使用org.apache.tools.zip实现zip压缩和解压
1 import java.io.*;2 import org.apache.tools.zip.*;
3 import java.util.Enumeration;
4 /**
5 *功能:zip压缩、解压(支持中文文件名)
6 *说明:本程序通过使用Apache Ant里提供的zip工具org.apache.tools.zip实现了zip压缩和解压功能.
7 * 解决了由于java.util.zip包不支持汉字的问题。
8 * 使用java.util.zip包时,当zip文件中有名字为中文的文件时,
9 * 就会出现异常:"Exceptionin thread "main " java.lang.IllegalArgumentException
10 * at java.util.zip.ZipInputStream.getUTF8String(ZipInputStream.java:285)
11 *注意:
12 * 1、使用时把ant.jar放到classpath中,程序中使用import org.apache.tools.zip.*;
13 * 2、Apache Ant 下载地址:http://ant.apache.org/
14 * 3、Ant ZIP API:http://www.jajakarta.org/ant/ant-1.6.1/docs/mix/manual/api/org/apache/tools/zip/
15 * 4、本程序使用Ant 1.7.1 中的ant.jar
16 *
17 *仅供编程学习参考.
18 *
19 *@author Winty
20 *@date 2008-8-3
21 *@Usage:
22 * 压缩:java AntZip -zip "directoryName"
23 * 解压:java AntZip -unzip "fileName.zip"
24 */
25
26 public class AntZip{
27 private ZipFile zipFile;
28 private ZipOutputStream zipOut; //压缩Zip
29 private ZipEntry zipEntry;
30 private static int bufSize; //size of bytes
31 private byte[] buf;
32 private int readedBytes;
33
34 public AntZip(){
35 this(512);
36 }
37
38 public AntZip(int bufSize){
39 this.bufSize = bufSize;
40 this.buf = new byte;
41 }
42
43 //压缩文件夹内的文件
44 public void doZip(String zipDirectory){//zipDirectoryPath:需要压缩的文件夹名
45 File file;
46 File zipDir;
47
48 zipDir = new File(zipDirectory);
49 String zipFileName = zipDir.getName() + ".zip";//压缩后生成的zip文件名
50
51 try{
52 this.zipOut = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(zipFileName)));
53 handleDir(zipDir , this.zipOut);
54 this.zipOut.close();
55 }catch(IOException ioe){
56 ioe.printStackTrace();
57 }
58 }
59
60 //由doZip调用,递归完成目录文件读取
61 private void handleDir(File dir , ZipOutputStream zipOut)throws IOException{
62 FileInputStream fileIn;
63 File[] files;
64
65 files = dir.listFiles();
66
67 if(files.length == 0){//如果目录为空,则单独创建之.
68 //ZipEntry的isDirectory()方法中,目录以"/"结尾.
69 this.zipOut.putNextEntry(new ZipEntry(dir.toString() + "/"));
70 this.zipOut.closeEntry();
71 }
72 else{//如果目录不为空,则分别处理目录和文件.
73 for(File fileName : files){
74 //System.out.println(fileName);
75
76 if(fileName.isDirectory()){
77 handleDir(fileName , this.zipOut);
78 }
79 else{
80 fileIn = new FileInputStream(fileName);
81 this.zipOut.putNextEntry(new ZipEntry(fileName.toString()));
82
83 while((this.readedBytes = fileIn.read(this.buf))>0){
84 this.zipOut.write(this.buf , 0 , this.readedBytes);
85 }
86
87 this.zipOut.closeEntry();
88 }
89 }
90 }
91 }
92
93 //解压指定zip文件
94 public void unZip(String unZipfileName){//unZipfileName需要解压的zip文件名
95 FileOutputStream fileOut;
96 File file;
97 InputStream inputStream;
98
99 try{
100 this.zipFile = new ZipFile(unZipfileName);
101
102 for(Enumeration entries = this.zipFile.getEntries(); entries.hasMoreElements();){
103 ZipEntry entry = (ZipEntry)entries.nextElement();
104 file = new File(entry.getName());
105
106 if(entry.isDirectory()){
107 file.mkdirs();
108 }
109 else{
110 //如果指定文件的目录不存在,则创建之.
111 File parent = file.getParentFile();
112 if(!parent.exists()){
113 parent.mkdirs();
114 }
115
116 inputStream = zipFile.getInputStream(entry);
117
118 fileOut = new FileOutputStream(file);
119 while(( this.readedBytes = inputStream.read(this.buf) ) > 0){
120 fileOut.write(this.buf , 0 , this.readedBytes );
121 }
122 fileOut.close();
123
124 inputStream.close();
125 }
126 }
127 this.zipFile.close();
128 }catch(IOException ioe){
129 ioe.printStackTrace();
130 }
131 }
132
133 //设置缓冲区大小
134 public void setBufSize(int bufSize){
135 this.bufSize = bufSize;
136 }
137
138 //测试AntZip类
139 public static void main(String[] args)throws Exception{
140 if(args.length==2){
141 String name = args;
142 AntZip zip = new AntZip();
143
144 if(args.equals("-zip"))
145 zip.doZip(name);
146 else if(args.equals("-unzip"))
147 zip.unZip(name);
148 }
149 else{
150 System.out.println("Usage:");
151 System.out.println("压缩:java AntZip -zip directoryName");
152 System.out.println("解压:java AntZip -unzip fileName.zip");
153 throw new Exception("Arguments error!");
154 }
155 }
156 }
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