把指定目錄下面的所有文件壓縮成一個ZIP

今天項目中用到了將word壓縮成zip文件供用戶下載，特記下以後備用

/**
 * function:把指定目錄下面的所有文件壓縮成一個ZIP
 * creator:morris
 * create date:2009/05/31
 * updater:
 * update date:
*/

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

public class ZipFile {

    private String destinationDir = null;   // zip file dir
    private String fileName = null;         // zip file name
    private ZipOutputStream zout;           // zip class
    private ZipInputStream zin;

    public ZipFile(String temp1,String temp2){
        this.destinationDir = temp1;
        this.fileName=temp2;
    }

    public void newZip() throws FileNotFoundException {
        File temp=new File(this.destinationDir);
        temp.mkdirs();
        zout =
            new ZipOutputStream(
                new FileOutputStream(
                    this.destinationDir + "\\" + this.fileName));
    }

    //首先刪除該文件夾下所有文件
    public void deleteAllFile(File tempDir) throws Exception {
        File temp_file[] = null;
        temp_file = tempDir.listFiles();
        for (int i = 0; i < temp_file.length; i++) {
            if (temp_file[i].isFile()) {
            	temp_file[i].delete();
            }
        }
    }
    
    //壓縮文件夾下面的所有文件為ZIP文件
    public void createZipFile(File tempDir) throws Exception {
        File temp_file[] = null;
        byte temp[] = new byte[512];
        temp_file = tempDir.listFiles();
        for (int i = 0; i < temp_file.length; i++) {
            if (temp_file[i].isFile()) {
                FileInputStream in = new FileInputStream(temp_file[i]);
                String temp1=new String(temp_file[i].getAbsolutePath().getBytes("ISO8859-1"));
                if(!temp1.endsWith("zip")){
                    ZipEntry zip =
                        new ZipEntry(temp_file[i].getName());
                    zout.putNextEntry(zip);
                    int len = 0;
                    while ((len = in.read(temp)) != -1) {
                        zout.write(temp, 0, len);
                    }
                    zout.closeEntry();                	
                }
            }else{
                createZipFile(temp_file[i]);
            }
        }
    }

    public void closeZip() throws Exception{
        this.zout.close();
    }

    public void getZipFile(File tempDir){
        try{
            this.newZip();
            this.createZipFile(tempDir);
            this.closeZip();
        }catch(Exception e){
            e.printStackTrace();
        }
    }

    //解壓ZIP文件
    public void refreshZipFile() throws Exception{
        ZipEntry temp=null;
        FileOutputStream temp_file=null;
        byte btemp[]=new byte[256];
        zin=new ZipInputStream(new FileInputStream(this.destinationDir + "\\" + this.fileName));
        while((temp=zin.getNextEntry())!=null){
            File local=new File((new File(temp.getName())).getParent());
            local.mkdirs();
            temp_file=new FileOutputStream(temp.getName());
            while(zin.read(btemp)!=-1){
                temp_file.write(btemp);
            }
            temp_file.close();
            zin.closeEntry();
        }
        zin.close();
    }

}