文件编码格式转换

package com.test;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;

/**
* 类描述： 批量转换文件编码格式
*/
public class EncodeConverter {

// 源文件编码
private static String srcEncode = "gbk";
// 输出文件编码
private static String desEncode = "utf-8";

/**
* @param infile 源文件路径
* @param outfile 输出文件路径
* @param from 源文件编码
* @param to 目标文件编码
* @throws IOException
* @throws UnsupportedEncodingException
*/
public static void convert(String infile, String outfile, String from, String to) throws IOException, UnsupportedEncodingException {
//BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream(infile), from));
//PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outfile), to)));
InputStream ins = new FileInputStream(infile);
OutputStream ous = new FileOutputStream(outfile);
/*String reading;
while ((reading = in.readLine()) != null) {
out.println(reading);
}*/
byte[] b = new byte[(int)new File(infile).length()];
while(ins.read(b, 0, b.length) != -1) {
String tmp = new String(b,from);
ous.write(tmp.getBytes(to));
}
ous.close();
ins.close();
}

public static void main(String[] args) {
if(!(args.length == 2)){
System.out.println("[ 文件编码转换错误 ]====================参数个数不正确");
}
String infile = args[0];
String outfile = args[1];
File file = new File(infile);
if(!file.exists()) {
System.out.println("[ 文件编码转换错误 ]====================" + file.getAbsolutePath()+" 不存在====================");
}
try {
convert(infile, outfile, srcEncode, desEncode);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}