; ;

java中string类型转换成map

背景:有时候string类型的数据取出来是个很标准的key、value形式,通过Gson的可以直接转成map

使用方式:

     Gson gson = new Gson();
        Map<String, Object> map = new HashMap<String, Object>();
        map = gson.fromJson(jsonString, map.getClass());#关键
        String goodsid=(String) map.get("goods_id");
        System.out.println("map的值为:"+goodsid);

jsong数据为:

{"goods_id":"140861765","cat_id":"210","goods_sn":"171073501","goods_sn_back":"171073501","goods_upc":null,"goods_name":"Lace-Up Boxer Swimming Trunks"}

是个很标准的key,value形式,转换后,在使用map分得到key,打印的map为

Gson的另外一种写法

    public static Map<String, Object> json2map(String str_json) {
        Map<String, Object> res = null;
        try {
            Gson gson = new Gson();
            res = gson.fromJson(str_json, new TypeToken<Map<String, Object>>() {
            }.getType());
        } catch (JsonSyntaxException e) {
        }
        return res;
    }

gson在mavent的配置

    <!-- 配置gson -->
    <dependency>
        <groupId>com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
        <version>2.2.4</version>
    </dependency>

 

posted @ 2017-09-02 10:59  做梦的人-  阅读(157018)  评论(1编辑  收藏  举报