在Java中确定二进制/文本文件类型？

import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;

public class FileTypeDetector {

    public static void main(String[] args) throws IOException {
        String filePath = "path/to/your/file";
        Charset charset = detectFileType(filePath);
        if (charset != null) {
            System.out.println("文件类型：文本文件");
            System.out.println("字符集：" + charset);
        } else {
            System.out.println("文件类型：二进制文件");
        }
    }

    public static Charset detectFileType(String filePath) throws IOException {
        try (BufferedInputStream bis = new BufferedInputStream(new FileInputStream(filePath))) {
            byte[] buffer = new byte[4096];
            int bytesRead;
            boolean isText = true;
            Charset charset = null;
            while ((bytesRead = bis.read(buffer)) != -1) {
                for (int i = 0; i< bytesRead; i++) {
                    byte b = buffer[i];
                    if (b < 32 && b != 9 && b != 10 && b != 13) {
                        isText = false;
                        break;
                    }
                }
                if (!isText) {
                    break;
                }
                if (charset == null) {
                    charset = detectCharset(buffer);
                }
            }
            return isText ? charset : null;
        }
    }

    private static Charset detectCharset(byte[] buffer) {
        Charset charset = StandardCharsets.UTF_8;
        // 在这里添加自定义的字符集检测逻辑，例如根据文件的 BOM 头部判断字符集
        return charset;
    }
}