如何在java中迭代这个json数组
我在记录JSONArray时得到了这个数组。我如何迭代它并获得这些值 编辑如何在java中迭代这个json数组,java,json,Java,Json,我在记录JSONArray时得到了这个数组。我如何迭代它并获得这些值 编辑 ["[{\"timeFrom\":\"06:00:00\",\"timeTo\":\"09:00:00\",\"title\":\"First\"},{\"timeFrom\":\"09:00:00\",\"timeTo\":\"12:00:00\",\"title\":\"Second\"},{\"timeFrom\":\"12:00:00\",\"timeTo\":\"16:00:00\",\"title\":\"T
["[{\"timeFrom\":\"06:00:00\",\"timeTo\":\"09:00:00\",\"title\":\"First\"},{\"timeFrom\":\"09:00:00\",\"timeTo\":\"12:00:00\",\"title\":\"Second\"},{\"timeFrom\":\"12:00:00\",\"timeTo\":\"16:00:00\",\"title\":\"Third\"},{\"timeFrom\":\"16:00:00\",\"timeTo\":\"20:00:00\",\"title\":\"Fourth\"},{\"timeFrom\":\"20:00:00\",\"timeTo\":\"21:30:00\",\"title\":\"5th\"},{\"timeFrom\":\"21:30:00\",\"timeTo\":\"00:00:00\",\"title\":\"Dessert (within two hours of bedtime)th\"}]"]
for(inti=0;i
不返回任何内容,因为MyService.fines.length()=1
MyService.fines是JSONArray实例您必须将json对象解析为Java对象,然后才能读取数据
有关可在Java中使用的函数列表,出现此问题是因为数组的格式如下所示:
for (int i = 0; i < MyService.Meals.length(); ++i) {
JSONObject rec = MyService.Meals.getJSONObject(i); String text = rec.getString("timeFrom");
}
它是一个大小为1的数组,其中一个字符串作为其内容
您希望字符串中包含已进行字符串编码的数组,该数组应如下所示:
[
"[{\"timeFrom\":\"06:00:00\",\"timeTo\":\"09:00:00\",\"title\":\"First\"},{\"timeFrom\":\"09:00:00\",\"timeTo\":\"12:00:00\",\"title\":\"Second\"},{\"timeFrom\":\"12:00:00\",\"timeTo\":\"16:00:00\",\"title\":\"Third\"},{\"timeFrom\":\"16:00:00\",\"timeTo\":\"20:00:00\",\"title\":\"Fourth\"},{\"timeFrom\":\"20:00:00\",\"timeTo\":\"21:30:00\",\"title\":\"5th\"},{\"timeFrom\":\"21:30:00\",\"timeTo\":\"00:00:00\",\"title\":\"Dessert (within two hours of bedtime)th\"}]"
]
检查Javascript代码,似乎有一个部分将您想要的数组包装在一个字符串中,并将其放入另一个数组中。检查对
JSON.stringify()
的不必要调用,我已经尝试过这样的方法:for(int I=0;I
但不起作用,我不确定@DusanMalic的结果是什么?我试图记录它,但它不记录,然后我看到MyService.fines.length()(即json对象)是1,但我不知道为什么…可能重复此页面上的示例?这些示例都不起作用,我已经尝试过了……您的JSON字符串看起来格式不正确,外部方括号包围着一个字符串,因此数组的长度当然是一。从字符串外部删除[“
和”]
,然后删除引号前面的所有“`”,然后看看会发生什么
[
{
"timeFrom": "06: 00: 00",
"timeTo": "09: 00: 00",
"title": "First"
},
{
"timeFrom": "09: 00: 00",
"timeTo": "12: 00: 00",
"title": "Second"
},
{
"timeFrom": "12: 00: 00",
"timeTo": "16: 00: 00",
"title": "Third"
},
{
"timeFrom": "16: 00: 00",
"timeTo": "20: 00: 00",
"title": "Fourth"
},
{
"timeFrom": "20: 00: 00",
"timeTo": "21: 30: 00",
"title": "5th"
},
{
"timeFrom": "21: 30: 00",
"timeTo": "00: 00: 00",
"title": "Dessert(withintwohoursofbedtime)th"
}
]