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tomcat解壓war包的一點例外

系統 1913 0

我在項目的開發過程中，發現Tomcat 解壓war ?的一點例外。
???
???現象如下：

???????使用ANT工具把web應用程序打 包 為war文件。然后把war文件放到tomcat的webapps，讓tomcat自己解壓。結果出 現解壓的web應用程序文件丟失。使用rar工具打開war文件。文件都齊全。怎么有 這種現象呢？？查看tomcat的log文檔。發現在 解壓war 文檔 NullpointException.我升級tomcat到5.0還是 出 現這種現象。

jakarta-tomcat-catalina/catalina/src/share/org/apache/catalina/startup/HostConfig.java

???解決方法：

???????我從tomcat網站下載了catalina?的原代碼，進行分析。發現是在 解壓war 文件 出 現input為null,而?input=?jar.getInputStream(entry);然后提高tomcat的debug級別。可以在tomcat的log文檔看到tomcat 解壓war 文檔的過程。發現如果某些文件名為???.txt,經檢查發現原來這個文件的文件名為漢字。
??????噢！才發現war文件在解壓的過程中無法處理漢字的文件名。（因為找不到文件名為???.txt的文件而導致null例外。原來這個文件是個注釋文檔），所以在使用ant把web應用程序打 包 為war文件，一定要把文件名為漢字的文件去掉。使用Forte?for?java的IDE工具把web應用程序打 包 為war文件會不 包 含這些文件名為漢字的文件
。

下面是部分war文檔解壓的部分代碼

代碼采自jakarta.org?



?類HostConfig.java

jakarta-tomcat-catalina/catalina/src/share/org/apache/catalina/startup/HostConfig.java



???解決方法：

???????我從tomcat網站下載了catalina?的原代碼，進行分析。發現是在 解壓war 文件 出 現input為null,而?input=?jar.getInputStream(entry);然后提高tomcat的debug級別。可以在tomcat的log文檔看到tomcat 解壓war 文檔的過程。發現如果某些文件名為???.txt,經檢查發現原來這個文件的文件名為漢字。
??????噢！才發現war文件在解壓的過程中無法處理漢字的文件名。（因為找不到文件名為???.txt的文件而導致null例外。原來這個文件是個注釋文檔），所以在使用ant把web應用程序打 包 為war文件，一定要把文件名為漢字的文件去掉。使用Forte?for?java的IDE工具把web應用程序打 包 為war文件會不 包 含這些文件名為漢字的文件
。

下面是部分war文檔解壓的部分代碼

代碼采自jakarta.org?



?類HostConfig.java

jakarta-tomcat-catalina/catalina/src/share/org/apache/catalina/startup/HostConfig.java


