将request.getParameterMap()转换成可操作的普通Map

在java web项目中虽然可以通过request.getParameterMap()很轻松的获得参数Map,但得到的Map和普通Map是不一样的,是被锁定的,不能像操作常规Map那样进行put、get等操作,该方法将得到参数Map返回为可操作的普通Map
 
 

代码片段(1)[全屏查看所有代码]

1. [代码][Java]代码     

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/**
 * 从request中获得参数Map,并返回可读的Map
 *
 * @param request
 * @return
 */
@SuppressWarnings("unchecked")
public static Map getParameterMap(HttpServletRequest request) {
    // 参数Map
    Map properties = request.getParameterMap();
    // 返回值Map
    Map returnMap = new HashMap();
    Iterator entries = properties.entrySet().iterator();
    Map.Entry entry;
    String name = "";
    String value = "";
    while (entries.hasNext()) {
        entry = (Map.Entry) entries.next();
        name = (String) entry.getKey();
        Object valueObj = entry.getValue();
        if(null == valueObj){
            value = "";
        }else if(valueObj instanceof String[]){
            String[] values = (String[])valueObj;
            for(int i=0;i<values.length;i++){
                value = values[i] + ",";
            }
            value = value.substring(0, value.length()-1);
        }else{
            value = valueObj.toString();
        }
        returnMap.put(name, value);
    }
    return returnMap;
}
posted @ 2016-05-09 18:02  疯子110  阅读(11385)  评论(0编辑  收藏  举报