package org.wxcl.compress;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.apache.tools.zip.*;
public class CompressUtil {
/**
* 缓冲区大小
*/
private int buffer_size=1024;
/**
* 将basepath目录下的所有文件打包成由comppath和filename组成的文件中
* 这里使用public List getSubFileList(final String basepath)
* 方法完成对目录下文件的File对象化,生成指定zip文件
* @param basepath
* @param filename
* @throws IOException
*/
public void zipfile(final String basepath,final String comppath,final String filename) throws IOException{
List filelist=this.getSubFileList(basepath);
ZipEntry ze=null;
ZipOutputStream zos=new ZipOutputStream(
new FileOutputStream(
comppath+filename
));
byte[] buffer=new byte[this.buffer_size];
int index=0;
for (int i = 0; i < filelist.size(); i++) {
File file=(File)filelist.get(i);
ze=new ZipEntry(file.getName());
ze.setSize(file.length());
ze.setTime(file.lastModified());
zos.putNextEntry(ze);
InputStream is=new BufferedInputStream(new FileInputStream(file));
while((index=is.read(buffer,0,this.buffer_size))!=-1){
zos.write(buffer, 0, index);
}
is.close();
}
zos.close();
}
/**
* 将prefix和filenamelist组成完成路么径后,
* 由public List getSubFileList(final String prefix,final List filenamelist)
* File对象化,生成指定zip文件
* @param prefix 要压缩文件的前半路径
* @param filenamelist 要压缩文件的后半路径列表
* @param compath 压缩后存放路径
* @param filename 压缩文件名
* @throws IOException
*/
public void zipfile(final String prefix,final List filenamelist,final String compath,final String filename) throws IOException{
List filelist=this.getSubFileList(prefix,filenamelist);
ZipEntry ze=null;
ZipOutputStream zos=new ZipOutputStream(
new FileOutputStream(
compath+filename
));
byte[] buffer=new byte[this.buffer_size];
int index=0;
for (int i = 0; i < filelist.size(); i++) {
File file=(File)filelist.get(i);
ze=new ZipEntry(file.getName());
ze.setSize(file.length());
ze.setTime(file.lastModified());
zos.putNextEntry(ze);
InputStream is=new BufferedInputStream(new FileInputStream(file));
while((index=is.read(buffer,0,this.buffer_size))!=-1){
zos.write(buffer, 0, index);
}
is.close();
}
zos.close();
}
/**
* 路径File对象化
* @param basepath 父路径
* @return 返回File列表
*/
public List getSubFileList(final String basepath){
List rv=new ArrayList();
File suf=new File(basepath);
File[] filelist=suf.listFiles();
for (int i = 0; i < filelist.length; i++) {
if(filelist[i].isFile()){
rv.add(filelist[i]);
}
}
return rv;
}
/**
* 路径File对象化
* @param prefix 父路径
* @param filenamelist 子路径列表
* @return 返回File列表
*/
public List getSubFileList(final String prefix,final List filenamelist){
List rv=new ArrayList();
for(int i=0;i<filenamelist.size();i++){
String filename=(String)filenamelist.get(i);
File temp=new File(prefix+filename);
if(temp.exists()){
rv.add(temp);
}
}
return rv;
}
}
(备忘)
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.apache.tools.zip.*;
public class CompressUtil {
/**
* 缓冲区大小
*/
private int buffer_size=1024;
/**
* 将basepath目录下的所有文件打包成由comppath和filename组成的文件中
* 这里使用public List getSubFileList(final String basepath)
* 方法完成对目录下文件的File对象化,生成指定zip文件
* @param basepath
* @param filename
* @throws IOException
*/
public void zipfile(final String basepath,final String comppath,final String filename) throws IOException{
List filelist=this.getSubFileList(basepath);
ZipEntry ze=null;
ZipOutputStream zos=new ZipOutputStream(
new FileOutputStream(
comppath+filename
));
byte[] buffer=new byte[this.buffer_size];
int index=0;
for (int i = 0; i < filelist.size(); i++) {
File file=(File)filelist.get(i);
ze=new ZipEntry(file.getName());
ze.setSize(file.length());
ze.setTime(file.lastModified());
zos.putNextEntry(ze);
InputStream is=new BufferedInputStream(new FileInputStream(file));
while((index=is.read(buffer,0,this.buffer_size))!=-1){
zos.write(buffer, 0, index);
}
is.close();
}
zos.close();
}
/**
* 将prefix和filenamelist组成完成路么径后,
* 由public List getSubFileList(final String prefix,final List filenamelist)
* File对象化,生成指定zip文件
* @param prefix 要压缩文件的前半路径
* @param filenamelist 要压缩文件的后半路径列表
* @param compath 压缩后存放路径
* @param filename 压缩文件名
* @throws IOException
*/
public void zipfile(final String prefix,final List filenamelist,final String compath,final String filename) throws IOException{
List filelist=this.getSubFileList(prefix,filenamelist);
ZipEntry ze=null;
ZipOutputStream zos=new ZipOutputStream(
new FileOutputStream(
compath+filename
));
byte[] buffer=new byte[this.buffer_size];
int index=0;
for (int i = 0; i < filelist.size(); i++) {
File file=(File)filelist.get(i);
ze=new ZipEntry(file.getName());
ze.setSize(file.length());
ze.setTime(file.lastModified());
zos.putNextEntry(ze);
InputStream is=new BufferedInputStream(new FileInputStream(file));
while((index=is.read(buffer,0,this.buffer_size))!=-1){
zos.write(buffer, 0, index);
}
is.close();
}
zos.close();
}
/**
* 路径File对象化
* @param basepath 父路径
* @return 返回File列表
*/
public List getSubFileList(final String basepath){
List rv=new ArrayList();
File suf=new File(basepath);
File[] filelist=suf.listFiles();
for (int i = 0; i < filelist.length; i++) {
if(filelist[i].isFile()){
rv.add(filelist[i]);
}
}
return rv;
}
/**
* 路径File对象化
* @param prefix 父路径
* @param filenamelist 子路径列表
* @return 返回File列表
*/
public List getSubFileList(final String prefix,final List filenamelist){
List rv=new ArrayList();
for(int i=0;i<filenamelist.size();i++){
String filename=(String)filenamelist.get(i);
File temp=new File(prefix+filename);
if(temp.exists()){
rv.add(temp);
}
}
return rv;
}
}
(备忘)