  1. ? protected ? void ?deployWARs( File ?appBase,? String []?files)?{
  3. ???????? for ?( int ?i?=?0;?i?<?files. length ;?i++)?{
  5. ???????????? if ?(files[i].equalsIgnoreCase( "META-INF" ))
  6. ???????????????? continue ;
  7. ???????????? if ?(files[i].equalsIgnoreCase( " WEB- INF" ))
  8. ???????????????? continue ;
  9. ???????????? if ?(deployed.contains(files[i]))
  10. ???????????????? continue ;
  11. ???????????? File ?dir?=? new ? File (appBase,?files[i]);
  12. ???????????? if ?(files[i].toLowerCase().endsWith( ".war" ))?{
  14. ????????????????deployed.add(files[i]);
  16. ???????????????? //?Calculate?the?context?path?and?make?sure?it?is?unique
  17. ???????????????? String ?contextPath?=? "/" ?+?files[i];
  18. ???????????????? int ?period?=?contextPath.lastIndexOf( "." );
  19. ???????????????? if ?(period?>=?0)
  20. ????????????????????contextPath?=?contextPath.substring(0,?period);
  21. ???????????????? if ?(contextPath.equals( "/ROOT" ))
  22. ????????????????????contextPath?=? "" ;
  23. ???????????????? if ?(host.findChild(contextPath)?!=? null )
  24. ???????????????????? continue ;
  26. ???????????????? //?Checking?for?a?nested?/META-INF/context.xml
  27. ???????????????? JarFile ?jar?=? null ;
  28. ???????????????? JarEntry ?entry?=? null ;
  29. ???????????????? InputStream ?istream?=? null ;
  30. ???????????????? BufferedOutputStream ?ostream?=? null ;
  31. ???????????????? File ?xml?=? new ? File
  32. ????????????????????(configBase,?files[i].substring
  33. ?????????????????????(0,?files[i].lastIndexOf( "." ))?+? ".xml" );
  34. ???????????????? if ?(!xml.exists())?{
  35. ???????????????????? try ?{
  36. ????????????????????????jar?=? new ? JarFile (dir);
  37. ????????????????????????entry?=?jar.getJarEntry( "META-INF/context.xml" );
  38. ???????????????????????? if ?(entry?!=? null )?{
  39. ????????????????????????????istream?=?jar.getInputStream(entry);
  40. ????????????????????????????ostream?=
  41. ???????????????????????????????? new ? BufferedOutputStream
  42. ????????????????????????????????( new ? FileOutputStream (xml),?1024);
  43. ???????????????????????????? byte ?buffer[]?=? new ? byte [1024];
  44. ???????????????????????????? while ?( true )?{
  45. ???????????????????????????????? int ?n?=?istream.read(buffer);
  46. ???????????????????????????????? if ?(n?<?0)?{
  47. ???????????????????????????????????? break ;
  48. ????????????????????????????????}
  49. ????????????????????????????????ostream.write(buffer,?0,?n);
  50. ????????????????????????????}
  51. ????????????????????????????ostream.flush();
  52. ????????????????????????????ostream.close();
  53. ????????????????????????????ostream?=? null ;
  54. ????????????????????????????istream.close();
  55. ????????????????????????????istream?=? null ;
  56. ????????????????????????????entry?=? null ;
  57. ????????????????????????????jar.close();
  58. ????????????????????????????jar?=? null ;
  59. ????????????????????????????deployDescriptors(configBase(),?configBase.list());
  60. ???????????????????????????? return ;
  61. ????????????????????????}
  62. ????????????????????}? catch ?( Exception ?e)?{
  63. ???????????????????????? //?Ignore?and?continue
  64. ???????????????????????? if ?(ostream?!=? null )?{
  65. ???????????????????????????? try ?{
  66. ????????????????????????????????ostream.close();
  67. ????????????????????????????}? catch ?( Throwable ?t)?{
  68. ????????????????????????????????;
  69. ????????????????????????????}
  70. ????????????????????????????ostream?=? null ;
  71. ????????????????????????}
  72. ???????????????????????? if ?(istream?!=? null )?{
  73. ???????????????????????????? try ?{
  74. ????????????????????????????????istream.close();
  75. ????????????????????????????}? catch ?( Throwable ?t)?{
  76. ????????????????????????????????;
  77. ????????????????????????????}
  78. ????????????????????????????istream?=? null ;
  79. ????????????????????????}
  80. ????????????????????????entry?=? null ;
  81. ???????????????????????? if ?(jar?!=? null )?{
  82. ???????????????????????????? try ?{
  83. ????????????????????????????????jar.close();
  84. ????????????????????????????}? catch ?( Throwable ?t)?{
  85. ????????????????????????????????;
  86. ????????????????????????????}
  87. ????????????????????????????jar?=? null ;
  88. ????????????????????????}
  89. ????????????????????}
  90. ????????????????}
  92. ???????????????? if ?(isUnpackWARs())?{
  94. ???????????????????? //?Expand?and?deploy?this?application?as?a?directory
  95. ????????????????????log.debug(sm.getString( "hostConfig.expand" ,?files[i]));
  96. ???????????????????? URL ?url?=? null ;
  97. ???????????????????? String ?path?=? null ;
  98. ???????????????????? try ?{
  99. ????????????????????????url?=? new ? URL ( "jar:file:" ?+
  100. ??????????????????????????????????????dir.getCanonicalPath()?+? "!/" );
  101. ????????????????????????path?=?ExpandWar.expand(host,?url);
  102. ????????????????????}? catch ?( IOException ?e)?{
  103. ???????????????????????? //?JAR?decompression?failure
  104. ????????????????????????log.warn(sm.getString
  105. ?????????????????????????????????( "hostConfig.expand.error" ,?files[i]));
  106. ???????????????????????? continue ;
  107. ????????????????????}? catch ?( Throwable ?t)?{
  108. ????????????????????????log.error(sm.getString
  109. ??????????????????????????????????( "hostConfig.expand.error" ,?files[i]),?t);
  110. ???????????????????????? continue ;
  111. ????????????????????}
  112. ???????????????????? try ?{
  113. ???????????????????????? if ?(path?!=? null )?{
  114. ????????????????????????????url?=? new ? URL ( "file:" ?+?path);
  115. ????????????????????????????((Deployer)?host).install(contextPath,?url);
  116. ????????????????????????}
  117. ????????????????????}? catch ?( Throwable ?t)?{
  118. ????????????????????????log.error(sm.getString
  119. ??????????????????????????????????( "hostConfig.expand.error" ,?files[i]),?t);
  120. ????????????????????}
  122. ????????????????}? else ?{
  124. ???????????????????? //?Deploy?the?application?in?this?WAR?file
  125. ????????????????????log.info(sm.getString( "hostConfig.deployJar" ,?files[i]));
  126. ???????????????????? try ?{
  127. ???????????????????????? URL ?url?=? new ? URL ( "file" ,? null ,
  128. ??????????????????????????????????????????dir.getCanonicalPath());
  129. ????????????????????????url?=? new ? URL ( "jar:" ?+?url.toString()?+? "!/" );
  130. ????????????????????????((Deployer)?host).install(contextPath,?url);
  131. ????????????????????}? catch ?( Throwable ?t)?{
  132. ????????????????????????log.error(sm.getString( "hostConfig.deployJar.error" ,
  133. ?????????????????????????????????????????files[i]),?t);
  134. ????????????????????}
  136. ????????????????}
  138. ????????????}
  140. ????????}
  142. ????}


