java实现多个⽂件压缩成压缩包本⽂实例为⼤家分享了java实现多个⽂件压缩的具体代码，供⼤家参考，具体内容如下
需要⽤到的ant.jar
package util;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;
public class ZipTools {
public static final String ZIP_FILENAME = ""; //需要解压缩的⽂件名
public static final String ZIP_DIR = "";  //需要压缩的⽂件夹
public static final String UN_ZIP_DIR = "";  //要解压的⽂件⽬录
public static final int BUFFER = 1024 ;  //缓存⼤⼩
public static void zipFile(String baseDir,String fileName) throws Exception{
List fileList=getSubFiles(new File(baseDir));
ZipOutputStream zos=new ZipOutputStream(new FileOutputStream(fileName));
ZipEntry ze=null;
byte[] buf=new byte[BUFFER];
int readLen=0;
for(int i = 0; i <fileList.size(); i++) {
File f=((i);
ze=new ZipEntry(getAbsFileName(baseDir, f));
ze.setSize(f.length());
ze.setTime(f.lastModified());
zos.putNextEntry(ze);
InputStream is=new BufferedInputStream(new FileInputStream(f));
while ((ad(buf, 0, BUFFER))!=-1) {
zos.write(buf, 0, readLen);
}
is.close();
}
zos.close();
}
private static String getAbsFileName(String baseDir, File realFileName){
File real=realFileName;
File base=new File(baseDir);
String Name();
while (true) {
ParentFile();
if(real==null)
break;
if(real.equals(base))spring怎么读多个文件
break;
else
Name()+"/"+ret;
}
return ret;
}
private static List getSubFiles(File baseDir){
List ret=new ArrayList();
File[] tmp=baseDir.listFiles();
for (int i = 0; i <tmp.length; i++) {
if(tmp[i].isFile())
ret.add(tmp[i]);
if(tmp[i].isDirectory())
ret.addAll(getSubFiles(tmp[i]));
}
return ret;
}
public static void upZipFile() throws Exception{
ZipFile zfile=new ZipFile(ZIP_FILENAME);
Enumeration ies();
ZipEntry ze=null;
byte[] buf=new byte[1024];
while(zList.hasMoreElements()){
ze=(Element();
if(ze.isDirectory()){
File f=new File(ZIP_Name());
f.mkdir();
continue;
}
OutputStream os=new BufferedOutputStream(new FileOutputStream(getRealFileName(ZIP_DIR, ze.getName())));      InputStream is=new InputStream(ze));
int readLen=0;
while ((ad(buf, 0, 1024))!=-1) {
os.write(buf, 0, readLen);
}
is.close();
os.close();
}
zfile.close();
}
public static File getRealFileName(String baseDir, String absFileName){
String[] dirs=absFileName.split("/");
File ret=new File(baseDir);
if(dirs.length>1){
for (int i = 0; i < dirs.length-1;i++) {
ret=new File(ret, dirs[i]);
}
if(!ists())
ret.mkdirs();
ret=new File(ret, dirs[dirs.length-1]);
return ret;
}
return ret;
}
public static void deleteDirFile(String path){
File file=new File(path);
if(file.isDirectory()){    //如果是⽬录，先递归删除
String[] list=file.list();
for(int i=0;i<list.length;i++){
deleteDirFile(path+"\\"+list[i]); //先删除⽬录下的⽂件
}
}
file.delete();
}
public static String newFolder(String dir){
java.io.File myFilePath=new java.io.File(dir);
if(myFilePath.isDirectory()){}else{
myFilePath.mkdirs();
}
return dir;
}
public static String getFileNames(String path){
File file = new File(path);      // get file list where the path has
File[] array = file.listFiles();    // 获得⽂件列表
String pdfNames="";
for(int i=0;i<array.length;i++){
if(array[i].isFile()){
if(array[i].getName().endsWith(".pdf")){  //获得pdf⽂件名称
pdfNames+=array[i].getName().substring(0,array[i].getName().length()-4)+",";
}
}
}
if(pdfNames.length()>0){
pdfNames.substring(0,pdfNames.length()-1);
}
return pdfNames;
}
public static void copyFile(String oldPath, String newPath) {
try {
int bytesum = 0;
int byteread = 0;
File oldfile = new File(oldPath);
if (ists()) {    //⽂件存在时
InputStream inStream = new FileInputStream(oldPath); //读⼊原⽂件
FileOutputStream fs = new FileOutputStream(newPath);
byte[] buffer = new byte[1444];
while ( (byteread = ad(buffer)) != -1) {
bytesum += byteread;    //字节数⽂件⼤⼩
fs.write(buffer, 0, byteread);
}
inStream.close();
}
}
catch (Exception e) {
System.out.println("copy file error!");
e.printStackTrace();
}
}
public static boolean fileExist(String fileNames,String pdfName){
boolean flag=false;
if(!"".equals(fileNames)){
String[] nameArr=fileNames.split(",");
for(int i=0;i<nameArr.length;i++){
if(pdfName.equals(nameArr[i])){    //如果⽂件名相同则执⾏拷贝操作(拷贝到zip⽬录准备打包)
flag=true;
break;
}
}
}
return flag;
}
public static void deleteFileAndDir(String path){
File file = new File(path);
File[] array = file.listFiles();
for(int i=0;i<array.length;i++){
if(array[i].isFile()){
array[i].delete();
}else if(array[i].isDirectory()){
deleteDirFile(array[i].getPath());
}
}
}
}
以上就是本⽂的全部内容，希望对⼤家的学习有所帮助，也希望⼤家多多⽀持。

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