Java转换txt文件编码（GBK转UTF-8）

/*
*/

package com.blog.code.encoding;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;

/**
* TODO: 文件注释
* <p>
* <p>
* Version: V2.0
* <p>
* 作者: ljj
* <p>
* 日期: 2016年9月19日
* <p>
* 负责人: ljj
* <p>
* <p>
*/
public class ConvertEncoding
{
/**
*
* @param srcEncode 源编码格式
* @param targetEncode 目标编码格式
* @param srcPath 源路径
* @param targetPath 目标路径
* @param relativePath 相对于源路径的路径
* @param filter 文件类型过滤器
*/
public void convertEncoding(String srcEncode, String targetEncode, String srcPath,
String targetPath, String relativePath, FileFilter filter)
{
File srcFile = new File(srcPath);
if (srcFile.isFile())
{
try
{
File targetFile = new File(targetPath+ File.separatorChar + srcFile.getName());
if (!targetFile.exists())
{
targetFile.createNewFile();
}
BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(srcFile), "GBK"));
BufferedWriter writer = new BufferedWriter(new FileWriter(targetFile));
String line;
while ((line = reader.readLine()) != null)
{
writer.write(new String(line.getBytes(), targetEncode));
writer.newLine();
}
System.out.println(targetFile.getAbsolutePath());
reader.close();
writer.flush();
writer.close();
}
catch(Exception e)
{
e.printStackTrace();
}
}
else if (srcFile.isDirectory())
{
File[] files = srcFile.listFiles(filter);
// 建立目标目录
File targetFileDir = new File(targetPath + relativePath);
if (!targetFileDir.exists())
{
targetFileDir.mkdirs();
}
for (File f : files)
{
convertEncoding(srcEncode, targetEncode, f.getAbsolutePath(), targetFileDir.getAbsolutePath(), f.getAbsolutePath().substring(srcPath.length()), filter);
}
}
}

public static void main(String[] args)
{
ConvertEncoding ce = new ConvertEncoding();
ce.convertEncoding("GBK", "UTF-8", "E:/office_engine/src",
"E:/office_engine_utf8/src", "", new FileFilter()
{
public boolean accept(File pathname)
{
return pathname.isDirectory() || pathname.getName().endsWith("java");
}
});
}

}