java批量将gbk的乱码文件转换到utf8

java批量将gbk的乱码文件转换到utf8

package com.iteye.niewj.util;
import java.io.BufferedReader;
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.PrintWriter;
/**
 * 将gbk的代码放到srcDir之下，转码置destDir之下，暂不支持srcDir之下有目录，有需要再添加
 * @author niewj
 * @2012-6-1
 */
public class UTF8Parser {
	/**
	 * @author niewj
	 * @since 2012-6-1 
	 */
	static File srcDir = new File("D:/prj/java/niewj_oy/eclipse_swt_src/src/swt/");
	static File  destDir= new File("D:/prj/java/niewj_oy/eclipse_swt_src/src/swt_cp/");
	
	public static void main(String[] args) {
		//1.判断是目录
		if(!srcDir.isDirectory()){
			return;
		}
		//2.遍历所有目录
		File[] fs = srcDir.listFiles();
		
		//创建目标目录
		if(!destDir.exists()){
			destDir.mkdirs();
		}
		
		try {
			new UTF8Parser().parse(fs);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	/**
	 * 目录就迭代遍历；文件就重编码
	 * @author niewj
	 * @since 2012-6-1 
	 */
	private void parse(File[] fs) throws IOException {
		for(File file:fs){
			if(!file.isDirectory()){
				File destFile = new File(destDir,file.getName());
				parse2UTF_8(file,destFile);
			}else{
				parse(file.listFiles());
			}
		}
	}
	/**
	 * @author niewj
	 * @since 2012-6-1 
	 */
	private void parse2UTF_8(File file,File destFile) throws IOException {
		StringBuffer msg = new StringBuffer();
		//读写对象
		PrintWriter ps = new PrintWriter(new OutputStreamWriter(new FileOutputStream(destFile,false),"utf8"));
		BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(file),"gbk"));
		
		//读写动作
		String line = br.readLine();
		while(line!=null){
			msg.append(line).append("\r\n");
			line = br.readLine();
		}
		ps.write(msg.toString());
		br.close();
		ps.flush();
		ps.close();
	}
}