一个非常好用的java读写INI配置文件

1. package mytools;
2.
3. import java.io.BufferedReader;
4. import java.io.BufferedWriter;
5. import java.io.FileReader;
6. import java.io.FileWriter;
7. import java.io.IOException;
8. import java.util.regex.Matcher;
9. import java.util.regex.Pattern;
10.
11. /** */ /**
12. * 这是个配置文件操作类，用来读取和设置ini配置文件
13. * @author 由月
14. * @version 2004-08-18
15. */
16. public final class ConfigurationFile {
17. /** */ /**
18. * 从ini配置文件中读取变量的值
19. * @param file 配置文件的路径
20. * @param section 要获取的变量所在段名称
21. * @param variable 要获取的变量名称
22. * @param defaultValue 变量名称不存在时的默认值
23. * @return 变量的值
24. * @throws IOException 抛出文件操作可能出现的io异常
25. */
26. public static String getProfileString(
27. String file,
28. String section,
29. String variable,
30. String defaultValue)
31. throws IOException {
32. String strLine, value = “” ;
33. BufferedReader bufferedReader = new BufferedReader( new FileReader(file));
34. boolean isInSection = false ;
35. try {
36. while ((strLine = bufferedReader.readLine()) != null ) {
37. strLine = strLine.trim();
38. strLine = strLine.split( ” [;] ” )[ 0 ];
39. Pattern p;
40. Matcher m;
41. p = pile( ” file://[//s*.*//s*//] ” );
42. m = p.matcher((strLine));
43. if (m.matches()) {
44. p = pile( ” file://[//s* " + section + " file://s*//] ” );
45. m = p.matcher(strLine);
46. if (m.matches()) {
47. isInSection = true ;
48. } else {
49. isInSection = false ;
50. }
51. }
52. if (isInSection == true ) {
53. strLine = strLine.trim();
54. String[] strArray = strLine.split( ” = ” );
55. if (strArray.length == 1 ) {
56. value = strArray[ 0 ].trim();
57. if (value.equalsIgnoreCase(variable)) {
58. value = “” ;
59. return value;
60. }
61. } else if (strArray.length == 2 ) {
62. value = strArray[ 0 ].trim();
63. if (value.equalsIgnoreCase(variable)) {
64. value = strArray[ 1 ].trim();
65. return value;
66. }
67. } else if (strArray.length > 2 ) {
68. value = strArray[ 0 ].trim();
69. if (value.equalsIgnoreCase(variable)) {
70. value = strLine.substring(strLine.indexOf( ” = ” ) + 1 ).trim();
71. return value;
72. }
73. }
74. }
75. }
76. } finally {
77. bufferedReader.close();
78. }
79. return defaultValue;
80. }
81. /** */ /**
82. * 修改ini配置文件中变量的值
83. * @param file 配置文件的路径
84. * @param section 要修改的变量所在段名称
85. * @param variable 要修改的变量名称
86. * @param value 变量

的新值
87. * @throws IOException 抛出文件操作可能出现的io异常
88. */
89. public static boolean setProfileString(
90. String file,
91. String section,
92. String variable,
93. String value)
94. throws IOException {
95. String fileContent, allLine,strLine, newLine, remarkStr;
96. String getValue;
97. BufferedReader bufferedReader = new BufferedReader( new FileReader(file));
98. boolean isInSection = false ;
99. fileContent = “” ;
100. try {
101.
102. while ((allLine = bufferedReader.readLine()) != null ) {
103. allLine = allLine.trim();
104. if (allLine.split( ” [;] ” ).length > 1 )
105. remarkStr = ” ; “ + allLine.split( ” ; ” )[ 1 ];
106. else
107. remarkStr = “” ;
108. strLine = allLine.split( ” ; ” )[ 0 ];
109. Pattern p;
110. Matcher m;
111. p = pile( ” file://[//s*.*//s*//] ” );
112. m = p.matcher((strLine));
113. if (m.matches()) {
114. p = pile( ” file://[//s* " + section + " file://s*//] ” );
115. m = p.matcher(strLine);
116. if (m.matches()) {
117. isInSection = true ;
118. } else {
119. isInSection = false ;
120. }
121. }
122. if (isInSection == true ) {
123. strLine = strLine.trim();
124. String[] strArray = strLine.split( ” = ” );
125. getValue = strArray[ 0 ].trim();
126. if (getValue.equalsIgnoreCase(variable)) {
127. newLine = getValue + “ = “ + value + “ “ + remarkStr;
128. fileContent += newLine + ” \r\n ” ;
129. while ((allLine = bufferedReader.readLine()) != null ) {
130. fileContent += allLine + ” \r\n ” ;
131. }
132. bufferedReader.close();
133. BufferedWriter bufferedWriter =
134. new BufferedWriter( new FileWriter(file, false ));
135. bufferedWriter.write(fileContent);
136. bufferedWriter.flush();
137. bufferedWriter.close();
138.
139. return true ;
140. }
141. }
142. fileContent += allLine + ” \r\n ” ;
143. }
144. } catch (IOException ex) {
145. throw ex;
146. } finally {
147. bufferedReader.close();
148. }
149. return false ;
150. }
151. /** */ /**
152. * 程序测试
153. */
154. public static void main(String[] args) {
155. // String value = Config.getProfileString(”sysconfig.ini”, “Option”, “OracleDB”, “default”);
156. // System.out.println(value);
157. try {
158. System.out.println(ConfigurationFile.setProfileString( ” d:/1.ini ” , ” Settings ” , ” SampSize ” , ” 111 ” ));
159. } catch (IOException e) {
160. System.out.println(e.toString());
161. }
162.
163. }
164. }