base64图片上传

图片转base64字符串网站：http://imgbase64.duoshitong.com/

// 前缀，比如data:image/jpeg;base64,
String prefix = imgBase64.substring(0, imgBase64.indexOf(",") + 1);
// 替换前缀为空
imgBase64 = imgBase64.replace(prefix, "");

byte[] bytes = new BASE64Decoder().decodeBuffer(imgBase64);
InputStream inputStream = new ByteArrayInputStream(bytes);

//处理inputStream
......