一个非常好用的Java读写INI配置文件的类
By Minidxer | November 17, 2008
由于一个老项目中需要用Java读写INI配置文件,找了一下,发现“由月”写的类相当的好用,省却了我不少事情,感谢“由月”,下面是代码:
- package mytools;
- import java.io.BufferedReader;
- import java.io.BufferedWriter;
- import java.io.FileReader;
- import java.io.FileWriter;
- import java.io.IOException;
- import java.util.regex.Matcher;
- import java.util.regex.Pattern;
- /** */ /**
- * 这是个配置文件操作类,用来读取和设置ini配置文件
- * @author 由月
- * @version 2004-08-18
- */
- public final class ConfigurationFile {
- /** */ /**
- * 从ini配置文件中读取变量的值
- * @param file 配置文件的路径
- * @param section 要获取的变量所在段名称
- * @param variable 要获取的变量名称
- * @param defaultValue 变量名称不存在时的默认值
- * @return 变量的值
- * @throws IOException 抛出文件操作可能出现的io异常
- */
- public static String getProfileString(
- String file,
- String section,
- String variable,
- String defaultValue)
- throws IOException {
- String strLine, value = “” ;
- BufferedReader bufferedReader = new BufferedReader( new FileReader(file));
- boolean isInSection = false ;
- try {
- while ((strLine = bufferedReader.readLine()) != null ) {
- strLine = strLine.trim();
- strLine = strLine.split( ” [;] ” )[ 0 ];
- Pattern p;
- Matcher m;
- p = Pattern.compile( ” file://[//s*.*//s*//] ” );
- m = p.matcher((strLine));
- if (m.matches()) {
- p = Pattern.compile( ” file://[//s* " + section + " file://s*//] ” );
- m = p.matcher(strLine);
- if (m.matches()) {
- isInSection = true ;
- } else {
- isInSection = false ;
- }
- }
- if (isInSection == true ) {
- strLine = strLine.trim();
- String[] strArray = strLine.split( ” = ” );
- if (strArray.length == 1 ) {
- value = strArray[ 0 ].trim();
- if (value.equalsIgnoreCase(variable)) {
- value = “” ;
- return value;
- }
- } else if (strArray.length == 2 ) {
- value = strArray[ 0 ].trim();
- if (value.equalsIgnoreCase(variable)) {
- value = strArray[ 1 ].trim();
- return value;
- }
- } else if (strArray.length > 2 ) {
- value = strArray[ 0 ].trim();
- if (value.equalsIgnoreCase(variable)) {
- value = strLine.substring(strLine.indexOf( ” = ” ) + 1 ).trim();
- return value;
- }
- }
- }
- }
- } finally {
- bufferedReader.close();
- }
- return defaultValue;
- }
- /** */ /**
- * 修改ini配置文件中变量的值
- * @param file 配置文件的路径
- * @param section 要修改的变量所在段名称
- * @param variable 要修改的变量名称
- * @param value 变量的新值
- * @throws IOException 抛出文件操作可能出现的io异常
- */
- public static boolean setProfileString(
- String file,
- String section,
- String variable,
- String value)
- throws IOException {
- String fileContent, allLine,strLine, newLine, remarkStr;
- String getValue;
- BufferedReader bufferedReader = new BufferedReader( new FileReader(file));
- boolean isInSection = false ;
- fileContent = “” ;
- try {
- while ((allLine = bufferedReader.readLine()) != null ) {
- allLine = allLine.trim();
- if (allLine.split( ” [;] ” ).length > 1 )
- remarkStr = ” ; “ + allLine.split( ” ; ” )[ 1 ];
- else
- remarkStr = “” ;
- strLine = allLine.split( ” ; ” )[ 0 ];
- Pattern p;
- Matcher m;
- p = Pattern.compile( ” file://[//s*.*//s*//] ” );
- m = p.matcher((strLine));
- if (m.matches()) {
- p = Pattern.compile( ” file://[//s* " + section + " file://s*//] ” );
- m = p.matcher(strLine);
- if (m.matches()) {
- isInSection = true ;
- } else {
- isInSection = false ;
- }
- }
- if (isInSection == true ) {
- strLine = strLine.trim();
- String[] strArray = strLine.split( ” = ” );
- getValue = strArray[ 0 ].trim();
- if (getValue.equalsIgnoreCase(variable)) {
- newLine = getValue + “ = “ + value + “ “ + remarkStr;
- fileContent += newLine + ” \r\n ” ;
- while ((allLine = bufferedReader.readLine()) != null ) {
- fileContent += allLine + ” \r\n ” ;
- }
- bufferedReader.close();
- BufferedWriter bufferedWriter =
- new BufferedWriter( new FileWriter(file, false ));
- bufferedWriter.write(fileContent);
- bufferedWriter.flush();
- bufferedWriter.close();
- return true ;
- }
- }
- fileContent += allLine + ” \r\n ” ;
- }
- } catch (IOException ex) {
- throw ex;
- } finally {
- bufferedReader.close();
- }
- return false ;
- }
- /** */ /**
- * 程序测试
- */
- public static void main(String[] args) {
- // String value = Config.getProfileString(”sysconfig.ini”, “Option”, “OracleDB”, “default”);
- // System.out.println(value);
- try {
- System.out.println(ConfigurationFile.setProfileString( ” d:/1.ini ” , ” Settings ” , ” SampSize ” , ” 111 ” ));
- } catch (IOException e) {
- System.out.println(e.toString());
- }
- }
- }
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Tags: INI, Java