類?ExpandWar.java
jakarta-tomcat-catalina/catalina/src/share/org/apache/catalina/startup/ExpandWar.java

  1. package ?org.apache.catalina.startup;
  3. import ?java.io. BufferedOutputStream ;
  4. import ?java.io. File ;
  5. import ?java.io. FileOutputStream ;
  6. import ?java.io. InputStream ;
  7. import ?java.io. IOException ;
  8. import ?java.net. JarURLConnection ;
  9. import ?java.net. URL ;
  10. import ?java.util. Enumeration ;
  11. import ?java.util.jar. JarEntry ;
  12. import ?java.util.jar. JarFile ;
  14. import ?org.apache.catalina.Host;
  15. import ?org.apache.catalina. Logger ;
  16. import ?org.apache.catalina.core.StandardHost;
  17. import ?org.apache.catalina.util.StringManager;
  19. /**
  20. ?*?Expand?out?a?WAR?in?a?Host‘s?appBase.
  21. ?*
  22. ?*?@author?Craig?R.?McClanahan
  23. ?*?@author?Remy?Maucherat
  24. ?*?@author?Glenn?L.?Nielsen
  25. ?*?@version?$Revision:?1.4?$
  26. ?*/
  28. public ? class ?ExpandWar?{
  31. ???? /**
  32. ?????*?The?string?resources?for?this?package.
  33. ?????*/
  34. ???? protected ? static ? final ?StringManager?sm?=
  35. ????????StringManager.getManager( Constants . Package );
  38. ???? /**
  39. ?????*?Expand?the?WAR?file?found?at?the?specified?URL?into?an?unpacked
  40. ?????*?directory?structure,?and?return?the?absolute?pathname?to?the?expanded
  41. ?????*?directory.
  42. ?????*
  43. ?????*?@param?host?Host?war?is?being?installed?for
  44. ?????*?@param?war?URL?of?the?web?application?archive?to?be?expanded
  45. ?????*??(must?start?with?"jar:")
  46. ?????*
  47. ?????*?@exception?IllegalArgumentException?if?this?is?not?a?"jar:"?URL
  48. ?????*?@exception?IOException?if?an?input/output?error?was?encountered
  49. ?????*??during?expansion
  50. ?????*/
  51. ???? public ? static ? String ?expand(Host?host,? URL ?war)
  52. ???????? throws ? IOException ?{
  54. ???????? int ?debug?=?0;
  55. ???????? Logger ?logger?=?host.getLogger();
  57. ???????? if ?(host? instanceof ?StandardHost)?{
  58. ????????????debug?=?((StandardHost)?host).getDebug();
  59. ????????}
  61. ???????? //?Calculate?the?directory?name?of?the?expanded?directory
  62. ???????? if ?(debug?>=?1)?{
  63. ????????????logger.log( "expand(" ?+?war.toString()?+? ")" );
  64. ????????}
  65. ???????? String ?pathname?=?war.toString().replace(‘\\‘,?‘/‘);
  66. ???????? if ?(pathname.endsWith( "!/" ))?{
  67. ????????????pathname?=?pathname.substring(0,?pathname. length ()?-?2);
  68. ????????}
  69. ???????? int ?period?=?pathname.lastIndexOf(‘.‘);
  70. ???????? if ?(period?>=?pathname. length ()?-?4)
  71. ????????????pathname?=?pathname.substring(0,?period);
  72. ???????? int ?slash?=?pathname.lastIndexOf(‘/‘);
  73. ???????? if ?(slash?>=?0)?{
  74. ????????????pathname?=?pathname.substring(slash?+?1);
  75. ????????}
  76. ???????? if ?(debug?>=?1)?{
  77. ????????????logger.log( "??Proposed?directory?name:?" ?+?pathname);
  78. ????????}
  79. ???????? return ?expand(host,?war,?pathname);
  81. ????}
  84. ???? /**
  85. ?????*?Expand?the?WAR?file?found?at?the?specified?URL?into?an?unpacked
  86. ?????*?directory?structure,?and?return?the?absolute?pathname?to?the?expanded
  87. ?????*?directory.
  88. ?????*
  89. ?????*?@param?host?Host?war?is?being?installed?for
  90. ?????*?@param?war?URL?of?the?web?application?archive?to?be?expanded
  91. ?????*??(must?start?with?"jar:")
  92. ?????*?@param?pathname?Context?path?name?for?web?application
  93. ?????*
  94. ?????*?@exception?IllegalArgumentException?if?this?is?not?a?"jar:"?URL
