java 压缩文件夹成zip格式

星期五, 2016-11-18 | Author: Lee | JAVA-and-J2EE | 123 views

想用java 自动打包文件,由此来的此代码

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
 
package com.i5a6.util;
 
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.CRC32;
import java.util.zip.CheckedOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
 
/**
 * Copyright © 2016 i5a6.com. All rights reserved.
 * 
 * @author: Lee
 * @date: 2016年11月18日 上午9:49:23
 */
public class PublicDevTo {
 
	private static File zipFile;
	static final int BUFFER = 8192;
 
	public static void main(String[] args) throws Exception {
 
		zipFile = new File("d:/zip/i5a6.zip");
		String path = "D:/public-do/i5a6/";
		compress(path);
	}
 
	public static void compress(String... pathName) {
		ZipOutputStream out = null;
		try {
			FileOutputStream fileOutputStream = new FileOutputStream(zipFile);
			CheckedOutputStream cos = new CheckedOutputStream(fileOutputStream, new CRC32());
			out = new ZipOutputStream(cos);
			String basedir = "";
			for (int i = 0; i < pathName.length; i++) {
				compress(new File(pathName[i]), out, basedir);
			}
			out.close();
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}
 
	public static void compress(String srcPathName) {
		File file = new File(srcPathName);
		if (!file.exists())
			throw new RuntimeException(srcPathName + "不存在!");
		try {
			FileOutputStream fileOutputStream = new FileOutputStream(zipFile);
			CheckedOutputStream cos = new CheckedOutputStream(fileOutputStream, new CRC32());
			ZipOutputStream out = new ZipOutputStream(cos);
			String basedir = "";
			compress(file, out, basedir);
			out.close();
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}
 
	private static void compress(File file, ZipOutputStream out, String basedir) {
		/* 判断是目录还是文件 */
		if (file.isDirectory()) {
			System.out.println("压缩:" + basedir + file.getName());
			compressDirectory(file, out, basedir);
		} else {
			System.out.println("压缩:" + basedir + file.getName());
			compressFile(file, out, basedir);
		}
	}
 
	/** 压缩一个目录 */
	private static void compressDirectory(File dir, ZipOutputStream out, String basedir) {
		if (!dir.exists())
			return;
 
		File[] files = dir.listFiles();
		for (int i = 0; i < files.length; i++) {
			/* 递归 */
			compress(files[i], out, basedir + dir.getName() + "/");
		}
	}
 
	/** 压缩一个文件 */
	private static void compressFile(File file, ZipOutputStream out, String basedir) {
		if (!file.exists()) {
			return;
		}
		try {
			BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
			ZipEntry entry = new ZipEntry(basedir + file.getName());
			out.putNextEntry(entry);
			int count;
			byte data[] = new byte[BUFFER];
			while ((count = bis.read(data, 0, BUFFER)) != -1) {
				out.write(data, 0, count);
			}
			bis.close();
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}
 
}

更多的封装自己调整

Tags: ,

文章作者: Lee

本文地址: http://blog.i5a6.com/1634.html

除非注明,I5A6文章均为原创,转载请以链接形式标明本文地址

还没有评论呢。

留下评论

Rss

Search

文章分类

Meta