java压缩与解压缩文件
http://www.oschina.net/code/snippet_2482052_54816
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Java代码 package com.yabushan.test.util.upload; import java.io.BufferedOutputStream; import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.Enumeration; import java.util.HashMap; import java.util.List; import java.util.Map; import org.apache.tools.zip.ZipEntry; import org.apache.tools.zip.ZipFile; import org.apache.tools.zip.ZipOutputStream; import org.slf4j.LoggerFactory; public class ZipUtil { protected static final org.slf4j.Logger log = LoggerFactory.getLogger(ZipUtil.class); private static final int BUFFER = 2048; /** * 解压文件到指定路径 * * @param filePath * @param upZipPath * @return 返回解压的文件集合 */ public static List<File> unZip(String filePath, String upZipPath) { List<File> list = new ArrayList<File>(); int count = -1; File file = null; InputStream is = null; FileOutputStream fos = null; BufferedOutputStream bos = null; // 生成指定的保存目录 String savePath = upZipPath; if (!new File(savePath).exists()) { new File(savePath).mkdirs(); } try { ZipFile zipFile = new ZipFile(filePath, "GBK"); Enumeration enu = zipFile.getEntries(); while (enu.hasMoreElements()) { ZipEntry zipEntry = (ZipEntry) enu.nextElement(); if (zipEntry.isDirectory()) { new File(savePath + "/" + zipEntry.getName()).mkdirs(); continue; } if (zipEntry.getName().indexOf("/") != -1) { new File(savePath + "/" + zipEntry.getName().substring(0, zipEntry.getName().lastIndexOf("/"))) .mkdirs(); } is = zipFile.getInputStream(zipEntry); file = new File(savePath + "/" + zipEntry.getName()); fos = new FileOutputStream(file); bos = new BufferedOutputStream(fos, BUFFER); byte buf[] = new byte[BUFFER]; while ((count = is.read(buf)) > -1) { bos.write(buf, 0, count); } bos.flush(); fos.close(); is.close(); list.add(file); } zipFile.close(); return list; } catch (IOException ioe) { log.error(ioe.getMessage()); return list; } } /** * RAR 需要配置rar路径 * * @param filePath * @param unRarPath * 路径要唯一，否则获取文件列表会出错 * @return */ public static int unRar(String filePath, String unRarPath) { int result = -99; if (!(new File(unRarPath).exists())) { new File(unRarPath).mkdirs(); } try { //String cmd = GlobalConfig.getConfigValue("cmd.path"); String cmd="test"; String unrarCmd = cmd + " e -r -o+ " + filePath + " " + unRarPath; Runtime rt = Runtime.getRuntime(); Process pre = rt.exec(unrarCmd); while(result==-99){ try { Thread.sleep(1000L); result = pre.exitValue(); } catch (Exception e) { // TODO: handle exception result = -99; } } InputStreamReader isr = new InputStreamReader(pre.getInputStream()); BufferedReader bf = new BufferedReader(isr); String line = null; while ((line = bf.readLine()) != null) { line = line.trim(); if ("".equals(line)) { continue; } log.info(line); } bf.close(); if (result != 0) { log.error("unRar " + pre.exitValue()); } // 杀死进程 退出 // pre.destroy(); return result; } catch (Exception e) { log.error(e.getMessage() + ": " + e.getStackTrace()); return -2; } } /*** * 将多个文件打成压缩包 * * @param list * 需打包的文件路径集合 * @param zipfilename * 压缩包名称 */ public static void listToZip(List<String> list, String zipfilename) { FileInputStream is = null; String path = ""; File file = null; ZipOutputStream zos = null; try { if (list != null && list.size() > 0) { //String uri = GlobalConfig.getConfigValue("zipFile.path"); String uri="D:/ZIP"; File f = new File(uri); if(!f.exists()){ f.mkdirs(); } zipfilename = uri + zipfilename; //创建zip文件输出流 zos = new ZipOutputStream(new FileOutputStream(new File( zipfilename))); zos.setEncoding("GBK"); for (int i = 0; i < list.size(); i++) { path = list.get(i); file = new File(path); if (file.exists()) { //创建源文件输入流 is = new FileInputStream(file); zos.putNextEntry(new ZipEntry(file.getName())); byte[] buf = new byte[BUFFER]; int length = -1; while ((length = is.read(buf)) != -1) { zos.write(buf, 0, length); zos.flush(); } zos.closeEntry(); is.close(); } else { System.out.println("源文件不存在"); } } } } catch (Exception e) { e.printStackTrace(); } finally { try { if (is != null) { is.close(); } if (zos != null) { zos.close(); } } catch (IOException e) { e.printStackTrace(); } } } /*** * 将多个文件打成压缩包(压缩包内文件名称由参数中传入) * * @param list * 需打包的文件信息集合 * @param zipfilename * 压缩包名称 */ public static void listMapToZip(List<Map<String,Object>> list, String zipfilename) { FileInputStream is = null; String path = ""; File file = null; ZipOutputStream zos = null; try { if (list != null && list.size() > 0) { //String uri = GlobalConfig.getConfigValue("zipFile.path"); String uri="D:/ZIP"; File f = new File(uri); if(!f.exists()){ f.mkdirs(); } zipfilename = uri + zipfilename; //创建zip文件输出流 zos = new ZipOutputStream(new FileOutputStream(new File( zipfilename))); zos.setEncoding("GBK"); for (Map map : list) { path = map.get("filePath")+""; file = new File(path); if (file.exists()) { //创建源文件输入流 is = new FileInputStream(file); zos.putNextEntry(new ZipEntry(map.get("fileName")+"")); byte[] buf = new byte[BUFFER]; int length = -1; while ((length = is.read(buf)) != -1) { zos.write(buf, 0, length); zos.flush(); } zos.closeEntry(); is.close(); } else { System.out.println("源文件不存在"); } } } } catch (Exception e) { e.printStackTrace(); } finally { try { if (is != null) { is.close(); } if (zos != null) { zos.close(); } } catch (IOException e) { e.printStackTrace(); } } } public static void main(String[] args) throws Exception { List<String> list = new ArrayList<String>(); list.add("D:/File/img/tempImg/7f7ffd45856be6aa.txt"); list.add("D:/File/img/tempImg/63f8959465093ec0.jpeg"); list.add("D:/File/img/tempImg/815b476dc8cf790e.txt"); list.add("D:/File/img/tempImg/4451519220dad91a.txt"); //ZipUtil.listToZip(list, "测试.zip"); System.out.println(ZipUtil.unZip("D:/ZIP测试.zip", "D:/ZIP/bb/").toString()); } } |