  95. ?????*?@exception?IOException?if?an?input/output?error?was?encountered
  96. ?????*??during?expansion
  97. ?????*/
  98. ???? public ? static ? String ?expand(Host?host,? URL ?war,? String ?pathname)
  99. ???????? throws ? IOException ?{
  101. ???????? int ?debug?=?0;
  102. ???????? Logger ?logger?=?host.getLogger();
  104. ???????? if ?(host? instanceof ?StandardHost)?{
  105. ????????????debug?=?((StandardHost)?host).getDebug();
  106. ????????}
  108. ???????? //?Make?sure?that?there?is?no?such?directory?already?existing
  109. ???????? File ?appBase?=? new ? File (host.getAppBase());
  110. ???????? if ?(!appBase.isAbsolute())?{
  111. ????????????appBase?=? new ? File ( System .getProperty( "catalina.base" ),
  112. ???????????????????????????????host.getAppBase());
  113. ????????}
  114. ???????? if ?(!appBase.exists()?||?!appBase.isDirectory())?{
  115. ???????????? throw ? new ? IOException
  116. ????????????????(sm.getString( "hostConfig.appBase" ,
  117. ??????????????????????????????appBase.getAbsolutePath()));
  118. ????????}
  119. ???????? File ?docBase?=? new ? File (appBase,?pathname);
  120. ???????? if ?(docBase.exists())?{
  121. ???????????? //?War?file?is?already?installed
  122. ???????????? return ?(docBase.getAbsolutePath());
  123. ????????}
  125. ???????? //?Create?the?new?document?base?directory
  126. ????????docBase.mkdir();
  127. ???????? if ?(debug?>=?2)?{
  128. ????????????logger.log( "??Have?created?expansion?directory?" ?+
  129. ????????????????docBase.getAbsolutePath());
  130. ????????}
  132. ???????? //?Expand?the?WAR?into?the?new?document?base?directory
  133. ???????? JarURLConnection ?juc?=?( JarURLConnection )?war.openConnection();
  134. ????????juc.setUseCaches( false );
  135. ???????? JarFile ?jarFile?=? null ;
  136. ???????? InputStream ?input?=? null ;
  137. ???????? try ?{
  138. ????????????jarFile?=?juc.getJarFile();
  139. ???????????? if ?(debug?>=?2)?{
  140. ????????????????logger.log( "??Have?opened?JAR?file?successfully" );
  141. ????????????}
  142. ???????????? Enumeration ?jarEntries?=?jarFile.entries();
  143. ???????????? if ?(debug?>=?2)?{
  144. ????????????????logger.log( "??Have?retrieved?entries?enumeration" );
  145. ????????????}
  146. ???????????? while ?(jarEntries.hasMoreElements())?{
  147. ???????????????? JarEntry ?jarEntry?=?( JarEntry )?jarEntries.nextElement();
  148. ???????????????? String ?name?=?jarEntry.getName();
  149. ???????????????? if ?(debug?>=?2)?{
  150. ????????????????????logger.log( "??Am?processing?entry?" ?+?name);
  151. ????????????????}
  152. ???????????????? int ?last?=?name.lastIndexOf(‘/‘);
  153. ???????????????? if ?(last?>=?0)?{
  154. ???????????????????? File ?parent?=? new ? File (docBase,
  155. ???????????????????????????????????????????name.substring(0,?last));
  156. ???????????????????? if ?(debug?>=?2)?{
  157. ????????????????????????logger.log( "??Creating?parent?directory?" ?+?parent);
  158. ????????????????????}
  159. ????????????????????parent.mkdirs();
  160. ????????????????}
  161. ???????????????? if ?(name.endsWith( "/" ))?{
  162. ???????????????????? continue ;
  163. ????????????????}
  164. ???????????????? if ?(debug?>=?2)?{
  165. ????????????????????logger.log( "??Creating?expanded?file?" ?+?name);
  166. ????????????????}
  167. ????????????????input?=?jarFile.getInputStream(jarEntry);
  168. ????????????????expand(input,?docBase,?name);
  169. ????????????????input.close();
  170. ????????????????input?=? null ;
