Java編寫解zip壓縮文件

此代碼源於李興華老師編寫的《Java開發實戰經典》

package uncompress.javaio;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;

public class ZipInputStreamDemo02 {

    /**
     * @param args
     * @throws IOException
     * @throws ZipException
     */
    public static void main(String[] args) throws ZipException, IOException {
        // TODO Auto-generated method stub
        File file=new File(File.separator+"root"+File.separator+"ziptest.zip");
        File outFile=null;
        ZipFile zipFile=new ZipFile(file);
        ZipInputStream zipInput=new ZipInputStream(new FileInputStream(file));
        ZipEntry entry=null;
        OutputStream out=null;
        InputStream input=null;
        while((entry=zipInput.getNextEntry())!=null){
            System.out.println("解壓縮"+entry.getName()+"文件");
            outFile=new File(File.separator+"root"+File.separator+entry.getName());
            if(!outFile.getParentFile().exists()){
                outFile.getParentFile().mkdir();
            }
            if(!outFile.exists()){
                outFile.createNewFile();
            }
            input=zipFile.getInputStream(entry);
            out=new FileOutputStream(outFile);
            int temp=0;
            while((temp=input.read())!=-1){
                out.write(temp);
            }
            input.close();
            out.close();
        }
    }

}