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1 package com.utility.zip;  2    3 import java.io.BufferedInputStream;  4 import java.io.BufferedOutputStream;  5 import java.io.File;  6 import java.io.FileInputStream;  7 import java.io.FileOutputStream;  8 import java.io.IOException;  9 import java.util.zip.ZipEntry; 10 import java.util.zip.ZipInputStream; 11 import java.util.zip.ZipOutputStream; 12   13 import com.utility.io.IOUtil; 14   15 /** 16  * 通过Java的Zip输入输出流实现压缩和解压文件 17  *  18  * @author liujiduo 19  *  20  */ 21 public final class ZipUtil { 22   23     private ZipUtil() { 24         // empty 25     } 26   27     /** 28      * 压缩文件 29      *  30      * @param filePath 31      *            待压缩的文件路径 32      * @return 压缩后的文件 33      */ 34     public static File zip(String filePath) { 35         File target = null; 36         File source = new File(filePath); 37         if (source.exists()) { 38             // 压缩文件名=源文件名.zip 39             String zipName = source.getName() + ".zip"; 40             target = new File(source.getParent(), zipName); 41             if (target.exists()) { 42                 target.delete(); // 删除旧的文件 43             } 44             FileOutputStream fos = null; 45             ZipOutputStream zos = null; 46             try { 47                 fos = new FileOutputStream(target); 48                 zos = new ZipOutputStream(new BufferedOutputStream(fos)); 49                 // 添加对应的文件Entry 50                 addEntry("/", source, zos); 51             } catch (IOException e) { 52                 throw new RuntimeException(e); 53             } finally { 54                 IOUtil.closeQuietly(zos, fos); 55             } 56         } 57         return target; 58     } 59   60     /** 61      * 扫描添加文件Entry 62      *  63      * @param base 64      *            基路径 65      *  66      * @param source 67      *            源文件 68      * @param zos 69      *            Zip文件输出流 70      * @throws IOException 71      */ 72     private static void addEntry(String base, File source, ZipOutputStream zos) 73             throws IOException { 74         // 按目录分级，形如：/aaa/bbb.txt 75         String entry = base + source.getName(); 76         if (source.isDirectory()) { 77             for (File file : source.listFiles()) { 78                 // 递归列出目录下的所有文件，添加文件Entry 79                 addEntry(entry + "/", file, zos); 80             } 81         } else { 82             FileInputStream fis = null; 83             BufferedInputStream bis = null; 84             try { 85                 byte[] buffer = new byte[1024 * 10]; 86                 fis = new FileInputStream(source); 87                 bis = new BufferedInputStream(fis, buffer.length); 88                 int read = 0; 89                 zos.putNextEntry(new ZipEntry(entry)); 90                 while ((read = bis.read(buffer, 0, buffer.length)) != -1) { 91                     zos.write(buffer, 0, read); 92                 } 93                 zos.closeEntry(); 94             } finally { 95                 IOUtil.closeQuietly(bis, fis); 96             } 97         } 98     } 99  100     /**101      * 解压文件102      * 103      * @param filePath104      *            压缩文件路径105      */106     public static void unzip(String filePath) {107         File source = new File(filePath);108         if (source.exists()) {109             ZipInputStream zis = null;110             BufferedOutputStream bos = null;111             try {112                 zis = new ZipInputStream(new FileInputStream(source));113                 ZipEntry entry = null;114                 while ((entry = zis.getNextEntry()) != null115                         && !entry.isDirectory()) {116                     File target = new File(source.getParent(), entry.getName());117                     if (!target.getParentFile().exists()) {118                         // 创建文件父目录119                         target.getParentFile().mkdirs();120                     }121                     // 写入文件122                     bos = new BufferedOutputStream(new FileOutputStream(target));123                     int read = 0;124                     byte[] buffer = new byte[1024 * 10];125                     while ((read = zis.read(buffer, 0, buffer.length)) != -1) {126                         bos.write(buffer, 0, read);127                     }128                     bos.flush();129                 }130                 zis.closeEntry();131             } catch (IOException e) {132                 throw new RuntimeException(e);133             } finally {134                 IOUtil.closeQuietly(zis, bos);135             }136         }137     }138  139     public static void main(String[] args) {140         String targetPath = "E:\\Win7壁纸";141         File file = ZipUtil.zip(targetPath);142         System.out.println(file);143         ZipUtil.unzip("F:\\Win7壁纸.zip");144     }145 }

1 package com.utility.io; 2   3 import java.io.Closeable; 4 import java.io.IOException; 5   6 /** 7  * IO流工具类 8  *  9  * @author liujiduo10  * 11  */12 public class IOUtil {13     /**14      * 关闭一个或多个流对象15      * 16      * @param closeables17      *            可关闭的流对象列表18      * @throws IOException19      */20     public static void close(Closeable... closeables) throws IOException {21         if (closeables != null) {22             for (Closeable closeable : closeables) {23                 if (closeable != null) {24                     closeable.close();25                 }26             }27         }28     }29  30     /**31      * 关闭一个或多个流对象32      * 33      * @param closeables34      *            可关闭的流对象列表35      */36     public static void closeQuietly(Closeable... closeables) {37         try {38             close(closeables);39         } catch (IOException e) {40             // do nothing41         }42     }43  44 }

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