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??? 在java中,配置文件一般主要是两种形式:xml文件或者property文件。但大部分人都习惯使用ini文件 ,而且ini文件的分节以及注释功能,比起xml,也是易懂易用的。
??? 在vc中类库中有读写ini文件的标准函数。在dephi或其他语言中,也可以用windows的api函数来读写ini文件。但在java中似乎没有现成的类和方法可供使用。虽然java可以通过加载dll文件的方法来调用windows的api,但总觉得不够正宗。 ??? 于是自己写了个读写ini配置文件的类,供大家参考。 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(" ]"); ????m = p.matcher((strLine)); ????if (m.matches()) { ?????p = Pattern.compile(" *" + section + " ]"); ?????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(" ]"); ????m = p.matcher((strLine)); ????if (m.matches()) { ?????p = Pattern.compile(" *" + section + " ]"); ?????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()); ??} ?? ?} }转载地址:http://stcdi.baihongyu.com/