Question

我已将JSON保存在数据库中，并希望从每个条目中获取特定对象。我会告诉你：

[
   {
      "Messungen":[
         {
            "car":"no Car choosed",
            "g":0.2,
            "time":"[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]",
            "max":66,
            "secondText":"0 - 200 km\/h",
            "speed":"[63, 61, 63, 62, 63, 64, 65, 65, 66, 66, 66, 64, 63, 63]",
            "tosecond":"\/",
            "to100":"\/",
            "way":209,
            "avg":63
         }
      ]
   },
   {
      "Messungen":[
         {
            "car":"no Car choosed",
            "g":0.2,
            "time":"[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44]",
            "max":70,
            "secondText":"0 - 200 km\/h",
            "speed":"[59, 61, 61, 61, 62, 60, 61, 62, 61, 62, 63, 63, 64, 64, 63, 63, 64, 65, 65, 65, 65, 65, 66, 66, 67, 69, 69, 67, 67, 67, 67, 67, 68, 68, 69, 70, 70, 69, 69, 69, 69, 69, 68, 66, 66]",
            "tosecond":"\/",
            "to100":"\/",
            "way":808,
            "avg":65
         }
      ]
   }
]

我想从阵列Messungen获取方式和汽车作为列表或数组。这是可能的，还是应该用这两种类型在数据库中创建两个新条目？

谢谢:)

Answer 1

数据库旨在善于管理许多行。使用数据库的力量。创建一个名为＆＃34; Messung＆＃34;并使每个观察（car，g，way，u.s.w）成为表格中的一列。

多个JSONArray到数组或列表

1 个答案: