写了一个用java.util.zip创建和读取zip文件的类 
跟大家分享一下 
里面用了递归调用 

呵呵 
近期用了不少递归调用！有空总结一下！ 

[code:1:c8a71e86d8]     /** 
TestZip.java 
coding by Serol Luo. 
rollingpig@163.com 
2003/07/03 
http://www.chinaunix.net/forum/viewforum.php?f=26 
转载请保留此信息 
*/ 
import java.util.*; 
import java.util.zip.*; 
import java.io.*; 
class TestZip  
{ 
public void zip(String zipFileName,String inputFile)throws Exception{ 
zip(zipFileName,new File(inputFile)); 
} 
public void zip(String zipFileName,File inputFile)throws Exception{ 
ZipOutputStream out=new ZipOutputStream(new FileOutputStream(zipFileName)); 
zip(out,inputFile,""); 
System.out.println("zip done"); 
out.close(); 
} 

public void unzip(String zipFileName,String outputDirectory)throws Exception{ 
ZipInputStream in=new ZipInputStream(new FileInputStream(zipFileName)); 
ZipEntry z; 
while ((z=in.getNextEntry() )!= null) 
{ 
System.out.println("unziping "+z.getName()); 
if (z.isDirectory()) 
{ 
String name=z.getName(); 
name=name.substring(0,name.length()-1); 
File f=new File(outputDirectory+File.separator+name); 
f.mkdir(); 
System.out.println("mkdir "+outputDirectory+File.separator+name); 
} 
else{ 
File f=new File(outputDirectory+File.separator+z.getName()); 
f.createNewFile(); 
FileOutputStream out=new FileOutputStream(f); 
int b; 
while ((b=in.read()) != -1) 
out.write(b); 
out.close(); 
} 
} 

in.close(); 
} 

public void zip(ZipOutputStream out,File f,String base)throws Exception{ 
System.out.println("Zipping  "+f.getName()); 
if (f.isDirectory()) 
{ 
File[] fl=f.listFiles(); 
out.putNextEntry(new ZipEntry(base+"/")); 
base=base.length()==0?"":base+"/"; 
for (int i=0;i<fl.length ;i++ ) 
{ 
zip(out,fl[i],base+fl[i].getName()); 
} 
} 
else 
{ 
out.putNextEntry(new ZipEntry(base)); 
FileInputStream in=new FileInputStream(f); 
int b; 
while ((b=in.read()) != -1) 
out.write(b); 
in.close(); 
} 

} 
public static void main(String[] args)  
{ 
try{ 
TestZip t=new TestZip(); 
t.zip("c:\\test.zip","c:\\test"); 
t.unzip("c:\\test.zip","c:\\test2"); 
} 
catch(Exception e){e.printStackTrace(System.out);} 
} 
}[/code:1:c8a71e86d8]