java中将文件写入文件夹中，并解压

在Java中，你可以使用`java.util.zip`包中的`ZipOutputStream`来创建并写入压缩文件，然后使用`java.io.File`类配合`Files`工具类来操作文件和目录。以下是基本步骤： 1. 创建`ZipOutputStream`： ```java import java.io.*; import java.nio.file.Files; import java.util.zip.*; public void zipAndWrite(String sourceFile, String destinationFolder) throws IOException { File folder = new File(destinationFolder); if (!folder.exists() && !folder.mkdir()) { throw new IOException("Failed to create destination folder."); } ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(destinationFolder + "/archive.zip")); // 添加源文件到压缩流 addFileToZip(sourceFile, zos); zos.close(); } private void addFileToZip(String inputFile, ZipOutputStream zos) throws IOException { FileInputStream fis = new FileInputStream(inputFile); ZipEntry entry = new ZipEntry(inputFile.substring(inputFile.lastIndexOf("/") + 1)); zos.putNextEntry(entry); byte[] bytes = new byte[4096]; int length; while ((length = fis.read(bytes)) >= 0) { zos.write(bytes, 0, length); } zos.closeEntry(); fis.close(); } ``` 2. 解压文件： ```java public void unzip(String zipfile, String targetFolder) throws IOException { File destDir = new File(targetFolder); if (!destDir.exists() && !destDir.mkdirs()) { throw new IOException("Failed to create target directory for extraction."); } try (ZipInputStream zis = new ZipInputStream(new FileInputStream(zipfile))) { ZipEntry entry; while ((entry = zis.getNextEntry()) != null) { String entryName = entry.getName(); File outputFile = new File(destDir, entryName); if (entry.isDirectory()) { outputFile.mkdirs(); } else { try (OutputStream outputStream = new FileOutputStream(outputFile)) { byte[] buffer = new byte[1024]; int read; while ((read = zis.read(buffer)) > 0) { outputStream.write(buffer, 0, read); } outputStream.flush(); } } zis.closeEntry(); } } } ```