JAVA兑现实用的ZIP压缩与解压

JAVA实现实用的ZIP压缩与解压

程序实现了ZIP压缩。共分为2部分 ： 压缩（compression）与解压（decompression）

大致功能包括用了多态，递归等JAVA核心技术，可以对单个文件和任意级联文件夹进行压缩和解压。 需在代码中自定义源输入路径和目标输出路径。?

1. package?com.han;??
2. ??
3. import?java.io.*;??
4. import?java.util.zip.*;??
5. ??
6. /**?
7. ?*?程序实现了ZIP压缩。共分为2部分?：?压缩（compression）与解压（decompression）?
8. ?*?<p>?
9. ?*?大致功能包括用了多态，递归等JAVA核心技术，可以对单个文件和任意级联文件夹进行压缩和解压。?需在代码中自定义源输入路径和目标输出路径。?
10. ?*?<p>?
11. ?*?在本段代码中，实现的是压缩部分；解压部分见本包中Decompression部分。?
12. ?*??
13. ?*?@author?HAN?
14. ?*??
15. ?*/??
16. ??
17. public?class?MyZipCompressing?{??
18. ????private?int?k?=?1;?//?定义递归次数变量??
19. ??
20. ????public?MyZipCompressing()?{??
21. ????????//?TODO?Auto-generated?constructor?stub??
22. ????}??
23. ??
24. ????/**?
25. ?????*?@param?args?
26. ?????*/??
27. ????public?static?void?main(String[]?args)?{??
28. ????????//?TODO?Auto-generated?method?stub??
29. ????????MyZipCompressing?book?=?new?MyZipCompressing();??
30. ????????try?{??
31. ????????????book.zip("C:\\Users\\Gaowen\\Desktop\\ZipTestCompressing.zip",??
32. ????????????????????new?File("C:\\Users\\Gaowen\\Documents\\Tencent?Files"));??
33. ????????}?catch?(Exception?e)?{??
34. ????????????//?TODO?Auto-generated?catch?block??
35. ????????????e.printStackTrace();??
36. ????????}??
37. ??
38. ????}??
39. ??
40. ????private?void?zip(String?zipFileName,?File?inputFile)?throws?Exception?{??
41. ????????System.out.println("压缩中...");??
42. ????????ZipOutputStream?out?=?new?ZipOutputStream(new?FileOutputStream(??
43. ????????????????zipFileName));??
44. ????????BufferedOutputStream?bo?=?new?BufferedOutputStream(out);??
45. ????????zip(out,?inputFile,?inputFile.getName(),?bo);??
46. ????????bo.close();??
47. ????????out.close();?//?输出流关闭??
48. ????????System.out.println("压缩完成");??
49. ????}??
50. ??
51. ????private?void?zip(ZipOutputStream?out,?File?f,?String?base,??
52. ????????????BufferedOutputStream?bo)?throws?Exception?{?//?方法重载??
53. ????????if?(f.isDirectory())?{??
54. ????????????File[]?fl?=?f.listFiles();??
55. ????????????if?(fl.length?==?0)?{??
56. ????????????????out.putNextEntry(new?ZipEntry(base?+?"/"));?//?创建zip压缩进入点base??
57. ????????????????System.out.println(base?+?"/");??
58. ????????????}??
59. ????????????for?(int?i?=?0;?i?<?fl.length;?i++)?{??
60. ????????????????zip(out,?fl[i],?base?+?"/"?+?fl[i].getName(),?bo);?//?递归遍历子文件夹??
61. ????????????}??
62. ????????????System.out.println("第"?+?k?+?"次递归");??
63. ????????????k++;??
64. ????????}?else?{??
65. ????????????out.putNextEntry(new?ZipEntry(base));?//?创建zip压缩进入点base??
66. ????????????System.out.println(base);??
67. ????????????FileInputStream?in?=?new?FileInputStream(f);??
68. ????????????BufferedInputStream?bi?=?new?BufferedInputStream(in);??
69. ????????????int?b;??
70. ????????????while?((b?=?bi.read())?!=?-1)?{??
71. ????????????????bo.write(b);?//?将字节流写入当前zip目录??
72. ????????????}??
73. ????????????bi.close();??
74. ????????????in.close();?//?输入流关闭??
75. ????????}??
76. ????}??
77. }??

?

1. package?com.han;??
2. ??
3. import?java.io.*;??
4. import?java.util.zip.*;??
5. /**?
6. ?*?程序实现了ZIP压缩。共分为2部分?：?
7. ?*?压缩（compression）与解压（decompression）?
8. ?*?<p>?
9. ?*?大致功能包括用了多态，递归等JAVA核心技术，可以对单个文件和任意级联文件夹进行压缩和解压。?
10. ?*?需在代码中自定义源输入路径和目标输出路径。?
11. ?*?<p>?
12. ?*?在本段代码中，实现的是解压部分；压缩部分见本包中compression部分。?
13. ?*?@author?HAN?
14. ?*?
15. ?*/??
16. public?class?CopyOfMyzipDecompressing?{??
17. ??????
18. ????public?static?void?main(String[]?args)?{??
19. ????????//?TODO?Auto-generated?method?stub??
20. ????????long?startTime=System.currentTimeMillis();??
21. ????????try?{??
22. ????????????ZipInputStream?Zin=new?ZipInputStream(new?FileInputStream(??
23. ????????????????????"C:\\Users\\HAN\\Desktop\\stock\\SpectreCompressed.zip"));//输入源zip路径??
24. ????????????BufferedInputStream?Bin=new?BufferedInputStream(Zin);??
25. ????????????String?Parent="C:\\Users\\HAN\\Desktop";?//输出路径（文件夹目录）??
26. ????????????File?Fout=null;??
27. ????????????ZipEntry?entry;??
28. ????????????try?{??
29. ????????????????while((entry?=?Zin.getNextEntry())!=null?&&?!entry.isDirectory()){??
30. ????????????????????Fout=new?File(Parent,entry.getName());??
31. ????????????????????if(!Fout.exists()){??
32. ????????????????????????(new?File(Fout.getParent())).mkdirs();??
33. ????????????????????}??
34. ????????????????????FileOutputStream?out=new?FileOutputStream(Fout);??
35. ????????????????????BufferedOutputStream?Bout=new?BufferedOutputStream(out);??
36. ????????????????????int?b;??
37. ????????????????????while((b=Bin.read())!=-1){??
38. ????????????????????????Bout.write(b);??
39. ????????????????????}??
40. ????????????????????Bout.close();??
41. ????????????????????out.close();??
42. ????????????????????System.out.println(Fout+"解压成功");??????
43. ????????????????}??
44. ????????????????Bin.close();??
45. ????????????????Zin.close();??
46. ????????????}?catch?(IOException?e)?{??
47. ????????????????//?TODO?Auto-generated?catch?block??
48. ????????????????e.printStackTrace();??
49. ????????????}??
50. ????????}?catch?(FileNotFoundException?e)?{??
51. ????????????//?TODO?Auto-generated?catch?block??
52. ????????????e.printStackTrace();??
53. ????????}??
54. ????????long?endTime=System.currentTimeMillis();??
55. ????????System.out.println("耗费时间：?"+(endTime-startTime)+"?ms");??
56. ????}??
57. ??
58. } ?