java 讀寫 ini 檔案

package com.ini;

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;

public class ConfigurationFile {

 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("//[//s*.*//s*//]");

    m = p.matcher((strLine));

    if (m.matches()) {

     p = Pattern.compile("//[//s*" + section + "//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;

 }

 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("//[//s*.*//s*//]");

    m = p.matcher((strLine));

    if (m.matches()) {

     p = Pattern.compile("//[//s*" + section + "//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;

 }

 public static void main(String[] args) {

  try {

   String value = ConfigurationFile.getProfileString("d:/1.ini", "Settings", "SampSize", "abc");

   System.out.println(value);

   String defaultValue  = ConfigurationFile.getProfileString("d:/1.ini", "Settings", "SampSizeddd", "abc");

   System.out.println(defaultValue);

   System.out.println(ConfigurationFile.setProfileString("d:/1.ini", "Settings", "SampSize", "111"));

  } catch (IOException e) {

   System.out.println(e.toString());

  }

 }

}