Question

有一串json字符串，我需要将其中的时间格式从yyyy-M-d转换为yyyy/M/d，用c#的正则表达式替换的方法怎么写

如下2015-9-24转换为2015/9/24
[{"Data":null,"Time":"2015-9-24 0:00:00"},{"Data":null,"Time":"2015-9-24 1:00:00"},{"Data":null,"Time":"2015-9-24 2:00:00"},{"Data":null,"Time":"2015-9-24 3:00:00"},{"Data":null,"Time":"2015-9-24 4:00:00"},{"Data":null,"Time":"2015-9-24 5:00:00"},{"Data":null,"Time":"2015-9-24 6:00:00"},{"Data":null,"Time":"2015-9-24 7:00:00"},{"Data":null,"Time":"2015-9-24 8:00:00"},{"Data":null,"Time":"2015-9-24 9:00:00"},{"Data":null,"Time":"2015-9-24 10:00:00"},{"Data":null,"Time":"2015-9-24 11:00:00"},{"Data":null,"Time":"2015-9-24 12:00:00"},{"Data":null,"Time":"2015-9-24 13:00:00"},{"Data":null,"Time":"2015-9-24 14:00:00"},{"Data":null,"Time":"2015-9-24 15:00:00"},{"Data":null,"Time":"2015-9-24 16:00:00"},{"Data":null,"Time":"2015-9-24 17:00:00"},{"Data":null,"Time":"2015-9-24 18:00:00"},{"Data":null,"Time":"2015-9-24 19:00:00"},{"Data":null,"Time":"2015-9-24 20:00:00"},{"Data":null,"Time":"2015-9-24 21:00:00"},{"Data":null,"Time":"2015-9-24 22:00:00"},{"Data":null,"Time":"2015-9-24 23:00:00"},{"Data":null,"Time":"2015-9-25 0:00:00"}]

Answer 1

 String s = "[{\"Data\":null,\"Time\":\"2015-9-24 0:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 1:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 2:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 3:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 4:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 5:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 6:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 7:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 8:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 9:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 10:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 11:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 12:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 13:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 14:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 15:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 16:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 17:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 18:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 19:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 20:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 21:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 22:00:00\"},{\"Data\":null,\"Time\":\"2015-9-24 23:00:00\"},{\"Data\":null,\"Time\":\"2015-9-25 0:00:00\"}]";
            Console.WriteLine(s);
            String s0 = Regex.Replace(s, "([0-9]{4})-([0-9]{1,2})-([0-9]{1,2})", "$1/$2/$3");
            Console.WriteLine(s0);

Answer 2

你先试试查找是否成功再说：

201\d-\d-[123]\d [\d:]{7}