nio FileChannel中文亂碼問題

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最近用nio讀取文件時，英文正常，讀取中文時會出現亂碼，經查能夠用Charset類來解決： 代碼以下： <div class="dp-highlighter bg_java"><div class="bar"><div class="tools">[java] <a href="#" class="ViewSource" title="view plain" onclick="dp.sh.Toolbar.Command('ViewSource',this);return false;">view plain</a> <a href="#" class="CopyToClipboard" title="copy" onclick="dp.sh.Toolbar.Command('CopyToClipboard',this);return false;">copy</a><div style="position: absolute; left: 225px; top: 410px; width: 16px; height: 16px; z-index: 99;"><embed id="ZeroClipboardMovie_1" src="https://csdnimg.cn/public/highlighter/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="16" height="16" name="ZeroClipboardMovie_1" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=1&width=16&height=16" wmode="transparent"></div><div style="position: absolute; left: 225px; top: 410px; width: 16px; height: 16px; z-index: 99;"><embed id="ZeroClipboardMovie_3" src="https://csdnimg.cn/public/highlighter/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="16" height="16" name="ZeroClipboardMovie_3" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=3&width=16&height=16" wmode="transparent"></div> <a href="#" class="PrintSource" title="print" onclick="dp.sh.Toolbar.Command('PrintSource',this);return false;">print</a><a href="#" class="About" title="?" onclick="dp.sh.Toolbar.Command('About',this);return false;">?</a></div></div><ol start="1" class="dp-j"><li class="alt">package com.example.demo;  </li><li class="">  </li><li class="alt">import java.io.FileNotFoundException;  </li><li class="">import java.io.RandomAccessFile;  </li><li class="alt">import java.nio.ByteBuffer;  </li><li class="">import java.nio.CharBuffer;  </li><li class="alt">import java.nio.channels.FileChannel;  </li><li class="">import java.nio.charset.Charset;  </li><li class="alt">import java.nio.charset.CharsetDecoder;  </li><li class="">  </li><li class="alt">public class NioDemo {  </li><li class="">    public static void main(String[] args) {  </li><li class="alt">        try {  </li><li class="">            Charset charset = Charset.forName("GBK");//Java.nio.charset.Charset處理了字符轉換問題。它經過構造CharsetEncoder和CharsetDecoder將字符序列轉換成字節和逆轉換。    </li><li class="alt">            CharsetDecoder decoder = charset.newDecoder();  </li><li class="">              </li><li class="alt">            RandomAccessFile raf = new RandomAccessFile("D:\\d\\test.txt", "rw");  </li><li class="">            FileChannel fc = raf.getChannel();  </li><li class="alt">              </li><li class="">            ByteBuffer buffer = ByteBuffer.allocate(512);   </li><li class="alt">            CharBuffer cb = CharBuffer.allocate(512  </li><li class="">                    );  </li><li class="alt">              </li><li class="">            int count = fc.read(buffer);  </li><li class="alt">            while (count != -1) {   </li><li class="">                System.out.println("count = "+count);   </li><li class="alt">                 buffer.flip();  </li><li class="">                 decoder.decode(buffer, cb, false);  </li><li class="alt">                 cb.flip();  </li><li class="">                 while (cb.hasRemaining()) {  </li><li class="alt">                        System.out.print(cb.get());  </li><li class="">                    }   </li><li class="alt">                 System.out.println();  </li><li class="">                buffer.clear();  </li><li class="alt">                cb.clear();  </li><li class="">                count = fc.read(buffer);  </li><li class="alt">            }  </li><li class="">            raf.close();  </li><li class="alt">        } catch (Exception e) {  </li><li class="">            // TODO Auto-generated catch block  </li><li class="alt">            e.printStackTrace();  </li><li class="">        }  </li><li class="alt">    }  </li><li class="">}  </li></ol></div><pre class="java" name="code" style="display: none;">package com.example.demo;java

import java.io.FileNotFoundException; import java.io.RandomAccessFile; import java.nio.ByteBuffer; import java.nio.CharBuffer; import java.nio.channels.FileChannel; import java.nio.charset.Charset; import java.nio.charset.CharsetDecoder;app

public class NioDemo { public static void main(String[] args) { try { Charset charset = Charset.forName("GBK");//Java.nio.charset.Charset處理了字符轉換問題。它經過構造CharsetEncoder和CharsetDecoder將字符序列轉換成字節和逆轉換。
CharsetDecoder decoder = charset.newDecoder();dom

