gb2312编码文件转成utf8
package com.common;
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 = "D:/tt/sdg_dw_tbgamenamedim5.txt";
// String suffix = ".txt";
// String fromEncoding = "gbk";
// String toEncoding = "utf-8";
// change(directory, suffix,fromEncoding, toEncoding);
convertGBKtoUTF8(directory);
}
public static void convertGBKtoUTF8(String dir){
String suffix = ".txt";
String fromEncoding = "gbk";
String toEncoding = "utf-8";
change(dir, suffix,fromEncoding, toEncoding);
}
/**
* 将指定目录directory（包含子目录）下的指定后缀名为suffix的文件，统一从编码格式为fromEncoding更改为toEncoding
*/
public static void change(String directory, String suffix, String fromEncoding, String toEncoding) {
File dir = new File(directory);
if (dir.isDirectory()) {
File[] list = dir.listFiles();
for (int i = 0; i < list.length; i++) {
File file = list[i];
changeFileCoding(suffix, fromEncoding, toEncoding, file);
}
}else if(dir.isFile()){
changeFileCoding(suffix, fromEncoding, toEncoding, dir);
}
}
private static void changeFileCoding(String suffix, String fromEncoding,
String toEncoding, File file) {
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() + ".tmp");
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\n");
}
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);
}
}
}
