从JSON数组中获取子键和值:Java

Question

我有以下JSON数组存储在一个名为fieldsArray的变量:

[
{
"Header - Goods Receipt":[
{"warehouse":{"editableField":"false"}},
{"documentNo":{"editableField":"true"}}
]
},
{
"Lines - Goods Receipt":[
{"description":{"editableField":"false"}}
]
}
]

我需要循环遍历这个数组，抓取"Header - Goods Receipt"首先，然后向下钻取它的子元素("warehouse")和"documentNo")以及它们嵌套的"editableField"的值孩子的钥匙。到目前为止，我已经设法抓住"标题-货物收据"，但不能得到它的孩子。到目前为止，我已经完成了以下操作:

for (int i = 0; i < fieldsArray.length(); i++) {  
JSONObject fieldsObject = fieldsArray.optJSONObject(i); 

Iterator<String> iterator = fieldsObject.keys(); 
while(iterator.hasNext()) { 
String currentParentKey = iterator.next(); 
String currentParentKeyProperties = fieldsObject.optString(currentParentKey);
//I have tried the below code to get to "warehouse" and "documentNo", but it's not working:
Iterator<String> iteratorTwo = currentParentKeyProperties.keys();
while(iteratorTwo.hasNext()) {
String currentChildKey = iteratorTwo.next();
String isEditable = currentParentKeyProperties.getJSONObject(currentChildKey).getString("editableField");
}
}
}  

得到以下错误:

error: cannot find symbol
Iterator<String> iteratorTwo = currentParentKeyProperties.keys();                                                          
symbol:   method keys()

和

error: cannot find symbol
String isEditable = currentParentKeyProperties.getJSONObject(currentChildKey).getString("editableField");
method: getJSONObject(String)

注意:currentParentKeyProperties给出以下JSON数组:

[
{
"warehouse":{"editableField":"false"}
},
{
"documentNo":{"editableField":"true"}
}
]

全新的Java -不知道为什么getJSONObject不工作?我在代码的其他地方使用过它。提前谢谢。

Answer 1

您的问题与Java无关，您只是忘记了一个步骤。

String currentParentKeyProperties =fieldsObject.optString (currentParentKey);

是不正确的，你想要的是得到一个JSONObject。