Java-图片与Base64编码互转

<dependency>
    <groupId>com.google.api-client</groupId>
    <artifactId>google-api-client</artifactId>
    <version>1.32.2</version>
</dependency>

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import com.google.api.client.util.Base64;
public class Base64Utils {
    /**
     * 图片转化成base64字符串
     * @param imgPath
     * @return string
     */
    public static String imageToBase64(String imgPath) {
        String imgFile = imgPath;// 待处理的图片
        InputStream in = null;
        byte[] data = null;
        String encode = null; // 返回Base64编码过的字节数组字符串
        // 对字节数组Base64编码
        try {
            // 读取图片字节数组
            in = new FileInputStream(imgFile);
            data = new byte[in.available()];
            in.read(data);
            encode = Base64.encodeBase64String(data);
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                in.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
        return encode;
    }
    /**
     * base64字符串转化成图片
     * @param imgData 图片Base64编码         
     * @param imgFilePath 存放到本地路径          
     * @return bool
     * @throws IOException
     */
    public static boolean base64ToImage(String imgData, String imgFilePath) throws IOException {
        if (imgData == null) // 图像数据为空
            return false;
        OutputStream out = null;
        try {
            out = new FileOutputStream(imgFilePath);
            // Base64解码
            byte[] b = Base64.decodeBase64(imgData);
            for (int i = 0; i < b.length; ++i) {
                if (b[i] < 0) {// 调整异常数据
                    b[i] += 256;
                }
            }
            out.write(b);
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            out.flush();
            out.close();
            return true;
        }
    }
}