myeclipse转eclipse jee的工程文件补丁（主若是maven补丁）

myeclipse转eclipse jee的工程文件补丁（主要是maven补丁）
以下是用来将myeclipse（或者其他没有加maven配置的工程）的工程文件装换到最新的m2eclipse插件所能识别的格式，简单来说就是修改.project和.classpath使用方法：1. 在workspace任意层级下（当然啦，这个workspace的名字要包含"workspace"字样），运行: java?EclipseM2Patch 2. 在任意目录下指定workspace目录，运行:?java?EclipseM2Patch /java/workspace运行后将会对workspace下的所有需要patch工程文件进行patch，如果不满意还可以回滚，满意就删除所有备份文件。?Java代码

1. import?java.io.BufferedReader;??
2. import?java.io.File;??
3. import?java.io.FileInputStream;??
4. import?java.io.FileOutputStream;??
5. import?java.io.InputStreamReader;??
6. import?java.util.ArrayList;??
7. ??
8. public?class?EclipseM2Patch?{??
9. ??
10. ????private?static?String?fileToString(File?f)?throws?Exception?{??
11. ????????byte[]?bytes?=?fileToBytes(f);??
12. ????????if?(bytes.length?==?0)??
13. ????????????return?null;??
14. ????????return?new?String(bytes,?"iso-8859-1");??
15. ????}??
16. ??
17. ????private?static?byte[]?fileToBytes(File?f)?throws?Exception?{??
18. ????????if?(!f.exists())??
19. ????????????return?null;??
20. ????????FileInputStream?fis?=?null;??
21. ????????byte[]?all?=?new?byte[0];??
22. ????????try?{??
23. ????????????byte[]?buf?=?new?byte[1024];??
24. ????????????fis?=?new?FileInputStream(f);??
25. ????????????int?read?=?-1;??
26. ????????????while?((read?=?fis.read(buf))?!=?-1)?{??
27. ????????????????byte[]?tmp?=?new?byte[all.length?+?read];??
28. ????????????????if?(all.length?>?0)??
29. ????????????????????System.arraycopy(all,?0,?tmp,?0,?all.length);??
30. ????????????????System.arraycopy(buf,?0,?tmp,?all.length,?read);??
31. ????????????????all?=?tmp;??
32. ????????????}??
33. ????????}?finally?{??
34. ????????????if?(fis?!=?null)??
35. ????????????????fis.close();??
36. ????????}??
37. ????????return?all;??
38. ????}??
39. ??
40. ????private?static?void?write(File?f,?String?content)?throws?Exception?{??
41. ????????FileOutputStream?fos?=?new?FileOutputStream(f);??
42. ????????try?{??
43. ????????????fos.write(content.getBytes("iso-8859-1"));??
44. ????????}?finally?{??
45. ????????????fos.close();??
46. ????????}??
47. ????}??
48. ??
49. ????private?static?File?backup(File?f)?throws?Exception?{??
50. ????????byte[]?bytes?=?fileToBytes(f);??
51. ????????if?(bytes.length?>?0)?{??
52. ????????????File?backupfile?=?new?File(f.getAbsoluteFile()?+?".patchbackup");??
53. ????????????FileOutputStream?fos?=?new?FileOutputStream(backupfile);??
54. ????????????try?{??
55. ????????????????fos.write(bytes);??
56. ????????????}?finally?{??
57. ????????????????fos.close();??
58. ????????????}??
59. ????????????return?backupfile;??
60. ????????}??
61. ????????return?null;??
62. ????}??
63. ??
64. ????public?static?void?main(String[]?args)?throws?Exception?{??
65. ????????String?workspacepath?=?args.length?==?0???null?:?args[0];??
66. ????????if?(workspacepath?==?null)?{??
67. ????????????File?file?=?new?File(".");??
68. ????????????String?p?=?file.getAbsolutePath().replaceAll("(?i)(workspace[^\\\\/]+).*",?"$1");??
69. ????????????if?(p.length()?!=?file.getAbsolutePath().length())?{??
70. ????????????????workspacepath?=?p;??
71. ????????????}??
72. ????????}??
73. ????????if?(workspacepath?==?null)?{??
74. ????????????throw?new?IllegalAccessException();??
75. ????????}??
76. ????????ArrayList<File>?backups?=?new?ArrayList<File>();??
