设为首页收藏本站
开启辅助访问

在路上

 找回密码
 立即注册
在路上 › 站点首页 ›学习 › 查看内容

java zip 工具类

2016-12-20 13:16| 发布者: zhangjf| 查看: 651| 评论: 0

摘要: package com.topsoft.websites.utils; import java.io.*;import java.util.logging.Logger;import java.util.zip.*; /** * Created by sunyameng on 14-3-10. */public class ZipUtil { private final static L ...
  2. package com.topsoft.websites.utils;
  4. import java.io.*;
  5. import java.util.logging.Logger;
  6. import java.util.zip.*;
  8. /**
  9. * Created by sunyameng on 14-3-10.
  10. */
  11. public class ZipUtil {
  12. private final static Logger logger = Logger.getLogger(ZipUtil.class.getName());
  13. private static final int BUFFER = 1024 * 10;
  14. /**
  15. * 将指定目录压缩到和该目录同名的zip文件，自定义压缩路径
  16. *
  17. * @param sourceFilePath 目标文件路径
  18. * @param zipFilePath 指定zip文件路径
  19. * @return
  20. */
  21. public static boolean zip(String sourceFilePath, String zipFilePath,String zipFileName) {
  22. boolean result = false;
  23. File source = new File(sourceFilePath);
  24. if (!source.exists()) {
  25. logger.info(sourceFilePath + " doesn't exist.");
  26. return result;
  27. }
  28. if (!source.isDirectory()) {
  29. logger.info(sourceFilePath + " is not a directory.");
  30. return result;
  31. }
  32. File zipFile = new File(zipFilePath + File.separator + zipFileName + ".zip");
  33. if (zipFile.exists()) {
  34. logger.info(zipFile.getName() + " is already exist.");
  35. return result;
  36. } else {
  37. if (!zipFile.getParentFile().exists()) {
  38. if (!zipFile.getParentFile().mkdirs()) {
  39. logger.info("cann't create file " + zipFileName);
  40. return result;
  41. }
  42. }
  43. }
  44. logger.info("creating zip file...");
  45. FileOutputStream dest = null;
  46. ZipOutputStream out = null;
  47. try {
  48. dest = new FileOutputStream(zipFile);
  49. CheckedOutputStream checksum = new CheckedOutputStream(dest, new Adler32());
  50. out = new ZipOutputStream(new BufferedOutputStream(checksum));
  51. out.setMethod(ZipOutputStream.DEFLATED);
  52. compress(source, out, source.getName());
  53. result = true;
  54. } catch (FileNotFoundException e) {
  55. e.printStackTrace();
  56. } finally {
  57. if (out != null) {
  58. try {
  59. out.closeEntry();
  60. } catch (IOException e) {
  61. e.printStackTrace();
  62. }
  63. try {
  64. out.close();
  65. } catch (IOException e) {
  66. e.printStackTrace();
  67. }
  68. }
  69. }
  70. if (result) {
  71. logger.info("done.");
  72. } else {
  73. logger.info("fail.");
  74. }
  75. return result;
  76. }
  78. private static void compress(File file, ZipOutputStream out, String mainFileName) {
  79. int index = file.getAbsolutePath().indexOf(mainFileName);
  80. String entryName = file.getAbsolutePath().substring(index);
  81. //System.out.println(entryName);
  82. if (file.isFile()) {
  83. FileInputStream fi = null;
  84. BufferedInputStream origin = null;
  85. try {
  86. fi = new FileInputStream(file);
  87. origin = new BufferedInputStream(fi, BUFFER);
  88. ZipEntry entry = new ZipEntry(entryName);
  89. out.putNextEntry(entry);
  90. byte[] data = new byte[BUFFER];
  91. int count;
  92. while ((count = origin.read(data, 0, BUFFER)) != -1) {
  93. out.write(data, 0, count);
  94. }
  95. } catch (FileNotFoundException e) {
  96. e.printStackTrace();
  97. } catch (IOException e) {
  98. e.printStackTrace();
  99. } finally {
  100. if (origin != null) {
  101. try {
  102. origin.close();
  103. } catch (IOException e) {
  104. e.printStackTrace();
  105. }
  106. }
