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  • java, listmap2json, fastjson

    import java.util.ArrayList;
    import java.util.HashMap;
    import java.util.List;
    import java.util.Map;

    import com.alibaba.fastjson.JSON;

     
    public class ListMap2Json {
     
        /**
         * @param Lavender
         */
        public static void main(String[] args) {
          /*  Map<String,String> map1 = new HashMap<String,String>();
            Map<String,String> map2 = new HashMap<String,String>();
            Map<String,String> map3 = new HashMap<String,String>();
            List<Map<String,String>> list = new ArrayList<Map<String,String>>();
            map1.put("name","小明");
            map1.put("age","23");
            map1.put("sex","男");
            list.add(map1);
     
            map2.put("name","小王");
            map2.put("age","24");
            map2.put("sex","女");
            list.add(map2);
     
            map3.put("name","小张");
            map3.put("age","22");
            map3.put("sex","男");
            list.add(map3);
           // String jsonStr = JSONArray.fromObject(list).toString();
            String jsonStr = JSON.toJSONString(list);
            System.out.println(jsonStr);*/
            
           // List<HashMap<String, String>> listMap = new ArrayList<HashMap<String, String>>();
            List listMap = new ArrayList<Map<String, String>>();
            String jsonText = "[{"age":16,"id":"P001","name":"TOM"},{"age":21,"id":"P002","name":"JACKSON"},{"age":20,"id":"P003","name":"MARTIN"}]";
            String jsonStr = "[{"age":"23","name":"小cn","sex":"男"},{"age":"24","name":"小王","sex":"女"},{"age":"22","name":"小张","sex":"男"}]";
            listMap = JSON.parseObject(jsonStr, List.class);
            System.out.println(JSON.toJSONString(listMap));
           
     
        }
     
    }

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  • 原文地址:https://www.cnblogs.com/herosoft/p/6236086.html
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