java zip API实现压缩和解压缩zip包

package zip;import java.io.BufferedInputStream;import java.io.BufferedOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.util.Enumeration;import java.util.zip.CRC32;import java.util.zip.CheckedOutputStream;import java.util.zip.ZipEntry;import java.util.zip.ZipFile;import java.util.zip.ZipOutputStream;import org.apache.commons.lang3.StringUtils;public class ZipUtil {/** * 递归压缩文件夹 * @param srcRootDir 压缩文件夹根目录的子路径 * @param file 当前递归压缩的文件或目录对象 * @param zos 压缩文件存储对象 * @throws Exception */private static void zip(String srcRootDir, File file, ZipOutputStream zos) throws Exception{if (file == null) {return;}//如果是文件，则直接压缩该文件if (file.isFile()){int count, bufferLen = 1024;byte data[] = new byte[bufferLen];//获取文件相对于压缩文件夹根目录的子路径String subPath = file.getAbsolutePath();int index = subPath.indexOf(srcRootDir);if (index != -1) {subPath = subPath.substring(srcRootDir.length() + File.separator.length());}ZipEntry entry = new ZipEntry(subPath);zos.putNextEntry(entry);BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));while ((count = bis.read(data, 0, bufferLen)) != -1) {zos.write(data, 0, count);}bis.close();zos.closeEntry();}//如果是目录，则压缩整个目录else {//压缩目录中的文件或子目录File[] childFileList = file.listFiles();for (int n=0; n<childFileList.length; n++){childFileList[n].getAbsolutePath().indexOf(file.getAbsolutePath());zip(srcRootDir, childFileList[n], zos);}}}/** * 对文件或文件目录进行压缩 * @param srcPath 要压缩的源文件路径。如果压缩一个文件，则为该文件的全路径；如果压缩一个目录，则为该目录的顶层目录路径 * @param zipPath 压缩文件保存的路径。注意：zipPath不能是srcPath路径下的子文件夹 * @param zipFileName 压缩文件名 * @throws Exception */public static void zip(String srcPath, String zipPath, String zipFileName) throws Exception{if (StringUtils.isEmpty(srcPath) || StringUtils.isEmpty(zipPath) || StringUtils.isEmpty(zipFileName)){throw new ParameterException(ICommonResultCode.PARAMETER_IS_NULL);}CheckedOutputStream cos = null;ZipOutputStream zos = null;try{File srcFile = new File(srcPath);//判断压缩文件保存的路径是否为源文件路径的子文件夹，如果是，则抛出异常（防止无限递归压缩的发生）if (srcFile.isDirectory() && zipPath.indexOf(srcPath)!=-1) {throw new ParameterException(ICommonResultCode.INVALID_PARAMETER, "zipPath must not be the child directory of srcPath.");}//判断压缩文件保存的路径是否存在，如果不存在，则创建目录File zipDir = new File(zipPath);if (!zipDir.exists() || !zipDir.isDirectory()){zipDir.mkdirs();}//创建压缩文件保存的文件对象String zipFilePath = zipPath + File.separator + zipFileName;File zipFile = new File(zipFilePath);if (zipFile.exists()){//检测文件是否允许删除，如果不允许删除，将会抛出SecurityExceptionSecurityManager securityManager = new SecurityManager();securityManager.checkDelete(zipFilePath);//删除已存在的目标文件zipFile.delete();}cos = new CheckedOutputStream(new FileOutputStream(zipFile), new CRC32());zos = new ZipOutputStream(cos);//如果只是压缩一个文件，则需要截取该文件的父目录String srcRootDir = srcPath;if (srcFile.isFile()){int index = srcPath.lastIndexOf(File.separator);if (index != -1){srcRootDir = srcPath.substring(0, index);}}//调用递归压缩方法进行目录或文件压缩zip(srcRootDir, srcFile, zos);zos.flush();}catch (Exception e) {throw e;}finally {try{if (zos != null){zos.close();}}catch (Exception e){e.printStackTrace();}}}/** * 解压缩zip包 * @param zipFilePath zip文件的全路径 * @param unzipFilePath 解压后的文件保存的路径 * @param includeZipFileName 解压后的文件保存的路径是否包含压缩文件的文件名。true-包含；false-不包含 */@SuppressWarnings("unchecked")public static void unzip(String zipFilePath, String unzipFilePath, boolean includeZipFileName) throws Exception{if (StringUtils.isEmpty(zipFilePath) || StringUtils.isEmpty(unzipFilePath)){throw new ParameterException(ICommonResultCode.PARAMETER_IS_NULL);}File zipFile = new File(zipFilePath);//如果解压后的文件保存路径包含压缩文件的文件名，则追加该文件名到解压路径if (includeZipFileName){String fileName = zipFile.getName();if (StringUtils.isNotEmpty(fileName)){fileName = fileName.substring(0, fileName.lastIndexOf("."));}unzipFilePath = unzipFilePath + File.separator + fileName;}//创建解压缩文件保存的路径File unzipFileDir = new File(unzipFilePath);if (!unzipFileDir.exists() || !unzipFileDir.isDirectory()){unzipFileDir.mkdirs();}//开始解压ZipEntry entry = null;String entryFilePath = null, entryDirPath = null;File entryFile = null, entryDir = null;int index = 0, count = 0, bufferSize = 1024;byte[] buffer = new byte[bufferSize];BufferedInputStream bis = null;BufferedOutputStream bos = null;ZipFile zip = new ZipFile(zipFile);Enumeration<ZipEntry> entries = (Enumeration<ZipEntry>)zip.entries();//循环对压缩包里的每一个文件进行解压while(entries.hasMoreElements()){entry = entries.nextElement();//构建压缩包中一个文件解压后保存的文件全路径entryFilePath = unzipFilePath + File.separator + entry.getName();//构建解压后保存的文件夹路径index = entryFilePath.lastIndexOf(File.separator);if (index != -1){entryDirPath = entryFilePath.substring(0, index);}else{entryDirPath = "";}entryDir = new File(entryDirPath);//如果文件夹路径不存在，则创建文件夹if (!entryDir.exists() || !entryDir.isDirectory()){entryDir.mkdirs();}//创建解压文件entryFile = new File(entryFilePath);if (entryFile.exists()){//检测文件是否允许删除，如果不允许删除，将会抛出SecurityExceptionSecurityManager securityManager = new SecurityManager();securityManager.checkDelete(entryFilePath);//删除已存在的目标文件entryFile.delete();}//写入文件bos = new BufferedOutputStream(new FileOutputStream(entryFile));bis = new BufferedInputStream(zip.getInputStream(entry));while ((count = bis.read(buffer, 0, bufferSize)) != -1){bos.write(buffer, 0, count);}bos.flush();bos.close();}}public static void main(String[] args) {String zipPath = "d:\\ziptest\\zipPath";String dir = "d:\\ziptest\\rawfiles";String zipFileName = "test.zip";try{zip(dir, zipPath, zipFileName);} catch (Exception e){e.printStackTrace();}String zipFilePath = "D:\\ziptest\\zipPath\\test.zip";String unzipFilePath = "D:\\ziptest\\zipPath";try {unzip(zipFilePath, unzipFilePath, true);}catch (Exception e){e.printStackTrace();}}}