JAVA判断文件的内容类型

Program to demonstrate Java 7 new feature : Determining the file content type.

package com.hubberspot.nio;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

public class FileContentType {

public static void main(String[] args) {

printContentType("D:/Downloads/java.txt");
printContentType("D:/Downloads/java.ppt");
printContentType("D:/Downloads/java.doc");
printContentType("D:/Downloads/java.jar");

}

private static void printContentType(String pathToFile) {

Path path = Paths.get(pathToFile);
String contentType = null;
try {
contentType = Files.probeContentType(path);
} catch (IOException e) {

e.printStackTrace();
}
System.out.println("File content type is : " + contentType);

}

}