77. ????????File?workspace?=?new?File(workspacepath);??
78. ????????for?(File?projectBaseDir?:?workspace.listFiles())?{??
79. ????????????if?(projectBaseDir.isDirectory()??
80. ????????????????????&&?projectBaseDir.getName().matches("^\\p{Alpha}[\\p{Alpha}_-]+$"))?{??
81. ????????????????File?_project?=?new?File(projectBaseDir,?".project");??
82. ????????????????File?_classpath?=?new?File(projectBaseDir,?".classpath");??
83. ????????????????if?(_project.exists())?{??
84. ????????????????????String?content?=?fileToString(_project);??
85. ????????????????????String?addToContent?=?"<nature>org.eclipse.m2e.core.maven2Nature</nature>";??
86. ????????????????????if?(!content.contains(addToContent))?{??
87. ????????????????????????File?backupfile?=?backup(_project);??
88. ????????????????????????if?(backupfile?!=?null)??
89. ????????????????????????????backups.add(backupfile);??
90. ????????????????????????content?=?content.replaceAll("(?im)(\\s+)(?=</natures>)",?"$1\t"?+?addToContent??
91. ????????????????????????????????+?"$1");??
92. ????????????????????????write(_project,?content);??
93. ????????????????????????System.out.println("file:"?+?_project?+?"?-?patched");??
94. ????????????????????}?else?{??
95. ????????????????????????File?backupfile?=?new?File(_project.getAbsoluteFile()?+?".patchbackup");??
96. ????????????????????????if?(backupfile.exists())?{??
97. ????????????????????????????backups.add(backupfile);??
98. ????????????????????????}??
99. ????????????????????}??
100. ????????????????}??
101. ????????????????if?(_classpath.exists())?{??
102. ????????????????????String?content?=?fileToString(_classpath);??
103. ????????????????????String?addToContent?=?"<classpathentry?kind="con"?path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER"/>";??
104. ????????????????????if?(!content.contains("org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER"))?{??
105. ????????????????????????File?backupfile?=?backup(_classpath);??
106. ????????????????????????if?(backupfile?!=?null)??
107. ????????????????????????????backups.add(backupfile);??
108. ????????????????????????content?=?content.replaceAll("(?im)(\\s+)(?=</classpath>)",?"$1\t"?+?addToContent??
109. ????????????????????????????????+?"$1");??
110. ????????????????????????write(_classpath,?content);??
111. ????????????????????????System.out.println("file:"?+?_classpath?+?"?-?patched");??
112. ????????????????????}?else?{??
113. ????????????????????????File?backupfile?=?new?File(_classpath.getAbsoluteFile()?+?".patchbackup");??
114. ????????????????????????if?(backupfile.exists())?{??
115. ????????????????????????????backups.add(backupfile);??
116. ????????????????????????}??
117. ????????????????????}??
118. ????????????????}??
119. ????????????}??
120. ????????}??
121. ????????BufferedReader?rd?=?new?BufferedReader(new?InputStreamReader(System.in));??
122. ????????String?line?=?null;??
123. ????????if?(backups.size()?>?0)?{??
124. ????????????System.out.println(">Delete?all?backups?(Y-yes/N-no/R-rollback)");??
125. ????????????line?=?rd.readLine();??
126. ????????????for?(File?f?:?backups)?{??
127. ????????????????if?("y".equalsIgnoreCase(line))?{??
128. ????????????????????boolean?delete?=?f.delete();??
129. ????????????????????System.out.println("Delete?file:"?+?f?+?"?-?"?+?(delete???"ok"?:?"fail"));??
130. ????????????????}?else?if?("r".equalsIgnoreCase(line))?{??
131. ????????????????????File?file?=?new?File(f.getAbsolutePath().replace(".patchbackup",?""));??
132. ????????????????????boolean?result?=?file.delete();??
133. ????????????????????if?(result)??
134. ????????????????????????result?=?f.renameTo(file);??
135. ????????????????????System.out.println("Rollback?file:"?+?f?+?"?-?"?+?(result???"ok"?:?"fail"));??
136. ????????????????}??
137. ????????????}??
138. ????????}??
139. ????????System.out.println(">Press?any?key?to?continue...");??
140. ????????line?=?rd.readLine();??
141. ????????rd.close();??
142. ????}??
143. }??