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java实现zip压缩文件
在网上找到这几种方法,感觉不错,收集起来,方便大家使用
- jdk自带的包java.util.zip.ZipOutputStream,不足之处,文件(夹)名称带中文时,出现乱码问题,实现代码如下
/** * 功能:把 sourceDir 目录下的所有文件进行 zip 格式的压缩,保存为指定 zip 文件 * @param sourceDir 如果是目录,eg:D:\\MyEclipse\\first\\testFile,则压缩目录下所有文件; * 如果是文件,eg:D:\\MyEclipse\\first\\testFile\\aa.zip,则只压缩本文件 * @param zipFile 最后压缩的文件路径和名称,eg:D:\\MyEclipse\\first\\testFile\\aa.zip */ public File doZip(String sourceDir, String zipFilePath) throws IOException { File file = new File(sourceDir); File zipFile = new File(zipFilePath); ZipOutputStream zos = null; try { // 创建写出流操作 OutputStream os = new FileOutputStream(zipFile); BufferedOutputStream bos = new BufferedOutputStream(os); zos = new ZipOutputStream(bos); String basePath = null; // 获取目录 if(file.isDirectory()) { basePath = file.getPath(); }else { basePath = file.getParent(); } zipFile(file, basePath, zos); }finally { if(zos != null) { zos.closeEntry(); zos.close(); } } return zipFile; } /** * @param source 源文件 * @param basePath * @param zos */ private void zipFile(File source, String basePath, ZipOutputStream zos) throws IOException { File[] files = null; if (source.isDirectory()) { files = source.listFiles(); } else { files = new File[1]; files[0] = source; } InputStream is = null; String pathName; byte[] buf = new byte[1024]; int length = 0; try{ for(File file : files) { if(file.isDirectory()) { pathName = file.getPath().substring(basePath.length() + 1) + "/"; zos.putNextEntry(new ZipEntry(pathName)); zipFile(file, basePath, zos); }else { pathName = file.getPath().substring(basePath.length() + 1); is = new FileInputStream(file); BufferedInputStream bis = new BufferedInputStream(is); zos.putNextEntry(new ZipEntry(pathName)); while ((length = bis.read(buf)) > 0) { zos.write(buf, 0, length); } } } }finally { if(is != null) { is.close(); } } }
- 使用org.apache.tools.zip.ZipOutputStream,代码如下
public class ZipCompressor { static final int BUFFER = 8192; private File zipFile; public ZipCompressor(String pathName) { zipFile = new File(pathName); } public void compress(String srcPathName) { File file = new File(srcPathName); if (!file.exists()) throw new RuntimeException(srcPathName + "不存在!"); try { FileOutputStream fileOutputStream = new FileOutputStream(zipFile); CheckedOutputStream cos = new CheckedOutputStream(fileOutputStream, new CRC32()); ZipOutputStream out = new ZipOutputStream(cos); String basedir = ""; compress(file, out, basedir); out.close(); } catch (Exception e) { throw new RuntimeException(e); } } private void compress(File file, ZipOutputStream out, String basedir) { /* 判断是目录还是文件 */ if (file.isDirectory()) { System.out.println("压缩:" + basedir + file.getName()); this.compressDirectory(file, out, basedir); } else { System.out.println("压缩:" + basedir + file.getName()); this.compressFile(file, out, basedir); } } /** 压缩一个目录 */ private void compressDirectory(File dir, ZipOutputStream out, String basedir) { if (!dir.exists()) return; File[] files = dir.listFiles(); for (int i = 0; i < files.length; i++) { /* 递归 */ compress(files[i], out, basedir + dir.getName() + "/"); } } /** 压缩一个文件 */ private void compressFile(File file, ZipOutputStream out, String basedir) { if (!file.exists()) { return; } try { BufferedInputStream bis = new BufferedInputStream( new FileInputStream(file)); ZipEntry entry = new ZipEntry(basedir + file.getName()); out.putNextEntry(entry); int count; byte data[] = new byte[BUFFER]; while ((count = bis.read(data, 0, BUFFER)) != -1) { out.write(data, 0, count); } bis.close(); } catch (Exception e) { throw new RuntimeException(e); } } }
- 可以用ant中的org.apache.tools.ant.taskdefs.Zip来实现,更加简单
public class ZipCompressorByAnt { private File zipFile; public ZipCompressorByAnt(String pathName) { zipFile = new File(pathName); } public void compress(String srcPathName) { File srcdir = new File(srcPathName); if (!srcdir.exists()) throw new RuntimeException(srcPathName + "不存在!"); Project prj = new Project(); Zip zip = new Zip(); zip.setProject(prj); zip.setDestFile(zipFile); FileSet fileSet = new FileSet(); fileSet.setProject(prj); fileSet.setDir(srcdir); //fileSet.setIncludes("**/*.java"); 包括哪些文件或文件夹 eg:zip.setIncludes("*.java"); //fileSet.setExcludes(...); 排除哪些文件或文件夹 zip.addFileset(fileSet); zip.execute(); } } 测试一下 Java代码package net.szh.zip; public class TestZip { public static void main(String[] args) { ZipCompressor zc = new ZipCompressor("E:\\szhzip.zip"); zc.compress("E:\\test"); ZipCompressorByAnt zca = new ZipCompressorByAnt("E:\\szhzipant.zip"); zca.compress("E:\\test"); } }
java实现zip压缩文件
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