java讀取ini文件

ini工具類;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;

public class IniReader
{
    // section        item     value
    private static Map<String, HashMap<String, String>> sectionsMap = new HashMap<String, HashMap<String, String>>();
    
    //      item    value
    private static HashMap<String, String> itemsMap = new HashMap<String, String>();
    
    private static String currentSection = "";
    
    /**
     * Load data from target file
     * @param file target file. It should be in ini format
     */
    private static void loadData(File file)
    {
        BufferedReader reader = null;
        try
        {
            
            reader = new BufferedReader(new InputStreamReader(new FileInputStream(file), "UTF-8"));
            String line = null;
            while ((line = reader.readLine()) != null)
            {
                line = line.trim();
                if ("".equals(line))
                    continue;
                if (line.startsWith("[") && line.endsWith("]"))
                {
                    // Ends last section
                    if (itemsMap.size() > 0 && !"".equals(currentSection.trim()))
                    {
                        sectionsMap.put(currentSection, itemsMap);
                    }
                    currentSection = "";
                    itemsMap = null;
                    
                    // Start new section initial
                    currentSection = line.substring(1, line.length() - 1);
                    itemsMap = new HashMap<String, String>();
                }
                else
                {
                    int index = line.indexOf("=");
                    if (index != -1)
                    {
                        String key = line.substring(0, index);
                        String value = line.substring(index + 1, line.length());
                        itemsMap.put(key, value);
                    }
                }
                //                System.out.println(line);
            }
            reader.close();
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        finally
        {
            if (reader != null)
            {
                try
                {
                    reader.close();
                }
                catch (IOException e1)
                {
                    e1.printStackTrace();
                }
            }
        }
    }
    
    public static String getValue(String section, String item, File file)
    {
        loadData(file);
        
        HashMap<String, String> map = sectionsMap.get(section);
        if (map == null)
        {
            return "No such section:" + section;
        }
        String value = map.get(item);
        if (value == null)
        {
            return "No such item:" + item;
        }
        return value;
    }
    
    public static String getValue(String section, String item, String fileName)
    {
        File file = new File(fileName);
        return getValue(section, item, file);
    }
    
    public static List<String> getSectionNames(File file)
    {
        List<String> list = new ArrayList<String>();
        loadData(file);
        Set<String> key = sectionsMap.keySet();
        for (Iterator<String> it = key.iterator(); it.hasNext();)
        {
            list.add(it.next());
        }
        return list;
    }
    
    public static Map<String, String> getItemsBySectionName(String section, File file)
    {
        loadData(file);
        return sectionsMap.get(section);
    }
}

具體使用：

* 文 件 名:  TestReadIni.java

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.List;

/**
 * <讀取ini文件中的內容>
 * <把源文件從GBK轉成UTF-8>
 * @author  zyy
 * @version  [版本號, 2012-11-17]
 * @see  [相關類/方法]
 * @since  [產品/模塊版本]
 */
public class TestReadIni
{
    public static void main(String[] args)
    {
        String srcFileName = "D:\\shMap.ini";
        String destFileName = "D:\\test.ini";
        
        try
        {
            transferFile(srcFileName, destFileName);
        }
        catch (IOException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
        File file = new File(destFileName);
        
        List<String> se = IniReader.getSectionNames(file);
        String distance = ""; // 離基站的距離
        for (int i = 0; i < se.size(); i++)
        {
            distance = IniReader.getValue(se.get(i), "POSITION", file);
            System.out.println("distance: " + distance);
        }
    }
    
    private static void transferFile(String srcFileName, String destFileName)
        throws IOException
    {
        String line_separator = System.getProperty("line.separator");
        FileInputStream fis = new FileInputStream(srcFileName);
        StringBuffer content = new StringBuffer();
        DataInputStream in = new DataInputStream(fis);
        BufferedReader d = new BufferedReader(new InputStreamReader(in, "GBK"));
        String line = null;
        while ((line = d.readLine()) != null)
            content.append(line + line_separator);
        d.close();
        in.close();
        fis.close();
        
        Writer ow = new OutputStreamWriter(new FileOutputStream(destFileName), "utf-8");
        ow.write(content.toString());
        ow.close();
    }
}