java request.getInputStream Chinese garbled solution

To request specified as UTF-8, Chinese amble perfect solution

/**
     *
     * 得到请求body字符串，一般用于content-type:application/json
     *
     */
    public static String getBodyString(HttpServletRequest request) {
        StringBuilder buffer = new StringBuilder("");
        try{
            request.setCharacterEncoding("UTF-8");
            BufferedReader reader=null;
            reader = new BufferedReader(new InputStreamReader(request.getInputStream(),"UTF-8"));
            String line=null;
            while((line = reader.readLine())!=null){
                buffer.append(line);
            }
        }catch (IOException e) {
            LogerHelper.WebLog(e);
        }
        return buffer.toString();
    }