Java_读取INI配置文件

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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;

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/**
 * 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("\\[\\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;
}

设置

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/**
 * 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";
        }
    }
    catch (IOException ex)
    {
        throw ex;
    }
    finally
    {
        bufferedReader.close();
    }
    return false;
}

主方法测试

INI文件内容：

[Settings]
SampSize =8
[Settings2]
ID=4
;name=zhang

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public static void main (String [] args)
{

    // 设置
     try
    {
        System.out.println(ConfigurationFile.setProfileString("d:/1.ini" , "Settings" , "SampSize" , "111"));
    }
    catch (IOException e)
    {
        System.out.println(e.toString());
    }

    // 读取
    String value = null;
    String value2=null;
    try
    {
        value = ConfigurationFile.getProfileString("d:/1.ini" , "Settings" , "SampSize" , "default");
        value2 = ConfigurationFile.getProfileString("d:/1.ini" , "Settings2" , "ID" , "default");
    }
    catch (IOException e1)
    {
        e1.printStackTrace();
    }
    System.out.println(value + "  " + value2);
}

说明

1.代码为由月编写，访问原文：用JAVA读取INI配置文件，访问ta的CSDN博客：CSDN博客

2.INI文件格式见【主方法测试】下的INI文件内容，其中【分号】的意思是注释该行，如果读取该字段，将会返回你设置的默认值，即找不到相应的Key。

3.段名称区分大小写，变量名(Key)不区分大小写

4.么有了~