在Java中将图像编码为不带文件名的Base64

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Base64;

public class ImageToBase64 {
    public static void main(String[] args) {
        String imagePath = "path/to/image.jpg"; // 图像文件路径

        try {
            // 读取图像文件
            File file = new File(imagePath);
            FileInputStream fis = new FileInputStream(file);
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            byte[] buffer = new byte[1024];
            int bytesRead;
            while ((bytesRead = fis.read(buffer)) != -1) {
                baos.write(buffer, 0, bytesRead);
            }
            fis.close();

            // 将图像数据编码为Base64字符串
            byte[] imageBytes = baos.toByteArray();
            String base64Image = Base64.getEncoder().encodeToString(imageBytes);

            // 输出Base64字符串
            System.out.println("Base64 image: " + base64Image);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}