从httpServletRequest里取map来转成map

 

public static Map<String, String> toStrMap(HttpServletRequest request) {
        Map<String, String[]> rawMap = request.getParameterMap();
        Map<String, String> map = new HashMap<>(rawMap.size());
        rawMap.forEach((k, v) -> map.put(k, v.length > 0 ? v[0] : null));
        return map;
    }