解决Base64编码图片转存问题与优化

public void test(){
String strImg = "data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAEBAQEBAQEBAQEBAQEB…6/rU+ldE8QRabbzSaqXuru6iH7i2+Z4nfkhg+MSAsQ2DjcOvGafsrdG/68v1PQpLT0SR//2Q==";
strImg = strImg.replace("data:image/jpeg;base64,", "");
String localPath = "D:\\myPhoto.jpg";
GenerateImage(strImg, localPath);
return;
}

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  
    }

    public static boolean GenerateImage(String imgStr, String savedImagePath) {//对字节数组字符串进行Base64解码并生成图片  
        if (imgStr == null) //图像数据为空  
            return false;
        //一定要去掉前缀data:image/jpeg;base64,不然会出现图片破损或者是打不开的情况。