使用tika对文件类型进行判断

org.apache.tika tika-core 1.18

Next, we’ll make use of the detect() method to resolve the type:
@Test
public void whenUsingTika_thenSuccess() {
File file = new File(“product.png”);
Tika tika = new Tika();
String mimeType = tika.detect(file);

assertEquals(mimeType, “image/png”);
}