我正在尝试在Swift中读取此JSON文件,并将数据存储在NSDictionary中,我想将name
作为键并将directory
作为值。
{
"subjects": [
{ "prefix":"", "name":"mada" , "directory":"E1862_Unterrichte_I/E1862_2iCa" },
{ "prefix":"", "name":"oopI2" , "directory":"E1862_Unterrichte_I/E1862_2iCa" },
{ "prefix":"", "name":"req" , "directory":"E1862_Unterrichte_I/E1862_2iCa" },
{ "prefix":"", "name":"ws2C" , "directory":"E1862_Unterrichte_I/E1862_2iCb" },
{ "prefix":"", "name":"sprx" , "directory":"E1868_Unterrichte_Kontext/E1868_8KKa15" },
{ "prefix":"", "name":"etw", "directory":"E1868_Unterrichte_Kontext/E1868_8KEd" },
{ "prefix":"", "name":"infre", "directory":"E1868_Unterrichte_Kontext/E1868_8KGc"}
]
}
为了实现这一点,我使用了NSJSONSerialization:
let data = NSData.dataWithContentsOfFile("subjects.json", options: .DataReadingMappedIfSafe, error: nil)
var error: NSError?
let jsonDict = NSJSONSerialization.JSONObjectWithData(data, options: nil, error: &error) as NSDictionary
到目前为止,我可以读取文件,并且生成的NSDictionary看起来像
["subjects, "7 objects"]
。不幸的是,我不知道如何实现我真正需要的东西(“名称为键,目录为值的NSDictionary”)。 最佳答案
您可以像这样提取所需的数据
if let subjects = jsonResult["subjects"] as? NSDictionary[] {
for subject in subjects {
// subject is an NSDictionary
var prefix = subject["prefix"] as String
var name = subject["name"] as String
// etc
}
} else {
// There was no 'subjects' key in the dictionary
}
关于json - JSON/NSJSONSerialization的快速问题,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/24468546/