使用fastjson对json串和对象的转换

String转对象，数组

String json = "{"code":"200","data":{"total":4,"list":[{"createBy":"admin","createTime":"2019-09-16 10:18:47","id":2,"params":{},"ruleName":"规则1","workBegintime":"08:00:00","workEndtime":"09:00:00","workoffBegintime":"18:00:00","workoffEndtime":"19:00:00"},{"createBy":"admin","createTime":"2019-09-16 17:27:15","id":5,"params":{},"ruleName":"考勤test2","workBegintime":"07:00:00","workEndtime":"08:20:35","workoffBegintime":"17:20:35","workoffEndtime":"18:20:35"}]}}";
        String json2 = "[{"第0名":0},{"第1名":1},{"第2名":2},{"第3名":3},{"第4名":4},{"第5名":5},{"第6名":6},{"第7名":7},{"第8名":8},{"第9名":9}]";
        Map map = JSON.parseObject(json, Map.class);
        List<Map> maps = JSON.parseArray(json2, Map.class);
        System.out.println(map);
        System.out.println(maps);
        String[] arr = new String[5];
        arr[0] = "1";
        arr[1] = "2";
        arr[2] = "3";
        System.out.println(ArrayUtil.arrayToString(arr));

//代码执行结果
{code=200, data={"total":4,"list":[{"createBy":"admin","workBegintime":"08:00:00","workoffEndtime":"19:00:00","createTime":"2019-09-16 10:18:47","workoffBegintime":"18:00:00","ruleName":"规则1","id":2,"params":{},"workEndtime":"09:00:00"},{"createBy":"admin","workBegintime":"07:00:00","workoffEndtime":"18:20:35","createTime":"2019-09-16 17:27:15","workoffBegintime":"17:20:35","ruleName":"考勤test2","id":5,"params":{},"workEndtime":"08:20:35"}]}}
[{第0名=0}, {第1名=1}, {第2名=2}, {第3名=3}, {第4名=4}, {第5名=5}, {第6名=6}, {第7名=7}, {第8名=8}, {第9名=9}]
1 2 3  

对象转String字符串