zip解压(解决中文乱码) JavaApachelog4jGmailGoogle
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2024-02-26 11:40:16
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本文来源:http://code.google.com/p/javawing/source/browse/trunk/Utils/src/org/javawing/util/ZipUtil.java?r=63
/** * $Log: ZipCompress.java,v $ */ package org.javawing.util; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.util.Enumeration; import java.util.zip.CRC32; import java.util.zip.CheckedOutputStream; import java.util.zip.Deflater; import java.util.zip.ZipException; import org.apache.log4j.Logger; import org.apache.tools.zip.ZipEntry; import org.apache.tools.zip.ZipFile; import org.apache.tools.zip.ZipOutputStream; /** * @brief * <p><b>Zip file tool class</b></p> * * compress and decompress file * * <p><center>COPYRIGHT (C) 2009,RiseTek Systems Inc.All Rights Reserved.</center></p> * @author TangJian * @version 1.0 * @see * @since 2009-12-10 */ public class ZipUtil { private static boolean isCreateSrcDir = false;//是否创建源目录 private static Logger log = Logger.getLogger(ZipUtil.class.getName()); /** * @param args * @throws IOException */ public static void main(String[] args) throws IOException { String src = "e:/temp/src";//指定压缩源,可以是目录或文件 String decompressDir = "e:/temp/decompress";//解压路径 String archive = "e:/temp/test.wid";//压缩包路径 String comment = "Java Zip semiwolf@gmail.com";//压缩包注释 //----压缩文件或目录 writeByApacheZipOutputStream(src, archive, comment); //----使用apace ZipFile读取压缩文件 readByApacheZipFile(archive, decompressDir); // File file = new File(archive); // readByApacheZipFile(file, decompressDir); } public static void writeByApacheZipOutputStream(String src, String archive, String comment) throws FileNotFoundException, IOException { //----压缩文件: FileOutputStream f = new FileOutputStream(archive); //使用指定校验和创建输出流 CheckedOutputStream csum = new CheckedOutputStream(f, new CRC32()); ZipOutputStream zos = new ZipOutputStream(csum); //支持中文 zos.setEncoding("GBK"); BufferedOutputStream out = new BufferedOutputStream(zos); //设置压缩包注释 zos.setComment(comment); //启用压缩 zos.setMethod(ZipOutputStream.DEFLATED); //压缩级别为最强压缩,但时间要花得多一点 zos.setLevel(Deflater.BEST_COMPRESSION); File srcFile = new File(src); if (!srcFile.exists() || (srcFile.isDirectory() && srcFile.list().length == 0)) { throw new FileNotFoundException( "File must exist and ZIP file must have at least one entry."); } //获取压缩源所在父目录 src = src.replaceAll("\\\\", "/"); String prefixDir = null; if (srcFile.isFile()) { prefixDir = src.substring(0, src.lastIndexOf("/") + 1); } else { prefixDir = (src.replaceAll("/$", "") + "/"); } //如果不是根目录 if (prefixDir.indexOf("/") != (prefixDir.length() - 1) && isCreateSrcDir) { prefixDir = prefixDir.replaceAll("[^/]+/$", ""); } //开始压缩 writeRecursive(zos, out, srcFile, prefixDir); out.close(); // 注:校验和要在流关闭后才准备,一定要放在流被关闭后使用 log.info("Checksum: " + csum.getChecksum().getValue()); } public static void readByApacheZipFile(File file, String decompressDir) throws IOException, FileNotFoundException, ZipException { ZipFile zf = new ZipFile(file, "GBK");// 支持中文 readByApacheZipFile(decompressDir, zf); } /** * 使用 org.apache.tools.zip.ZipFile 解压文件,它与 java 类库中的 * java.util.zip.ZipFile 使用方式是一致的,只不过多了设置编码方式的 * 接口。 * * 注,apache 没有提供 ZipInputStream 类,所以只能使用它提供的ZipFile * 来读取压缩文件。 * @param archive 压缩包路径 * @param decompressDir 解压路径 * @throws IOException * @throws FileNotFoundException * @throws ZipException */ public static void readByApacheZipFile(String archive, String decompressDir) throws IOException, FileNotFoundException, ZipException { ZipFile zf = new ZipFile(archive, "GBK");//支持中文 readByApacheZipFile(decompressDir, zf); } /** * @brief * main extract method * * @param decompressDir * @param zf * @throws FileNotFoundException * @throws IOException * @throws ZipException */ private static void readByApacheZipFile(String decompressDir, ZipFile zf) throws FileNotFoundException, IOException, ZipException { BufferedInputStream bi; Enumeration<?> e = zf.getEntries(); while (e.hasMoreElements()) { ZipEntry ze2 = (ZipEntry) e.nextElement(); String entryName = ze2.getName(); String path = decompressDir + "/" + entryName; if (ze2.isDirectory()) { log.info("正在创建解压目录 - " + entryName); File decompressDirFile = new File(path); if (!decompressDirFile.exists()) { decompressDirFile.mkdirs(); } } else { log.info("正在创建解压文件 - " + entryName); String fileDir = path.substring(0, path.lastIndexOf("/")); File fileDirFile = new File(fileDir); if (!fileDirFile.exists()) { fileDirFile.mkdirs(); } BufferedOutputStream bos = new BufferedOutputStream( new FileOutputStream(decompressDir + "/" + entryName)); bi = new BufferedInputStream(zf.getInputStream(ze2)); byte[] readContent = new byte[1024]; int readCount = bi.read(readContent); while (readCount != -1) { //解压对文件二进制加密 bos.write(readContent, 0, readCount); readCount = bi.read(readContent); } bos.close(); } } zf.close(); } /** * 递归压缩 * * 使用 org.apache.tools.zip.ZipOutputStream 类进行压缩,它的好处就是支持中文路径, * 而Java类库中的 java.util.zip.ZipOutputStream 压缩中文文件名时压缩包会出现乱码。 * 使用 apache 中的这个类与 java 类库中的用法是一新的,只是能设置编码方式了。 * * @param zos * @param bo * @param srcFile * @param prefixDir * @throws IOException * @throws FileNotFoundException */ private static void writeRecursive(ZipOutputStream zos, BufferedOutputStream bo, File srcFile, String prefixDir) throws IOException, FileNotFoundException { ZipEntry zipEntry; String filePath = srcFile.getAbsolutePath().replaceAll("\\\\", "/").replaceAll( "//", "/"); if (srcFile.isDirectory()) { filePath = filePath.replaceAll("/$", "") + "/"; } String entryName = filePath.replace(prefixDir, "").replaceAll("/$", ""); if (srcFile.isDirectory()) { if (!"".equals(entryName)) { log.info("正在创建目录 - " + srcFile.getAbsolutePath() + " entryName=" + entryName); //如果是目录,则需要在写目录后面加上 / zipEntry = new ZipEntry(entryName + "/"); zos.putNextEntry(zipEntry); } File srcFiles[] = srcFile.listFiles(); for (int i = 0; i < srcFiles.length; i++) { writeRecursive(zos, bo, srcFiles[i], prefixDir); } } else { log.info("正在写文件 - " + srcFile.getAbsolutePath() + " entryName=" + entryName); BufferedInputStream bi = new BufferedInputStream(new FileInputStream(srcFile)); //开始写入新的ZIP文件条目并将流定位到条目数据的开始处 zipEntry = new ZipEntry(entryName); zos.putNextEntry(zipEntry); byte[] buffer = new byte[1024]; int readCount = bi.read(buffer); while (readCount != -1) { bo.write(buffer, 0, readCount); readCount = bi.read(buffer); } //注,在使用缓冲流写压缩文件时,一个条件完后一定要刷新一把,不 //然可能有的内容就会存入到后面条目中去了 bo.flush(); //文件读完后关闭 bi.close(); } } }
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