args[i]);
				zout.putNextEntry(ze);
				int c=-1;
				while((c=fin.read())!=-1)
					zout.write(c);
			    zout.closeEntry();
			    fin.close();
			    
			}catch(IOException e)
			{
				System.err.println(e);
			}
			
			}
		
	}catch(Exception e)
	{
		System.err.println(e);
	}
	
	
	}

}