com.github.sylphlike.framework.utils.general.FileCharsetConverter Maven / Gradle / Ivy
package com.github.sylphlike.framework.utils.general;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.*;
import java.nio.charset.Charset;
import java.nio.charset.UnsupportedCharsetException;
/**
* 文件编码转换工具类
* time 10/09/2020 18:19 星期四 (dd/MM/YYYY HH:mm)
*
email [email protected]
* @author Gopal.pan
* @version 1.0.0
*/
public class FileCharsetConverter {
private static final Logger LOGGER = LoggerFactory.getLogger(FileCharsetConverter.class);
/**
* 将文件或文件夹下的所有文件转换成指定的编码集,不可以使用多级目录
*
time 10:58 2021/1/5 (HH:mm yyyy/MM/dd)
*
email [email protected]
* @param file 要转换的文件或文件夹全路径
* @param fromCharsetName 源文件的编码
* @param toCharsetName 要转换的编码
* @author Gopal.pan
*/
public static void convertCharset(String file,String fromCharsetName, String toCharsetName){
LOGGER.info("【framework】 文件编码集转换 file[{}],fromCharsetName[{}],toCharsetName[{}]",file,fromCharsetName,toCharsetName);
try {
File dirFile = new File(file);
if(dirFile.isDirectory()){
File[] files = dirFile.listFiles();
for (File singleFile: files ) {
convert(singleFile,fromCharsetName ,toCharsetName);
}
}else {
convert(dirFile,fromCharsetName ,toCharsetName);
}
} catch (Exception e) {
LOGGER.error("【framework-utils】文件编码集转换,失败",e);
}
}
/**
* 把指定文件转换成指定的编码
*
time 10:58 2021/1/5 (HH:mm yyyy/MM/dd)
*
email [email protected]
* @param file 要转换的文件
* @param fromCharsetName 源文件的编码
* @param toCharsetName 要转换的编码
* @throws Exception ex
* @author Gopal.pan
*/
public static void convert(File file, String fromCharsetName, String toCharsetName) throws Exception {
String fileContent = getFileContentFromCharset(file, fromCharsetName);
saveFile2Charset(file, toCharsetName, fileContent);
}
/**
* 以指定编码方式读取文件，返回文件内容
*
time 10:58 2021/1/5 (HH:mm yyyy/MM/dd)
*
email [email protected]
* @param file 要转换的文件
* @param fromCharsetName 源文件的编码
* @return java.lang.String
* @throws Exception ex
* @author Gopal.pan
*/
public static String getFileContentFromCharset(File file, String fromCharsetName) throws Exception {
if (!Charset.isSupported(fromCharsetName)) {
throw new UnsupportedCharsetException(fromCharsetName);
}
InputStream inputStream = new FileInputStream(file);
InputStreamReader reader = new InputStreamReader(inputStream, fromCharsetName);
char[] chs = new char[(int) file.length()];
reader.read(chs);
String str = new String(chs).trim();
reader.close();
return str;
}
/**
* 以指定编码方式写文本文件，存在会覆盖
*
time 10:57 2021/1/5 (HH:mm yyyy/MM/dd)
*
email [email protected]
* @param file 要写入的文件
* @param toCharsetName 要转换的编码
* @param content 文件内容
* @throws Exception e
* @author Gopal.pan
*/
public static void saveFile2Charset(File file, String toCharsetName, String content) throws Exception {
if (!Charset.isSupported(toCharsetName)) {
throw new UnsupportedCharsetException(toCharsetName);
}
OutputStream outputStream = new FileOutputStream(file);
OutputStreamWriter outWrite = new OutputStreamWriter(outputStream, toCharsetName);
outWrite.write(content);
outWrite.close();
}
}