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java读取和修改ini配置文件实例代码如下：

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; /** * 这是个配置文档操作类，用来读取和配置ini配置文档 */ public final class ConfigurationFile { /** * 从ini配置文档中读取变量的值 * @param file 配置文档的路径 * @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 抛出文档操作可能出现的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("[url=file://[.*//]//[.*//]"); m = p.matcher((strLine)); if (m.matches()) { p = Pattern.compile("[url=file://[(.*)//]//[(.*)//]"); 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配置文档中变量的值 * @param file 配置文档的路径 * @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 抛出文档操作可能出现的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(); System.out.println("allLine == "+allLine); // if (allLine.split("[;]").length > 1) // remarkStr = ";" + allLine.split(";")[1]; // else // remarkStr = ""; // strLine = allLine.split(";")[0]; strLine = allLine; Pattern p; Matcher m; p = Pattern.compile("[url=file://[.*//]//[.*//]"); m = p.matcher((strLine)); if (m.matches()) { p = Pattern.compile("[url=file://[(.*)//]//[(.*)//]"); 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; newLine = getValue + " = " + value + " "; 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; } 本文来自: IT知道网(http://www.itwis.com) 详细出处参考：http://www.itwis.com/html/java/j2se/20080523/1549.html

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