RandomAccessFile raf = new RandomAccessFile("D:\\d\\test.txt", "rw");
		FileChannel fc = raf.getChannel();
		
		ByteBuffer buffer = ByteBuffer.allocate(512); 
		CharBuffer cb = CharBuffer.allocate(512
				);
		
		int count = fc.read(buffer);
		while (count != -1) { 
			System.out.println("count = "+count); 
			 buffer.flip();
			 decoder.decode(buffer, cb, false);
			 cb.flip();
			 while (cb.hasRemaining()) {
					System.out.print(cb.get());
				} 
			 System.out.println();
			buffer.clear();
			cb.clear();
			count = fc.read(buffer);
		}
		raf.close();
	} catch (Exception e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}
}

} </pre>test..txt文體以下：oop

<div class="dp-highlighter bg_plain"><div class="bar"><div class="tools">[plain] <a href="#" class="ViewSource" title="view plain" onclick="dp.sh.Toolbar.Command('ViewSource',this);return false;">view plain</a> <a href="#" class="CopyToClipboard" title="copy" onclick="dp.sh.Toolbar.Command('CopyToClipboard',this);return false;">copy</a><div style="position: absolute; left: 230px; top: 1309px; width: 16px; height: 16px; z-index: 99;"><embed id="ZeroClipboardMovie_2" src="https://csdnimg.cn/public/highlighter/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="16" height="16" name="ZeroClipboardMovie_2" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=2&width=16&height=16" wmode="transparent"></div><div style="position: absolute; left: 230px; top: 1309px; width: 16px; height: 16px; z-index: 99;"><embed id="ZeroClipboardMovie_4" src="https://csdnimg.cn/public/highlighter/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="16" height="16" name="ZeroClipboardMovie_4" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=4&width=16&height=16" wmode="transparent"></div> <a href="#" class="PrintSource" title="print" onclick="dp.sh.Toolbar.Command('PrintSource',this);return false;">print</a><a href="#" class="About" title="?" onclick="dp.sh.Toolbar.Command('About',this);return false;">?</a></div></div><ol start="1"><li class="alt">據英國《每日快報》報道，愛因斯坦提出理論稱，經過時間旅行前往將來的一種方式就是在宇宙中以光速旅行。這個普遍接受的理論稱，實現時間旅行必須打造一艘可以以光速飛行的太空船，而且進入太空。  </li><li class="">  </li><li class="alt">理論物理學家、哥倫比亞大學的briangreene稱：「你能夠打造出一艘宇宙飛船，進入太空而且以接近光速的速度旅行，轉個圈而後回來。設想一下你飛行了六個月，而後掉頭再飛六個月回來。」  </li></ol></div><pre class="plain" name="code" style="display: none;">據英國《每日快報》報道，愛因斯坦提出理論稱，經過時間旅行前往將來的一種方式就是在宇宙中以光速旅行。這個普遍接受的理論稱，實現時間旅行必須打造一艘可以以光速飛行的太空船，而且進入太空。this

理論物理學家、哥倫比亞大學的briangreene稱：「你能夠打造出一艘宇宙飛船，進入太空而且以接近光速的速度旅行，轉個圈而後回來。設想一下你飛行了六個月，而後掉頭再飛六個月回來。」</pre> spa

運行結果： <img src="https://img-blog.csdn.net/20160520134704456?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt=""> </div>.net