ios - 从 iOS Swift 中的 xml 文本文件中提取 Json

Question

我必须从文本文件中提取和解析 json，我知道如何解析 json，但我无法从 xml 格式中正确提取它。这是我的 xml，其中包含 json。

<Data>
<Persons>[{"ID":"2","Name":"Catagory 1"},{"ID":"3","Name":"Catagory 2”</Persons>
<class>[{"ID":"3","Name":"WEAVING”}]</class>
</Data>

我想要的是单独获取 json 及其标签，例如。

"Persons":"[{"ID":"2","Name":"Catagory 1"},{"ID":"3","Name":"Catagory 2”}]"

Answer 1

解析xml的示例代码如下:

import UIKit
import Foundation
class ViewController: UIViewController {

    var parser:XMLParser?
    var foundChars: String = ""
    var personsStr: String = ""

    override func viewDidLoad() {
        super.viewDidLoad()
        parseXML()
        // Do any additional setup after loading the view, typically from a nib.
    }

    func parseXML() {
        let str: NSString = "<Data><Persons>[{\"ID\":\"2\",\"Name\":\"Catagory 1\"},{\"ID\":\"3\",\"Name\":\"Catagory 2\"}]</Persons><class>[{\"ID\":\"3\",\"Name\":\"WEAVING\"}]</class></Data>"
        if let data = str.data(using: String.Encoding.utf8.rawValue) {
            parser = XMLParser.init(data: data)
            parser!.delegate = self
            parser!.parse()
        }

    }
}
extension ViewController: XMLParserDelegate {
    public func parserDidEndDocument(_ parser: XMLParser) {
        debugPrint("Person str is:: " + self.personsStr)
        //TODO: You have to build your json object from the PersonStr now
    }
    func parser(_ parser: XMLParser, foundCharacters string: String) {
        self.foundChars = self.foundChars + string
    }
    func parser(_ parser: XMLParser, didEndElement elementName: String, namespaceURI: String?, qualifiedName qName: String?) {
        debugPrint("end element::" + elementName)
        if (elementName == "Persons") {
            self.personsStr = self.foundChars
        }
        self.foundChars = ""
    }
}