Upload txt file garbage problem

1. Problem

Today, colleagues reflect the existence of the garbage problem has uploaded the txt file and then create a new txt file and found no problem, and finally with a colleague sent me a txt file tested it and found it really garbled. Baidu a little, it is caused by coding format txt file. Garbled display

2. Solution

method 1:

Modify the encoding format txt file, re-upload. Txt file and modify the new default encoding format. [Quote] arrangement
in accordance with the new method txt file encoding format settings online, found too complicated, if a customer's computers are set up, a waste of time.

Method 2

The use of the code to solve, we need a unified converted into a coded format.

Code section

Gets the current encoding format txt file

/** 
 * 判断文件的编码格式 
 * @param InputStream :is
 * @return 文件编码格式 
 * @throws Exception 
 */  
public static String getCharset(InputStream is) throws IOException {
        BufferedInputStream bin = new BufferedInputStream(is);
        int p = (bin.read() << 8) + bin.read();//读取文件头前16位  
        String code = null;
        switch (p) {
            case 0xefbb:
                code = "UTF-8";
                break;
            case 0xfffe:
                code = "Unicode";
                break;
            case 0xfeff:
                code = "UTF-16";
                break;
            default:
                code = "GB2312";
        }
        return code;
    }

Unified into utf-8 encoded files

/**
 * 解决txt乱码问题
 * @param is
 * @param targetFile 转换完成后的新文件
 * @param code 需要转换的文件的编码格式
 * @return File 
 * @throws IOException
 */
    public static File FileTurnUTF8(InputStream is, File targetFile, String code) throws IOException {
        if (!targetFile.exists()) {
            targetFile.createNewFile();
        }
        BufferedReader br = null;
        BufferedWriter bw = null;
        br = new BufferedReader(new InputStreamReader(is, code));
        bw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(targetFile), "UTF-8"));
        int i = 0;
        String str = "";
        while ((str = br.readLine()) != null) {
            byte[] bytes = str.getBytes("UTF-8");
            str = new String(bytes, 0, bytes.length);
            bw.write(str + "\r\n");
        }

        br.close();
        bw.close();
        return targetFile;
    }

Since the distal end is passed over MultipartFile type, after the conversion is completed also need to be converted into MultipartFile File.

/**
 * File 转 MultipartFile
 * 
 * @param file
 * @throws Exception
 */
    public MultipartFile fileToMultipartFile(File file) throws Exception {

        FileInputStream fileInput = new FileInputStream(file);
        MultipartFile toMultipartFile = new MockMultipartFile("file", file.getName(), "text/plain",
                        IOUtils.toByteArray(fileInput));
        toMultipartFile.getInputStream();
        return toMultipartFile;

    }