base64生成图片——图片转换变成base64

如题。

下面上货。

package com.xueyou.demo;
import org.apache.commons.lang3.StringUtils;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
import java.io.*;
import java.util.UUID;
public class Base64Utils {
    /**
     * 根据base64编码生成图片，保存在Path中
     *
     * @param base64Code
     * @param filePath
     */
    public static boolean base64ToPic(String base64Code, String filePath) {
        if (base64Code == null) {
            return false;
        }
        //文件不存在
        File existsFilePath = new File(filePath);
        if (!existsFilePath.exists()) {
            existsFilePath.mkdir();
        }
        String handledBase64Code = "";
        if (StringUtils.contains(base64Code, "base64,")) {
            handledBase64Code = StringUtils.substringAfter(base64Code, "base64,");
        }
        BASE64Decoder decoder = new BASE64Decoder();
        try {
            //Base64解码
            byte[] b = decoder.decodeBuffer(handledBase64Code);
            for (int i = 0; i < b.length; ++i) {
                if (b[i] < 0) {//调整异常数据
                    b[i] += 256;
                }
            }
            //生成jpeg图片
            String path = filePath + "/" + UUID.randomUUID() + ".jpg";
            OutputStream out = new FileOutputStream(path);
            out.write(b);
            out.flush();
            out.close();
            return true;
        } catch (Exception e) {
            return false;
        }
    }
    /**
     * 图片生成base64编码
     * @param imgPath
     * @return
     */
    public static String PicToBase64(String imgPath) {
        String result = "";
        File imgFile = new File(imgPath);
        if(!imgFile.exists()){
            System.out.println("非法路径");
            return result;
        }
        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
    }
}

调用方式：

package com.xueyou.demo;
/**
 * Hello world!
 */
public class App {
    public static void main(String[] args) {
        System.out.println("Hello World!");
        String base64Code = "data:image/jpeg;base64,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";
        //调用
        /*if(Base64Utils.base64ToPic(base64Code,"e:/333")){
            System.out.println("ok");
        }else{
            System.out.println("error");
        }*/
        //调用
        System.out.println(Base64Utils.PicToBase64("E:/702.jpg"));
    }
}