Array
(
    [2010001] => Array
        (
            [studentNo] => 2010001
            [studentName] => 张三
            [studentSex] => 男
        )

    [2010002] => Array
        (
            [studentNo] => 2010002
            [studentName] => 李四
            [studentSex] => 女
        )

    [2010003] => Array
        (
            [studentNo] => 2010003
            [studentName] => 王五
            [studentSex] => 男
        )

    [2010004] => Array
        (
            [studentNo] => 2010004
            [studentName] => 马六
            [studentSex] => 女
        )

)