上传图片的时候报编码错误 java.nio.charset.MalformedInputException: Input length = 1 ？

Question

一开始是没问题的，之后重装了系统换了个idea就报错了，bufferedReader.readLine()这行报了编码错误，普通的post请求带中文都没问题，只有上传图片的时候会报错

public XssHttpServletRequestWrapper(HttpServletRequest request) throws IOException {
        super(request);
        StringBuilder sBuffer = new StringBuilder();
        BufferedReader bufferedReader = request.getReader();
        String line;
        while ((line = bufferedReader.readLine()) != null) {
            sBuffer.append(line);
        }
        _body = sBuffer.toString();

    }