ZIP file decompression (supports Chinese file names)

The file must be supported by the ant. jar package.

1. Package com. amarsoft. CEB. util;
2. Import java. Io .*;
3. Import java. util. arraylist;
4. Import java. util. enumeration;
5. Import org.apache.tools.zip. zipentry;
6. Import org.apache.tools.zip. zipfile;
8. Public class ziptools {
9. Private arraylist list = new arraylist (); // stores the extracted file name
10. /**
11. * Generate the file path
12. * 1. If the sub-file is empty and the directory does not exist, create a directory
13. * 2. If directory and subdirectory are not empty, press d to create a directory.
14. * @ Param directory
15. * @ Param subdirectory
16. */
17. Private void createdirectory (string directory, string subdirectory ){
18. String dir [];
19. File FL = new file (directory );
20. Try {
21. If (subdirectory. Equals ("") & FL. exists () = false ){
22. Fl. mkdir ();
23. } Else if (! Subdirectory. Equals ("")){
24. Dir = subdirectory. Replace ('/', '/'). Split ("/");
25. For (INT I = 0; I <dir. length; I ++ ){
26. File subfile = new file (directory + file. Separator + dir [I]);
27. If (subfile. exists () = false) subfile. mkdir ();
28. Directory + = file. Separator + dir [I];
29. }
30. }
31. }
32. Catch (exception ex ){
33. System. Out. println (ex. getmessage ());
34. }
35. }
37. /**
38. *
39. * @ Param zipfilename ZIP file name
40. * @ Param outputdirectory: output directory
41. * @ Return array (two elements). The first table indicates the unzipping flag, and the second is the message.
42. * @ Throws exception
43. */
44. Public String [] unzip (string zipfilename, string outputdirectory ){
45. String [] sreturn = new string [2];
46. Boolean readflag = false; // read the file ID to prevent Empty files from being decompressed.
47. Try {
48. Zipfile = new zipfile (zipfilename );
49. Enumeration E = zipfile. getentries ();
51. Zipentry = NULL;
52. Createdirectory (outputdirectory, ""); // generate the output directory
53. While (E. hasmoreelements () {// if there is a file in the compressed file, decompress
54. String upzipedfilename;
55. Readflag = true;
56. Zipentry = (zipentry) E. nextelement ();
57. Upzipedfilename = zipentry. getname ();
58. System. Out. println ("unziping:" + upzipedfilename );
59. List. Add (upzipedfilename); // put the file name in a list for return calls.
60. If (zipentry. isdirectory () {// if it is a directory, create it
61. String name = zipentry. getname ();
62. Name = Name. substring (0, name. Length ()-1 );
63. File F = new file (outputdirectory + file. Separator + name );
64. F. mkdir ();
65. System. Out. println ("create directory:" + outputdirectory + file. Separator + name );
66. } Else {
67. String filename = zipentry. getname ();
68. Filename = filename. Replace ('//','/');
69. If (filename. indexof ("/")! =-1 ){
70. Createdirectory (outputdirectory, filename. substring (0, filename. lastindexof ("/")));
71. Filename = filename. substring (filename. lastindexof ("/") + 1, filename. Length ());
72. }
74. File F = new file (outputdirectory + file. Separator + zipentry. getname ());
75. F. createnewfile ();
76. Inputstream in = zipfile. getinputstream (zipentry );
77. Fileoutputstream out = new fileoutputstream (f );
79. Byte [] by = new byte [1024];
80. Int C;
81. While (C = in. Read ())! =-1 ){
82. Out. Write (by, 0, C );
83. }
84. Out. Close ();
85. In. Close ();
86. }
87. }
88. If (readflag) {// determine whether there are files in the zip package
89. Sreturn [0] = "1 ";
90. Sreturn [1] = "successful ";
91. } Else {
92. Sreturn [0] = "0 ";
93. Sreturn [1] = "no file exists in the zip package ";
94. }
95. } Catch (exception ex ){
96. Sreturn [0] = "0 ";
97. Sreturn [1] = ex. getmessage ();
98. }
99. Return sreturn;
100. }
101. Public arraylist getfilenames (){
102. Return list;
103. }
104. ///**
105. // * Test Method
106. // * @ Param ARGs
107. //*/
108. // Public static void main (string [] ARGs ){
109. // String szipfilename = "D: // parttest.zip ";
110. // String sdirectory = "D: // tmp ";
111. // String sflag = "";
112. // String MSG = "";
113. // String [] sreturn;
114. // Ziptools DBC = new ziptools ();
115. // System. Out. println ("message: start extracting ......");
116. // Sreturn = DBC. Unzip (szipfilename, sdirectory );
117. // Sflag = sreturn [0];
118. // MSG = sreturn [1];
119. // If (sflag. Equals ("1 ")){
120. // System. Out. println ("message: decompressed successfully ");
121. //} Else if (sflag. Equals ("0 ")){
122. // System. Out. println ("message: Decompression failed ");
123. // System. Out. println ("Reason:" + MSG );
124. //}
125. //
126. //}
127. }