下载zip文件并解压到本地

文件并解压到本地"/>

下载zip文件并解压到本地

第一步：先从下载地址把文件下载到本地

/**     * TODO 下载文件到本地     * @author nadim  *      * @date add by wl   *       * @param fileUrl 远程下载地址*         * @param fileLocal 本地路径    *          * @throws Exception      */  
public boolean downloadFile(String fileUrl,String fileLocal) throws Exception {   boolean flag=false;       URL url = new URL(fileUrl);       HttpURLConnection urlCon = (HttpURLConnection) url.openConnection();     urlCon.setConnectTimeout(6000);    urlCon.setReadTimeout(6000);     int code = urlCon.getResponseCode();  if (code != HttpURLConnection.HTTP_OK) {    throw new Exception("文件读取失败");      }       //读文件流      DataInputStream in = new DataInputStream(urlCon.getInputStream());      DataOutputStream out = new DataOutputStream(new FileOutputStream(fileLocal));       byte[] buffer = new byte[2048];       int count = 0;    while ((count = in.read(buffer)) > 0) {      out.write(buffer, 0, count);     }       try {		if(out!=null) {		out.close();	}			if(in!=null) {	in.close();		}				} catch (Exception e) {	e.printStackTrace();	}       flag=true;    return flag;    } 

第二步：创建一个工具类

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;/*** 封装了XML转换成object，object转换成XML的代码* * @author Steven* */
public class ZipUtils {/*** @param sourcefiles 源文件(服务器上的zip包存放地址)* @param decompreDirectory 解压缩后文件存放的目录* @throws IOException IO异常*/@SuppressWarnings("unchecked")public static void unzip(String sourcefiles, String decompreDirectory) throws IOException {ZipFile readfile = null;try {readfile =new ZipFile(sourcefiles);Enumeration takeentrie = readfile.getEntries();ZipEntry zipEntry = null;File credirectory = new File(decompreDirectory);credirectory.mkdirs();while (takeentrie.hasMoreElements()) {zipEntry = (ZipEntry) takeentrie.nextElement();String entryName = zipEntry.getName();InputStream in = null;FileOutputStream out = null;try {if (zipEntry.isDirectory()) {String name = zipEntry.getName();name = name.substring(0, name.length() - 1);File  createDirectory = new File(decompreDirectory+ File.separator + name);createDirectory.mkdirs();} else {int index = entryName.lastIndexOf("\\");if (index != -1) {File createDirectory = new File(decompreDirectory+ File.separator+ entryName.substring(0, index));createDirectory.mkdirs();}index = entryName.lastIndexOf("/");if (index != -1) {File createDirectory = new File(decompreDirectory + File.separator + entryName.substring(0, index));createDirectory.mkdirs();}File unpackfile = new File(decompreDirectory + File.separator + zipEntry.getName());in = readfile.getInputStream(zipEntry);out = new FileOutputStream(unpackfile);int c;byte[] by = new byte[1024];while ((c = in.read(by)) != -1) {out.write(by, 0, c);}out.flush();}} catch (IOException ex) {ex.printStackTrace();throw new IOException("解压失败：" + ex.toString());} finally {if (in != null) {try {in.close();} catch (IOException ex) {}}if (out != null) {try {out.close();} catch (IOException ex) {ex.printStackTrace();}}in=null;out=null;}}} catch (IOException ex) {ex.printStackTrace();throw new IOException("解压失败：" + ex.toString());} finally {if (readfile != null) {try {readfile.close();} catch (IOException ex) {ex.printStackTrace();throw new IOException("解压失败：" + ex.toString());}}}}}

调用ZipUtils工具类中的unzip方法即可解压zip文件