Android压缩文件(压缩目录)
?在Android中我们很多时候需要进行压缩与解压缩,就如本人的[ 足球即时比分 ]应用中也用到过.需要将一些信息进行收集再进行压缩,最后将压缩文件上传到服务器中(如何上传将文件上传到服务器中可以看我另一篇博文 :[ Android上传文件到服务器 ]).
??以下我的使用到的工具类的代码.需要注意的是,进行压缩与解压缩都不支持中文名,如果需要支持中文名的话,一般是使用 Ant中的ZipInputStream与ZipOutStream,由于手机上使用ant的jar包的话,会令应用或游戏的大小变大很多,所以尽量小引入其它第三方的jar包的.
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package rbase.app.nowscore.util;?import java.io.InputStream;?/** * Android Zip压缩解压缩 * @author ronald (www.r-base.net) */public final class ZipUtil { private ZipUtil(){ }? /** * 取得压缩包中的 文件列表(文件夹,文件自选) * @param zipFileString压缩包名字 * @param bContainFolder是否包括 文件夹 * @param bContainFile是否包括 文件 * @return * @throws Exception */ public static java.util.List<java.io.File> getFileList(String zipFileString, boolean bContainFolder, boolean bContainFile)throws Exception { java.util.List<java.io.File> fileList = new java.util.ArrayList<java.io.File>(); java.util.zip.ZipInputStream inZip = new java.util.zip.ZipInputStream(new java.io.FileInputStream(zipFileString)); java.util.zip.ZipEntry zipEntry; String szName = ""; while ((zipEntry = inZip.getNextEntry()) != null) {szName = zipEntry.getName();if (zipEntry.isDirectory()) { // get the folder name of the widget szName = szName.substring(0, szName.length() - 1); java.io.File folder = new java.io.File(szName); if (bContainFolder) { fileList.add(folder); } } else { java.io.File file = new java.io.File(szName); if (bContainFile) { fileList.add(file); }} }//end of while inZip.close(); return fileList; }? /** * 返回压缩包中的文件InputStream * * @param zipFilePath压缩文件的名字 * @param fileString解压文件的名字 * @return InputStream * @throws Exception */public static java.io.InputStream upZip(String zipFilePath, String fileString)throws Exception {java.util.zip.ZipFile zipFile = new java.util.zip.ZipFile(zipFilePath);java.util.zip.ZipEntry zipEntry = zipFile.getEntry(fileString);?return zipFile.getInputStream(zipEntry);}?/** * 解压一个压缩文档 到指定位置 * @param zipFileString压缩包的名字 * @param outPathString指定的路径 * @throws Exception */public static void unZipFolder(InputStream input, String outPathString)throws Exception {java.util.zip.ZipInputStream inZip = new java.util.zip.ZipInputStream(input);java.util.zip.ZipEntry zipEntry = null;String szName = "";?while ((zipEntry = inZip.getNextEntry()) != null) {szName = zipEntry.getName();?if (zipEntry.isDirectory()) { // get the folder name of the widget szName = szName.substring(0, szName.length() - 1); java.io.File folder = new java.io.File(outPathString + java.io.File.separator + szName); folder.mkdirs();} else { java.io.File file = new java.io.File(outPathString + java.io.File.separator + szName); file.createNewFile(); // get the output stream of the file java.io.FileOutputStream out = new java.io.FileOutputStream(file); int len; byte[] buffer = new byte[1024]; // read (len) bytes into buffer while ((len = inZip.read(buffer)) != -1) {// write (len) byte from buffer at the position 0out.write(buffer, 0, len);out.flush(); } out.close();}}//end of whileinZip.close();}?/** * 解压一个压缩文档 到指定位置 * @param zipFileString压缩包的名字 * @param outPathString指定的路径 * @throws Exception */public static void unZipFolder(String zipFileString, String outPathString)throws Exception {unZipFolder(new java.io.FileInputStream(zipFileString),outPathString);}//end of func??/** * 压缩文件,文件夹 * * @param srcFilePath要压缩的文件/文件夹名字 * @param zipFilePath指定压缩的目的和名字 * @throws Exception */public static void zipFolder(String srcFilePath, String zipFilePath)throws Exception { //创建Zip包 java.util.zip.ZipOutputStream outZip = new java.util.zip.ZipOutputStream(new java.io.FileOutputStream(zipFilePath));? //打开要输出的文件 java.io.File file = new java.io.File(srcFilePath);? //压缩 zipFiles(file.getParent()+java.io.File.separator, file.getName(), outZip);? //完成,关闭 outZip.finish(); outZip.close();? }//end of func?/** * 压缩文件 * @param folderPath * @param filePath * @param zipOut * @throws Exception */private static void zipFiles(String folderPath, String filePath, java.util.zip.ZipOutputStream zipOut)throws Exception{ if(zipOut == null){ return; }? java.io.File file = new java.io.File(folderPath+filePath);? //判断是不是文件 if (file.isFile()) { java.util.zip.ZipEntry zipEntry = new java.util.zip.ZipEntry(filePath); java.io.FileInputStream inputStream = new java.io.FileInputStream(file); zipOut.putNextEntry(zipEntry);? int len; byte[] buffer = new byte[4096];? while((len=inputStream.read(buffer)) != -1) { zipOut.write(buffer, 0, len); }? zipOut.closeEntry(); } else { //文件夹的方式,获取文件夹下的子文件 String fileList[] = file.list();? //如果没有子文件, 则添加进去即可 if (fileList.length <= 0) { java.util.zip.ZipEntry zipEntry = new java.util.zip.ZipEntry(filePath+java.io.File.separator);zipOut.putNextEntry(zipEntry);zipOut.closeEntry(); }? //如果有子文件, 遍历子文件 for (int i = 0; i < fileList.length; i++) {zipFiles(folderPath, filePath+java.io.File.separator+fileList[i], zipOut); }//end of for? }//end of if? }//end of func}?
文件下载 : ZipUtil.java.zip
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