  171. ????????????}
  172. ????????}? catch ?( IOException ?e)?{
  173. ???????????? //?If?something?went?wrong,?delete?expanded?dir?to?keep?things?
  174. ???????????? //?clean
  175. ????????????deleteDir(docBase);
  176. ???????????? throw ?e;
  177. ????????}? finally ?{
  178. ???????????? if ?(input?!=? null )?{
  179. ???????????????? try ?{
  180. ????????????????????input.close();
  181. ????????????????}? catch ?( Throwable ?t)?{
  182. ????????????????????;
  183. ????????????????}
  184. ????????????????input?=? null ;
  185. ????????????}
  186. ???????????? if ?(jarFile?!=? null )?{
  187. ???????????????? try ?{
  188. ????????????????????jarFile.close();
  189. ????????????????}? catch ?( Throwable ?t)?{
  190. ????????????????????;
  191. ????????????????}
  192. ????????????????jarFile?=? null ;
  193. ????????????}
  194. ????????}
  196. ???????? //?Return?the?absolute?path?to?our?new?document?base?directory
  197. ???????? return ?(docBase.getAbsolutePath());
  199. ????}
  202. ???? /**
  203. ?????*?Delete?the?specified?directory,?including?all?of?its?contents?and
  204. ?????*?subdirectories?recursively.
  205. ?????*
  206. ?????*?@param?dir?File?object?representing?the?directory?to?be?deleted
  207. ?????*/
  208. ???? public ? static ? void ?deleteDir( File ?dir)?{
  210. ???????? String ?files[]?=?dir.list();
  211. ???????? if ?(files?==? null )?{
  212. ????????????files?=? new ? String [0];
  213. ????????}
  214. ???????? for ?( int ?i?=?0;?i?<?files. length ;?i++)?{
  215. ???????????? File ?file?=? new ? File (dir,?files[i]);
  216. ???????????? if ?(file.isDirectory())?{
  217. ????????????????deleteDir(file);
  218. ????????????}? else ?{
  219. ????????????????file.delete();
  220. ????????????}
  221. ????????}
  222. ????????dir.delete();
  224. ????}
  227. ???? /**
  228. ?????*?Expand?the?specified?input?stream?into?the?specified?directory,?creating
  229. ?????*?a?file?named?from?the?specified?relative?path.
  230. ?????*
  231. ?????*?@param?input?InputStream?to?be?copied
  232. ?????*?@param?docBase?Document?base?directory?into?which?we?are?expanding
  233. ?????*?@param?name?Relative?pathname?of?the?file?to?be?created
  234. ?????*
  235. ?????*?@exception?IOException?if?an?input/output?error?occurs
  236. ?????*/
  237. ???? protected ? static ? void ?expand( InputStream ?input,? File ?docBase,? String ?name)
  238. ???????? throws ? IOException ?{
  240. ???????? File ?file?=? new ? File (docBase,?name);
  241. ???????? BufferedOutputStream ?output?=? null ;
  242. ???????? try ?{
  243. ????????????output?=?
  244. ???????????????? new ? BufferedOutputStream ( new ? FileOutputStream (file));
  245. ???????????? byte ?buffer[]?=? new ? byte [2048];
  246. ???????????? while ?( true )?{
  247. ????????????????[b] int ?n?=?input.read(buffer);[/b]???????????????
  248. ???????????????? if ?(n?<=?0)
  249. ???????????????????? break ;
  250. ????????????????output.write(buffer,?0,?n);
  251. ????????????}
  252. ????????}? finally ?{
  253. ???????????? if ?(output?!=? null )?{
  254. ???????????????? try ?{
  255. ????????????????????output.close();
  256. ????????????????}? catch ?( IOException ?e)?{
  257. ???????????????????? //?Ignore
  258. ????????????????}
  259. ????????????}
  260. ????????}
  262. ????}
  265. }

?

tomcat解壓war包的一點例外


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您的支持是博主寫作最大的動力，如果您喜歡我的文章，感覺我的文章對您有幫助，請用微信掃描上面二維碼支持博主2元、5元、10元、自定義金額等您想捐的金額吧，站長會非常 感謝您的哦！！！

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