gb 2312符号化ファイルutf 8へ

   
   
   
   

    
    
    
    
import java.io.BufferedReader; 
    
    
    
    
import java.io.BufferedWriter; 
    
    
    
    
import java.io.File; 
    
    
    
    
import java.io.FileInputStream; 
    
    
    
    
import java.io.FileOutputStream; 
    
    
    
    
import java.io.InputStream; 
    
    
    
    
import java.io.InputStreamReader; 
    
    
    
    
import java.io.OutputStream; 
    
    
    
    
import java.io.OutputStreamWriter; 
    
    
    
    
 
    
    
    
    
public class ChangeEncoding { 
    
    
    
    
 
    
    
    
    
    public static void main(String[] args) { 
    
    
    
    
        String directory = "src"; 
    
    
    
    
        String suffix = ".java"; 
    
    
    
    
        String fromEncoding = "gb2312"; 
    
    
    
    
        String toEncoding = "utf-8"; 
    
    
    
    
        change(directory, suffix, fromEncoding, toEncoding); 
    
    
    
    
 
    
    
    
    
    } 
    
    
    
    
 
    
    
    
    
    /** 
    
    
    
    
     *  directory（ ） suffix ， fromEncoding toEncoding 
    
    
    
    
     */ 
    
    
    
    
    public static void change(String directory, String suffix, String fromEncoding, String toEncoding) { 
    
    
    
    
        File dir = new File(directory); 
    
    
    
    
        if (dir.isAbsolute() || dir.isDirectory()) { 
    
    
    
    
            File[] list = dir.listFiles(); 
    
    
    
    
            for (int i = 0; i 
    
    
    
    
                File file = list[i]; 
    
    
    
    
                if (file.isFile() && file.getName().toLowerCase().endsWith(suffix)) { 
    
    
    
    
                    System.out.println(file.getPath()); 
    
    
    
    
                    try { 
    
    
    
    
                        InputStream in = new FileInputStream(file); 
    
    
    
    
                        BufferedReader br = new BufferedReader(new InputStreamReader(in, fromEncoding)); 
    
    
    
    
                        File temp = new File(file.getPath() + ".txt"); 
    
    
    
    
                        OutputStream out = new FileOutputStream(temp); 
    
    
    
    
                        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(out, toEncoding)); 
    
    
    
    
                        String line = null; 
    
    
    
    
                        while ((line = br.readLine()) != null) { 
    
    
    
    
                            bw.write(line+"\r
"); 
    
    
    
    
                        } 
    
    
    
    
                        br.close(); 
    
    
    
    
                        in.close(); 
    
    
    
    
                        bw.close(); 
    
    
    
    
                        out.close(); 
    
    
    
    
                        file.delete(); 
    
    
    
    
                        temp.renameTo(file); 
    
    
    
    
 
    
    
    
    
                    } catch (Exception e) { 
    
    
    
    
                        // TODO Auto-generated catch block 
    
    
    
    
                        e.printStackTrace(); 
    
    
    
    
                    } 
    
    
    
    
 
    
    
    
    
                } else if (file.isDirectory()) { 
    
    
    
    
                    change(file.getPath(), suffix, fromEncoding, toEncoding); 
    
    
    
    
                } 
    
    
    
    
            } 
    
    
    
    
 
    
    
    
    
        } 
    
    
    
    
    } 
    
    
    
    
 
    
    
    
    
}