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java根據ContentType獲取檔案字尾名

<dependency>
	<groupId>org.apache.tika</groupId>
	<artifactId>tika-core</artifactId>
	<version>1.14</version>
</dependency>
MimeTypes allTypes = MimeTypes.getDefaultMimeTypes();
MimeType jpeg = allTypes.forName("image/jpeg");
String ext = jpeg.getExtension(); // .jpg