图片,base64 互转

import sun.misc.BASE64Decoder;

import java.io.FileOutputStream;
import java.io.OutputStream;

/**
 * @author ydy
 * @version 2017/12/29  14:02
 */
public class ImageUtils {
    /**
		 *"data:image/jpeg;base64," 解码之前这个得去掉。
     * 将base64编码字符串转换为图片
     * @param imgStr base64编码字符串
     * @param path 图片路径 - 具体到文件,即自行定义文件名
     * @return
     */
    public static boolean generateImage(String imgStr, String path) {
        if (imgStr == null) {
            return false;
        }
        BASE64Decoder decoder = new BASE64Decoder();
        try {
            //解密
            byte[] b = decoder.decodeBuffer(imgStr);
            for (int i = 0; i < b.length; i++) {
                if (b[i] < 0) {
                    b[i] += 256;
                }
            }
            OutputStream out = new FileOutputStream(path);
            out.write(b);
            out.flush();
            out.close();
            return true;
        } catch (Exception e) {
            return false;
        }
    }

		/**
 * @Description: 根据图片地址转换为base64编码字符串
 * @Author:
 * @CreateTime:
 * @return
 */
public static String getImageStr(String imgFile) {
    InputStream inputStream = null;
    byte[] data = null;
    try {
        inputStream = new FileInputStream(imgFile);
        data = new byte[inputStream.available()];
        inputStream.read(data);
        inputStream.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
    // 加密
    BASE64Encoder encoder = new BASE64Encoder();
    return encoder.encode(data);
}

}