图片转化成base64字符串

package demo;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

import java.io.*;

public class BASE64DecoderUtil {
    public static void main(String[] args) {
        String s = GetImageStr("c:/test/pic.jpg");
        System.out.println(s);
    }
    //图片转化成base64字符串
    public static String GetImageStr(String imgFile) {
        //将图片文件转化为字节数组字符串,并对其进行Base64编码处理
        InputStream in = null;
        byte[] data = null; //读取图片字节数组
        try {
            in = new FileInputStream(imgFile);
            data = new byte[in.available()];
            in.read(data); in.close();
        } catch (IOException e) {
            e.printStackTrace();
        } //对字节数组Base64编码
         BASE64Encoder encoder = new BASE64Encoder();
        return encoder.encode(data);//返回Base64编码过的字节数组字符串  }
    }
 //base64字符串转化成图片
 public static boolean GenerateImage(String base64str,String savepath) {
        //对字节数组字符串进行Base64解码并生成图片
     if (base64str == null) //图像数据为空
         return false;
     System.out.println("开始解码");
     BASE64Decoder decoder = new BASE64Decoder();
     try {
         //Base64解码
          byte[] b = decoder.decodeBuffer(base64str);
         System.out.println("解码完成");
         for(int i=0;i<b.length;++i) {
             if(b[i]<0) {//调整异常数据
                 b[i]+=256;
             }
         } // System.out.println("开始生成图片"); //生成jpeg图片
          OutputStream out = new FileOutputStream(savepath); out.write(b); out.flush(); out.close();
          return true;
     } catch (Exception e) {
         return false;
     }
    }
 }

猜你喜欢

转载自www.cnblogs.com/cuixiaomeng/p/10109349.html