String str = "5,6,55,66,,,,@";

        String[] chk_deep = str.split("@");

        System.out.println("chk_deep大小:"+ chk_deep.length);

        for (int i = 0; i < chk_deep.length; i++) {

            String[] chk = chk_deep[i].split(",");

            System.out.println("chk大小:"+ chk.length);

            for (int j = 0; j < chk.length; j++) {

                System.out.println(chk[j]);

            }

        }