Java 读取 INI 文件的示例

最新推荐文章于 2026-01-06 12:00:34 发布

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文章标签：

#java #ini #properties #null #string #jdk

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该博客展示了一个用Java编写的Ini文件读取器类IniReader。它通过BufferedReader读取文件内容，使用正则表达式解析行，将Ini文件的节和键值对存储在HashMap和Properties中，并提供getValue方法获取指定节和键的值，还给出了使用示例。

/*
*  @(#)  IniReader.java
*  Created  on  2004-10-14
*  Created  by  James  Fancy
*/

import  java.io.BufferedReader;
import  java.io.FileReader;
import  java.io.IOException;
import  java.util.HashMap;
import  java.util.Properties;

/**
*  @author  James  Fancy
*/
public  class  IniReader  {

       protected  HashMap  sections  =  new  HashMap();
       private  transient  String  currentSecion;
       private  transient  Properties  current;

       public  IniReader(String  filename)  throws  IOException  {
               BufferedReader  reader  =  new  BufferedReader(new  FileReader(filename));
               read(reader);
               reader.close();
       }

       protected  void  read(BufferedReader  reader)  throws  IOException  {
               String  line;
               while  ((line  =  reader.readLine())  !=  null)  {
                       parseLine(line);
               }
       }

       protected  void  parseLine(String  line)  {
               line  =  line.trim();
               if  (line.matches("//[.*//]"))  {
               //  如果是  JDK  1.4(不含1.4)以下版本，修改为
               //  if  (line.startsWith("[")  &&  line.endsWith("]"))  {
                       if  (current  !=  null)  {
                               sections.put(currentSecion,  current);
                       }
                       currentSecion  =  line.replaceFirst("//[(.*)//]",  "$1");
                       //  JDK  低于  1.4  时
                       //  currentSection  =  line.substring(1,  line.length()  -  1);
                       current  =  new  Properties();
               }  else  if  (line.matches(".*=.*"))  {
               //  JDK  低于  1.4  时
               //  }  else  if  (line.indexOf('=')  >=  0)  {
                       int  i  =  line.indexOf('=');
                       String  name  =  line.substring(0,  i);
                       String  value  =  line.substring(i  +  1);
                       current.setProperty(name,  value);
               }
       }

       public  String  getValue(String  section,  String  name)  {
               Properties  p  =  (Properties)  sections.get(section);

               if  (p  ==  null)  {
                       return  null;
               }

               String  value  =  p.getProperty(name);
               return  value;
       }

}

示例：
       public  static  void  main(String[]  args)  throws  IOException  {
               IniReader  reader  =  new  IniReader("E://james//win.ini");
               System.out.println(reader.getValue("MCI  Extensions.BAK",  "asf"));
       }