Implementation of the solution to the problem of NIO Chinese garbled characters

I have inquired a lot about the problem of solving NIO Chinese garbled characters on the Internet before. The benevolent sees the benevolent and the wise sees the wisdom. However, the implementation of the several methods found are too cumbersome. After a little research on the NIO source code, the following is my own implementation. The simplest code to implement is my habit!

Demo：

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1. String backupPath =  "Path to backup folder" ;  
2.   
3. backupPath += File.separator + "ERROR";  
4.   
5. File file = new File(filePath);  
6.   
7. File backupDirectory =  new  File( "The full path of the folder to be copied" );  
8.   
9. if(!backupDirectory.exists()) {  
10.     backupDirectory.mkdir();  
11. }  
12. //create temporary file  
13. File backupFile = new File(backupPath + File.separator + file.getName());  
14.   
15. backupFile.createNewFile();  
16.   
17. FileOutputStream fos = new FileOutputStream(backupFile, false);  
18.   
19. FileInputStream fis = new FileInputStream(file);  
20. //get the input channel  
21. FileChannel fc_in = fis.getChannel();  
22. //get the output channel  
23. FileChannel fc_out = fos.getChannel();  
24. //create buffer  
25. ByteBuffer buffer = ByteBuffer.allocate( 102400 );   //Use 1 or a very large number here, such as 1024, which is a relatively small number, and there is a chance of garbled characters  
26.   
27. CharBuffer charBuffer = CharBuffer.allocate(102400);  
28.   
29. char[] charCache = null;  
30.   
31. //Character Encoding  
32. Charset charset = Charset.forName("GBK");  
33.   
34. CharsetDecoder charDecoder = charset.newDecoder();  
35.   
36. //read data into buffer  
37. while((fc_in.read(buffer)) != -1) {  
38.     buffer.flip();  
39.       
40.     charDecoder.decode(buffer, charBuffer, true);  
41.       
42.     charBuffer.flip();  
43.       
44.     charCache =  newchar[charBuffer.length()];    
45.       
46.     while (charBuffer.hasRemaining()) {  
47.           
48.         charBuffer.get(charCache);  
49.           
50.         String str = new String(charCache);  
51.           
52.         System.out.println(str);  
53.           
54.         buffer = ByteBuffer.wrap(str.getBytes());  
55.     }  
56.       
57.     fc_out.write(buffer);  
58.       
59.     charBuffer.clear();  
60.       
61.     buffer.clear();  
62.       
63. }  
64.   
65. fis.close();  
66.   
67. 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();

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1.