java读写ini配置文件

/**
	 * 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;
		boolean isInSection = false;
		bufferedReader = new BufferedReader(new FileReader(file));
		
		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;
	}

	/**
	　　* 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("\\[\\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";
			}	
		}
		finally
		{
			bufferedReader.close();
		}
		return false;
	}