#思路
前台传以data:image/jpeg;base64,开头的base64编码的String字符串，后台接收字符串以后先进行base64解码 .decodeBuffer()，转换成二进制编码，然后使用字节输出流FileOutputStream（）将文件保存到指定目录下。
报下面的错误
Error parsing HTTP request header
Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level.
要修改tomcat下sever.xml，header的大小
<Connector URIEncoding="UTF-8" connectionTimeout="20000" port="8000" protocol="HTTP/1.1" redirectPort="8443" maxHttpHeaderSize="10485760"/>
将base64编码转成二进制
// 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(); }
将二进制转成file文件
// 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 = Constant.UPLOAD_PATH + files;try {// 生成文件File imageFile = new File(filename);imageFile.createNewFile();if(!imageFile.exists()){imageFile.createNewFile();}OutputStream imageStream = new FileOutputStream(filename);imageStream.write(imageByte);imageStream.flush();imageStream.close();} catch (Exception e) {e.printStackTrace();}
