paraArray = "[" + paraArray + "]";
                _finalMap.put("sourcename", name);
                _finalMap.put("tablename", tablename);
                _finalMap.put("datasource_id", datasource_id);
                _finalMap.put("id", id);
            }
            list = JSON.parseArray(paraArray, Map.class);
            if(list==null){
                return "{"code":"444","msg":"查询的信息不存在"}";
            }
            // 后续自己处理即可
            Map map1 = list.get(0);
            List list1 = (List) map1.get("tableInfos");
            Object ob = null;
            for (int i = 0; i < list1.size(); i++) {
                ob = (Object) list1.get(i);
            
            String sob = ob.toString();
            sob = "[" + sob + "]";
            List list3 = JSON.parseArray(sob, Map.class);
            System.out.println(list3.toString());
            Map map3 = (Map) list3.get(0);
            List list4 = (List) map3.get("fieldSelectArray");
            List fieldSelectArrayList = new ArrayList();
            for (int k = 0; k < list4.size(); k++) {
                Map temp = new HashMap();
                Object o = list4.get(k);
                String so = o.toString();
                so = "[" + so + "]";
                List list5 = JSON.parseArray(so, Map.class);
                System.out.println(list5);
                Map map4 = (Map) list5.get(0);
                String _name = (String) map4.get("name");
                String _type = (String) map4.get("type");
                String _dict = (String) map4.get("dict");
                temp.put("name", _name);
                temp.put("type", _type);
                temp.put("dict", _dict);
                fieldSelectArrayList.add(temp);

              jsons.put("paramname",paramname);
            jsons.put("type", type);
            jsons.put("dict",dict);
              
            JSONObject jsons1 = new JSONObject();
            jsons1.put("paramname", "A");
            jsons1.put("type","B");
            jsons1.put("dict","C");
            
            List<JSONObject> st = new ArrayList<JSONObject>();
            st.add(jsons);
            st.add(jsons1);
            
              JSONObject json = new JSONObject();
              json.put("sourcename", name);
              json.put("tableName", tablename);
              json.put("datasource_id", datasource_id);
              json.put("id", id);
              json.put("fieldSelectArray", st);
              
              
              JSONObject jsonB = new JSONObject();
              jsonB.put("tableInfos", json);
              
     
         System.out.println(jsonB.toString());


先添加小的，最内部的JSOn，然后依次向外添加，----------得到想要的为止。


------------GOOD LUCKLY ！！！-----------