java简单的压缩方法(zip压缩)

来源：互联网发布：草图大师是什么软件编辑：程序博客网时间：2024/04/29 16:23

前几天有个功能需要上传文件到FTP，由于文件过大，想到了压缩，发现了一个简单的java压缩方法。

ZipOutputSream等类都是java库自带的，下面上代码。

public class yasuo {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 */@SuppressWarnings("resource")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())+ "/";zos.putNextEntry(new ZipEntry(pathName));zipFile(file, basePath, zos);} else {pathName = file.getPath().substring(basePath.length());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();}}}        //实现public static void main(String args[]){yasuo yasuo2=new yasuo();try {yasuo2.doZip("E:\\abc.log","E:\\test.zip");System.out.println("success");} catch (IOException e) {System.out.println("wrong");e.printStackTrace();}}}

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