想請問一下
我用JS fileReade讀了一些圖片
想直接送回servlet解碼並存於資料庫中
可是一直解碼失敗
實在看不出個端倪
想請求各位大大解惑 QQ

內文的jStr片段為(太長了故只貼個片段..)

data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAANIAAADcCAYAAAAFk/8yAAAKL2lDQ1BJQ0MgcHJvZmlsZQAAeNqdlndUVNcWh8 9d3qhzTDSGXqTLjCA9C4gHQRRGGYGGMoAwwxNbIioQEQREQFFkKCAAaOhSKyIYiEoqGAPSBBQYjCKqKhkRtZKfHl57 Xl98e939pn73P32XuftS4AJE8fLi8FlgIgmSfgB3o401eFR9Cx/QAGeIABpgAwWempvkHuwUAkLzcXerrICfyL3gwBSPy ZejpT6eD/0/SrFS AADIX8TmbE46S8T5Ik7KFKSK7TMipsYkihlGiZkvSlDEcmKOW Sln30W2VHM7GQeW8TinFPZyWwx94h4e4aQI2LER8QFGVxOpohvi1gzSZjMFfFbcWwyh5kOAIoktgs4rHgRm4iYxA8OdBHxcgBwpLgvOOYLFnCyBOJDuaSkZvO5cfECui5Lj25qbc2ge3IykzgCgaE/k5XI5LPpLinJqUxeNgCLZ/4sGXFt6aIiW5paW1oamhmZflGo/7r4NyXu7SK9CvjcM4jW94ftr/xS6gBgz

public boolean add(List<Photos> photos,String al_no) throws UnsupportedEncodingException{
        Base64.Decoder decoder = Base64.getDecoder();	
        for(Photos p : photos){
            p.setAl_no(al_no);
            String jStr = p.getSrc().replace("\\s+", "");
            jStr = jStr.split(",")[1];
            byte[] b = decoder.decode(jStr.getBytes("utf-8"));	
            p.setPhoto(b);		
        }		
        PhotosDAO dao = new PhotosDAO();
        boolean result = dao.executeInsert(photos);
        return result;
}

補上錯誤碼

七月 30, 2017 12:55:43 上午 org.apache.catalina.core.StandardWrapperValve invoke
嚴重: Servlet.service() for servlet [com.album.controller.PhotosActionCtrl] in context with path [/BA102G4] threw exception
java.lang.IllegalArgumentException: Illegal base64 character 20
	at java.util.Base64$Decoder.decode0(Unknown Source)
	at java.util.Base64$Decoder.decode(Unknown Source)