package zzzTest;

import java.io.FileInputStream;

import java.io.IOException;

import java.io.InputStream;

import java.util.*;

public class Base64Convert {

public static void main(String[] args) throws IOException {

String fileBase64Code = getBaseCode();

System.out.println(fileBase64Code);

}

/**

* 将文件转化为字节数组字符串，并对其进行Base64编码处理

* @return

*/

private static String getBaseCode() throws IOException {

InputStream in = null;

byte[] data = null;

try {

in = new FileInputStream("/Users/nibnait/Desktop/食安风险－店铺投诉2017.05.10.xlsx");

data = new byte[in.available()];

in.read(data);

} catch (Exception e) {

e.printStackTrace();

} finally {

in.close();

}

// 返回Base64编码过的字节数组字符串

return Base64.getEncoder().encodeToString(data);

}

}