swift3.0 存取json数据到沙盒

do {

//将json保存到本地

let jsonData = try JSONSerialization.data(withJSONObject: dict, options: .prettyPrinted)

// here "jsonData" is the dictionary encoded in JSON data

let data = jsonData as NSData

data.write(toFile: filePath, atomically: true)

//构建文件路径

let filePath:String = NSHomeDirectory() + "/Documents/imagetovideo.json"

//读取json

var loaddata=NSData(contentsOfFile: filePath)

if loaddata != nil

{

let jData=loaddata as! Data

let decoded = try JSONSerialization.jsonObject(with: jData, options: [])

print("译码：",decoded)

}

} catch {

print(error.localizedDescription)

}