我将一些参数传递给api,完成添加到购物车功能。但是当我传递参数时,它显示崩溃Invalid top-level type in JSON write'
我知道我的传递参数存在问题。请帮帮我!。怎么做。请帮帮我!!!
这是我传递的参数的json格式!!:
{
"cartType" : "1",
"cartDetails" : {
"customerID" : "u",
"cartAmount" : "6999",
"cartShipping" : "1",
"cartTax1" : "69",
"cartTax2" : "",
"cartTax3" : "",
"cartCouponCode" : "",
"cartCouponAmount" : "",
"cartPaymentMethod" : "",
"cartProductItems" : {
"productID" : "9",
"productPrice" : "6999",
"productQuantity" : "1"
}
}
}
我的更新解决方案:
func addtocartapicalling ()
{
let headers = [
"cache-control": "no-cache",
"postman-token": "4c933910-0da0-b199-257b-28fb0b5a89ec"
]
let jsonObj:Dictionary<String, Any> = [
"cartType" : "1",
"cartDetails" : [
"customerID" : "sathish",
"cartAmount" : "6999",
"cartShipping" : "1",
"cartTax1" : "69",
"cartTax2" : "",
"cartTax3" : "",
"cartCouponCode" : "",
"cartCouponAmount" : "",
"cartPaymentMethod" : "",
"cartProductItems" : [
"productID" : "9",
"productPrice" : "6999",
"productQuantity" : "1"
]
]
]
if (!JSONSerialization.isValidJSONObject(jsonObj)) {
print("is not a valid json object")
return
}
if let postData = try? JSONSerialization.data(withJSONObject: jsonObj, options: JSONSerialization.WritingOptions.prettyPrinted) {
let request = NSMutableURLRequest(url: NSURL(string: "http://expapi.php")! as URL,
cachePolicy: .useProtocolCachePolicy,timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData
let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
if (error != nil) {
///print(error)
} else {
DispatchQueue.main.async(execute: {
if let json = (try? JSONSerialization.jsonObject(with: data!, options: [])) as? Dictionary<String,AnyObject>
{
let status = json["status"] as? Int;
if(status == 1)
{
print("SUCCESS....")
if (json["CartID"] as? Int?) != nil
{
DispatchQueue.main.async(execute: {
print("INSIDE CATEGORIES")
self.addtocartdata.append(Addtocartmodel(json:CartID))
})
}
}
}
})
}
})
dataTask.resume()
}
}
附加值的最后一个问题:
在我的模型中,数据类看起来像这样:
class Addtocartmodel
{
var cartid : Int?
init(json:NSDictionary)
{
self.cartid = json["CartID"] as? Int
}
}
答案 0 :(得分:7)
你的json有一些错误的格式。在swift中使用字典比json清楚得多,并使用JSONSerialization将字典转换为json字符串。
代码如下所示:
func addtocartapicalling ()
{
let headers = [
"cache-control": "no-cache",
"postman-token": "4c933910-0da0-b199-257b-28fb0b5a89ec"
]
let jsonObj:Dictionary<String, Any> = [
"cartType" : "1",
"cartDetails" : [
"customerID" : "sathish",
"cartAmount" : "6999",
"cartShipping" : "1",
"cartTax1" : "69",
"cartTax2" : "",
"cartTax3" : "",
"cartCouponCode" : "",
"cartCouponAmount" : "",
"cartPaymentMethod" : "",
"cartProductItems" : [
"productID" : "9",
"productPrice" : "6999",
"productQuantity" : "1"
]
]
]
if (!JSONSerialization.isValidJSONObject(jsonObj)) {
print("is not a valid json object")
return
}
if let postData = try? JSONSerialization.data(withJSONObject: jsonObj, options: JSONSerialization.WritingOptions.prettyPrinted) {
let request = NSMutableURLRequest(url: NSURL(string: "http://expapi.php")! as URL,
cachePolicy: .useProtocolCachePolicy,timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData
let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
if (error != nil) {
print(error)
} else {
DispatchQueue.main.async(execute: {
if let json = (try? JSONSerialization.jsonObject(with: data!, options: [])) as? Dictionary<String,AnyObject>
{
let status = json["status"] as? Int;
if(status == 1)
{
print("SUCCESS....")
print(json)
if let CartID = json["CartID"] as? Int {
DispatchQueue.main.async(execute: {
print("INSIDE CATEGORIES")
print("CartID:\(CartID)")
self.addtocartdata.append(Addtocartmodel(json:json))
})
}
}
}
})
}
})
dataTask.resume()
}
}
答案 1 :(得分:2)
存在细微差别
尝试使用此
JSONSerialization.jsonObject(with: data, options: []) as? [String:AnyObject]
而不是
JSONSerialization.data(withJSONObject: data, options: []) as? [String:AnyObject]