java代码收藏:获取HttpServletRequest中某一前缀的参数

来源：互联网发布：钢琴键盘软件编辑：程序博客网时间：2024/05/20 20:18

public static Map getParametersStartingWith(ServletRequest request, String prefix)    {        Enumeration paramNames = request.getParameterNames();        Map params = new TreeMap();        if(prefix == null)prefix = "";        while(paramNames != null && paramNames.hasMoreElements())         {            String paramName = (String)paramNames.nextElement();            if("".equals(prefix) || paramName.startsWith(prefix))            {                String unprefixed = paramName.substring(prefix.length());                String values[] = request.getParameterValues(paramName);                if(values != null && values.length != 0)                    if(values.length > 1)                        params.put(unprefixed, values);                    else                        params.put(unprefixed, values[0]);            }        }        return params;    }