java文件夹解压和压缩 java实现文件夹解压和压缩

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;
public class Main {
  public static void main(String[] args) throws IOException {
   //解决中文乱码
   //压缩 参数改成你自己的源文件路径和压缩后的文件路径
 //yasuo("C:\\file\\", "C:\\file.zip");
 //解压 参数改成你自己的源文件路径和解压后的文件路径
 jieya("C:\\file.zip", "C:\\file\\");
  }

 public static void jieya(String zipPath, String path) throws IOException, FileNotFoundException {
 //创建解压后的文件夹
 File pt=new File(path.substring(0,path.length()-1));
 if(!pt.exists()) {
  pt.mkdirs();
 }
 //try(resource)来保证InputStream正确关闭
 try(ZipInputStream zip=new ZipInputStream(new FileInputStream(zipPath))){
  //ZipEntry表示一个压缩文件或目录
  ZipEntry entry;
  while((entry=zip.getNextEntry())!=null) {
  String name=entry.getName();
  //压缩文件
  if(!(entry.getName().contains(File.separator))) {
   FileOutputStream file= new FileOutputStream( path+ name);
   int n=0;
   while((n=zip.read())!=-1) {
   file.write(n);
   }
  }else {
  //目录
   int index=name.lastIndexOf("\\");
   File file= new File(path+ name.substring(0,index));
   if(!file.exists()) {
   file.mkdirs();
   }
   //如果不是空目录
   if(index!=name.length()-1) {
   FileOutputStream f= new FileOutputStream( path+ name);
   int n=0;
   while((n=zip.read())!=-1) {
    f.write(n);
   }
   }
  }
  }
  zip.closeEntry();
 }
 }

 public static void yasuo(String path, String zipPath) throws IOException, FileNotFoundException {
 File zp=new File(zipPath);
 if(!zp.exists()) {
  zp.createNewFile();
 }
 
 try(ZipOutputStream zip=new ZipOutputStream(new FileOutputStream(zp))) {
   File files= new File(path);
   File[] f=files.listFiles();
   for (File file : f) {
    zipAll(zip, file,file.getName());
  }
  
   }
 }

 public static void zipAll(ZipOutputStream zip, File files,String name) throws IOException, FileNotFoundException {
 if(files.isDirectory()) {
  File[] files2=files.listFiles();
  if(files2.length==0||files2==null) {
  zip.putNextEntry(new ZipEntry(name+File.separator));
  }else{
  for (File file2 : files2) {
   if(file2.isFile()) {
   zip.putNextEntry(new ZipEntry(name+File.separator+file2.getName()));
   int n;
   FileInputStream input=new FileInputStream(file2);
   while((n=input.read())!=-1) {
    zip.write(n);
   }
   }
   else {
   zipAll(zip,file2,name+File.separator+file2.getName());
   }
  }
  }
 }else {
  zip.putNextEntry(new ZipEntry(name));
  int n;
  FileInputStream input=new FileInputStream(files);
  while ((n=input.read())!=-1) {
  zip.write(n);
  }
 }
 }
}