新疆建设网 工程信息网站搜索引擎有哪些种类

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前面介绍的使用第三方的jar进行压缩，下面介绍使用jdk自带的方法进行压缩：

Test：

package com.home;import java.io.IOException;public class Test {public Test() {try {ZipUtil.doZip("D://test", "D://test1.zip");// 压缩整个文件来ZipUtil.doZip("D://test.doc", "D://test2.zip");// 压缩单个文件} catch (IOException e) {e.printStackTrace();}}public static void main(String[] args) {new Test();}}

ZipUtil：

package com.home;import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;public class ZipUtil {/*** 压缩的接口* * @param src*            源文件全路径* @param des*            目标zip文件全路径* @throws IOException*/public static void doZip(String src, String des) throws IOException {File srcFile = new File(src);// 源文件File zipFile = new File(des);// 目标zip文件ZipOutputStream zos = null;try {zos = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(zipFile)));String basePath = null;if (srcFile.isDirectory()) {basePath = srcFile.getPath();} else {basePath = srcFile.getParent();}zipFile(srcFile, basePath, zos);} finally {if (zos != null) {zos.closeEntry();zos.close();}}}/*** 压缩文件* * @param srcFile* @param basePath* @param zos* @throws IOException*/private static void zipFile(File srcFile, String basePath,ZipOutputStream zos) throws IOException {File[] files = null;if (srcFile.isDirectory()) {files = srcFile.listFiles();} else {files = new File[1];files[0] = srcFile;}BufferedInputStream bis = null;String pathName;byte[] buf = new byte[1024];int len = 0;try {for (File file : files) {if (file.isDirectory()) {if (!basePath.endsWith("\\")) {basePath += "\\";}pathName = file.getPath().substring(basePath.length())+ "\\";zos.putNextEntry(new ZipEntry(pathName));zipFile(file, basePath, zos);} else {if (!basePath.endsWith("\\")) {basePath += "\\";}pathName = file.getPath().substring(basePath.length());bis = new BufferedInputStream(new FileInputStream(file));zos.putNextEntry(new ZipEntry(pathName));while ((len = bis.read(buf)) > 0) {zos.write(buf, 0, len);}}}} finally {if (bis != null) {bis.close();}}}}