Java压缩文件夹最实用简单的方法

import java.io.FileOutputStream; import java.io.IOException; import java.nio.file.FileVisitResult; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.Paths; import java.nio.file.SimpleFileVisitor; import java.nio.file.attribute.BasicFileAttributes; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream; // Source code to create a zip file from a given folder // This example program recursively adds all files in the folder // Works only with Java 7 and above public class ZipFolder { public static void main(String[] args) throws Exception { ZipFolder zf = new ZipFolder(); // Use the following paths for windows //String folderToZip = "c:\\demo\\test"; //String zipName = "c:\\demo\\test.zip"; // Linux/mac paths String folderToZip = "/Users/jj/test"; String zipName = "/Users/jj/test.zip"; zf.zipFolder(Paths.get(folderToZip), Paths.get(zipName)); } // Uses java.util.zip to create zip file private void zipFolder(Path sourceFolderPath, Path zipPath) throws Exception { ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(zipPath.toFile())); Files.walkFileTree(sourceFolderPath, new SimpleFileVisitor() { public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException { zos.putNextEntry(new ZipEntry(sourceFolderPath.relativize(file).toString())); Files.copy(file, zos); zos.closeEntry(); return FileVisitResult.CONTINUE; } }); zos.close(); } }

解压-t test.zip

//方法1： public void unZip(String zipfile) throws IOException { //检查是否是zip文件,并判断文件是否存在 checkFileName(zipfile); long startTime = System.currentTimeMillis(); File zfile=new File(zipfile); //获取待解压文件的父路径 String Parent=zfile.getParent()+"/"; FileInputStream fis=new FileInputStream(zfile); Charset charset = Charset.forName("GBK");//默认UTF-8 // CheckedInputStream cis = new CheckedInputStream(fis,new CRC32()); ZipInputStream zis = new ZipInputStream(fis,charset);// 输入源zip路径 ZipEntry entry=null; BufferedOutputStream bos=null; while ((entry=zis.getNextEntry())!=null) { if (entry.isDirectory()) { File filePath=new File(Parent+entry.getName()); //如果目录不存在，则创建 if (!filePath.exists()) { filePath.mkdirs(); } }else{ FileOutputStream fos=new FileOutputStream(Parent+entry.getName()); bos=new BufferedOutputStream(fos); byte buf[] = new byte[1024]; int len; while ((len = zis.read(buf)) != -1) { bos.write(buf, 0, len); } zis.closeEntry(); //关闭的时候会刷新 bos.close(); } } zis.close(); long endTime = System.currentTimeMillis(); System.out.println("解压完成！所需时间为："+(endTime-startTime)+"ms"); // System.out.println("校验和："+cis.getChecksum().getValue()); } private void checkFileName(String name) { //文件是否存在 if (!new File(name).exists()) { System.err.println("要解压的文件不存在！"); System.exit(1); } // 判断是否是zip文件 int index = name.lastIndexOf("."); String str=name.substring(index+1); if (!"zip".equalsIgnoreCase(str)) { System.err.println("不是zip文件,无法解压！"); System.exit(1); } }