package com.xcong.excoin.utils;
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import cn.hutool.core.util.StrUtil;
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import sun.misc.BASE64Decoder;
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import sun.misc.BASE64Encoder;
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import java.io.*;
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public class ImageUtils {
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public static boolean base64ToImg(String base64Str, String imgPath) {
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// 图像数据为空
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if (StrUtil.isBlank(base64Str)) {
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return false;
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}
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BASE64Decoder decoder = new BASE64Decoder();
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try {
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// Base64解码
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byte[] bytes = decoder.decodeBuffer(base64Str);
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for (int i = 0; i < bytes.length; ++i) {
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// 调整异常数据
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if (bytes[i] < 0) {
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bytes[i] += 256;
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}
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}
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// 生成jpeg图片
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OutputStream out = new FileOutputStream(imgPath);
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out.write(bytes);
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out.flush();
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out.close();
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return true;
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} catch (Exception e) {
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return false;
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}
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}
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public static String imgToBase64(String imgPath) {
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byte[] data = null;
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// 读取图片字节数组
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try {
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InputStream in = new FileInputStream(imgPath);
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data = new byte[in.available()];
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in.read(data);
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in.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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// 对字节数组Base64编码
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BASE64Encoder encoder = new BASE64Encoder();
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// 返回Base64编码过的字节数组字符串
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return encoder.encode(data);
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}
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public static void main(String[] args) {
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base64ToImg(imgToBase64("/Users/helius/Pictures/123.jpg"), "/Users/helius/Desktop/123.jpg");
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}
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}
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