JavaUtil 处理Base64的图片上传

UploadImageBase64.java

package com.lee.util;

import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Random;

import sun.misc.BASE64Decoder;

public class UploadImageBase64 {

    static String basePath = System.getProperty("searchData");

    public static String uploadImage(String imageFile) {
        // 通过base64来转化图片
        imageFile = imageFile.replaceAll("data:image/jpeg;base64,", "");
        BASE64Decoder decoder = new BASE64Decoder();
        // Base64解码
        byte[] imageByte = null;
        try {
            imageByte = decoder.decodeBuffer(imageFile);
            for (int i = 0; i < imageByte.length; ++i) {
                if (imageByte[i] < 0) {// 调整异常数据
                    imageByte[i] += 256;
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        // 生成文件名
        String files = new SimpleDateFormat("yyyyMMddHHmmssSSS").format(new Date())
                + (new Random().nextInt(9000) % (9000 - 1000 + 1) + 1000) + ".png";
        // 生成文件路径
        String filename = basePath + "assets\\images\\" + files;
//        System.out.println(filename);
        try {
            // 生成文件
            File newimageFile = new File(filename);
            newimageFile.createNewFile();
            if (!newimageFile.exists()) {
                newimageFile.createNewFile();
            }
            OutputStream imageStream = new FileOutputStream(newimageFile);
            imageStream.write(imageByte);
            imageStream.flush();
            imageStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        }

        return files;
    }
}