如何将NSDictionary转换为包含NSDictionary的
JSON的NSString？我试过但没有成功
//parameters is NSDictionary let jsonData:NSDictionary = NSJSONSerialization.JSONObjectWithData(data!,options:NSJSONReadingOptions.MutableContainers,error: &error) as NSDictionary
我想在swift中将这个NSDictionary Json转换为NSString
您可以使用以下代码：
var error: NSError?
var dict: NSDictionary = [
"1": 1,"2": "Two","3": false
]
let data = NSJSONSerialization.dataWithJSONObject(dict,options: NSJSONWritingOptions.PrettyPrinted,error: &error)
if let data = data {
let json = NSString(data: data,encoding: NSUTF8StringEncoding)
if let json = json {
println(json)
}
}
给定一个NSDictionary,它被序列化为NSData,然后转换为NSString.
执行转换的代码也可以更简洁地重写为：
斯威夫特3：
do {
let jsonData = try JSONSerialization.data(withJSONObject: data)
if let json = String(data: data,encoding: .utf8) {
print(json)
}
} catch {
print("something went wrong with parsing json")
}
原始答案：
if let data = NSJSONSerialization.dataWithJSONObject(dict,error: &error) {
if let json = NSString(data: data,encoding: NSUTF8StringEncoding) {
println(json)
}
}
请注意,为了使序列化起作用,字典必须包含有效的JSON键和值.
