字节数组、字符数组、字节缓冲、字符缓冲的相互转化工具类

package com.cgb.train.core.nio;

import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.Charset;
/**
 * 字符数组、字节数组、字符缓冲、字节缓冲的相互转换工具类
 * @author cgb
 *
 */
public class ByteCharUtils {

	
	/**
	 * 字节数组转换为字符缓冲
	 * @param bytes
	 * @param encoding
	 * @return
	 */
	public CharBuffer bytesToCharBuffer(byte[] bytes,String encoding){
		ByteBuffer byteBuffer=ByteBuffer.wrap(bytes);
		return Charset.forName(encoding).decode(byteBuffer);
		
	}
	/**
	 * 字符数组转换为字节缓冲
	 * @param chars
	 * @param encoding
	 * @return
	 */
	public static ByteBuffer charsToByteBuffer(char[] chars,String encoding){
		CharBuffer charBuffer=CharBuffer.wrap(chars);
		return Charset.forName(encoding).encode(charBuffer);
		
	}
	/**
	 * 字符串转换为字节缓冲
	 * @param str
	 * @param encoding
	 * @return
	 */
	public static ByteBuffer stringToByteBuffer(String str,String encoding){
		/*
		CharBuffer charBuffer=CharBuffer.wrap(str);
		 Charset.forName(encoding).encode(charBuffer);*/
		 
		 return Charset.forName(encoding).encode(str);
	}
	
	/**
	 * 将字符转为字节(编码)
	 * @param chars
	 * @param encoding
	 * @return
	 */
	public static byte[] getBytes (char[] chars,String encoding) {
		   Charset cs = Charset.forName (encoding);
		   CharBuffer cb = CharBuffer.allocate (chars.length);
		   cb.put (chars);
		   cb.flip ();
		   ByteBuffer bb = cs.encode (cb);
		   return bb.array();
		         }
	
	/**
	 * 将字节转为字符(解码)
	 * @param bytes
	 * @param encoding
	 * @return
	 */
		public static char[] getChars (byte[] bytes,String encoding) {
		      Charset cs = Charset.forName (encoding);
		      ByteBuffer bb = ByteBuffer.allocate (bytes.length);
		      bb.put (bytes);
		      bb.flip ();
		       CharBuffer cb = cs.decode (bb);
		  
		   return cb.array();
		}



}