package com.cfets.demo;import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.charset.Charset;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;public class Util {public static void main(String[] args) {// 文件存放位置String zipPath = "download/资产支持证券信用评级_20180820.xml.zip";File zipFile = new File(zipPath);String descDir = "download/";boolean flag = unZip(zipFile, descDir);System.out.println("解压成功还是失败=" + flag);}
/*** 解压zip文件* * @param zipFile目标文件* @param descDir解压后存放的位置* @return true/false*/public static boolean unZip(File zipFile, String descDir) {boolean flag = false;File pathFile = new File(descDir);if (!pathFile.exists()) {pathFile.mkdirs();}ZipFile zip = null;try {// 指定编码，否则压缩包里面不能有中文目录zip = new ZipFile(zipFile, Charset.forName("gbk"));for (Enumeration entries = zip.entries(); entries.hasMoreElements();) {ZipEntry entry = (ZipEntry) entries.nextElement();String zipEntryName = entry.getName();InputStream in = zip.getInputStream(entry);String outPath = (descDir + zipEntryName).replace("/",File.separator);// 判断路径是否存在,不存在则创建文件路径File file = new File(outPath.substring(0,outPath.lastIndexOf(File.separator)));if (!file.exists()) {file.mkdirs();}// 判断文件全路径是否为文件夹,如果是上面已经上传,不需要解压if (new File(outPath).isDirectory()) {continue;}OutputStream out = new FileOutputStream(outPath);byte[] buf1 = new byte[2048];int len;while ((len = in.read(buf1)) > 0) {out.write(buf1, 0, len);}in.close();out.close();}flag = true;// 必须关闭，否则无法删除该zip文件
            zip.close();} catch (IOException e) {e.printStackTrace();}return flag;}}