Ios 使用SwiftyJSON在JSON中循环

我试图用SwiftyJSON循环JSON值，以便在UIAlertController中显示它们

在使用Alamofire的API调用中，我使用

if((responseData.result.value) != nil) {

 let json = JSON(responseData.result.value!)
 let token = json["api_token"].string

 response(token: token, errorVal: json)

} else {
  return
}

然后在我的VC中，我将该数据用于：

if let errorVal = errorVal {

var errorMessages = ""

for (_,subJson):(String, JSON) in errorVal {

   errorMessages = errorMessages + String(subJson) + "\n"
 }

}

errorVal正在返回：

{
  "email" : [
    "The email field is required."
  ],
  "password" : [
    "The password field is required."
  ]
}

和错误信息

但我希望errorMessages显示以下内容：

The email field is required
The password field is required

---

如何循环使用JSON并仅获取值？

您可以使用以下方法：

var newMessage = String(subJson).stringByReplacingOccurrencesOfString("[", withString: "", options: NSStringCompareOptions.LiteralSearch, range: nil)
    newMessage = newMessage.stringByReplacingOccurrencesOfString("]", withString: "", options: NSStringCompareOptions.LiteralSearch, range: nil)
    errorMessages = errorMessages + newMessage + "\n"

---

因为subbson是一个字符串数组，所以获取第一个字符串

if let errorVal = errorVal {
    var errorMessages = ""

    for (_,subJson):(String, JSON) in errorVal {
        // Looks like subJson is an array, so grab the 1st element
        let s = subJson[0].string
        errorMessages = errorMessages + s + "\n"
    }

}

if let errorVal = errorVal {
    var errorMessages = ""

    for (_,subJson):(String, JSON) in errorVal {
        // Looks like subJson is an array, so grab the 1st element
        let s = subJson[0].string
        errorMessages = errorMessages + s + "\n"
    }

}