首先将相关jar包引入pom.xml中
1 <!-- 解压zip --> 2 <dependency> 3 <groupId>org.apache.ant</groupId> 4 <artifactId>ant</artifactId> 5 <version>1.9.4</version> 6 </dependency>
废话不多说，直接上代码
import org.apache.tools.zip.ZipFile; import java.io.*; import java.util.Enumeration; import java.util.List; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream; public class ZipUtils { private static final int BUFFER_SIZE = 2 * 1024; /** * 压缩成ZIP 方法1 * 24 * * @param srcDir 压缩文件夹路径 * @param out 压缩文件输出流 * @param KeepDirStructure 是否保留原来的目录结构,true:保留目录结构; * false:所有文件跑到压缩包根目录下(注意：不保留目录结构可能会出现同名文件,会压缩失败) * @throws RuntimeException 压缩失败会抛出运行时异常 */ public static void toZip(String srcDir, OutputStream out, boolean KeepDirStructure) throws RuntimeException { long start = System.currentTimeMillis(); ZipOutputStream zos = null; try { zos = new ZipOutputStream(out); File sourceFile = new File(srcDir); compress(sourceFile, zos, sourceFile.getName(), KeepDirStructure); long end = System.currentTimeMillis(); System.out.println("压缩完成，耗时：" + (end - start) + " ms"); } catch (Exception e) { throw new RuntimeException("zip error from ZipUtils", e); } finally { if (zos != null) { try { zos.close(); } catch (IOException e) { e.printStackTrace(); } } } } /** * 压缩成ZIP 方法2 * * @param srcFiles 需要压缩的文件列表 * @param out 压缩文件输出流 * @throws RuntimeException 压缩失败会抛出运行时异常 */ public static void toZip(List<File> srcFiles, OutputStream out) throws RuntimeException { long start = System.currentTimeMillis(); ZipOutputStream zos = null; try { zos = new ZipOutputStream(out); for (File srcFile : srcFiles) { byte[] buf = new byte[BUFFER_SIZE]; zos.putNextEntry(new ZipEntry(srcFile.getName())); int len; FileInputStream in = new FileInputStream(srcFile); while ((len = in.read(buf)) != -1) { zos.write(buf, 0, len); } zos.closeEntry(); in.close(); } long end = System.currentTimeMillis(); System.out.println("压缩完成，耗时：" + (end - start) + " ms"); } catch (Exception e) { throw new RuntimeException("zip error from ZipUtils", e); } finally { if (zos != null) { try { zos.close(); } catch (IOException e) { e.printStackTrace(); } } } } /** * 递归压缩方法 * * @param sourceFile 源文件 * @param zos zip输出流 * @param name 压缩后的名称 * @param KeepDirStructure 是否保留原来的目录结构,true:保留目录结构; * false:所有文件跑到压缩包根目录下(注意：不保留目录结构可能会出现同名文件,会压缩失败) * @throws Exception */ private static void compress(File sourceFile, ZipOutputStream zos, String name, boolean KeepDirStructure) throws Exception { byte[] buf = new byte[BUFFER_SIZE]; if (sourceFile.isFile()) { // 向zip输出流中添加一个zip实体，构造器中name为zip实体的文件的名字 zos.putNextEntry(new ZipEntry(name)); // copy文件到zip输出流中 int len; FileInputStream in = new FileInputStream(sourceFile); while ((len = in.read(buf)) != -1) { zos.write(buf, 0, len); } // Complete the entry zos.closeEntry(); in.close(); } else { File[] listFiles = sourceFile.listFiles(); if (listFiles == null || listFiles.length == 0) { // 需要保留原来的文件结构时,需要对空文件夹进行处理 if (KeepDirStructure) { // 空文件夹的处理 zos.putNextEntry(new ZipEntry(name + "/")); // 没有文件，不需要文件的copy zos.closeEntry(); } } else { for (File file : listFiles) { // 判断是否需要保留原来的文件结构 if (KeepDirStructure) { // 注意：file.getName()前面需要带上父文件夹的名字加一斜杠, // 不然最后压缩包中就不能保留原来的文件结构,即：所有文件都跑到压缩包根目录下了 compress(file, zos, name + "/" + file.getName(), KeepDirStructure); } else { compress(file, zos, file.getName(), KeepDirStructure); } } } } } /** * 解压zip格式的压缩文件到指定位置 * * @param zipFileName 压缩文件 * @param extPlace 解压目录 * @throws Exception */ public static boolean unZipFiles(String zipFileName, String extPlace) { System.setProperty("sun.zip.encoding", System.getProperty("sun.jnu.encoding")); try { (new File(extPlace)).mkdirs(); File f = new File(zipFileName); ZipFile zipFile = new ZipFile(zipFileName, "GBK"); // 处理中文文件名乱码的问题 if ((!f.exists()) && (f.length() <= 0)) { throw new Exception("要解压的文件不存在!"); } String strPath, gbkPath, strtemp; File tempFile = new File(extPlace); strPath = tempFile.getAbsolutePath(); Enumeration<?> e = zipFile.getEntries(); while (e.hasMoreElements()) { org.apache.tools.zip.ZipEntry zipEnt = (org.apache.tools.zip.ZipEntry) e.nextElement(); gbkPath = zipEnt.getName(); if (zipEnt.isDirectory()) { strtemp = strPath + File.separator + gbkPath; File dir = new File(strtemp); dir.mkdirs(); continue; } else { // 读写文件 InputStream is = zipFile.getInputStream(zipEnt); BufferedInputStream bis = new BufferedInputStream(is); gbkPath = zipEnt.getName(); strtemp = strPath + File.separator + gbkPath;// 建目录 String strsubdir = gbkPath; for (int i = 0; i < strsubdir.length(); i++) { if (strsubdir.substring(i, i + 1).equalsIgnoreCase("/")) { String temp = strPath + File.separator + strsubdir.substring(0, i); File subdir = new File(temp); if (!subdir.exists()) subdir.mkdir(); } } FileOutputStream fos = new FileOutputStream(strtemp); BufferedOutputStream bos = new BufferedOutputStream(fos); int c; while ((c = bis.read()) != -1) { bos.write((byte) c); } bos.close(); fos.close(); } } return true; } catch (Exception e) { e.printStackTrace(); return false; } } }