判断文件字符集

            <!-- 判断文件编码格式 -->
                <dependency>
                        <groupId>org.apache.any23</groupId>
                        <artifactId>apache-any23-encoding</artifactId>
                        <version>1.1</version>
                </dependency>   




 public static Charset guessCharset(InputStream is) throws IOException {
        return Charset.forName(new TikaEncodingDetector().guessEncoding(is));
    }