如何在swift2中从json读取数据

debugcn 发表于 Dev

巴蒂

我正在尝试从swift（2.2）中的json文件读取电子邮件：

 { "employees" : [
  {
    "name": "sudhanshu",
    "email": "[email protected]",
    "password": "password"
    "profilePic": ""
 },
 {
    "name": "prokriti",
    "email": "[email protected]",
    "password": "password@123",
    "profilePic": ""
  }
]}

但是我收到错误消息“ Error Domain = NSCocoaErrorDomain Code = 3840”字符128附近的转义控制字符。“ UserInfo = {NSDebugDescription =字符128附近的转义控制字符。}”我见过较早的帖子，但找不到确切的问题出在哪里？？

if let path = NSBundle.mainBundle().pathForResource("Employees", ofType: "json") {
        if let data = NSData(contentsOfFile: path) {
            do {
                let jsonResult: NSDictionary = try NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers) as! NSDictionary

                if let error = jsonResult["error"] {
                    print("Error is: \(error)")
                } else {
                    if let person = jsonResult["email"] {
                        print(person) // dictionary[@"quotables"]
                    }
                }

            } catch let error as NSError {
             print("Error is: \(error)")
            }

        }
    }

提前致谢！

希玛里·卢哈（Hemali Luhar）

您正在尝试直接从词典中访问电子邮件密钥。而您首先需要从“员工”键访问数组，然后需要从“电子邮件”键获取价值。

if let path = NSBundle.mainBundle().pathForResource("Employees", ofType: "json") {
if let data = NSData(contentsOfFile: path) {
    do {
        let jsonResult: NSDictionary = try NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers) as! NSDictionary

        if let error = jsonResult["error"] {
            print("Error is: \(error)")
        } else {
            let person = jsonResult["employees"] as! NSArray
            for i in 0..<person.count
            {
                let dict = person.objectAtIndex(i) as! NSDictionary
                let strEmail = dict["email"] as! String
                print(strEmail)
            }
        }

    } catch let error as NSError {
        print("Error is: \(error)")
    }

}

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