借助以下代码块,您可以将任何复杂的 XML 转换为 JSON。我正在转换 50 页的 XML,效果非常好。获得 json 后,您可以直接将其映射到您的模型类。
import Foundation
class ParseXMLData: NSObject, XMLParserDelegate {
var parser: XMLParser
var elementArr = [String]()
var arrayElementArr = [String]()
var str = "{"
init(xml: String) {
parser = XMLParser(data: xml.replaceAnd().replaceAposWithApos().data(using: String.Encoding.utf8)!)
super.init()
parser.delegate = self
}
func parseXML() -> String {
parser.parse()
// Do all below steps serially otherwise it may lead to wrong result
for i in self.elementArr{
if str.contains("\(i)@},\"\(i)\":"){
if !self.arrayElementArr.contains(i){
self.arrayElementArr.append(i)
}
}
str = str.replacingOccurrences(of: "\(i)@},\"\(i)\":", with: "},") //"\(element)@},\"\(element)\":"
}
for i in self.arrayElementArr{
str = str.replacingOccurrences(of: "\"\(i)\":", with: "\"\(i)\":[") //"\"\(arrayElement)\":}"
}
for i in self.arrayElementArr{
str = str.replacingOccurrences(of: "\(i)@}", with: "\(i)@}]") //"\(arrayElement)@}"
}
for i in self.elementArr{
str = str.replacingOccurrences(of: "\(i)@", with: "") //"\(element)@"
}
// For most complex xml (You can ommit this step for simple xml data)
self.str = self.str.removeNewLine()
self.str = self.str.replacingOccurrences(of: ":[\\s]?\"[\\s]+?\"#", with: ":{", options: .regularExpression, range: nil)
return self.str.replacingOccurrences(of: "\\", with: "").appending("}")
}
// MARK: XML Parser Delegate
func parser(_ parser: XMLParser, didStartElement elementName: String, namespaceURI: String?, qualifiedName qName: String?, attributes attributeDict: [String : String]) {
//print("\n Start elementName: ",elementName)
if !self.elementArr.contains(elementName){
self.elementArr.append(elementName)
}
if self.str.last == "\""{
self.str = "\(self.str),"
}
if self.str.last == "}"{
self.str = "\(self.str),"
}
self.str = "\(self.str)\"\(elementName)\":{"
var attributeCount = attributeDict.count
for (k,v) in attributeDict{
//print("key: ",k,"value: ",v)
attributeCount = attributeCount - 1
let comma = attributeCount > 0 ? "," : ""
self.str = "\(self.str)\"_\(k)\":\"\(v)\"\(comma)" // add _ for key to differentiate with attribute key type
}
}
func parser(_ parser: XMLParser, foundCharacters string: String) {
if self.str.last == "{"{
self.str.removeLast()
self.str = "\(self.str)\"\(string)\"#" // insert pattern # to detect found characters added
}
}
func parser(_ parser: XMLParser, didEndElement elementName: String, namespaceURI: String?, qualifiedName qName: String?) {
//print("\n End elementName \n",elementName)
if self.str.last == "#"{ // Detect pattern #
self.str.removeLast()
}else{
self.str = "\(self.str)\(elementName)@}"
}
}
}
添加字符串扩展
extension String{
// remove amp; from string
func removeAMPSemicolon() -> String{
return replacingOccurrences(of: "amp;", with: "")
}
// replace "&" with "And" from string
func replaceAnd() -> String{
return replacingOccurrences(of: "&", with: "And")
}
// replace "\n" with "" from string
func removeNewLine() -> String{
return replacingOccurrences(of: "\n", with: "")
}
func replaceAposWithApos() -> String{
return replacingOccurrences(of: "Andapos;", with: "'")
}
}
从班级拨打电话
let xmlStr = "<Your XML string>"
let parser = ParseXMLData(xml: xmlStr)
let jsonStr = parser.parseXML()
print(jsonStr)
我希望这可以帮助你。