  107. }
  108. } else if (file.isDirectory()) {
  109. try {
  110. out.putNextEntry(new ZipEntry(entryName+File.separator));
  111. } catch (IOException e) {
  112. e.printStackTrace();
  113. }
  114. File[] fs = file.listFiles();
  115. if (fs != null && fs.length > 0) {
  116. for (File f : fs) {
  117. compress(f, out, mainFileName);
  118. }
  119. }
  120. }
  121. }
  123. /**
  124. * 将zip文件解压到指定的目录，该zip文件必须是使用该类的zip方法压缩的文件
  125. *
  126. * @param zipFile 要解压的zip文件
  127. * @param destPath 指定解压到的目录
  128. * @return
  129. */
  130. public static boolean unzip(File zipFile, String destPath) {
  131. boolean result = false;
  132. if (!zipFile.exists()) {
  133. logger.info(zipFile.getName() + " doesn't exist.");
  134. return result;
  135. }
  136. File target = new File(destPath);
  137. if (!target.exists()) {
  138. if (!target.mkdirs()) {
  139. logger.info("cann't create file " + target.getName());
  140. return result;
  141. }
  142. }
  143. String mainFileName = zipFile.getName().replace(".zip", "");
  144. File targetFile = new File(destPath + File.separator + mainFileName);
  145. if (targetFile.exists()) {
  146. logger.info(targetFile.getName() + " already exist.");
  147. return result;
  148. }
  149. ZipInputStream zis = null;
  150. logger.info("start unzip file ...");
  151. try {
  152. FileInputStream fis = new FileInputStream(zipFile);
  153. CheckedInputStream checksum = new CheckedInputStream(fis, new Adler32());
  154. zis = new ZipInputStream(new BufferedInputStream(checksum));
  155. ZipEntry entry;
  156. while ((entry = zis.getNextEntry()) != null) {
  157. int count;
  158. byte data[] = new byte[BUFFER];
  159. String entryName = entry.getName();
  160. //logger.info(entryName);
  161. String newEntryName = destPath + File.separator + entryName;
  162. newEntryName=newEntryName.replaceAll("\\", "/");
  163. File f = new File(newEntryName);
  164. if(newEntryName.endsWith("/")){
  165. if(!f.exists()){
  166. if(!f.mkdirs()) {
  167. throw new RuntimeException("can't create directory " + f.getName());
  168. }
  169. }
  170. }else{
  171. File temp=f.getParentFile();
  172. if (!temp.exists()) {
  173. if (!temp.mkdirs()) {
  174. throw new RuntimeException("create file " + temp.getName() + " fail");
  175. }
  176. }
  177. FileOutputStream fos = new FileOutputStream(f);
  178. BufferedOutputStream dest = new BufferedOutputStream(fos, BUFFER);
  179. while ((count = zis.read(data, 0, BUFFER)) != -1) {
  180. dest.write(data, 0, count);
  181. }
  182. dest.flush();
  183. dest.close();
  184. }
  185. }
  186. result = true;
  187. } catch (FileNotFoundException e) {
  188. e.printStackTrace();
  189. } catch (IOException e) {
  190. e.printStackTrace();
  191. } finally {
  192. if (zis != null) {
  193. try {
  194. zis.close();
  195. } catch (IOException e) {
  196. e.printStackTrace();
  197. }
  198. }
  199. }
  200. if (result) {
  201. logger.info("done.");
  202. } else {
  203. logger.info("fail.");
  204. }
  205. return result;
  206. }
  208. public static void main(String[] args) throws IOException {
  209. // String path="D:\temp\B";
  210. // ZipUtil.zip(path,"d:/temp/c","anhuigs123");
  211. String zipfile ="D:\temp\c\B.zip";
  212. File zipFile = new File(zipfile);
  213. String output="D:\temp\c";
  214. ZipUtil.unzip(zipFile, output);
  215. }
  216. }
复制代码

收藏 邀请
上一篇：Java 身份证工具类下一篇：java正则表达式工具类

最新评论

相关分类

小黑屋|在路上 ( 蜀ICP备15035742号-1 )  

;

GMT+8, 2025-7-8 15:32

Copyright 2015-2025 djqfx

返回顶部