NIO 中文乱码问题的解决代码实现

之前在网上查询了很多关于解决NIO中文乱码的问题，仁者见仁智者见智，不过就找到的几种方法实现都太繁琐了，稍微研究了下NIO源码，以下是我自己的一种实现，偷懒用最简单的代码去实现是我的习惯！

Demo：

String backupPath = "备份文件夹的路径";

backupPath += File.separator + "ERROR";

File file = new File(filePath);

File backupDirectory = new File("需要复制的文件夹全路径");

if(!backupDirectory.exists()) {
    backupDirectory.mkdir();
}
//创建临时文件
File backupFile = new File(backupPath + File.separator + file.getName());

backupFile.createNewFile();

FileOutputStream fos = new FileOutputStream(backupFile, false);

FileInputStream fis = new FileInputStream(file);
//获取输入通道
FileChannel fc_in = fis.getChannel();
//获取输出通道
FileChannel fc_out = fos.getChannel();
//创建缓冲区
ByteBuffer buffer = ByteBuffer.allocate(102400);  //这里用1 或者 一个很大的数 比如1024比较小的数也是有几率出现乱码的

CharBuffer charBuffer = CharBuffer.allocate(102400);

char[] charCache = null;

//字符编码
Charset charset = Charset.forName("GBK");

CharsetDecoder charDecoder = charset.newDecoder();

//读取数据到缓冲区
while((fc_in.read(buffer)) != -1) {
    buffer.flip();

    charDecoder.decode(buffer, charBuffer, true);

    charBuffer.flip();

    charCache =  new char[charBuffer.length()];

    while (charBuffer.hasRemaining()) {

        charBuffer.get(charCache);

        String str = new String(charCache);

        System.out.println(str);

        buffer = ByteBuffer.wrap(str.getBytes());
    }

    fc_out.write(buffer);

    charBuffer.clear();

    buffer.clear();

}

fis.close();

fos.close();

		String backupPath = "备份文件夹的路径";
	backupPath += File.separator + "ERROR";
	
	File file = new File(filePath);
	
	File backupDirectory = new File("需要复制的文件夹全路径");
	
	if(!backupDirectory.exists()) {
		backupDirectory.mkdir();
	}
	//创建临时文件
	File backupFile = new File(backupPath + File.separator + file.getName());
	
	backupFile.createNewFile();
	
	FileOutputStream fos = new FileOutputStream(backupFile, false);
	
	FileInputStream fis = new FileInputStream(file);
	//获取输入通道
	FileChannel fc_in = fis.getChannel();
	//获取输出通道
	FileChannel fc_out = fos.getChannel();
	//创建缓冲区
	ByteBuffer buffer = ByteBuffer.allocate(102400);  //这里用1 或者 一个很大的数 比如1024比较小的数也是有几率出现乱码的
	
	CharBuffer charBuffer = CharBuffer.allocate(102400);
	
	char[] charCache = null;
	
	//字符编码
	Charset charset = Charset.forName("GBK");
	
	CharsetDecoder charDecoder = charset.newDecoder();
	
	//读取数据到缓冲区
	while((fc_in.read(buffer)) != -1) {
		buffer.flip();
		
		charDecoder.decode(buffer, charBuffer, true);
		
		charBuffer.flip();
		
		charCache =  new char[charBuffer.length()]; 
		
		while (charBuffer.hasRemaining()) {
			
			charBuffer.get(charCache);
			
			String str = new String(charCache);
			
			System.out.println(str);
			
			buffer = ByteBuffer.wrap(str.getBytes());
		}
		
		fc_out.write(buffer);
		
		charBuffer.clear();
		
		buffer.clear();
		
	}
	
	fis.close();
	
	fos.close();</pre><br><br><p></p>