图片Base64字符串互转

ゝ一世哀愁。 2022-04-22 16:42 406阅读 0赞

图片Base64字符串互转

函数封装

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
import java.io.*;
public class ImageBase64Utils {
    public static String getImageStr(String imgFile) {
        InputStream in = null;
        byte[] data = null;
        try {
            in = new FileInputStream(imgFile);
            data = new byte[in.available()];
            in.read(data);
            in.close();
        } catch (IOException e) {
            return null;
        }
        BASE64Encoder encoder = new BASE64Encoder();
        return encoder.encode(data);
    }
    public static boolean getImageByBase64Str(String base64str, String savepath) {
        if (base64str == null)
            return false;
        BASE64Decoder decoder = new BASE64Decoder();
        try {
            byte[] b = decoder.decodeBuffer(base64str);
            for (int i = 0; i < b.length; ++i) {
                if (b[i] < 0) {//调整异常数据
                    b[i] += 256;
                }
            }
            OutputStream out = new FileOutputStream(savepath);
            out.write(b);
            out.flush();
            out.close();
            return true;
        } catch (Exception e) {
            return false;
        }
    }
}